Emerson Type Ace97 Pad Depad Valve Instruction Manual
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Type ACE97
D102773X012
Instruction Manual
Form 5665
November 2011
www.sherregulators.com
Type ACE97 Pad-Depad Valve
!
WARNING
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion,
re and/or chemical contamination
causing property damage and personal
injury or death.
Fisher® pad-depad valves must be
installed, operated, and maintained
in accordance with federal, state, and
local codes, rules and regulations,
and Emerson Process Management
Regulator Technologies, Inc. (Regulator
Technologies) instructions.
Figure 1. Type ACE97 Pad-Depad Valve (NPS 1/2 / DN 15 Pad Valve / 1 NPT Depad Valve Shown)
W8161
GAS INLET
ACTUATOR
PAD VALVE
TO TANK
DEPAD PILOT VALVE
DEPAD
MAIN
VALVE
VENT
Type ACE97
2
Pad (Tank Blanketing) Specications
Pad Body Sizes and End Connection Styles
1/2, 1, and 2 NPT
NPS 1/2, 1, and 2 / DN 15, 25, and 50
CL150 RF
Maximum Operating Inlet Pressure(1)
200 psig / 13,8 bar
Maximum Main Valve Inlet Pressure(1)
200 psig / 13,8 bar
Inlet Operating Ranges(1)
NPS 1/2 / DN 15 pad valve:
25 to 200 psig / 1,7 to 13,8 bar
NPS 1 and 2 / DN 25 and 50 pad valves:
25 to 50 psig / 1,7 to 3,4 bar
51 to 120 psig / 3,5 to 8,2 bar
121 to 200 psig / 8,3 to 13,8 bar
Control Pressure Ranges(1)
See Table 1
Maximum and Minimum Differential Pressures(1)
25 psig / 1,7 bar minimum
200 psig / 13,8 bar maximum
Maximum Backpressure(1)
20 psig (1,4 bar)
Flow Coefcients for Relief Valve Sizing
(110% of rated Cv)
NPS 1/2 / DN 15:
Cv 0.2 use Cv 0.22
Cv 0.4 use Cv 0.44
NPS 1 / DN 25:
Cv 1 use Cv 1.1
Cv 2 use Cv 2.2
Cv 4 use Cv 4.4
Cv 7.5 use Cv 8.25
Cv 10 use Cv 11
NPS 2 / DN 50:
Cv 20 use Cv 22
Cv 45 use Cv 50
Cv 60 use Cv 66
Depad (Vapor Recovery) Specications
Depad Body Sizes
1 and 2 NPT
NPS 3 and 4 / DN 80 and 100
Specications
Ratings and specications for the Type ACE97 Pad-Depad valve are listed in the Specications section below.
Factory specications are stamped on the nameplate fastened to the actuator of the valve.
Depad Pressure Ranges(1)
See Table 1
Valve Coefcients (110% of rated Cv)
1 NPT:
Cv 3 use Cv 3.3
Cv 6 use Cv 7
Cv 12 use Cv 13
Cv 17 use Cv 19
2 NPT:
Cv 20 use Cv 22
Cv 35 use Cv 39
Cv 70 use Cv 77
NPS 3 / DN 80:
Cv 90 use Cv 99
Cv 115 use Cv 127
Cv 140 use Cv 154
NPS 4 / DN 100:
Cv 150 use Cv 165
Cv 200 use Cv 220
Cv 280 use Cv 308
General Type ACE97 Specications
Pressure Registration
External
Temperature Capabilities
Nitrile (NBR):
-20° to 180°F / -29° to 82°C
Fluorocarbon (FKM):
0° to 212°F / -18° to 100°C
Ethylenepropylene (EPDM - FDA):
-20° to 212°F / -29° to 100°C
Peruoroelastomer (FFKM):
-20° to 212°F / -29° to 100°C
Approximate Weights
NPS 1/2 x 1 x 1 / DN 15 x 25 x 25:
70 pounds / 32 kg
NPS 1 x 2 x 2 / DN 25 x 50 x 50:
105 pounds / 48 kg
NPS 2 x 3 x 3 / DN 50 x 80 x 80:
175 pounds / 79 kg
1. The pressure/temperature limits in this Instruction Manual or any applicable standard limitation should not be exceeded.
Type ACE97
3
If a leak develops or if the unit or outlet
continually vents gas, service to the
unit may be required. Failure to correct
trouble could result in a hazardous
condition. Only a qualied person must
install or service the unit.
Installation, operation, and maintenance
procedures performed by unqualied
personnel may result in improper
adjustment and unsafe operation.
Either condition may result in equipment
damage or personal injury. Use qualied
personnel when installing, operating,
and maintaining the Type ACE97
pad-depad valve.
Introduction
Scope of the Manual
This instruction manual provides installation, startup,
maintenance, and parts ordering information for the
Type ACE97 Pad-Depad valve (Figure 1). The
product photo may vary depending on the size of
the valve ordered.
Table 1. Actuator Spring Pressure Ranges
CONTROL PRESSURE RANGES SPRING FREE LENGTH SPRING WIRE DIAMETER
Pad Setpoint Depad Setpoint (Above Pad) INCHES mm INCHES mm
inches w.c. mbar inches w.c. mbar
0.5 to 3- 1 to 7 4 to 10 10 to 25 3.08 78,2 0.105 2,67
0.5 to 7 1 to 17 4 to 6 10 to 15 4.0 102 0.092 2,34
3 to 13 7 to 32 4 to 16 10 to 40 3.73 94,7 0.156 3,96
4 to 10 10 to 25(1) 16 to 78 40 to 194(1) 3.73
2.90
94,7
73,7
0.156
0.250
3,96
6,35
0.5 to 1.4 psig 34 to 97 mbar 0.25 to 1 psig 17 to 69 3.8 96,5 0.250 6,35
1.0 to 2.2 psig 69 to 152 mbar 0.25 to 2 psig 17 to 138 3.8 96,5 0.313 7,95
1. Two nested springs are used (See Figure 12).
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
TANK PRESSURE
VACUUM PRESSURE
PRE-EXPANSION PRESSURE
INTERMEDIATE BLEED PRESSURE
PILOT SUPPLY PRESSURE
INTERMEDIATE PRESSURE
LOADING PRESSURE
PUMP PRESSURE
BYPASS PRESSURE
BACK PRESSURE
BOOST PRESSURE
EXHAUST
PILOT LOADING PRESSURE
VENT HEADER PRESSURE
INLET BLEED PRESSURE
POPPET
O-RING
SEAT
ROLLING
DIAPHRAGM
CAGE
INLET
OPEN PILOT
REGULATOR
ACTUATOR
SENSING
CONNECTION
DIAGNOSTIC
PORT
INERT GAS IN
PAD VALVE
TANK
CONNECTION
DEPAD
MAIN
VALVE
ON/OFF
DIAGNOSTIC
GAUGE
DEPAD PILOT
LOADING PRESSURE
EXHAUSTED BACK TO TANK
INLET PRESSURE
ATMOSPHERIC PRESSURE
TANK PRESSURE
VENT HEADER PRESSURE
PILOT LOADING PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
TANK PRESSURE
VACUUM PRESSURE
PRE-EXPANSION PRESSURE
INTERMEDIATE BLEED PRESSURE
PILOT SUPPLY PRESSURE
INTERMEDIATE PRESSURE
LOADING PRESSURE
PUMP PRESSURE
BYPASS PRESSURE
BACK PRESSURE
BOOST PRESSURE
EXHAUST
PILOT LOADING PRESSURE
VENT HEADER PRESSURE
INLET BLEED PRESSURE
VENT
INLET
BLEED
ADJUSTABLE
DEADBAND
INLET BLEED PRESSURE
Figure 2. Type ACE97 Pad On / Depad Off
CONTROLLED
PRESSURE
RANGE SPRING
MAIN
VALVE
SPRING
E0005
Type ACE97
4
Product Description
The Type ACE97 Pad-Depad valve is a self-contained,
pilot-operated valve that maintains a blanket of inert gas
on top of a stored product to protect it from atmospheric
contamination. It reduces combustibility, decreases
vaporization, controls vapor space pressure during
pump-in and pump-out operations, and prevents the
tank from entering a vacuum condition and collapsing
upon itself. The Type ACE97 valve provides excellent
and accurate pressure control of the vapor space in the
tank. Blanketing pressure is kept to a minimum in order
to conserve the use of blanketing gas.
Pad (tank blanketing) is used to describe the process
of replacing the vapor space of a storage tank with
an inert gas.
Depad (vapor recovery) is used to describe the
process of relieving or venting the vapor space as
a result of pressure rise.
Tank and vapor recovery connections are available
to meet most customer requirements. A Single Array
Manifold (S.A.M) provides a single tank and sensing
connection and is required for tanks having a single
nozzle. Accessories include gauges, purge meters,
pressure switches, and check valves.
Principle of Operation
Type ACE97 pilot-operated valves (except for the
NPS 1/2 / DN 15 pad valve) control the vapor space
pressure over a stored liquid. The unit is stainless
steel and is controlled by a very large actuator
diaphragm. The oversized actuator diaphragm
offers high sensitivity to changes in tank pressure.
When a storage tank cools and tank vapors condense,
Type ACE97 pad (tank blanketing) valves replace the
condensing vapors with an inert gas to prevent internal
tank pressure from decreasing. Positive tank pressure
prevents outside air from contaminating the product
and reduces the possibility of atmospheric pressure
collapsing the tank.
Additionally, Type ACE97 valves provide depad (vapor
recovery) capabilities through the depad main valve
and depad pilot valve. When the temperature outside
the tank rises causing the vapor inside the tank to
expand, Type ACE97 depad valve vents the excess
tank pressure to a safe place.
