Emerson Type 627F Pressure Reducing Regulator Installation Guide 627F_IG_pr.p65

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Type 627F

D101545XENG

Installation Guide

English – May 2002

www.FISHERregulators.com

Introduction

This installation guide provides instructions for installation,

startup, and adjustment. To receive a copy of the instruction

manual, contact your local Fisher Sales

Office or Sales Representative or view a copy at

www.FISHERregulators.com. For further information refer to:

Type 627F Instruction Manual, form 5282, D101545X012.

P.E.D. Categories

This product may be used as a safety accessory with

pressure equipment in the following Pressure Equipment

Directive 97/23/EC categories. It may also be used out-

side of the Pressure Equipment Directive using sound

engineering practice (SEP) per table below.

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Specifications

Body Sizes(1)

DN 20, 25, or 50 (3/4, 1, or 2-inch)

End Connection Styles(1)

DN 20 (3/4-inch): NPT

DN 25 or 50 (1 or 2-inch): NPT; ANSI Class 300RF

or 600RF flanged

Maximum Inlet and Differential Pressures(1)

See table 1

Minimum Differential Pressures(1)

Low Differential Actuator Spring

0,34 to 2,4 bar (5 to 35 psig):

0,69 bar (10 psi)

2,4 to 6,9 bar (35 to 100 psig):

1,4 bar (20 psi)

High Differential Actuator Spring

0,34 to 2,4 bar (5 to 35 psig):

1,4 bar (20 psi)

2,4 to 6,9 bar (35 to 100 psig):

1,4 bar (20 psi)

Maximum Emergency Outlet Pressure(1)

17,2 bar (250 psig)

Outlet Pressure Ranges

0,34 to 2,4 bar (5 to 35 psig)

2,4 to 6,9 bar (35 to 100 psig)

Proof Test Pressure

All Pressure Retaining Components have been

proof tested per Directive 97/23/EC - Annex 1,

Section 7.4

Temperature Capabilities

-29 to 82°C (-20 to 180°F)

Installation

Only qualified personnel should install or service

a regulator. Regulators should be installed,

operated, and maintained in accordance with

international and applicable codes and

regulations, and Fisher instructions.

If the regulator vents fluid or a leak develops in

the system, it indicates that service is required.

Failure to take the regulator out of service

immediately may create a hazardous condition.

Personal injury, equipment damage, or leakage due

to escaping fluid or bursting of pressure-containing

parts may result if this regulator is overpressured

or is installed where service conditions could

exceed the limits given in the Specifications section,

or where conditions exceed any ratings of the

adjacent piping or piping connections.

To avoid such injury or damage, provide pressure-

relieving or pressure-limiting devices (as required

by the appropriate code, regulation, or standard) to

prevent service conditions from exceeding limits.

Additionally, physical damage to the regulator could

result in personal injury and property damage due

to escaping fluid. To avoid such injury and damage,

install the regulator in a safe location.

Clean out all pipelines before installation of the regulator

and check to be sure the regulator has not been damaged

or has collected foreign material during shipping. For NPT

bodies, apply pipe compound to the male pipe threads. For

flanged bodies, use suitable line gaskets and approved

piping and bolting practices. Install the regulator in any

position desired, unless otherwise specified, but be sure

flow through the body is in the direction indicated by the

arrow on the body.

Note

It is important that the regulator be installed so that

the vent hole in the spring case is unobstructed at all

times. For outdoor installations, the regulator should

be located away from vehicular traffic and positioned

so that water, ice, and other foreign materials cannot

enter the spring case through the vent. Avoid placing

the regulator beneath eaves or downspouts, and be

sure it is above the probable snow level.

1. The pressure/temperature limits in this installation guide and any applicable

standard or code limitation should not be exceeded.

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Table 1. Maximum Inlet and Differential Pressures

Type 627F

2

32B3310-D

Overpressure Protection

The recommended pressure limitations are stamped on

the regulator nameplate. Some type of overpressure

protection is needed if the actual inlet pressure exceeds the

maximum operating outlet pressure rating. Overpressure

protection should also be provided if the regulator inlet

pressure is greater than the safe working pressure of the

downstream equipment.

Regulator operation below the maximum pressure limitations

does not preclude the possibility of damage from external

sources or debris in the line. The regulator should be inspected

for damage after any overpressure condition.

Startup

The regulator is factory set at approximately the midpoint

of the spring range or the pressure requested, so an initial

adjustment may be required to give the desired results.

With proper installation completed and relief valves

Figure 1. Type 627F Assembly

Type 627F Parts List

Key Description

1 Body

2 Orifice

3 Cap Screw

4 Diaphragm Case O-Ring

5 Diaphragm Case

6 Boost Body

7 O-Ring

8 Stem Guide

9 Disk Assembly

10 Stem

11 Stem O-Ring

12 Stem Backup Ring

13 Hair Pin Clip

14 Drive Pin

15 Lever

16 Lever Retainer

17 Lever Pin

18 Lever Cap Screw

19 Pusher Post

23 Diaphragm

24 Diaphragm Head

29 Spring Case

31 Lower Spring Seat

32 Tension Spring

34 Locknut

36 Closing Cap

37 Spring Case Cap Screw

39 Nameplate

53 Spring Retainer

54 Diaphragm Connection

55 Gasket

56 Reducing Nipple

58 Pipe Plug

59 Elbow

60 Pilot Supply Tubing

61 Spring Seat Bolt

62 Washer

63 Closing Cap Gasket

properly adjusted, slowly open the upstream and

downstream shutoff valves.

Adjustment

To change the outlet pressure, remove the closing cap or

loosen the locknut and turn the adjusting screw clockwise

to increase outlet pressure or counterclockwise to decrease

pressure. Monitor the outlet pressure with a test gauge

during the adjustment. Replace the closing cap or tighten

the locknut to maintain the desired setting.

Taking Out of Service (Shutdown)

To avoid personal injury resulting from sudden

release of pressure, isolate the regulator from all

pressure before attempting disassembly.

Type 627F

3

A7008

32B3797-D

Figure 2. Type 6351F Assembly

Type 6351F Parts List

Key Description

1 Body Assembly

2 Spring Case

3 Body Plug

4 Inner Valve Assembly

6 Valve Spring

7 Diaphragm Assembly

8 Upper Spring Seat

9 Control Spring

10 Adjusting Screw

11 Locknut

22 Pipe Nipple

23 Body Plug Gasket

24 P590 Filter (Optional)

28 Closing Cap

35 Vent Assembly

44 Restriction

Figure 3. Standard P590 Series Filter Assembly

P590 Series Parts List

Key Description

1 Filter Body

2 Filter Element

3 Filter Head

4 Machine Screw

5 Washer

6 Spring Washer

7 Gasket

Type 627F

For information, contact Fisher Controls, International:

Within USA (800) 588-5853 – Outside USA (972) 542-0132

Italy – (39) 051-4190-606

Singapore – (65) 770-8320

Mexico – (52) 57-28-0888

©Fisher Controls International, Inc., 2002; All Rights Reserved

Fisher and Fisher Regulators are marks owned by Fisher Controls International, Inc. The Emerson logo is a trade mark and service mark of Emerson Electric Co.

All other marks are the property of their respective owners.

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees, express

or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs or specifications of such products at any time without notice.

Printed in U.S.A. www.FISHERregulators.com