Emerson 627W, 627WH Instruction Manual

Instruction Manual
Form 5447

March 2009

Types 627W and 627WH

Types 627W and 627WH Direct-Operated
Pressure Reducing Liquid Regulators

WARNING

!

Fisher® regulators must be installed,
operated, and maintained in accordance
with federal, state, and local codes,
rules and regulations, and
manufacturer’s instructions.

Installation, operation, and maintenance

procedures performed by unqualied

personnel may result in improper
adjustment and unsafe operation.
Either condition may result in
equipment damage or personal

injury. Use qualied personnel when

installing, operating, and maintaining
the Types 627W and 627WH regulators.

Introduction

Scope of the Manual

This Instruction Manual provides installation, startup,
adjustment, maintenance, and parts ordering
information for the Types 627W and 627WH pressure
reducing regulators for liquid service. Only personnel

qualied through training or experience should install,

operate, and maintain these regulators. If there are
any questions concerning these instructions, contact

your local Sales Ofce before proceeding.

Description

The Types 627W and 627WH (Figure 1) are direct­operated pressure reducing regulators for liquid
service. On the internal registration version,
downstream pressure is registered internally through

the body to the underside of the diaphragm.

Types 627W and 627WH direct-operated regulators

are also available in a downstream control line version
for external pressure registration. The control line
version has a blocked throat with an O-ring stem

W4793

Figure 1. Types 627W and 627WH

Pressure Reducing Liquid Regulator

seal and a 1/4 NPT control line connection in the

diaphragm case. The stem seal separates the body

outlet pressure from the diaphragm case.

Specications

Refer to Specications lists for Types 627W and 627WH
constructions on page 2. Specications for a given

regulator as it originally comes from the factory are
stamped on the spring case nameplate.

www.emersonprocess.com/regulators

D102504X012

Types 627W and 627WH

Specications

Available Construction

Type 627W: Direct-operated pressure reducing
liquid regulator (Figure 2)

Type 627WH: Type 627W with a diaphragm
limiter to deliver a higher outlet pressure
(Figure 2)

Control Line Option: Type 627W or 627WH

with a stem seal between the body outlet pressure

and diaphragm case. Pressure is measured under
the diaphragm through the 1/4 NPT
downstream control line connection (Figure 2)

Body Sizes and End Connection Styles

NPT: NPS 3/4, 1, or 2
CL150, CL300, CL600 RF Flanged:
NPS 1 or 2 (DN 25 or 50)
PN 16/25/40: NPS 1 or 2 (DN 25 or 50)

Maximum Spring and Diaphragm Casing Pressure

(1)

See Table 1

Body Pressure Shell Rating

(1)

NPT (Steel): 2000 psig (138 bar)

NPT (Ductile Iron): 1000 psig (68,9 bar)
CL600 RF Flanged (Steel): 1500 psig (103 bar)

Orice Sizes

Standard: 1/4 or 1/2-inch (6,4 or 13 mm)
Optional: 3/32,1/8, 3/16, or 3/8-inch
(2,4; 3,2; 4,8; or 9,5 mm)

See Table 8

Temperature Capabilities

See Table 4

Pressure Registration

Standard: Internal
Optional: External through 1/4 NPT control
line connection in the diaphragm case

Spring Case Vent Connection
3/4 NPT with removable screened

vent assembly

Elastomer Temperature Ranges

See Table 4

(1)

Control Line Connection
1/4 NPT downstream control

line connection

Wide-Open Cv and IEC Sizing Coefcients
See Table 5

Maximum Operating Inlet and Outlet
Pressure Ranges

(1)

Approximate Weight
10 pounds (5 kg)

See Table 2 for pressures by orice and spring range

Option

Outlet Pressure Ranges

Type 627W: 10 to 150 psig (0,69 to 10,3 bar)
Type 627WH: 140 to 500 psig (9,7 to 34,5 bar)

See Table 2 for pressures by orice and spring range

Outlet Pressure Gauge (Brass):

0 to 30 psi (0 to 2,1 bar)
0 to 60 psi (0 to 4,1 bar)
0 to 160 psi (0 to 11,0 bar)
0 to 300 psi (0 to 20,7 bar)
0 to 600 psi (0 to 41,4 bar)

1. The pressure/temperature limits in this Instruction Manual or any applicable standard limitation should not be exceeded.

