Emerson FISHER 627W User manual

Types 627W and 627WH
Installation Guide
D102504X014
English - March 2009
Introduction
This installation guide provides instructions for
installation, startup and adjustment. To receive a
copy of the instruction manual, contact your local
Sales Office or view a copy at www.fisher.com. For
further information refer to: Types 672W and 627WH
Instruction Manual, D102504X012.
PED Category
This product may be used as a safety accessory
with pressure equipment in the following Pressure
Equipment Directive categories. It may also be used
outside of the Pressure Equipment Directive using
sound engineering practice (SEP) per table below.
For information on the current PED revision see
Bulletin: D103053X012.
PRODUCT SIZE CATEGORIES
DN 20 and 25 / NPS 3/4 and 1 SEP
DN 50 / NPS 2 II
Specifications
Available Constructions
Type 627W: Direct operated pressure reducing
liquid regulator.
Type 627WH: Type 627W with a diaphragm limiter
to deliver a higher outlet pressure.
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.
Body Sizes and End Connection Styles
NPT: DN 20, 25 or 50 / NPS 3/4, 1 or 2
CL150, CL300, CL600 RF Flanged:
DN 25 or 50 / NPS 1 or 2
PN 16/25/40: DN 25 or 50 / NPS 1 or 2
Maximum Spring and Diaphragm
Casing Pressure(1)
See Table 1
Body Pressure Shell Rating(1)
NPT (Steel): 138 bar / 2000 psig
NPT (Ductile Iron): 68.9 bar / 1000 psig
CL600 RF Flanged (Steel): 103 bar / 1500 psig
Maximum Operating Inlet and Outlet
Pressure Ranges(1)
See Table 2 for pressures by orifice and spring range
Outlet Pressure Ranges
See Table 2
Orifice Diameters
Standard: 6.4 or 13 mm / 1/4 or 1/2 in.
Optional: 2.4, 3.2, 4.8 or 9.5 mm /
3/32, 1/8, 3/16 or 3/8 in.
Proof Test Pressure
All Pressure Retaining Components have been
proof-tested per Directive.
Temperature Capabilities(1)(2)
Nitrile (NBR): -40 to 82°C / -40 to 180°F
Fluorocarbon (FKM): -18 to 149°C / 0 to 300°F
Ethylenepropylene (EPDM): -40 to 135°C /
-40 to 275°F
Perfluoroelastomer (FFKM): -18 to 204°C /
0 to 400°F
Nylon (PA): -40 to 93°C / -40 to 200°F
Polytetrafluoroethylene (PTFE): -40 to 204°C /
-40 to 400°F
Installation
!
WARNING
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
Emerson Process Management Regulator
Technologies, Inc. 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.
1. The pressure/temperature limits in this installation guide and any applicable standard or code limitation should not be exceeded.
2. Stainless steel body is rated to -40°C / -40°F. Steel and ductile iron bodies are rated to -29°C / -20°F.

Types 627W and 627WH
2
To avoid such injury or damage, provide
pressurerelieving 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 external 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.
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 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)
!
WARNING
To avoid personal injury resulting from
sudden release of pressure, isolate
the regulator from all pressure before
attempting disassembly.
Key Description
1 Body
2* Orifice
3 Cap Screw (not shown)
5 Lower Diaphragm Casing
8 Stem Guide
9* Valve Plug 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 Cap Screw
19 Pusher Post Assembly
23* Diaphragm
29 Spring Case
30 Vent Assembly
24 Diaphragm Head
Key Description
31 Lower Spring Seat
(Type 627W only)
32 Spring
33 Upper Spring Seat
34 Locknut
35 Adjusting Screw
36 Adjusting Screw Cap
37 Cap Screw
44* O-ring
45* Backup Ring
46 Cap Screw
50 Diaphragm Limiter
(Type 627WH only)
51* O-ring (Type 627WH only)
52* O-ring
67 Drive Screw (not shown)
68* Diaphragm Protector
(not shown)
72 Pipe Plug for 1/4 NPT Tap
(not shown)
Parts List
* Recommended spare part

Types 627W and 627WH
3
Table 1. Maximum Spring and Diaphragm Casing Pressure(1)
MAXIMUM PRESSURE DESCRIPTION DIAPHRAGM
CASING STYLE
TYPE 627W TYPE 627WH
bar psig bar psig
Maximum pressure to spring and diaphragm casings to prevent leak to atmosphere
(internal parts damage may occur)
Ductile iron 17.2 250 - - - -
Steel or Stainless steel 17.2 250 55.2 800
Maximum pressure to spring and diaphragm casings to prevent burst of casings during
abnormal operation (leak to atmosphere and internal parts damage may occur)
Ductile iron 32.1 465 - - - -
Steel or Stainless steel 103 1500 103 1500
Maximum diaphragm casing overpressure (above setpoint) to prevent damage to internal parts. All materials 4.1 60 8.3 120
1. If the spring case is pressurized, a metal adjusting screw cap is required. Contact your Local Sales Ofce for details.
Figure 1. Type 627W Regulator Assembly
34B7395
APPLY LUBRICANT APPLY LUBRICANT
Table 2. Maximum Inlet Pressure, Dierential Pressure and Outlet Pressure Ranges
TYPE OUTLET PRESSURE
RANGE AND COLOR, bar / psig
ORIFICE SIZE MAXIMUM INLET PRESSURE MAXIMUM DIFFERENTIAL PRESSURE
Elastomer Disk Nylon Disk Elastomer Disk Nylon Disk
mm In. bar psig bar psig bar psig bar psig
627W
0.69 to 1.4 / 10 to 20,
Yellow
6.4 1/4 15.2 220 29.0 420 13.8 200 27.6 400
13 1/2 15.2 220 17.2 250 13.8 200 17.2 250
1.0 to 2.8 / 15 to 40,
Green
6.4 1/4 16.5 240 30.3 440 13.8 200 27.6 400
13 1/2 16.5 240 20.7 300 13.8 200 20.7 300
2.4 to 5.5 / 35 to 80,
Blue
6.4 1/4 19.3 280 33.1 480 13.8 200 27.6 400
13 1/2 19.3 280 33.1 480 13.8 200 27.6 400
4.8 to 10.3 / 70 to 150,
Red
6.4 1/4 24.1 350 37.9 550 13.8 200 27.6 400
13 1/2 24.1 350 37.9 550 13.8 200 27.6 400
627WH
9.7 to 17.2 / 140 to 250,
Blue
6.4 1/4 31.0 450 44.8 650 13.8 200 27.6 400
13 1/2 31.0 450 34.5 500 13.8 200 17.2 250
16.5 to 34.5 / 240 to 500,
Red
6.4 1/4 48.3 700 62.1 900 13.8 200 27.6 400
13 1/2 48.3 700 51.7 750 13.8 200 17.2 250
Figure 2. Type 627WH Regulator Assembly
37B9752
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 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

Types 627W and 627WH
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Emerson Automation Solutions
For further information on the current
PED revision see Bulletin: D103053X012
or scan the QR code.
Fisher.com
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McKinney, Texas 75070 USA
T [phone]
[phone]
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Bologna 40013, Italy
T [phone]
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T [phone]
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Dubai, United Arab Emirates
T [phone]
D102504X014 © 2002, 2018 Emerson Process Management Regulator
Technologies, Inc. All rights reserved. 07/18.
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