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
TANK PRESSURE
VACUUM PRESSURE
PRE-EXPANSION PRESSURE
INTERMEDIATE BLEED PRESSURE
PILOT SUPPLY PRESSURE
INTERMEDIATE PRESSURE
LOADING PRESSURE
PUMP PRESSURE
BYPASS PRESSURE
BACK PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
TANK PRESSURE
VACUUM PRESSURE
PRE-EXPANSION PRESSURE
INTERMEDIATE BLEED PRESSURE
PILOT SUPPLY PRESSURE
INTERMEDIATE PRESSURE
LOADING PRESSURE
BYPASS PRESSURE
BACK PRESSURE
PUMP PRESSURE
BOOST PRESSURE
EXHAUST
PILOT LOADING PRESSURE
VENT HEADER PRESSURE
INLET BLEED PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
TANK PRESSURE
VACUUM PRESSURE
PRE-EXPANSION PRESSURE
INTERMEDIATE BLEED PRESSURE
PILOT SUPPLY PRESSURE
INTERMEDIATE PRESSURE
LOADING PRESSURE
PUMP PRESSURE
BYPASS PRESSURE
BACK PRESSURE
BOOST PRESSURE
EXHAUST
PILOT LOADING PRESSURE
VENT HEADER PRESSURE
INLET BLEED PRESSURE
Vent
Figure 3. Type ACE97 Pad Off / Depad On
POPPET
O-RING
SEAT
ROLLING
DIAPHRAGM
CAGE
INLET
CLOSED PILOT
REGULATOR
ACTUATOR
SENSING
CONNECTION
DIAGNOSTIC
PORT
INERT GAS IN PAD VALVE TANK
CONNECTION
DEPAD
MAIN
VALVE
ON/OFF
DIAGNOSTIC
GAUGE
DEPAD PILOT
LOADING PRESSURE
EXHAUSTED BACK TO TANK
INLET PRESSURE
ATMOSPHERIC PRESSURE
TANK PRESSURE
VENT HEADER PRESSURE
PILOT LOADING PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
TANK PRESSURE
VACUUM PRESSURE
PRE-EXPANSION PRESSURE
INTERMEDIATE BLEED PRESSURE
PILOT SUPPLY PRESSURE
INTERMEDIATE PRESSURE
LOADING PRESSURE
PUMP PRESSURE
BYPASS PRESSURE
BACK PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
TANK PRESSURE
VACUUM PRESSURE
PRE-EXPANSION PRESSURE
INTERMEDIATE BLEED PRESSURE
PILOT SUPPLY PRESSURE
INTERMEDIATE PRESSURE
LOADING PRESSURE
BYPASS PRESSURE
BACK PRESSURE
PUMP PRESSURE
BOOST PRESSURE
EXHAUST
PILOT LOADING PRESSURE
VENT HEADER PRESSURE
INLET BLEED PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
TANK PRESSURE
VACUUM PRESSURE
PRE-EXPANSION PRESSURE
INTERMEDIATE BLEED PRESSURE
PILOT SUPPLY PRESSURE
INTERMEDIATE PRESSURE
LOADING PRESSURE
PUMP PRESSURE
BYPASS PRESSURE
BACK PRESSURE
BOOST PRESSURE
EXHAUST
PILOT LOADING PRESSURE
VENT HEADER PRESSURE
INLET BLEED PRESSURE
Vent
CONTROLLED
PRESSURE
RANGE SPRING
MAIN
VALVE
SPRING
E0004
VENT
Type ACE97
5
NPS 1 and 2 / DN 25 and 50 Pad Valves
(Figure 2)
When tank pressure decreases below the pad setpoint
(due to pump-out operations or thermal cooling), the
actuator diaphragm moves downward pushing open
the pad pilot. This creates ow from the pad loading
chamber to downstream. When pad loading pressure
decreases, the force created by inlet pressure on
the pad main valve plug overcomes the main spring
force and opens the main valve plug allowing ow
through the pad valve to the tank. Once tank pressure
reaches pad setpoint, the pad pilot closes, pad loading
pressure equalizes with inlet pressure and the pad
valve closes.
NPS 1/2 / DN 15 Pad Valve (Not Shown)
The NPS 1/2 / DN 15 pad valve has a main valve only.
When tank pressure decreases below the pad setpoint
the actuator diaphragm moves downward pushing the
valve plug open and allowing ow through the pad
valve to the tank.
Depad (Figure 3)
When tank pressure increases above the depad
setpoint (due to pump-in operations or thermal
heating), the actuator diaphragm moves upward and
pushes open the depad pilot. This releases depad
loading pressure (nitrogen or other supply gas). When
depad pilot loading pressure decreases, the depad
main valve opens by a spring and allows ow from the
tank to the vent or recovery system.
The blanketing (padding) gas is used as the pilot uid.
The link between the actuator and the depad main
valve is provided by the depad pilot valve, which is
located on top of the actuator. The depad pilot valve
is connected to the actuator by an adjustable coupling,
which can be rotated to adjust the depad setpoint. A
locknut is provided on the depad pilot valve to secure
the setpoint adjustment.
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
TANK PRESSURE
VACUUM PRESSURE
PRE-EXPANSION PRESSURE
INTERMEDIATE BLEED PRESSURE
PILOT SUPPLY PRESSURE
INTERMEDIATE PRESSURE
LOADING PRESSURE
PUMP PRESSURE
BYPASS PRESSURE
BACK PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
TANK PRESSURE
VACUUM PRESSURE
PRE-EXPANSION PRESSURE
INTERMEDIATE BLEED PRESSURE
PILOT SUPPLY PRESSURE
INTERMEDIATE PRESSURE
LOADING PRESSURE
BYPASS PRESSURE
BACK PRESSURE
PUMP PRESSURE
BOOST PRESSURE
EXHAUST
PILOT LOADING PRESSURE
VENT HEADER PRESSURE
INLET BLEED PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
TANK PRESSURE
VACUUM PRESSURE
PRE-EXPANSION PRESSURE
INTERMEDIATE BLEED PRESSURE
PILOT SUPPLY PRESSURE
INTERMEDIATE PRESSURE
LOADING PRESSURE
PUMP PRESSURE
BYPASS PRESSURE
BACK PRESSURE
BOOST PRESSURE
EXHAUST
PILOT LOADING PRESSURE
VENT HEADER PRESSURE
INLET BLEED PRESSURE
Figure 4. Type ACE97 Pad Off / Depad Off
POPPET
O-RING
SEAT
ROLLING
DIAPHRAGM
CAGE
INLET
CLOSED PILOT
REGULATOR
ADJUSTABLE
DEADBAND
VENT
SENSING
CONNECTION
DIAGNOSTIC
PORT
INERT GAS IN PAD VALVE TANK
CONNECTION
DEPAD
MAIN
VALVE
ON/OFF
DIAGNOSTIC
GAUGE
DEPAD PILOT
ACTUATOR
LOADING PRESSURE
EXHAUSTED BACK TO TANK
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
TANK PRESSURE
VACUUM PRESSURE
PRE-EXPANSION PRESSURE
INTERMEDIATE BLEED PRESSURE
PILOT SUPPLY PRESSURE
INTERMEDIATE PRESSURE
LOADING PRESSURE
PUMP PRESSURE
BYPASS PRESSURE
BACK PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
TANK PRESSURE
VACUUM PRESSURE
PRE-EXPANSION PRESSURE
INTERMEDIATE BLEED PRESSURE
PILOT SUPPLY PRESSURE
INTERMEDIATE PRESSURE
LOADING PRESSURE
BYPASS PRESSURE
BACK PRESSURE
PUMP PRESSURE
BOOST PRESSURE
EXHAUST
PILOT LOADING PRESSURE
VENT HEADER PRESSURE
INLET BLEED PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
TANK PRESSURE
VACUUM PRESSURE
PRE-EXPANSION PRESSURE
INTERMEDIATE BLEED PRESSURE
PILOT SUPPLY PRESSURE
INTERMEDIATE PRESSURE
LOADING PRESSURE
PUMP PRESSURE
BYPASS PRESSURE
BACK PRESSURE
BOOST PRESSURE
EXHAUST
PILOT LOADING PRESSURE
VENT HEADER PRESSURE
INLET BLEED PRESSURE
INLET PRESSURE
ATMOSPHERIC PRESSURE
TANK PRESSURE
VENT HEADER PRESSURE
PILOT LOADING PRESSURE
CONTROLLED
PRESSURE
RANGE SPRING
MAIN
VALVE
SPRING
E0006
Type ACE97
6
Installation and Startup
!
WARNING
Personal injury, equipment damage, or
leakage due to escaping accumulated
gas or bursting of pressure-containing
parts may result if this gas blanketing
system is overpressured or installed
where service conditions could exceed
the limits given in the Specications
section or on the valve nameplate, or
where conditions exceed any ratings of
the adjacent piping, piping connections,
or compatibility of valve materials with
process uids.
To avoid such injury or damage, provide
pressure-relieving or pressure-limiting
devices (as required by Title 49, Part 192,
of the U.S. Code of Federal Regulations,
by the National Fuel Gas Code Title 54 of
the National Fire Codes of the National
Fire Protection Agency, or by other
applicable codes) to prevent service
conditions from exceeding those limits.
Additionally, physical damage to the
tank blanketing system could result in
personal injury and property damage
due to escaping gas or tank contents.
To avoid such injury and damage,
install the tank blanketing valve in
a safe location.
The Type ACE97 Pad-Depad valve is assembled and
preset to the customer specied pressure and setpoint.
The pressure ranges of the valve are stamped on the
nameplate attached to the upper actuator case.
1. Use qualied personnel when installing, operating,
and maintaining valves. Before installing, inspect
the main valve, pilot, and tubing for any shipment
damage or foreign material that may have
collected. Ensure that the body interior is clean
and the pipelines are free of foreign material.
Apply pipe compound only to the external pipe
threads with a threaded body, or use suitable
line gaskets and good bolting practices with
a anged body.
2. Inspect the nameplate on the upper actuator
case. It displays the model number, serial number,
blanketing gas supply pressure range, maximum
inlet pressure, Cv value, and set pressures. These
Figure 5. Type ACE97 Pad-Depad Valve Installation
E0629
SHUTOFF VALVE
SENSING LINE
SENSING
CONNECTION
VALVE TANK
CONNECTION
EMERGENCY
TANK VENT
VAPOR SPACE
TANK VALVE
LIQUID
DEPAD DIAGNOSTIC
GAUGE
NORMAL
TANK VENT
BLANKETING GAS
SUPPLY LINE
LINE STRAINER BLANKETING GAS
CONNECTION
INLET VALVE
INLET PRESSURE GAUGE
PAD DIAGNOSTIC
GAUGE
TANK VAPOR SPACE
PRESSURE GAUGE
VENT CONNECTION
Type ACE97
7
must agree with the system that you are Padding
(blanketing) or Depadding (recovering). The serial
number will be needed in any communication with
your local Sales Ofce.