Table 1. Maximum Spring and Diaphragm Casing Pressure

MAXIMUM PRESSURE DESCRIPTION DIAPHRAGM CASING MATERIAL

Maximum pressure to spring and diaphragm casings to prevent

leak to atmosphere (internal parts damage may occur)

Maximum pressure to spring and diaphragm casings to prevent
burst of casings during abnormal operation (leak to atmosphere

and internal parts damage may occur)

Maximum diaphragm casing overpressure (above setpoint) to

prevent damage to internal parts

1. If the spring case is pressurized, a metal adjusting screw cap is required. Contact your local Sales Ofce for details.

Ductile iron 250 17,2 - - - - - - - -

Steel or Stainless steel 250 17,2 800 55,2

Ductile iron 465 32,1 - - - - - - - -

Steel or Stainless steel 1500 103 1500 103

All materials 60 4,1 120 8,3

(1)

TYPE 627W TYPE 627WH

Psig bar Psig bar

2

SCREENED
VENT
ASSEMBLY

ADJUSTING
SCREW CAP

ADJUSTING
SCREW

SPRING CASE

Types 627W and 627WH

DIAPHRAGM

PUSHER
POST

W6306-1

SCREENED
VENT
ASSEMBLY

CONTROL SPRING

INTERNAL
REGISTRATION

DETAIL OF TYPE 627W WITH INTERNAL

DOWNSTREAM PRESSURE REGISTRATION

ADJUSTING
SCREW CAP

ADJUSTING
SCREW

SPRING CASE

CONTROL SPRING

DISK ASSEMBLY

W6483-2

1/4 NPT
CONTROL LINE CONNECTION

DETAIL OF TYPE 627W WITH EXTERNAL

DOWNSTREAM PRESSURE REGISTRATION

1/4 NPT
CONTROL LINE CONNECTION

DIAPHRAGM
LIMITER
O-RING

DIAPHRAGM
LIMITER

DIAPHRAGM

PUSHER
POST

W6305-1

DIAPHRAGM
HEAD

INTERNAL
REGISTRATION

DISK ASSEMBLY

DETAIL OF TYPE 627WH WITH INTERNAL

DOWNSTREAM PRESSURE REGISTRATION

Figure 2. Types 627W and 627WH Construction Details

W5482-1

DETAIL OF TYPE 627WH WITH EXTERNAL DOWNSTREAM PRESSURE

REGISTRATION AND CONNECTION FOR OUTLET PRESSURE GAUGE

3

M1037

Type 627W

Type 627W

July 2008

Type 627W

INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE

Types 627W and 627WH

INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE

M1037

Principle of Operation

The Type 627W or 627WH (refer to Figure 2) is a
direct-operated regulator. On the internal registration
version, downstream pressure is registered internally

through the body to the under side of the diaphragm.
When the downstream pressure is at or above the
set pressure, the disk is held against the seat, and
there is no ow through the regulator. When demand

increases, downstream pressure drops slightly allowing

the spring to extend, moving the stem down and the
disk away from the seat. This allows ow through the
body to the downstream system.

Types 627W and 627WH direct-operated regulators

are also available in a downstream control line version.
This version has a stem seal between the body outlet

pressure and diaphragm case. Pressure is registered
under the diaphragm through the 1/4 NPT downstream
control line connection (Figure 2).

Installation

Personal injury, equipment damage,
or leakage due to escaping liquid
or bursting of pressure-containing
parts may result if this regulator is
overpressured or installed where service

Figure 3. Type 627W Operational Schematic (Also Typical of Type 627WH)

connection could exceed the limits given
in Tables 1, 2, and 4 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 to prevent service conditions
from exceeding those limits.

!

WARNING

Additionally, the control line could be
broken off the regulator by physical
damage, causing personal injury and
property damage due to escaping liquid.
To avoid such injury and damage, install
the regulators and control line where
they are protected from physical damage.

Liquid pressure control systems should
be designed using engineering practices
to eliminate quick control starting or

stopping of the ow stream, which can

produce water hammer.

