CAMERON T31Max Brochure
User Manual: Resource Library
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CAMERON T31MAX
High-efficiency Fully Welded Ball Valve
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Forged body and ball provides superior
ductility and strength for added safety
Compact body design
gives increased strength
with reduced weight Floating seat ring with seat
to ball seal; various seat
arrangements are available
(see pages 4 and 6)
Trunnions encased in PTFE impregnated
stainless steel bearings for smooth
operation without lubrication
Body bleed fitting allows double block-and-bleed testing of valve seats in either
open or closed position
Sealant port with check valve permits
safe injection of sealant for fast, simple
restoration of tight shutoff
Stem sealant
injection
PTFE delta seal
PTFE lip seal
As one of the most trusted valves in the petroleum industry, the CAMERON T31MAX provides the strength of
forged components with a lightweight and compact spherical design. Combined with Cameron’s MAXTORQUE™
high-efficiency gear operator, the package gives new meaning to the words “user friendly.”
CAMERON fully welded ball valves satisfy ASME/ANSI 150 through 2500 (PN 20 through PN 420) and API 2000 through
10,000 standards. Made of forged steel to ensure uniform fine grain structure and toughness, they can be specified in
sizes from 2” to 56” (50 mm to 1400 mm).
MAXTORQUE high-performance gears
CAMERON T31MAX High-efficiency Fully Welded Ball Valve
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Single start
SINGLE ENVELOPING
WORM GEAR
Standard gears
Maximum Tooth Contact of 2.96
MAX Series Drive Train Features
• 70% base efficiency
• Double O-ring sealing system
• 6 to 12+ teeth in contact versus
1.5 to 2.5
• Rugged ductile iron housings (carbon
steel utilized above 100,000 ft-lb)
• Bronze gears
Multistart
DOUBLE ENVELOPING
WORM GEAR
MAXTORQUE
Tooth Contact of 6.6 to 10.7
MAXTORQUE HIGH-PERFORMANCE GEARS
MAX Series Benefits
• Reduced work to close by up to 75%
- Reduced turns and/or input force required to operate
- Increased speed to close by up to 75% with the same input
• Reduced need for actuators
• Near-zero backlash for improved process control
• Smaller EMOs reduce cost of actuation packages
• Smaller actuation packages reduce weight and
piping loads
Project Scope MAXTORQUE Solution Direct Gas Estimated Gas-Over-Oil Estimated
Qty. Valve Size Class Gear Cost Each Total Gear
Cost Each Total Each Total
9 30” 600# $5200 $46,800 $11,000 $99,000 $15,000 $135,000
4 30” 600# $5200 $20,800 $11,000 $44,000 $15,000 $60,000
12 30” 600# $5200 $62,400 $11,000 $132,000 $15,000 $180,000
12 30” 600# $5200 $62,400 $11,000 $132,000 $15,000 $180,000
4 36” 600# $7800 $31,200 $14,000 $56,000 $17,000 $68,000
4 36” 600# $7800 $31,200 $14,000 $56,000 $17,000 $68,000
Total: 45 $254,800 $519,000 $691,000
Estimated Savings $264,200 $436,200
TYPICAL PROJECT SAVINGS
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WORK REDUCTION
Sealing System Prevents Particulate and Water Ingress
Quality Manufacturing
• Rigorous PC/PLC cycle testing
and qualification
• Direct-mount capability
reduces cost and chance
of stem misalignment/valve
failure
• Designed to handle torques
in excess of 1,000,000 ft-lb
• Made in Maine, USA
Double sealing at top
Primary: At indicator
Secondary: Top of hub
Input seals
Work Reduction*
Size Class Rated Torque
(in-lb)
MAX Series Break
Rim Pull (lb)
Break Rim Pull
Conventional
Technology
MAX Series Turns
to Close
Turns to Close
Conventional
Technology
Turn Reduction
24” 600 144,520 76 64 39 190 151
30” 600 261,740 77 59 78 297 219
36” 600 383,040 75 61 118 297 179
* Assumes API standards on rim pull and handwheel diameter.
Reduction Rim Pull and Turns*
Size Class Rated Torque
(in-lb)
MAX Series Break
Rim Pull (lb)
Break Rim Pull
Conventional
Technology
MAX Series Turns
to Close
Turns to Close
Conventional
Technology
Turn Reduction
24” 600 144,520 39 64 84 190 106
30” 600 261,740 40 59 151 297 146
36” 600 383,040 40 61 217 297 80
* Assumes API standards on handwheel diameter.