3. Clean the gas padding (blanketing) supply lines of
all dirt and foreign material before connecting
them to the Type ACE97 Pad-Depad valve.
4. The valve should be mounted above the tank
with the actuator case in a horizontal position.
Four connections are required (see Figure 5):
a. Blanketing gas supply to the valve
b. Vapor recovery/process connection (vent)
c. System tank connection
d. Sensing line to the tank
Piping Considerations
Piping must be capable of supporting the weight of
the system. Use pipe supports when necessary.
Refer to Figure 5.
Inlet Piping
The padding (blanketing) gas supply line should be
equipped with a Number 100 mesh strainer to remove
dirt and pipe scale. Inlet piping must be sized to
adequately deliver padding (blanketing) gas at the
specied inlet pressure under full ow conditions.
CAUTION
Undersized piping may inadequately
deliver Padding (blanketing) gas at
the specied inlet pressure under full
ow conditions. This may result in
unacceptable performance under high
demand conditions.
Outlet Piping
Valve outlet is piped into the tank vapor space.
Outlet piping should be self-draining to the tank and
of equal or greater size than the Type ACE97 valve
tank connection. The valve should be situated
above and as close as possible to the tank vapor
space for best performance.
CAUTION
Unnecessarily long or restricted outlet
piping may result in poor setpoint control.
Sensing Line
The sensing line should be 1/2-inch / 13 mm tubing
or pipe, must slope toward the tank, and should not
contain low points (or traps) that could catch liquid.
The sensing line must enter the tank above the liquid
level at a point that senses the vapor space pressure
and is free from turbulence associated with tank
nozzles or vents.
Note
Best control is obtained when both
connections to the tank are separate.
If the tank has only one available
nozzle, contact Regulator Technologies
for alternate methods of installation.
A Single Array Manifold (S.A.M.) is
available for such situations.
Vent Connection
The vent connection must be self-draining, facing
away from the valve, and of equal or greater size than
the valve tank connection.
Tank Venting
The tank may require normal and emergency vents.
The Type ACE97 Pad-Depad valve does not perform
these functions, it only controls the vapor space
pressure under process conditions.
Diagnostic Gauges
An on/off diagnostic gauge is mounted on the depad
main valve at the inlet to the cylinder. The face on
the gauge is marked to indicate whether the main pad
valve is opened, closed, or throttled.
Shutoff Valves
Note
Safety considerations may dictate
shutoff valves between the tank and
Type ACE97 valve.
Inlet (isolation) valves are desirable for servicing the
Type ACE97 valve. If this valve was not ordered with
an inlet pressure gauge, it is advisable to install a
gauge between the inlet isolation (full-port) valve and
the padding (blanketing) valve.
Type ACE97
8
Startup, Adjustment, and Shutdown
CAUTION
If required, tank vents (normal
and emergency) must be in place
and operating.
Startup
CAUTION
Always open the tank shutoff valve prior
to the inlet shutoff valve. Failure to do
so could result in inlet pressure being
applied to the actuator casing, potentially
damaging it. Refer to Figure 5.
1. Open the tank and sensing line shutoff valves
(between the Type ACE97 valve and tank).
2. A tank vapor space pressure gauge should be
installed and visible.
3. Slowly open the inlet shutoff valve (to the pad
valve) and leave it fully open.
4. Monitor the tank vapor space pressure.
Adjustment
The setpoint of this unit is factory set. If an adjustment
is to be made, it should be made in small increments
while the unit is controlling tank pressure. It is difcult
to make eld adjustments due to the slow changes in
tank pressure.
To change the pad (blanketing) setpoint:
1. Disconnect the tubing from the depad pilot valve
(See Figure 6).
2. Loosen the locknut (See Figure 7), but maintain its
position in relation to the adjusting coupling.
Doing so leaves the depad setpoint unchanged.
3. Separate the depad pilot valve from the actuator
by unthreading and removing.
4. Unthread and remove the adjusting coupling.
5. Increase the pad setpoint by turning the adjusting
screw clockwise. (Turning the screw counterclockwise
decreases the setpoint). See Figure 7.
6. Replace the depad adjusting collar against the
locknut to re-establish the depad setpoint.
To change the depad setpoint:
1. Loosen the locknut below the adjusting coupling.
2. Rotate the collar to change the setpoint. (The
bottom of the coupling—nearest the locknut—is
left-hand threaded).
3. Tighten the locknut.
E0679
Figure 7. Changing the Pad Setpoint
ADJUSTING SCREW
LOCKNUT
Figure 6. Unthreading the Adjusting Coupling
E0678
TUBING
COUPLING
ACTUATOR
Type ACE97
9
Table 2. Diagnostic Analysis Pressure Ranges
DIAGNOSTIC STATUS
Equal to inlet supply pressure Pilot and main valves are closed.
Tank pressure is at or above set pressure.
Slightly below inlet supply pressure Pilot valve supplies gas to tank. Tank
pressure is just below set pressure.
Well below inlet supply pressure
Pilot and main valves are both
supplying gas to the tank. Tank
pressure is below setpoint.
Shutdown
In any installation it is important to open and close
valves slowly and to close the inlet shutoff valve rst
when shutting down the system.
Maintenance
Valve parts are subject to normal wear and must be
inspected and replaced as necessary. The frequency
of inspection and replacement of parts depend on the
severity of service conditions and the requirements
of local, state, and federal regulations. Due to the
care Regulator Technologies takes in meeting all
manufacturing requirements, use only replacement parts
manufactured or furnished by Regulator Technologies.
All O-rings, gaskets, and seals should be lubricated
with a good grade of general purpose lubricant and
installed gently rather than forced into position.
Approved lubricants, sealants, thread protectors,
and adhesives are as follows:
Lubricants: Dow Corning® #111, Dow
Corning® #3452 Chemical Resistant Lubricant
Thread Protector: Anti-Seize
Sealant: Loctite® PST #592,
Polytetrauoroethylene (PTFE) Tape
Adhesive: Loctite® #222
Be certain that nameplates are updated to accurately
indicate any eld changes in equipment, materials,
service conditions, or pressure settings.
Monthly Maintenance
1. Visually inspect the unit to ensure tight
connections, tight seals, and safe operation.
2. Observe the pad and depad (tank blanketing
and vapor recovery) pressures.
3. Inspect the inlet pressure for the proper range
(stamped on the valve nameplate).
Table 3. Diagnostics Table: Cv 1 through 4, Inlet Pressure Range Spring 25 to 50 psig / 1,7 to 3,4 bar
ACTUAL INLET SUPPLY
PRESSURE TO VALVE
DIAGNOSTIC PORT PRESSURE
Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open
psig bar psig bar psig bar psig bar
25 1,7 24 1,7 9 0,62 2 0,14
30 2,1 29 2,0 13 0,90 6 0,41
35 2,4 34 2,3 16 1,1 9 0,62
40 2,8 39 2,7 20 1,4 13 0,90
45 3,1 44 3,0 24 1,7 17 1,2
50 3,4 49 3,4 28 1,9 21 1,4
Table 4. Diagnostics Table: Cv 1 through 4, Inlet Pressure Range Spring 51 to 120 psig / 3,5 to 8,3 bar
ACTUAL INLET SUPPLY
PRESSURE TO VALVE
DIAGNOSTIC PORT PRESSURE
Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open
psig bar psig bar psig bar psig bar
51 3,5 50 3,4 29 2,0 5 0,35
60 4,1 59 4,1 36 2,5 12 0,83
70 4,8 69 4,8 43 3,0 19 1,3
80 5,5 79 5,4 51 3,5 27 1,9
90 6,2 89 6,1 59 4,1 34 2,3
100 6,9 99 6,8 66 4,5 42 2,9
110 7,6 109 7,5 74 5,1 50 3,4
120 8,3 119 8,2 81 5,6 57 3,9
Type ACE97
10
Table 5. Diagnostics Table: Cv 1 through 4, Inlet Pressure Range Spring 121 to 200 psig / 8,3 to 13,8 bar
ACTUAL INLET SUPPLY
PRESSURE TO VALVE
DIAGNOSTIC PORT PRESSURE
Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open
psig bar psig bar psig bar psig bar
121 8,3 120 8,3 74 5,1 30 2,1
130 9,0 129 8,9 81 5,6 37 2,5
140 9,6 139 9,6 88 6,1 45 3,1
150 10,3 149 10,3 96 6,6 53 3,6
160 11,0 159 10,9 104 7,2 60 4,1
170 11,7 169 11,7 111 7,6 68 4,7
180 12,4 179 12,3 119 8,2 75 5,2
190 13,1 189 13,0 127 8,8 83 5,7
200 13,8 199 13,7 134 9,2 91 6,3
Table 6. Diagnostics Table: Cv 7.5 through 10, Inlet Pressure Range Spring 25 to 50 psig / 1,7 to 3,4 bar
ACTUAL INLET SUPPLY
PRESSURE TO VALVE
DIAGNOSTIC PORT PRESSURE
Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open
psig bar psig bar psig bar psig bar
25 1,7 24 1,7 11 0,76 0 0,00
30 2,1 29 2,0 14 0,96 3 0,21
35 2,4 34 2,3 17 1,2 6 0,41
40 2,8 39 2,7 21 1,4 90,62
45 3,1 44 3,0 24 1,7 13 0,89
50 3,4 49 3,4 27 1,9 16 1,1
Table 7. Diagnostics Table: Cv 7.5 through 10, Inlet Pressure Range Spring 51 to 120 psig / 3,5 to 8,3 bar
ACTUAL INLET SUPPLY
PRESSURE TO VALVE
DIAGNOSTIC PORT PRESSURE
Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open
psig bar psig bar psig bar psig bar
51 3,5 50 3,4 24 1,7 3 0,21
60 4,1 59 4,1 30 2,1 90,62
70 4,8 69 4,8 36 2,5 15 1,0
80 5,5 79 5,4 42 2,9 22 1,5
90 6,2 89 6,1 49 3,4 28 1,9
100 6,9 99 6,8 55 3,8 34 2,3
110 7,6 109 7,5 61 4,2 41 2,8
120 8,3 119 8,2 68 4,7 47 3,2