Regulator operation within ratings does not preclude

the possibility of damage from debris in the lines or
from external sources. A regulator should be inspected

for damage periodically and after any overpressure

condition. Key numbers referenced in this section are

CAUTION

4

Types 627W and 627WH

TYPE 627W SET HIGHER THAN
WORKING REGULATOR

INLET

A6623

OUTLET PRESSURE

RANGE, SPRING PART

TYPE

NUMBER, AND COLOR,

PSIG (bar)

10 to 20 (0,69 to 1,4)

10B3076X012

Yellow

15 to 40 (1,0 to 2,8)

10B3077X012

627W

627WH

Green

35 to 80 (2,4 to 5,5)

10B3078X012

Blue

70 to 150 (4,8 to 10,3)

10B3079X012

Red

140 to 250 (9,7 to 17,2)

10B3078X012

Blue

240 to 500 (16,5 to 34,5)

10B3079X012

Red

MONITOR

TYPE 627W

WORKING REGULATOR

TYPE 627W

CONTROL LINE

Figure 4. Monitor Regulator Schematic

Table 2. Maximum Inlet Pressure, Differential Pressure, and Outlet Pressure Ranges

ORIFICE SIZE,

INCHES (mm)

1/4 (6,4) 220 (15,2) 420 (29,0) 200 (13,8) 400 (27,6)

1/2 (13) 220 (15,2) 250 (17,2) 200 (13,8) 250 (17,2)

1/4 (6,4) 240 (16,5) 440 (30,3) 200 (13,8) 400 (27,6)

1/2 (13) 240 (16,5) 300 (20,7) 200 (13,8) 300 (20,7)

1/4 (6,4) 280 (19,3) 480 (33,1) 200 (13,8) 400 (27,6)

1/2 (13) 280 (19,3) 480 (33,1) 200 (13,8) 400 (27,6)

1/4 (6,4) 350 (24,1) 550 (37,9) 200 (13,8) 400 (27,6)

1/2 (13) 350 (24,1) 550 (37,9) 200 (13,8) 400 (27,6)

1/4 (6,4) 450 (31,0) 650 (44,8) 200 (13,8) 400 (27,6)

1/2 (13) 450 (31,0) 500 (34,5) 200 (13,8) 250 (17,2)

1/4 (6,4) 700 (48,3) 900 (62,1) 200 (13,8) 400 (27,6)

1/2 (13) 700 (48,3) 750 (51,7) 200 (13,8) 250 (17,2)

MAXIMUM INLET PRESSURE, PSIG (bar) MAXIMUM DIFFERENTIAL PRESSURE, PSID (bar d)

Elastomer Disk Nylon Disk Elastomer Disk Nylon Disk

shown in Figures 5 and 6. Ensure that the operating

elastomer temperature ranges listed in Table 4 are
not exceeded. Like most regulators, Types 627W and

627WH regulators have outlet pressure ratings that
are lower than their inlet pressure ratings.

1. Only personnel qualied through training and
experience should install, operate, or maintain

this regulator.

2. For a regulator that is shipped separately, make

sure that there is no damage to, or foreign
material in, the regulator.

3. Ensure that all tubing and piping have been blown
free of foreign debris.

4. The regulator may be installed in any position as
long as the ow through the body is in the
direction indicated by the arrow cast on the body.

5. If continuous operation is required during
inspection or maintenance, install a three-valve

bypass around the regulator.

!

WARNING

The vent line or stack opening must be
protected against condensation
or clogging.

6. Position the body (key 1) and/or diaphragm
spring case (key 29) so it will not collect moisture
or debris in the screened vent. If the regulator

requires repositioning, refer to the Body Area
Maintenance Procedures and/or the diaphragm
case area maintenance procedures in the
Maintenance section to reposition the screened
vent for the application.