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In service since the early 1960s, the standard seat
arrangement has proven to be of sound design.
This arrangement is available in all CAMERON fully
welded ball valves and includes all features and
benefits indicated on the preceding pages.
Features and Benefits
Upstream Sealing
At low pressure, seat-to-ball contact is maintained by
Belleville springs. At higher pressures, seat contact is
reinforced by line pressure.
Automatic Internal Relief of Body Pressure
Relief of excess body cavity pressure is automatic,
avoiding dangerous pressure buildup. Any pressure
exceeding downstream line pressure by approximately
200 psi pushes the downstream seat away from the ball,
allowing the pressure to relieve into the pipeline.
Rotating Seat Rings
The exclusive rotating seat feature is standard in the
CAMERON fully welded ball valve sizes 14” (350 mm)
and larger. Both seats rotate 15 degrees each time the
valve is closed, exposing a new pinch point and evenly
distributing seat wear.
Distributed Seat Wear
The pinch point is the area of the seat insert that
experiences an increased velocity when the valve is
seated closed and unseated open. This is where the
seat seal experiences the most wear, and in most
valves, where a leak path begins. By rotating the seat
ring, the pinch point wear is distributed throughout
the seat seal, providing an increase in seat life.
Prevents Buildup
In some services, a valve can experience harmful sediment
buildup around the seat ring. This can cause the seat to
stick and not seal properly. The CAMERON fully welded
ball valves, with exclusive rotating seat, can handle these
harsher services. As the seat rotates, it will prevent any
buildup, or breaks up existing buildup.
LINE
PRESSURE
TRAPPED
LINE
PRESSURE
ESCAPING
PRESSURE
STANDARD SEAT DESIGN
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VALVE
OPEN
VALVE
CLOSED
FEATURES AND BENEFITS
Stem Seals
Delta seals and lip seals made of PTFE are incorporated
in the upper stem area. PTFE is a low-friction,
non-deteriorating material that is not subjected
to rapid decompression explosion. Most valve sizes
have a provision for sealant injection to establish a
secondary seal.
Trunnion-supported Ball Allows
Low-torque Operation
Regardless of size or pressure rating, every CAMERON
fully welded ball valve is trunnion mounted. High-strength
forged stems are located in PTFE impregnated stainless
steels bearings for smooth operation. Trunnion mounted
stems absorb the thrust from line pressure, preventing
excess friction between the ball and seats, so even at full
rated working pressure, operating torque stays low.
Double Block-and-bleed
Whether in the fully open or fully closed position,
pressure on each side of the ball is blocked from the
body cavity by the seat ring. The body cavity can then
be bled down or drained through the body port.
When you block-and-bleed a CAMERON fully welded
ball valve, the following can be accomplished:
Test Valve Integrity
When the valve body is vented, the seat seal’s
integrity is verified. This test can be performed
with the valve open or closed prior to facility
maintenance. By verifying valve integrity,
unforeseen valve leakage can be prevented.
Secondary Seat Seal
The sealant injection system provides a fast, simple way
of restoring tight shutoff if any foreign object should
damage the sealing surfaces. The injection system also
can be used for routine flushing of the seat ring area
in services where this may be required.
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ALTERNATE SEAT DESIGN
Double Acting – T32
SIZES
• 8” to 48” (200 mm to 1200 mm)
PRESSURE CLASSES
• ASME/ANSI Class 150 to 900 (PN 20 to PN 150)
OPERATING TEMPERATURES
• -50° F to 250° F (-46° C to 121° C)
Standards and Specifications
The valve is available with double-acting and
metal-to-metal seats to accommodate a variety
of applications and customer preferences.
Double Acting
Conventional Upstream Sealing
With upstream pressure, the bi-directional
body-to-seat seal is pushed toward the front sealing
face of its retaining pocket. This creates an unbalanced
pressure annulus between the body seal and the ID of
the seat insert, forcing the seat insert against the ball.
Downstream Sealing
With downstream pressure, the bi-directional body-to-seat
seal is pushed toward the back sealing face of its retaining
pocket. This creates an unbalanced pressure annulus
between the OD of the seat insert and the body seal
diameter, also forcing the seat insert against the ball.