Table 8. Diagnostics Table: Cv 7.5 through 10, Inlet Pressure Range Spring 121 to 200 psig / 8,3 to 13,8 bar
ACTUAL INLET SUPPLY
PRESSURE TO VALVE
DIAGNOSTIC PORT PRESSURE
Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open
psig bar psig bar psig bar psig bar
121 8,3 120 8,3 63 4,3 31 2,1
130 9,0 129 9,0 69 4,8 37 2,5
140 9,6 139 9,6 75 5,2 43 3,0
150 10,3 149 10,3 82 5,6 49 3,4
160 11,0 159 10,9 88 6,1 56 3,9
170 11,7 169 11,7 94 6,9 62 4,3
180 12,4 179 12,3 101 7,0 68 4,7
190 13,1 189 13,0 107 7,4 75 5,2
200 13,8 199 13,7 113 7,8 81 5,6
Type ACE97
11
Table 9. Diagnostics Table: Cv 20 through 60, Inlet Pressure Range Spring 25 to 50 psig / 1,7 to 3,4 bar
ACTUAL INLET SUPPLY
PRESSURE TO VALVE
DIAGNOSTIC PORT PRESSURE
Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open
psig bar psig bar psig bar psig bar
25 1,7 24 1,7 16 1,1 5 0,21
30 2,1 29 2,0 20 1,4 90,62
35 2,4 34 2,3 24 1,6 14 0,96
40 2,8 39 2,7 29 2,0 18 1,2
45 3,1 44 3,0 33 2,2 23 1,6
50 3,4 49 3,4 38 2,6 27 1,9
Table 10. Diagnostics Table: Cv 20 through 60, Inlet Pressure Range Spring 51 to 120 psig / 3,5 to 8,3 bar
ACTUAL INLET SUPPLY
PRESSURE TO VALVE
DIAGNOSTIC PORT PRESSURE
Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open
psig bar psig bar psig bar psig bar
51 3,5 50 3,4 39 2,7 11 0,76
60 4,1 59 4,1 48 3,3 19 1,3
70 4,8 69 4,8 57 3,9 28 1,9
80 5,5 79 5,4 66 4,5 37 2,5
90 6,2 89 6,1 75 5,2 46 3,2
100 6,9 99 6,8 84 5,8 55 3,8
110 7,6 109 7,5 93 6,4 64 4,4
120 8,3 119 8,2 102 7,0 73 5,0
Table 11. Diagnostics Table: Cv 20 through 60, Inlet Pressure Range Spring 121 to 200 psig / 8,3 to 13,8 bar
ACTUAL INLET SUPPLY
PRESSURE TO VALVE
DIAGNOSTIC PORT PRESSURE
Pressure when Pilot Starts to Open Pressure when Main Valve Starts to Open Pressure when Main Valve is Fully Open
psig bar psig bar psig bar psig bar
121 8,3 120 8,3 103 7,1 60 4,1
130 9,0 129 8,9 111 7,6 68 4,7
140 9,6 139 9,6 120 8,3 77 5,3
150 10,3 149 10,3 129 8,9 86 5,9
160 11,0 159 10,9 138 9,5 95 6,5
170 11,7 169 11,7 147 10,1 104 7,2
180 12,4 179 12,3 156 10,8 113 7,8
190 13,1 189 13,0 165 11,4 122 8,4
200 13,8 199 13,7 174 12,0 134 9,2
Annual Maintenance
1. Visually inspect the unit to ensure tight
connections, tight seals, and safe operation.
2. Observe the pad and depad (tank blanketing
and vapor recovery) pressures.
3. Inspect the inlet pressure for the proper range
(stamped on the valve nameplate).
4. Visually inspect valve for any external wear.
5. If there is evidence of leakage or unstable
internal motion, a rebuild with seal replacement
and relubrication may be in order.
Pad Valve Diagnostics
Note
A pressure gauge must be installed
in the pad valve diagnostic port to
perform diagnostic analysis. See
Figures 2 through 4.
Diagnostics are an optional feature of the NPS 1 and 2
/ DN 25 and 50 Type ACE97 valves and aid in evaluating
valve operation. The diagnostic analysis relies on the
relationship of pad valve pilot pressure and the inlet
pressure of the pad valve. The basic relationships
Type ACE97
12
are shown in Table 2. In order to evaluate a valve,
examine the valve nameplate to determine the Cv and
inlet pressure range (main valve spring).
There are four pressures involved in evaluating a
valve: actual inlet pressure, pressure to start opening
pilot valve, pressure to start opening main valve, and
pressure to fully open main valve.
Actual Inlet Pressure: The gas pressure supplied
to the inlet of the valve. This is the maximum
diagnostic pressure.
Pressure to Start Opening Pilot Valve: The
diagnostic pressure drops to this value as the valve
senses decreasing tank pressure. The main pad
valve remains closed at this pressure.
Pressure to Start Opening Main Valve: The
diagnostic pressure drops to this level as the tank
pressure decreases the valve setpoint. The pilot is
fully open at this pressure.
Pressure to Fully Open Main Valve: At this point,
both the main valve and pilot valve are fully open
and supplying gas to the tank.
Follow these steps and refer to the diagnostics tables
(Tables 3 through 11) to evaluate a valve under actual
operating conditions:
1. Select the table (Tables 3 through 11) that
corresponds to the Cv and inlet pressure range
of your pad valve.
2. Determine the actual valve operating inlet pressure
in the rst column of the diagnostics table.
3. In the second column of the table, determine the
pressure of the pilot as it opens.
4. Determine the diagnostic pressure for the start to
open pressure of the main valve in the third column.
5. The fourth column displays the diagnostic pressure
for the full open pressure of the main valve.
Disassembly and Assembly
CAUTION
Before removing the valve from the line,
ensure that it is isolated from the gas
supply pressure and that all pressure
has been released from the valve. All
tank connections must be closed or
sealed in accordance with your plant’s
operating and safety procedures.
If installed, electrical connections
to the explosion proof switch must
be deactivated before opening the
enclosure or disconnecting the
wiring (in accordance with codes
and safety practices).
Refer to the following instructions and to Figures 11
through 20 in the Parts Ordering section when
performing assembly and disassembly operations.
It is recommended that all seals and diaphragms be
replaced whenever a valve is disassembled and
re-assembled. Parts kits are available through your
local Sales Ofce.
Note
Have your model number, serial number,
inlet pressure, and set pressure range
available when ordering parts. Valve
information is on the nameplate (on the
upper actuator case).
The Type ACE97 Pad-Depad valve should be viewed
as four connected elements. These include the pad
valve, the actuator, the depad pilot valve, and the
depad main valve. See Figure 1.
Disassembly
When performing disassembly operations, please take
care not to adjust or alter the pressure setpoints. Read
the following instructions carefully before proceeding.
Depad Pilot Valve Removal
Refer to Figures 11 and 19.
1. Disconnect the tubing lines (key 143, three
connections) from the depad pilot valve.
2. Loosen the locknut (key 99) but maintain its
position in relation to the adjusting coupling
(key 107). By maintaining the position of the
locknut and the lower cage (key 110), the depad
setpoint remains unchanged.
3. Separate the pilot valve from the spring case
(key 120) by unthreading and removing.
Depad Pilot Valve Disassembly
Refer to Figure 19.
1. Unthread and remove the coupling (key 107).
Type ACE97
13
2. Unthread the lower cage (key 110).
3. Remove the rain cap (key 109).
4. Unthread the upper cage (key 106).
5. Remove the return spring (key 101).
6. Place a pin through the follower (key 103) and
unthread the nut (key 31). This will release the
internal components.
7. Remove all internal components, seals, and the
rolling diaphragm (key 38).
Actuator Disassembly
Refer to Figure 20.
1. Remove actuator case cap screws, lock washers,
and nuts (keys 93, 28, and 31).
2. Remove the upper actuator case (key 114).
3. Remove the spring (key 95). This may be one or
more springs and associated hardware, depending
on the actual spring range. See Figure 12.
4. Remove the actuator stem (key 94), diaphragm
bolt (key 117), upper diaphragm plate (key 119),
diaphragm (key 163), and lower diaphragm
plate (key 116).
5. Hold the actuator stem (key 94) with soft-jawed
pliers and unthread the diaphragm bolt (key 117).
6. Separate the upper diaphragm plate (key 119), lower
diaphragm plate (key 116), and diaphragm (key 163).
7. Remove the hex-head cap screws and lock
washers (keys 29 and 28) that attach the lower
actuator case (key 113) to the body (key 18) or
bonnet (key 17).
8. Remove the lower actuator case (key 113) and
gasket (key 27) from the valve body (key 18) or
bonnet (key 17).
Pad Valve Disassembly
For NPS 1/2 / DN 15 pad valve, no further disassembly
steps are required. Proceed to Pad Valve Cage
Disassembly for NPS 1/2 / DN 15 valve section.
For NPS 1 and 2 / DN 25 and 50 pad valves, perform
the following procedures for pad valve disassembly.
Refer to Figures 14 and 15.
1. For NPS 2 / DN 50 valve: Remove the cap screws
and lock washers (keys 50 and 51) that attach the
bonnet (key 17) to the body (key 18).
2. Lift the bonnet (key 17) from the body (key 18).
3. Remove the piston (key 25), main valve spring
(key 26), spring shim (key 34, if required), and spring
guide (key 49, if required) from the bonnet (key 17).
4. Unthread the screw (key 20) and remove from the
main valve, along with the lock washer (key 21).
Figure 8. NPS 1/2 / DN 15 Pad Valve Cage Assembly
W8181
CAGE
(KEY 52)
PISTON
(KEY 37)
O-RING
(KEY 39)
CROSS-DRILLED HOLE
POPPET (STEM)
(KEY 42)
ROLLING DIAPHRAGM
(KEY 38)
W8162
W8161
CAGE
(KEY 40)
PISTON
(KEY 37)
O-RING
(KEY 39)
CROSS-DRILLED HOLE
POPPET (STEM)
(KEY 42)
ROLLING DIAPHRAGM
(KEY 38)
W8162
Figure 9. NPS 1 and 2 / DN 25 and 50 Pad Valve
Cage Assembly
LOWER CAGE
(KEY 35)
Type ACE97
14
5. Remove the plug (key 22) from the main valve.
6. Insert wooden dowel rod (or similar blunt tool)
through the bottom of the bonnet bore to remove
the cage sub-assembly (keys 35 and 40).
