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:
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.