5

Types 627W and 627WH

Table 3. Outlet Pressure Ranges

TYPE

627W

627WH

SPRING RANGE

Psig bar

10 to 20 0,69 to 1,4 Yellow 10B3076X012 3.19 (81,0) 0.170 (4,32)

15 to 40 1,0 to 2,8 Green 10B3077X012 3.19 (81,0) 0.207 (5,26)

35 to 80 2,4 to 5,5 Blue 10B3078X012 3.20 (81,3) 0.262 (6,66)

70 to 150 4,8 to 10,3 Red 10B3079X012 3.07 (78,0) 0.313 (7,95)

140 to 250 9,7 to 17,2 Blue 10B3078X012 3.20 (81,3) 0.262 (6,66)

240 to 500 16,5 to 34,5 Red 10B3079X012 3.07 (78,0) 0.313 (7,95)

COLOR SPRING PART NUMBER

Table 4. Elastomer Temperature Ranges

MATERIAL DISK/DIAPHRAGM

Nitrile (NBR)

Fluorocarbon (FKM)

Ethylenepropylene (EPDM)

Peruoroelastomer (FFKM) Disk 0 to 400 -18 to 204 Corrosive

Nylon (PA) Disk -40 to 200 -40 to 93 General

Polytetrauoroethylene (PTFE) Diaphragm Protector -40 to 400 -40 to 204 Corrosive

1. Stainless steel body is rated to -40°F (-40°C). Steel and ductile iron bodies are rated to -20°F (-29°C).

Disk

Diaphragm

Disk

Diaphragm

Disk

Diaphragm

TEMPERATURE RANGE

(1)

°F

-40 to 180 -40 to 82 General

0 to 300 -18 to 149

-40 to 275 -40 to 135

SPRING FREE LENGTH,

INCHES (mm)

(1)

°C

SPRING WIRE DIAMETER,

Not Recommended for Hot

Not Recommended for

Hydrocarbon Service

INCHES (mm)

USAGE

Water Service

Table 5. Flow and Sizing Coefcients

ORIFICE SIZE, INCHES (mm)

BODY SIZES,

NPS (DN)

3/4 1.63 4.87

1 (25) 1.70 5.29 0.543 0.815

2 (50) 1.66 5.01 0.620 1.01

Startup

To avoid personal injury or property
damage during startup, release
downstream pressure to prevent
an overpressure condition on the
diaphragm of the regulator. In order to
avoid an overpressure condition and
possible equipment damage, pressure
gauges should always be used to
monitor pressure during startup.

Wide-Open CV for Relief Sizing K

1/4 (6,4) 1/2 (13) 1/4 (6,4) 1/2 (13)

WARNING

!

m

0.76 0.74

Adjustment

The range of allowable pressure settings is marked on
the nameplate. If a pressure setting beyond this range
is necessary, substitute the appropriate regulator

control spring. Change the nameplate to indicate the
new pressure range.

Before increasing the setting, refer to Tables 1 and 2.

Review the pressure limits for the control spring range

being used and be certain that the new pressure setting

will not result in an overpressure condition.

Note

1. Slowly open the upstream shutoff valve.

2. Slowly open the downstream shutoff valve.

3. Check all connections for leaks.

4. Make nal control spring adjustments according to

the adjustment procedures.

IEC Sizing Coefcients

X

1/4 (6,4) 1/2 (13) 1/4 (6,4) 1/2 (13) 1/4 (6,4) 1/2 (13)

T

0.592 0.962

F

D

0.50 0.50 0.87 0.86

F

L

Always use a pressure gauge to monitor
pressure when making adjustments.

6

KEY NUMBER

1. Refer to Figures 5 and 6 for key numbers.

(1)

2 Orice 25 34

3 Cap Screw (with ductile iron or steel diaphragm casing) 25 34

18 Lever, Cap Screw 7 9

37

46

Spring Case Cap Screw (with ductile iron diaphragm casing) 7 9

Types 627W and 627WH

Table 6. Maximum Torque Values

DESCRIPTION FOOT POUNDS NEWTON METERS

Spring Case Cap Screw (with steel diaphragm casing) 35 47

Diaphragm Cap Screw (Type 627W) 7 9

Diaphragm Cap Screw (Type 627WH) 14 19

Refer to Figures 5 and 6 for key number location.

1. Remove the adjusting screw cap (key 36).

2. Loosen the locknut (key 34).

3. Increase the outlet pressure setting by turning
the adjusting screw (key 35) clockwise.
Decrease the outlet pressure settings by turning
the adjusting screw counterclockwise.

Shutdown

WARNING

!

To avoid personal injury or property
damage or damage to regulator or
downstream components during
shutdown, release downstream pressure
to prevent an overpressure condition on
the diaphragm of the regulator.