Pad Valve Cage Disassembly (NPS 1/2
/ DN 15 valve)
Refer to Figures 8 and 13.
1. Remove the cage (key 52) from the body (key 18)
by slowly applying shop air (approximately 20 psig
/ 1,4 bar) at the inlet of the body. Use your hand
to safely catch the cage as it is removed from the
body. See Figure 8.
2. Remove the pilot valve from the cage (key 52) by
pressing on the poppet (key 42) stem.
Use soft-jaws to restrain the piston (key 37)
without damaging it. Do not hold the
poppet (key 42) by the stem.
3. To unscrew the piston (key 37) from the poppet
(key 42), insert a small drill bit into the cross-drilled
holes on the poppet to turn and loosen. Unthread
the poppet from the piston and remove the rolling
diaphragm (key 38).
Pad Pilot Valve/Cage Disassembly (NPS 1
and 2 / DN 25 and 50 valves)
Refer to Figures 9, 14, and 15.
1. The upper cage (key 40) will readily separate from
the lower cage (key 35). See Figure 9.
2. Gently press the poppet stem (key 42) to remove
the pilot from the upper cage (key 40).
CAUTION
Use soft-jaws to restrain the piston
(key 37) without damaging it. Do not
hold the poppet (key 42) by the stem.
3. To unscrew the piston (key 37) from the poppet
(key 42), insert a small drill bit into the
cross-drilled holes on the poppet to turn and
loosen. Unthread the poppet from the piston
and remove the rolling diaphragm (key 38).
Depad Main Valve Disassembly
Refer to Figures 16, 17, and 18.
1. Remove the tubing (key 143) from the end of the
bonnet (key 87).
2. For 1 NPT Main Valve: Unthread the bonnet
(key 87) from the depad valve body (key 91).
Remove the retaining ring (key 89), cap (key 90),
and O-ring (key 88).
For 2 NPT and NPS 3 and 4 / DN 80 and 100
Main Valves: Unthread the ange bolts (key 160)
and washer (key 161). Remove the bonnet
(key 87) from the depad valve body (key 91).
3. Gently remove the internal components by lifting
the depad main valve stem (key 75).
CAUTION
When working with the main valve stem
sub-assembly, take care not to scratch
the coated surface (the surface that
operates in contact with the seal (key 81)).
Refer to Figure 16, 17, or 18.
4. Hold the main valve stem (key 75) on its at sides
in a soft-jawed vise. Apply enough pressure to
keep the main valve stem from turning.
5. Remove the cap screw (key 78), lock washer
(key 79), and cage (key 77).
6. Separate the cage (key 77) and seat O-ring (key 76)
from the main valve stem (key 75).
CAUTION
The main valve return spring (key 84) is
compressed and could cause damage or
injury. Remove this spring with care.
7. For 1 and 2 NPT Main Valves: Remove
spring guide (key 85) by removing the retaining
ring (key 86).
For NPS 3 and 4 / DN 80 and 100 Main Valves:
Remove the spring guide (key 82), tap bolt
(key 126), and lock washer (key 79).
8. Remove the spring (key 84) and seal retaining
plate (key 83).
9. Remove the O-rings (key 82) and the seal
retainer (key 80).
10. Remove the stem seal (key 81).
Type ACE97
15
Assembly
Before proceeding, read the following instructions.
Refer to the gures that pertain to your valve
(Figures 11 through 20) and review the list of approved
lubricants, sealants, and adhesives (in the Maintenance
section) when performing assembly operations.
1. Clean and inspect all parts.
2. Replace all O-rings, seals, gaskets, and any parts
that are worn or damaged.
3. Lightly lubricate all O-rings and metal parts in
moving contact.
4. Seal all pipe ttings.
Depad Pilot Valve Assembly
Refer to Figure 19.
1. Invert the rolling diaphragm (key 38) and place it
over the threaded portion of the follower (key 103).
2. Install the poppet (key 105) onto the threaded
portion of the follower (key 103) with the tapered
end against the rolling diaphragm (key 38).
3. Install the O-ring (key 104) onto the poppet (key 105).
4. Place this sub-assembly into the center cage
(key 108) from the end with internal threads.
5. Install the seal retainer and O-ring (keys 127
and 104) onto the follower (key 103).
6. Apply Loctite® #222 to the threads on the follower
(key 103). Thread the nut (key 31) onto the follower.
7. Insert a small drill bit into the cross-drilled hole on
the follower (key 103), turn, and tighten the nut
(key 31) and internal parts.
8. Install the return spring (key 101) onto the seal
retainer (key 127).
9. Place the gasket (key 102) into the cavity of the
upper cage (key 106) and thread the upper cage
onto the center cage (key 108).
10. Place the rain cap (key 109) onto the threaded
portion of the lower cage (key 110). The bead on
the rolling diaphragm (key 38) must be positioned
to engage the groove in the lower cage.
11. Thread the lower cage (key 110) onto the center
cage (key 108). Tighten all parts uniformly.
12. Lubricate the threads of the coupling (key 107)
with anti-seize. Thread the lower cage (key 110)
onto the coupling (key 107) one full turn.
Note
The locknut (key 99) must be in place
when attaching the lower cage (key 110)
and coupling (key 107) to the spring
case (key 120).
13. Thread the coupling (key 107) onto the spring
case (key 120) one full turn (while restraining the
coupling from turning against the lower cage
(key 110)). Turn the coupling (while restraining the
center cage (key 108)) and spring case.
Note
The coupling (key 107) is left-hand
threaded on the end with the knurled
(rough) nish. The opposite end is
right-hand threaded.
Pad Valve Cage Assembly (NPS 1/2
/ DN 15 valve)
Refer to Figures 8 and 13.
1. Place the rolling diaphragm (key 38) over the
threaded portion of the piston (key 37). Use
caution not to place the rolling diaphragm upside
down (refer to Figure 8). Apply Loctite® #222 to
the piston threads. Thread the poppet (key 42)
onto the piston. Use soft-jaws to hold the piston.
Insert a small drill bit into the cross-drilled holes on
the poppet to turn and tighten.
2. Install the O-ring (key 39) onto the poppet (key 42).
3. Lightly lubricate the piston (key 37).
4. Place the sub-assembly into the cage (key 52).
Pad Pilot Valve/Cage Assembly (NPS 1 and 2
/ DN 25 and 50 valves)
Refer to Figures 9, 14, and 15.
1. Install O-rings (key 16) into the bonnet (key 17).
2. Apply Loctite® #222 to the piston threads. Place
the rolling diaphragm (key 38) over the threaded
portion of the piston (key 37). Position the rolling
diaphragm bead as shown in Figure 9.
CAUTION
Do not place the rolling diaphragm
upside down.
Type ACE97
16
3. Thread the poppet (key 42) onto the piston (key 37).
Use soft-jawed pliers to restrain the piston so it is
not damaged. Do not hold the poppet by the stem.
Insert a small drill bit into the cross-drilled hole on
the poppet stem (key 42) to turn and tighten.
4. Slide the O-ring (key 39) onto the poppet (key 42).
5. Place the pilot sub-assembly into the upper
cage (key 40).
6. Press the lower cage (key 35) and upper cage
(key 40) together to ensure the groove in the lower
cage engages the rolling diaphragm (key 38) bead.
Note
Ensure that the rolling diaphragm bead
is positioned so that it sits in the groove
of the lower cage (See Figure 9). If it
does not, the rolling diaphragm was
installed upside down in step 2.
7. Remove the lower cage (key 35).
8. Lubricate the piston (key 37) and lower cage (key 35)
groove with Dow Corning® #111.
9. Install the pilot spring (key 36) into the piston
(key 37) and re-install the lower cage (key 35).
10. Hold the pilot/cage sub-assembly together and
insert it into the bonnet (key 17). Press rmly
(the bonnet O-rings will offer resistance).
11. Press the poppet (key 42) stem. It should
freely move up and down. If it does not, repeat
the procedure to this point to determine the cause.
Pad Valve Assembly (NPS 1/2 / DN 15 valve)
Refer to Figure 13.
1. Install O-rings (key 16) into the body (key 18).
2. Place the spring (key 36) into the body (key 18) cavity.
3. Insert the cage (key 52) and valve sub-assembly
into the body (key 18) cavity.
4. Press the body (key 18) and cage (key 52) together
to engage the rolling diaphragm bead into the groove.
Note
Ensure that the rolling diaphragm bead
is positioned so that it sits in the groove
of the body (see Figure 14). If it does
not, the rolling diaphragm was installed
upside down in step 1 of the Pad Valve
Cage Assembly (NPS 1/2 / DN 15 valve).
5. Press and release the poppet (key 42) stem. It
should freely move up and down. If it does not,
repeat the procedure to this point to determine
the cause.
6. Place the O-ring (key 41) onto the cage (key 52).
Pad Valve Assembly (NPS 1 and 2 / DN 25
and 50 valve)
Refer to Figures 14 and 15.
1. Prepare the main piston (key 25) by installing
the plug (key 22) and O-ring (key 23) with the
screw and lock washer (keys 20 and 21). Apply
Loctite® #222 to the screw threads.
2. Install the main valve spring (key 26), spring
shim (key 34, if required), and spring guide (key 49,
if required) into the piston (key 25).
3. Place the valve sub-assembly (piston (key 25),
spring (key 26), and plug (key 22)) into the body
(key 18).
4. Place an O-ring (key 19) into the body (key 18).
5. Place the bonnet (key 17) onto the body (key 18)
and main valve (key 25).
6. Press rmly to seat the bonnet O-ring joint. If you
are performing assembly operations on a
NPS 2 / DN 50 valve, attach the bonnet (key 17)
to the body (key 18) with four cap screws and lock
washers (keys 51 and 52).