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In-line Replaceable Stem Seals
In the unlikely event of a stem seal needing replacement,
this can be accomplished safely with the valve in service.
With the body cavity vented, all line pressure to the
stem area also is vented. (Please contact your sales
representative to obtain maintenance procedures.)
Safeguard Downstream Work
With the valve closed and the vent fitting open, the
possibility of the line media reaching a work area is
removed.
Fire-tested for Safety
CAMERON fully welded ball valves can be supplied to
API 6FA, API 607 and ISO 10497 standards. Fire-test
programs are ongoing. If industry standards change or
customer requirements vary from above, please contact
your sales representative.
HSE
CAMERON fully welded ball valves reduce the work
required to operate the valves by up to 75% fewer
turns. Less rim pull means less opportunity for injury.
Standards and Specifications
Sizes
• 2” to 56” (50 mm to 1400 mm) as full bore,
reduced bore and Venturi bore
Pressure Classes
• ASME/ANSI Class 150 to 2500
(PN 20 to PN 420), API 2000 to 10,000 psi
Operating Temperatures
• From -50° F to 375° F (-46° C to 190° C)
End Connections
• Flanged, weld and weld-by-flange, etc.
Body Styles
• Fully welded
Standard Material
• Forged carbon steel
Optional Materials
• Seat/seal trim options include:
regular, corrosion-resistant and sour
(NACE MR0175)
ADDITIONAL FEATURES AND BENEFITS
The CAMERON T31MAX valve series offers the established features and benefits of the T31 valve with the addition of
leading-edge Drive Train technology. The MAX valve series offers a product that adds power steering to one of the
leading valves in the market.
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CAMSERV™ Services for Valves and Actuation
Global Network and Local Support
Cameron is well-positioned to deliver total aftermarket
support, quickly and efficiently, with unmatched OEM
expertise. Our highly skilled engineers and technicians are
available around the clock, seven days a week to respond
to customer queries, troubleshoot problems and offer
reliable solutions.
Easily Accessible Parts and Spare Valves
• OEM spare valves, actuators and parts (including
non-Cameron brands)
• Handling, storage, packaging and delivery
• Dedicated stocking program
Comprehensive Aftermarket Services Portfolio
• Parts and spare valves
• Repair
• Field services
• Preventative maintenance
• Equipment testing and diagnostics
• Remanufacturing
• Asset preservation
• Customer property management
• Training and recertification services
• Warranty
Customized Total Valve CareSM (TVC) Programs
Customized asset management plans that optimize
uptime, availability and dedicated services.
• Engineering consultancy
• Site management
• Flange management
• Startup and commissioning
• Spare parts and asset management
• Operational support
WE BUILD IT. WE BACK IT.
USA • CANADA • LATIN AMERICA • EUROPE • RUSSIA • AFRICA • MIDDLE EAST • ASIA PACIFIC
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Trademark Information
CAMERON is a registered trademark of Cameron. CAMSERV is a trademark of Cameron.
This document contains references to registered trademarks or product designations,
which are not owned by Cameron.
TRADEMARK OWNER
Celcon Hoechst Celanese Corporation
Delrin E.I. DuPont De Nemours & Company
Fluorel Minnesota Mining and Manufacturing Company
Hastelloy Haynes International, Inc.
Hycar Hydrocarbon Chemical and Rubber Company
Hydrin Zeon Chemicals USA, Inc.
Hypalon E.I. DuPont De Nemours & Company
Inconel INCO Nickel Sales, Inc.
Monel INCO Alloys International, Inc.
Nordel E.I. DuPont De Nemours & Company
Stellite Stoody Deloro Stellite, Inc.
Teflon E.I. DuPont De Nemours & Company
Viton E.I. DuPont De Nemours & Company
HSE Policy Statement
At Cameron, we are committed ethically, financially and personally to a
working environment where no one gets hurt and nothing gets harmed.
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3250 Briarpark Drive, Suite 300
Houston, TX 77042
USA
Toll Free 1.800.323.9160
Learn more about CAMERON T31MAX at:
www.c-a-m.com/valves
© 2012 Cameron | CAMERON is a registered trademark of Cameron. CAMSERV is a trademark of Cameron. | AD00519V