1. Close the nearest upstream shutoff valve.

2. Close the nearest downstream shutoff valve.

3. Open the vent between the regulator and the

downstream shutoff valve nearest to it.

Maintenance

Unless otherwise specied the following maintenance

procedures apply to all Types 627W and 627WH

regulators. For a summary of maximum torque values,
refer to Table 6.

Due to normal wear, damage from external sources,
or debris in the line, regulator parts such as the
valve plug assembly, orice, and diaphragm must be

inspected periodically and replaced as necessary to
ensure correct performance.

The frequency of inspection and replacement depends
upon the severity of conditions and the requirements
of state and federal laws and regulations. Normal

wear of the orice and disk assembly is accelerated

with high pressure drops and with large amounts of

impurities in the ow stream. Instructions are given
below for replacing the valve plug assembly, orice,

diaphragm, and O-rings. These procedures may also

be used for disassembly required for inspection and

replacement of other parts.

Body Area Maintenance Procedures

These procedures are for gaining access to the

valve plug assembly, orice, lower casing O-ring and
stem assembly. All pressure must be released from
the diaphragm casing before the following steps can
be performed.

While using the following procedures, refer to Figures 5

and 6 for key number location.

Replacing the Valve Plug Assembly or Orice

1. To inspect and replace the valve plug assembly
(key 9) or orice (key 2), remove the cap screws
(key 3, not shown), and separate the lower
diaphragm casing (key 5) from the body (key 1).

2. Inspect and, if necessary, remove the orice
(key 2). If removed, coat the threads of the
replacement orice with lubricant (key 38) and
tighten to 25 foot-pounds (34 N•m).

3. Inspect the valve plug assembly (key 9) and, if
necessary, remove the hair pin clip (key 13) that
holds the valve plug assembly in place. If
replacing the valve plug assembly is the only
maintenance required, skip to step 10.

Replacing the Stem Assembly

If it is necessary to perform maintenance on the stem

assembly, continue with steps 4 through 13.

4. Remove the stem guide (key 8) from the lower
diaphragm casing (key 5). Unhook from the lever
(key 15) and remove the stem (key 10) from the
lower diaphragm casing (key 5).

7

Types 627W and 627WH

5. Remove and inspect the stem O-ring (key 11)

and replace if necessary. Also inspect and if

necessary replace the O-ring (key 44) and
backup springs.

6. Remove and inspect the stem backup rings
(key 12) and replace if necessary.

7. Apply lubricant to the stem O-ring (key 11).

8. For assembly, insert the stem (key 10) into the
lower diaphragm casing (key 5) and hook it on the
lever (key 15).

9. Insert parts into the lower diaphragm casing

(key 5) that were removed in steps 4 through 6.

10. Install the valve plug assembly (key 9), line up
the hole in the valve plug assembly and stem
(key 10) and insert the hair pin clip (key 13).

11. Position the diaphragm casing plus attached

parts in relation to the body (key 1) so that they

are correct for the application.

12. Secure the lower diaphragm casing to the body
with the cap screw (key 3). For ductile iron or

steel diaphragm casings, tighten the cap screws

(key 3) to 25 foot-pounds (34 N•m).

13. It may be necessary to reposition the diaphragm

spring case to prevent rain, ice, and foreign

debris from entering the spring case. Refer to

the Diaphragm and Spring Case Area
Maintenance Procedures.

Diaphragm and Spring Case Area
Maintenance Procedures

3. Remove the diaphragm limiter (key 50) and
O-ring (key 51) on the Type 627WH only. Remove
the diaphragm assembly by tilting it so that the
pusher post assembly (key 19) slips off the lever
(key 15).

4. If it is necessary to replace the lever assembly
(key 15), remove the lever cap screws (key 18).

5. Install the replacement lever (key 15) into the lever
retainer (key 16) by inserting the lever pin
(key 17). Secure the lever assembly (key 15)
into the lower diaphragm casing (key 5) with the
cap screws (key 18) and tighten the cap screw to
7 foot-pounds (9 N•m).

If it is necessary to perform maintenance on the

diaphragm assembly continue with steps 6 through 10
and step 17, otherwise skip to step 11.