Figure 10. NPS 2 / DN 50 Pad Valve Piston and Spring
W8160
PISTON (MAIN VALVE)
SPRING (KEY 26)
O-RING
(KEY 24)
PISTON (MAIN)
(KEY 25)
O-RING
(KEY 23)
PLUG
(KEY 22)
LOCK WASHER
(KEY 21)
SCREW
(KEY 20)
Type ACE97
17
Actuator Assembly
Refer to Figure 20.
1. Place the actuator gasket (key 27) and lower actuator
case (key 113) onto the body (key 18). Secure with
lock washers and hex-head screws (keys 28 and 29).
Tighten all hex-head screws uniformly.
2. Place the actuator gasket (key 27) onto the pad valve.
3. Attach the lower actuator case (key 113) to the
pad valve with cap screws, lock washers (keys 29
and 28), and seal bushings (key 46, NPS 1 / DN 25
valve only).
4. Place an O-ring (key 118) into the groove of the
diaphragm bolt (key 117).
5. Apply Loctite® #222 to the threads of the
diaphragm bolt (key 117).
6. Build the diaphragm sub-assembly with the lower
diaphragm plate (key 116), diaphragm (key 163),
and upper diaphragm plate (key 119). Fasten with
the diaphragm bolt (key 117) and actuator
stem (key 94).
7. Place the diaphragm sub-assembly into the lower
actuator case (key 113) and align the diaphragm
ange bolt holes with the actuator case ange holes.
8. Install the range spring(s) (key 95 and/or 96) and
associated hardware per your spring range, as
shown in Figure 12.
9. Set the upper actuator case (key 114) into
position, aligning the ange holes.
10. Place cap screws (key 29) in the aligned ange
holes and fasten with lock washers and nuts
(key 28 and 31). Tighten uniformly.
Depad Main Valve Assembly
Refer to Figures 16, 17, and 18.
Note
For the depad main valve assembly,
use Dow Corning® #3452 chemical
resistant lubricant.
1. Build the stem (key 75) assembly by installing the
seat O-ring (key 76) and cage (key 77) with the
cap screw (key 78) and lock washer (key 79). The
stem may be held on the at sides using soft-jaws
for this purpose.
2. Lubricate the main valve stem (key 75).
3. Carefully install the stem seal (key 81)—closed-end
rst—into the seal retainer (key 80).
4. Slide the seal retainer (key 80) over the stem
assembly with the open end of the stem seal (key 81)
facing up. Take care not to scratch the stem.
Slide the seal retaining plate (key 83) over the
stem assembly with the counter-bore facing up.
5. For 1 and 2 NPT Main Valves: Install
the spring (key 84) into the groove of the seal
retaining plate (key 83) and spring guide (key 85).
Secure with the retaining ring (key 86). Use a
small at screw driver to engage the notch in the
retaining ring. Twist to install the retaining ring
into the groove.
For NPS 3 and 4 / DN 80 and 100 Main Valves:
Install the spring (key 84) into the groove of the
seal retaining plate (key 83) and spring guide
(key 85). Secure with a cap screw and lock
washer (keys 126 and 79).
6. For 1 NPT and NPS 3 and 4 / DN 80 and 100 main
valves, place the O-ring (key 82) into the main
valve body (key 91). For 2 NPT main valve, place
the O-ring (key 82) into the groove of the seal
retainer (key 80). Carefully install the stem and
spring sub-assembly. Press down on the stem
(key 75) to ensure it is able to move. Install the
second O-ring (key 82).
7. For 1 NPT Main Valve: Lubricate the threads
of the bonnet (key 87) with anti-seize. Thread
into place and tighten.
For 2 NPT and NPS 3 and 4 / DN 80 and 100 Main
Valves: Install the bonnet (key 87) and secure with
cap screws and lock washers (keys 160 and 161).
Tighten uniformly.
8. Connect all tubing lines (key 143).
9. Reinstall the valve according to the instructions in
the Installation section of this manual.
Parts Ordering
Each Type ACE97 Pad-Depad valve is assigned a
serial number printed on the nameplate on the main
valve actuator. Refer to this number when contacting
your local Sales Ofce for assistance or when ordering
replacement parts. When ordering a replacement part,
be sure to reference the key number for each needed
part and include the complete 11-character part
number from the following parts list.
Type ACE97
18
Parts List
Key Description Part Number
Parts Kits
NPS 1/2 / DN 15 pad valve
(includes keys 16, 27, 38, 39, and 41)
Nitrile (NBR) 19B6041X012
Fluorocarbon (FKM) 19B6041X022
Peruoroelastomer (FFKM) 19B6041X032
Ethylenepropylene (EPDM - FDA) 19B6041X042
NPS 1 / DN 25 pad valve, Cv 1 through 4
(includes keys 16, 19, 23, 24, 27, 38, 39, 41, and 46)
Nitrile (NBR) 19B6043X012
Fluorocarbon (FKM) 19B6043X022
Peruoroelastomer (FFKM) 19B6043X032
Ethylenepropylene (EPDM - FDA) 19B6043X042
NPS 1 / DN 25 pad valve, Cv 5 through 10
(includes keys 16, 19, 23, 24, 27, 38, 39, 41, and 46)
Nitrile (NBR) 19B6044X012
Fluorocarbon (FKM) 19B6044X022
Peruoroelastomer (FFKM) 19B6044X032
Ethylenepropylene (EPDM - FDA) 19B6044X042
NPS 2 / DN 50 pad valve, Cv 20 through 60
(includes keys 16, 19, 23, 24, 27, 38, 39, and 41)
Nitrile (NBR) 19B6042X012
Fluorocarbon (FKM) 19B6042X022
Peruoroelastomer (FFKM) 19B6042X032
Ethylenepropylene (EPDM - FDA) 19B6042X042
Actuator (diaphragm/O-ring)
(includes keys 27, 38, 102, 104, 118, 121, and 163)
NBR/FFKM 19B6050X042
FKM/FFKM 19B6050X052
EPDM - FDA/FFKM 19B6050X062
16* O-ring (pad valve, 2 required)
Nitrile (NBR) 1F115306992
Ethylenepropylene (EPDM - FDA) 1F1153X0062
Fluorocarbon (FKM) 1F1153X0022
Peruoroelastomer (FFKM) 1F1153X0032
17 Bonnet (pad valve)
Cv 1 through 4 GC050929X12
Cv 7.5 through 10 GC050929X02
Cv 20 through 60 GC050919X62
18 Body (pad valve)
Cv 0.2 GC052930X32
Cv 0.4 GC052907X32
Cv 1 through 4 GE02623X012
Cv 7.5 through 10 GE02627X012
Cv 20 through 60 GC050927X62
19* O-ring (NPS 1 and 2 / DN 25 and 50 pad valves only)
Cv 1 through 10
Nitrile (NBR) 1C415706992
Ethylenepropylene (EPDM - FDA) 1C4157X0092
Fluorocarbon (FKM) 1C4157X0032
Peruoroelastomer (FFKM) 1C4157X0082
Cv 20 through 60
Nitrile (NBR) 1F3581X0082
Ethylenepropylene (EPDM - FDA) 1F3581X0102
Fluorocarbon (FKM) 1F3581X0022
Peruoroelastomer (FFKM) 1F3581X0092
20 Round-Head Machine Screw
(NPS 1 and 2 / DN 25 and 50 pad valves only)
NPS 1 / DN 25 pad valve 1A3776X0012
NPS 2 / DN 50 pad valve GC060225X02
21 Lock Washer (NPS 1 and 2 / DN 25 and 50 pad valves only)
NPS 1 / DN 25 pad valve GC060903X02
NPS 2 / DN 50 pad valve GC060906X02
22 Plug (NPS 1 and 2 / DN 25 and 50 pad valves)
Cv 1 GC053206X02
Cv 2 GC053205X02
Cv 4 GC053204X02
Cv 7.5 GC053213X02
Cv 10 GC053212X02
Cv 20 GC053220X02
Cv 45 GC053221X02
Cv 60 GC053218X02
23* O-ring (2 required, NPS 1 and 2 / DN 25 and 50 pad valves)
Cv 1 through 4
Nitrile (NBR) 1D2888X0032
Ethylenepropylene (EPDM - FDA) 1D2888X0042
Fluorocarbon (FKM) 1D2888X0052
Peruoroelastomer (FFKM) 1D2888X0022
Cv 7.5 through 10
Nitrile (NBR) 18A1088X022
Ethylenepropylene (EPDM - FDA) 18A1088X042
Fluorocarbon (FKM) 18A1088X052
Peruoroelastomer (FFKM) 18A1088X032
Cv 20 through 60
Nitrile (NBR) 1C628006992
Ethylenepropylene (EPDM - FDA) 1C6280X0102
Fluorocarbon (FKM) 1C6280X0012
Peruoroelastomer (FFKM) 1C6280X0092
24* O-ring (NPS 1 and 2 / DN 25 and 50 pad valves)
Cv 1 through 4
Nitrile (NBR) 1C782206992
Ethylenepropylene (EPDM - FDA) 1C7822X0122
Fluorocarbon (FKM) 1C7822X0132
Peruoroelastomer (FFKM) 1C7822X0112
Cv 7.5 through 10
Nitrile (NBR) 1D2375X0062
Ethylenepropylene (EPDM - FDA) 1D2375X0082
Fluorocarbon (FKM) 1D237506382
Peruoroelastomer (FFKM) 1D2375X0072
Cv 20 through 60
Nitrile (NBR) 1D785306992
Ethylenepropylene (EPDM - FDA) 1D7853X0032
Fluorocarbon (FKM) 1D7853X0042
Peruoroelastomer (FFKM) 1D7853X0012
25 Piston (main valve, NPS 1 and 2 / DN 25 and 50 pad valves)
Cv 1 through 4 GC053203X02
Cv 7.5 through 10 GC053211X02
Cv 20 through 60 GC053219X02
26 Spring (pad main valve)
NPS 1 / DN 25 pad valve
Cv 1 through 4
25 to 50 psig / 1,7 to 3,4 bar GC220704X22
51 to 120 psig / 3,5 to 8,27 bar GC220705X22
121 to 200 psig / 8,3 to 13,8 bar GC220706X22
Cv 7.5 through 10
25 to 50 psig / 1,7 to 3,4 bar GC220705X22
51 to 120 psig / 3,5 to 8,3 bar GC220706X22
121 to 200 psig / 8,3 to 13,8 bar GC220709X22
NPS 2 / DN 50 pad valve
Cv 20 through 60
25 to 50 psig / 1,7 to 3,4 bar GC220714X22
51 to 120 psig / 3,5 to 8,3 bar GC220712X22
121 to 200 psig / 8,3 to 13,8 bar GC220713X22
*Recommended Spare Part
Key Description Part NUmber
Type ACE97
19
27 Gasket (bonnet, pad valve) GC070429X32
28 Lock Washer (28 required) GC060906X02
29 Hex-Head Machine Screw (4 required)
NPS 1/2 / DN 15 body pad valve GC060220X02
NPS 1 / DN 25 body pad valve GC060219X02
NPS 2 / DN 50 body pad valve GC060220X02
31 Hex Nut (21 required) 1A3457K0012
34 Spring Shim (NPS 1 / DN 25 pad valve)
25 to 50 psig / 1,7 to 3,4 mbar GC053209X02
35 Lower Cage (NPS 1 and 2 / DN 25 and 50
pad valves) GC053002X02
36 Spring (pad pilot valve) GC220707X22
37 Piston (pad pilot valve) GC053202X02
38* Diaphragm (pad and depad pilot valves)
Nitrile (NBR) GC071101X02
Ethylenepropylene (EPDM - FDA) GC071101X22
Fluorocarbon (FKM) GC071101X12
Peruoroelastomer (FFKM) GC071101X32
39* O-ring
Nitrile (NBR) 1D2888X0032
Ethylenepropylene (EPDM - FDA) 1D2888X0042
Fluorocarbon (FKM) 1D2888X0052
Peruoroelastomer (FFKM) 1D2888X0022
40 Upper Cage
(NPS 1 and 2 / DN 25 and 50 pad valves) GC053001X02
41* O-ring
Nitrile (NBR) 10A0042X052
Ethylenepropylene (EPDM - FDA) 10A0042X072
Fluorocarbon (FKM) 10A0042X012
Peruoroelastomer (FFKM) 10A0042X062
42 Poppet (pad pilot valve) GC053201X02
46 Seal Bushing (4 required)
NPS 1 / DN 25 pad valve GC071202X32
49 Spring Guide (pad valve)
25 to 50 psig / 51 to 120 psig
/ 1,7 to 3,4 bar / 3,5 to 8,3 bar GC050505X22
50 Hex-Head Cap Screw (4 required) GC060224X12
51 Lock Washer (4 required) GC060905X02
52 Cage (NPS 1/2 / DN 15 pad valve) GC053003X02
75 Stem
1 NPT depad main valve GC050616X02
2 NPT depad main valve GC050616X12
NPS 3 / DN 80 depad main valve GC050616X22
NPS 4 / DN 100 depad main valve GC050616X32
76* O-ring
1 NPT depad main valve
Nitrile (NBR) GC072006X02
Fluorocarbon (FKM) GC072006X12
Ethylenepropylene (EPDM - FDA) GC072006X52
Peruoroelastomer (FFKM) GC072006X62
2 NPT depad main valve
Nitrile (NBR) 16A1178X042
Fluorocarbon (FKM) 16A1178X022
Ethylenepropylene (EPDM - FDA) 16A1178X062
Peruoroelastomer (FFKM) 16A1178X052
NPS 3 / DN 80 depad main valve
Nitrile (NBR) 17B1364X042
*Recommended Spare Part
76* O-ring (continued)
NPS 3 / DN 80 depad main valve
Fluorocarbon (FKM) 17B1364X052
Ethylenepropylene (EPDM - FDA) 17B1364X062
Peruoroelastomer (FFKM) 17B1364X072
NPS 4 / DN 100 depad main valve
Nitrile (NBR) GC072010X02
Fluorocarbon (FKM) GC072010X12
Ethylenepropylene (EPDM - FDA) GC072010X52
Peruoroelastomer (FFKM) GC072010X62
77 Cage (depad main valve)
Cv 3 GC053253X12
Cv 6 GC053253X32
Cv 12 GC053253X52
Cv 17 GC053253X72
Cv 20 GC053257X52
Cv 35 GC053257XB2
Cv 70 GC053257XF2
Cv 90 GC053265X12
Cv 115 GC053265X32
Cv 140 GC053265X72
Cv 150 GC053248X32
Cv 200 GC053248X52
Cv 280 GC053248X92
78 Hex-Head Machine Screw
1 NPT depad main valve GC060229X02
2 NPT, NPS 3 and 4 / DN 80 and 100
depad main valve GC060226X02
79 Lock Washer
1 NPT depad main valve (1 required) GC060905X02
2 NPT depad main valve (1 required) GC060907X02
NPS 3 and 4 / DN 80 and 100
depad main valve (2 required) GC060907X02
80 Seal Retainer (4 required)
1 NPT depad main valve GC053315X02
2 NPT depad main valve GC053310X02
NPS 3 / DN 80 depad main valve GC053318X02
NPS 4 / DN 100 depad main valve GC053337X02
81* Stem Seal (4 required)
1 NPT depad main valve GC071203X12
2 NPT depad main valve GC071203X02
NPS 3 / DN 80 depad main valve GC071203X22
NPS 4 / DN 100 depad main valve GC071203X32
82* O-ring (2 required)
1 NPT depad main valve
Nitrile (NBR) 12B3522X042
Fluorocarbon (FKM) 12B3522X022
Ethylenepropylene (EPDM - FDA) 12B3522X102
Peruoroelastomer (FFKM) 12B3522X092
2 NPT depad main valve
Nitrile (NBR) 1H8762X0012
Fluorocarbon (FKM) 1H8762X0052
Ethylenepropylene (EPDM - FDA) 1H8762X0072
Peruoroelastomer (FFKM) 1H8762X0062
NPS 3 / DN 80 depad main valve
Nitrile (NBR) 1H7422X0022
Fluorocarbon (FKM) 1H7422X0052
Ethylenepropylene (EPDM - FDA) 1H7422X0042
Peruoroelastomer (FFKM) 1H7422X0032
NPS 4 / DN 100 depad main valve
Nitrile (NBR) 1D267306992
Fluorocarbon (FKM) 1D2673X0012
Ethylenepropylene (EPDM - FDA) 1D2673X0072
Peruoroelastomer (FFKM) 1D2673X0062
Key Description Part NUmber Key Description Part NUmber
Type ACE97
20
83 Seal Retaining Plate
1 NPT depad main valve GC053314X02
2 NPT depad main valve GC053311X02
NPS 3 / DN 80 depad main valve GC053317X02
NPS 4 / DN 100 depad main valve GC053327X02
84 Spring (depad main valve)
Cv 3 through 17 GC220723X22
Cv 20 through 70 GC220722X72
Cv 90 through 140 GC220724X22
Cv 150 through 280 GC220729X22
85 Spring Guide (depad main valve)
Cv 3 through 17 GC050511X02
Cv 20 through 70 GC050510X02
Cv 90 through 140 GC050512X02
Cv 150 through 280 GC053329X02
86 Retaining Ring
1 and 2 NPT depad main valves GC061104X12
87 Bonnet
1 NPT depad main valve GC052919X02
2 NPT depad main valve GC052923X52
NPS 3 / DN 80 depad main valve GC052921X52
NPS 4 / DN 100 depad main valve GC052929X52
88* O-ring (1 NPT depad main valve)
Nitrile (NBR) 1F115306992
Fluorocarbon (FKM) 1F1153X0022
Ethylenepropylene (EPDM - FDA) 1F1153X0062
Peruoroelastomer (FFKM) 1F1153X0032
89 Retaining Ring
1 NPT depad main valve GC061104X32
90 Cap (1 NPT depad main valve) GC053313X02
91 Body (depad main valve)
1 NPT depad main valve GC052709X02
2 NPT depad main valve GC052718X52
93 Hex-Head Machine Screw (24 required) GC060220X02
94 Stem (actuator) GC053303X02
95 Actuator Spring
Pad 0.5 to 3-inches w.c. / 1 to 7 mbar
Depad 4 to 10-inches w.c. / 10 to 25 mbar GC220730X72
Pad 0.5 to 7-inches w.c. / 1 to 17 mbar
Depad 4 to 6-inches w.c. / 10 to 15 mbar GC220718X72
Pad 3 to 13-inches w.c. / 7 to 32 mbar
Depad 4 to 16-inches w.c. / 10 to 40 mbar GC220719X72
Pad 4 to 10-inches w.c. / 10 to 25 mbar
Depad 16 to 78-inches w.c. / 40 to 194 mbar GC220720X72
Pad 0.5 to 1.4 psig / 34 to 97 mbar
Depad 0.25 to 1 psig / 17 to 69 mbar GC220721X72
Pad 1.0 to 2.2 psig / 69 to 152 mbar
Depad 0.25 to 2 psig / 17 to 138 mbar GC220725X72
96 Spring (one of two springs used for this range,
See Figure 12)
Pad 4 to 10-inches w.c. / 10 to 25 mbar
Depad 16 to 78-inches w.c. / 40 to 194 mbar GC220719X72
97 Upper Spring Guide (actuator)
Pad 3 to 13-inches w.c. / 7 to 32 mbar
Depad 4 to 16-inches w.c. / 10 to 40 mbar GC050509X02
Pad 4 to 10-inches w.c. / 10 to 25 mbar
Depad 16 to 78-inches w.c. / 40 to 194 mbar GC050509X02
Pad 0.5 to 1.4 psig / 34 to 97 mbar
Depad 0.25 to 1 psig / 17 to 69 mbar GC050509X02