6. Remove cap screw (key 46), lower spring seat
(key 31 for Type 627W only, Figure 5) and
diaphragm head (key 24). On the Type 627WH
remove O-ring (key 52, Figure 6). Separate the
diaphragm (key 23) from the pusher post (key 19).

7. Install the diaphragm (key 23), in reverse order of
step 6. On the pusher post (key 19), insert and
nger tighten the cap screw (key 46).

8. Hook the pusher post (key 19) on the lever
(key 15), then turn the diaphragm (key 23) to

match the holes in the diaphragm with the holes in

the lower diaphragm casing (key 5).

9. Unhook the pusher post (key 19) from the lever
(key 15) and tighten the cap screw (key 46) to
7 foot-pounds (9 N•m).

These procedures are for gaining access to the control

spring, diaphragm assembly, and lever assembly. All
spring pressure must be released from the diaphragm
casing before these steps can be performed.

While using the following procedures, refer to Figures 5

and 6 for key number locations.

1. Remove the adjusting screw cap (key 36), loosen
the lock nut (key 34), and turn the adjusting screw
(key 35) counterclockwise until all compression is
removed from the control spring (key 32).

2. Remove the cap screws (key 37), and lift off
the spring case (key 29). If changing the spring
(key 32) or repositioning the spring case is the

only maintenance required, install the replacement

spring (key 32) or rotate the spring case so it
is correct for the application. Skip to step 13. For

diaphragm area maintenance, continue with step 3.

8

10. Hook the pusher post (key 19) on the lever
(key 15) and check the hole alignment. If
necessary, loosen the cap screw (key 46) and
reposition the diaphragm (key 23) on the pusher
post (key 19). Tighten the cap screw to 7 foot­ pounds (9 N•m).

11. Insert the diaphragm assembly into the lower
diaphragm casing (key 5).

12. Install the spring (key 32) and upper spring seat
(key 33), and apply lubricant to the upper

spring seat.

13. Install the spring case (key 29) so that the vent
(key 30) is in the correct position for the
application. Insert the cap screws (key 37) and
nger tighten.

14. Screw in the adjustment screw (key 35) to put
slack into the diaphragm (key 23).

Types 627W and 627WH

Table 7. Body (Key 1)

END CONNECTION STYLE BODY MATERIAL NPS 3/4 NPS 1 (DN 25) NPS 2 (DN 50)

Ductile Iron (Type 627W only) 30B3046X012 30B3048X012 30B3096X012

NPT

Cl150 RF

CL300 RF

CL600 RF

PN 16/25/40

ORIFICE DIAMETER PART NUMBER

Inches mm 303 Stainless Steel 316 Stainless Steel

3/32 2,4 0R044135032 0R0441X0012

1/8 3,2 1A936735032 1A9367X0022

3/16 4,8 00991235032 009912X0012

1/4 6,4 0B042035032 0B0420X0012
3/8 9,5 0B042235032 0B0422X0012
1/2 13 1A928835032 1A9288X0012

WCC Steel 30B3050X012 30B3051X012 30B7452X012

CF8M Stainless Steel 30B3050X062 30B3051X092 30B7452X052

WCC Steel - - - - 43B8656X022 44B0666X012

CF8M Stainless Steel - - - - 43B8656X052 44B0666X022

WCC Steel - - - - 41B8978X012 41B8080X012

CF8M Stainless Steel - - - - 41B8978X072 41B8080X072

WCC Steel - - - - 40B6754X012 40B6756X012

CF8M Stainless Steel - - - - 40B6754X102 40B6756X062

WCC Steel - - - - 44B0386X012 44B3342X012

CF8M Stainless Steel - - - - 44B0386X032 44B3342X032

Table 8. Orice (Key 2)

15. Using a crisscross pattern, tighten the cap screw

(key 37) to 7 foot-pounds (9 N•m).

16. If necessary, refer to the installation and/or the
startup and adjustment procedures.

17. Install the adjusting screw cap (key 36) after

regulator adjustment.

Parts Ordering

When corresponding with your local Sales Ofce about

this equipment, always reference the information found
on the regulator nameplate.

When ordering replacement parts, reference the

complete 11-character part number of each needed

part as found in the following parts list.