97 Upper Spring Guide (actuator) (continued)
Pad 1.0 to 2.2 psig / 69 to 152 mbar
Depad 0.25 to 2.0 psig / 17 to 138 mbar GC050513X02
98 Spacer
Pad 4 to 10-inches w.c. / 10 to 25 mbar
Depad 16 to 78-inches w.c. / 40 to 194 mbar GC053309X02
Pad 0.5 to 1.4 psig / 34 to 97 mbar
Depad 0.25 to 1 psig / 17 to 69 mbar GC053308X02
Pad 1.0 to 2.2 psig / 69 to 152 mbar
Depad 0.25 to 2 psig / 17 to 138 mbar GC053308X02
99 Locknut (depad pilot valve) GC053305X02
100 Spring Adjuster (depad pilot valve) GC053302X02
101 Return Spring (depad pilot valve) GC220715X22
102 Gasket (upper cage, depad pilot valve) GC070435X02
103 Follower GC053224X02
104 O-ring (2 required, depad pilot valve)
Nitrile (NBR) 1F1139G0012
Fluorocarbon (FKM) 1N463906382
Peruoroelastomer (FFKM) 1F1139X0042
Ethylenepropylene (EPDM - FDA) 1F1139X0052
105 Poppet (depad pilot valve) GC053223X02
106 Upper Cage (depad pilot valve) GC053004X02
107 Coupling GC053304X92
108 Center Cage (depad pilot valve) GC053005X02
109 Rain Cap GC053801X42
110 Lower Cage (depad pilot valve) GC053006X02
111 Fixed Orice
Cv 3 through 12 19B6407X012
Cv 17 through 70 19B6406X012
Cv 90 through 140 19B6406X012
Cv 150 through 280 19B6407X012
112 Spring Seat
Pad 4 to 10-inches w.c. / 10 to 25 mbar
Depad 16 to 78-inches w.c. / 40 to 194 mbar GC050507X02
113 Lower Actuator Case, Stainless Steel GC260111X02
114 Upper Actuator Case, Stainless Steel GC260112X02
116 Lower Diaphragm Plate GC260104X02
117 Diaphragm Bolt GC053229X02
118* O-ring
Nitrile (NBR) GC070173X02
Ethylenepropylene (EPDM - FDA) GC070173X52
Fluorocarbon (FKM) GC070173X12
Peruoroelastomer (FFKM) GC070173X62
119 Upper Diaphragm Plate GC260108X02
120 Spring Case GC053103X02
121 Gasket (spring case) GC070434X02
126 Hex-Head Tap Bolt
Cv 90 through 140 GC060216X22
Cv 150 through 280 GC060232X02
127 Seal Retainer (depad pilot valve) GC053222X02
129 Connector (external, 3/8-inch / 9,5 mm tube
x 1/4 NPT, NPS 1 and 2 / DN 25 and 50
pad valves only) - - - - - - - - - - -
*Recommended Spare Part
Key Description Part NUmber Key Description Part NUmber
Type ACE97
21
131 Tube Elbow (2 required) (external, 1/4-inch
/ 6,4 mm tube x 1/8 NPT) - - - - - - - - - - -
132 Tube Elbow (3 required) (external, 1/4-inch
/ 6,4 mm tube x 1/4 NPT) - - - - - - - - - - -
133 Type 252 Pilot Filter (NPS 1 and 2 / DN 25 and 50
pad pilot valve) 17B6809X042
134 Pressure Gauge (depad main valve) GC160122X02
135 Tubing Insert (6 required) - - - - - - - - - - -
138 Plug (pipe, hex, 1 NPT) 1A7947X0022
139 Hex-Head Pipe Plug (2 required), 1/4 NPT 1A767535072
140 Regulator (pilot supply) GC017001X02
141 Tee Street (for NPS 1/2 / DN 15 Pad Valve) - - - - - - - - - - -
142 Tee Street (2 required) (for NPS 1
and 2 / DN 25 and 50 Pad Valves) - - - - - - - - - - -
143 Tubing (6-foot length / 1,8 m,
1-inch / 25 mm diameter, PTFE) - - - - - - - - - - -
145 Pipe Street Elbow (1-inch / 25 mm) - - - - - - - - - - -
146 Flange (Depad Body x Tank Connection)
1 NPT x NPS 1 / DN 25 CL150 RF 1H9368X0032
1 NPT x NPS 2 / DN 50 CL150 RF GC031202X02
2 NPT x NPS 2 / DN 50 CL150 RF 11A4038X022
2 NPT x NPS 3 / DN 80 threaded ange GC031204X02
1 NPT x NPS 1 / DN 25 sanitary ange GC052514X52
148 Pipe Nipple (1-inch / 25 mm),
SCH80 x 5-inches / 127 mm GC023217X02
149 Close Nipple
1 NPT Depad valve (1 required) GC020285X02
2 NPT Depad valve (2 required) GC023053X02
150 Pipe Tee
1 NPT Depad valve GC020299X02
2 NPT Depad valve GC023062X02
151 Bushing (2 x 1 NPT) 13A8621X022
152 S.A.M. (Single Array Manifold)
(Depad Body x Tank Connection)
1 NPT x NPS 1-1/2 / DN 40 CL150 GC230201X42
1 NPT x NPS 2 / DN 50 CL150 GC230201X12
1 NPT x NPS 2 / DN 50 sanitary ange GC230509X52
1 NPT x NPS 3 / DN 80 CL150 GC230206X52
2 NPT x NPS 3 / DN 80 CL150 GC230213X52
153 Pipe Nipple
(1-inch, / 25 mm SCH80 x 2.75-inches / 70 mm,
1 NPT depad valve and
NPS 1/2 / DN 15 pad/2 NPT depad valve only) GC023226X02
157 Body/Piping Weld (Pad Body x Depad Body x
Tank Connection x Vent Connection)
NPS 1 / DN 25 x NPS 3 / DN 80
x 3-inch / 76 mm x 3-inch / 76 mm GC973300X52
NPS 1 / DN 25 x NPS 4 / DN 100
x 4-inch / 102 mm x 4-inch / 102 mm GC973301X52
NPS 2 / DN 50 x NPS 3 / DN 80
x 3-inch / 76 mm x 3-inch / 76 mm GC973303X12
NPS 2 / DN 50 x NPS 4 / DN 100
x 4-inch / 102 mm x 4-inch / 102 mm GC973302X52
160 Hex-Head Machine Screw
2 NPT and NPS 3 / DN 80
depad main valve (4 required) GC060214X02
NPS 4 / DN 100 depad main valve
(6 required) GC060214X02
161 Lock Washer
2 NPT and NPS 3 / DN 80
depad main valve (4 required) GC060908X02
NPS 4 / DN 100 depad main valve
(6 required) GC060908X02
163 Actuator Diaphragm
Nitrile (NBR) GC071102X02
Fluorocarbon (FKM) GC071102X12
Ethylenepropylene (EPDM-FDA) GC071102X22
164 Caution Tag (depad adjustment) GC090807X02
165 Nipple (NPS 1/2 x 3 / DN 15 x 80,
NPS 1/2 / DN 15 pad valve) GC023154X02
166 Housing Inlet Filter (NPS 1/2 / DN 15 pad valve) GC040711X02
167 Filter Element (NPS 1/2 / DN 15 pad valve) GC200211X02
Key Description Part NUmber Key Description Part NUmber
Type ACE97
22
Figure 11. Type ACE97 Pad-Depad Valve Exterior
E0630
NPS 1 / DN 25 PAD /
1 NPT DEPAD
131
111
131
131
143
134
157
134
142
132
131
111
131
138
129
133
149
150
153
146
148
138
129
133
SEE INSET
SEE INSET
NPS 1 / DN 25 PAD /
NPS 4 / DN 100 DEPAD
TYPICAL DEPAD PILOT
SUPPLY REGULATOR (KEY 140)
132
142
160
159
161
131
Type ACE97
23
E0677
Figure 12. Actuator Spring Ranges
PAD 0.5 TO 1.4 PSIG / 34 to 97 mbar
DEPAD 0.25 TO 1 PSIG / 17 to 69 mbar
PAD 1.0 TO 2.2 PSIG / 69 to 152 mbar
DEPAD 0.25 TO 2 PSIG / 17 to 138 mbar
PAD 0.5 TO 3-INCHES W.C. / 1 to 7 mbar
DEPAD 4 TO 10-INCHES W.C. / 10 to 25 mbar
PAD 0.5 TO 7-INCHES W.C. / 1 to 17 mbar
DEPAD 4 TO 6-INCHES W.C. / 10 to 15 mbar
PAD 3 TO 13-INCHES W.C. / 7 to 32 mbar
DEPAD 4 TO 16-INCHES W.C. / 10 to 40 mbar
95 97
95
95
112
97
96
PAD 4 TO 10-INCHES W.C. / 10 to 25 mbar
DEPAD 16 TO 78-INCHES W.C. / 40 to 194 mbar
98
97
95
98 98
97
95
Type ACE97
24
Figure 13. Type ACE97 NPS 1/2 / DN 15 Pad Valve
E0631
E0634
38
52
37
36
39
41
42
145
148
18
27 113
29 28
16
165166
Type ACE97
25
Figure 14. Type ACE97 NPS 1 / DN 25 Pad Valve
GROOVE FOR ROLLING
DIAPHRAGM BEAD
E0635
37
36
38
39
40
41
42
35
138
18
34
113
E0632
27
16
17
26
25
19
24
21
22
23
20
28
46
29
Type ACE97
26
Figure 15. Type ACE97 NPS 2 / DN 50 Pad Valve
GROOVE FOR ROLLING
DIAPHRAGM BEAD 37
38
39
40
41
42
36
35
113
28
29
16
27
26
49
25
24
23
22
21
20
E0633
19 18
51 52
E0635
Type ACE97
27
Figure 16. 1 NPT Depad Main Valve
E0636
80
76
79
78
81
83
91
87
84
86
134
77
82
85
88
75
90
89
143 135 131
Type ACE97
28
Figure 17. 2 NPT Depad Main Valve
E0705
86
84
83
80
87
134
81
76
79
78
77
91
160
161
85
82
75
143
135
131
Type ACE97
29
Figure 18. NPS 3 and 4 / DN 80 and 100 Depad Main Valve
E0674
87
75
83
80
134
81
76
79
78
77
157
85
84
79
126
143
135
131
160
161
82
Type ACE97
30
Figure 19. Depad Pilot Valve Parts
E0675
111
ACTUATOR
109
104
110
31
135
100
127
131
143
108
103
102
101
106
131
120
103
107
98
99
135
131
105
104
38
143
135
143
Type ACE97
31
Figure 20. Actuator Parts
113
28
31
93
114
93
120
99
98
28
29
117118
27
116
94
95
119
163
121
28
100
E0676
Type ACE97
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