Parts List

Key Description Part Number

1 Body (See Table 7)

2* Orice (See Table 8)

3 Cap Screw (2 required, Not shown)
Ductile iron or steel
spring case and diaphragm casing
(plated steel cap screw) 1A560724052
Stainless steel spring case and
diaphragm casing (SST cap screw) 1A5607X0052

5 Lower Diaphragm Casing

Type 627W
Ductile iron 30B3053X012
WCC Steel 30B3104X012
CF8M Stainless steel 30B3104X082

Key Description Part Number

5 Lower Diaphragm Casing (continued)

Type 627W with control line or 1/4 NPT Tap
Ductile iron 39A5987X012
WCC Steel 30B8734X012
CF8M Stainless steel 30B8734X032
Type 627WH
WCC Steel 30B3104X012
CF8M Stainless steel 30B3104X082
Type 627WH with control line or 1/4 NPT Tap
WCC Steel 30B8734X012
CF8M Stainless steel 30B8734X032

8 Stem Guide, 316 Stainless steel
Standard 14B7259X012
With control line 10B3085X012

9* Valve Plug Assembly
Stainless steel/Nitrile (NBR) 1C4248X0202
Stainless steel/Nylon (PA) 1C4248X0062
Stainless steel/Fluorocarbon (FKM) 1C4248X0052
Stainless steel/Ethylenepropylene (EPDM) 1C4248X0302

Stainless steel/Peruoroelastomer (FFKM) 1C4248X0392

10 Stem, 416 Stainless steel 10B3059X012

11* Stem O-Ring (material same as diaphragm)
Nitrile (NBR) 1D687506992
Fluorocarbon (FKM) 1N430406382
Ethylenepropylene (EPDM) 1D6875X0032
Peruoroelastomer (FFKM)
(with Diaphragm Protector) 1D6875X0082

12* Stem Backup Ring,
Polytetrauoroethylene (PTFE) (2 required) 1K786806992

13 Hair Pin Clip, Stainless steel 10B3058X012

14 Drive Pin, Stainless steel 1H3671X0012

15 Lever, 304 Stainless steel 20B3063X022

16 Lever Retainer, Stainless steel 34B6659X012

17 Lever Pin, Stainless steel 10B3083X022

18 Cap Screw, 18-8 Stainless steel (2 required) 1B2905X0012

19 Pusher Post Assembly, Stainless steel 10B3098X032

*Recommended spare part

9

Types 627W and 627WH

36

33

30

31

24

37

23

46

19

15

14 17 16 11 12 10 13

9

2

1

8

45

44

5

18

35 34 32 29

34B7395

APPLY LUBRICANT
PARTS NOT SHOWN: 3

Figure 5. Type 627W Regulator Assembly

Key Description Part Number

23* Diaphragm
Type 627W with Ductile iron spring case and
diaphragm casing
Nitrile (NBR) 10B3069X012
Fluorocarbon (FKM) 10B3069X032
Ethylenepropylene (EPDM) 10B3069X042
Type 627W with WCC steel
or CF8M Stainless steel spring case and
diaphragm casing
Nitrile (NBR) 12B0178X012
Fluorocarbon (FKM) 12B0178X022
Ethylenepropylene (EPDM) 12B0178X042

*Recommended spare part

10

Key Description Part Number

23* Diaphragm (continued)
Type 627WH use with WCC steel
or CF8M Stainless steel spring case and
diaphragm casing
Nitrile (NBR) 12B0178X012

Fluorocarbon (FKM) (2 required) 12B0178X022

Ethylenepropylene (EPDM) (2 required) 12B0178X042

24 Diaphragm Head
Type 627W, Zinc-plated steel 14B5728X012
Type 627WH, Stainless steel 12B0175X012

Types 627W and 627WH

36

33

30

24

37

23

46

19

15

14 17 16 11 12 10 13

9

2

1

8

45

44

5

50

18

51

5229323435

37B9752

APPLY LUBRICANT
PARTS NOT SHOWN: 3

Figure 6. Type 627WH Regulator Assembly

Key Description Part Number

29 Spring Case
Ductile iron (Type 627W only) 30B3055X012
WCC Steel 30B3102X012
CF8M Stainless steel 30B3102X092

30 Vent Assembly 10B3093X012

31 Lower Spring Seat, Zinc-plated steel

Type 627W only T1142524152

*Recommended spare part

Key Description Part Number

32 Spring, Plated steel
Type 627W

10 to 20 psig (0,7 to 1,4 bar), Yellow 10B3076X012
15 to 40 psig (1,0 to 2,8 bar), Green 10B3077X012
35 to 80 psig (2,4 to 5,5 bar), Blue 10B3078X012
70 to 150 psig (4,8 to 10,3 bar), Red 10B3079X012

Type 627WH

140 to 250 psig (9,65 to 17,2 bar), Blue 10B3078X012
240 to 500 psig (16,5 to 34,5 bar), Red 10B3079X012

11

Types 627W and 627WH

Key Description Part Number

33 Upper Spring Seat, Zinc-plated steel 1D667125072

34 Locknut, Zinc-plated steel 1D667728982

35 Adjusting Screw, Plated steel 10B3081X012

36 Adjusting Screw Cap, Plastic 20B3082X012

37 Cap Screw, Plated steel (8 required)
Type 627W
Ductile iron casings 1A391724052
WCC Steel casings 1A368324052
CF8M Stainless steel casings (SST cap screw) 1A6751X0092
Type 627WH
WCC Steel casings 1A346424052
CF8M Stainless steel casings (SST cap screw) 1A3464X0022

44* O-Ring, Material same as diaphragm (2 required)
Nitrile (NBR) 1E264306992

Fluorocarbon (FKM) 1E2643X0022

Ethylenepropylene (EPDM) 1E2643X0032

Peruoroelastomer (FFKM)

(with Diaphragm protector) 1E2643X0042

45* Backup Ring,

PTFE (2 required) 10B3106X012

46 Cap Screw, Zinc-plated steel
Type 627W 1A381624052
Type 627WH 1C379124052

50 Diaphragm Limiter, Zinc-plated steel

Type 627WH only 22B0176X012

Key Description Part Number

51* O-Ring
Type 627WH only
Nitrile (NBR) 1K877606992

Fluorocarbon (FKM) 1K8776X0062

Ethylenepropylene (EPDM) 1K8776X0032
Peruoroelastomer (FFKM)
(with Diaphragm protector) 1K8776X0072

52* O-Ring (material same as diaphragm)
Type 627W (1 required, not shown)
Nitrile (NBR) 1C853806992

Fluorocarbon (FKM) 1C8538X0052

Ethylenepropylene (EPDM) 1C8538X0072

Peruorelastomer (FFKM)

(with Diaphragm protector) 1C8538X0072
Type 627WH (2 required)
Nitrile (NBR) 1C853806992

Fluorocarbon (FKM) 1C8538X0052

Ethylenepropylene (EPDM) 1C8538X0072

Peruoroelastomer (FFKM) 1C8538X0072

67 Drive Screw (2 required, Not shown) 1A368228982

68* Diaphragm Protector (Not shown)
Ductile iron casing 14B3636X012
Steel or stainless steel 14B4324X012

72 Pipe Plug for 1/4 NPT Tap (Not shown)
Zinc-plated steel 1A767524662
Stainless steel 1A767535072

*Recommended spare part

Industrial Regulators

Emerson Process Management
Regulator Technologies, Inc.

USA - Headquarters

McKinney, Texas 75069-1872 USA

Tel: [phone]
Outside U.S. 1-972-548-3574

Asia-Pacic

Shanghai, China 201206
Tel: [phone]

Europe
Bologna, Italy 40013
Tel: [phone]

Middle East and Africa

Dubai, United Arab Emirates

Natural Gas Technologies

Emerson Process Management
Regulator Technologies, Inc.

USA - Headquarters

McKinney, Texas 75069-1872 USA

Tel: [phone]
Outside U.S. 1-972-548-3574

Asia-Pacic

Singapore, Singapore 128461
Tel: [phone]

Europe
Bologna, Italy 40013
Tel: [phone]
Gallardon, France 28320
Tel: [phone]

TESCOM

Emerson Process Management
Tescom Corporation

USA - Headquarters

Elk River, Minnesota 55330-2445 USA

Tel: [phone]

Europe
Selmsdorf, Germany 23923
Tel: [phone]

Tel: [phone]

For further information visit www.emersonprocess.com/regulators

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business of Emerson Process Management.

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