Table of Contents
Advertisement
Quick Links
Instruction Manual
Form 5282
April 2012
Type 627F Pilot-Operated
Pressure Reducing Regulator
W5607
WARNING
!
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion
and/or fire causing property damage and
personal injury or death.
Fisher
regulators must be installed,
®
operated, and maintained in
accordance with federal, state, and
local codes, rules and regulations,
and Emerson Process Management
Regulator Technologies, Inc. (Regulator
Technologies) instructions.
Figure 1. Type 627F Pilot-Operated Pressure Reducing Regulators
www.fisherregulators.com
W5641
If the regulator vents gas or a leak
develops in the system, service to the
unit may be required. Failure to
correct trouble could result in a
hazardous condition.
Call a gas service person to service
the unit. Only a qualified person must
install or service the regulator.
Introduction
Scope of the Manual
This manual provides instructions for installation,
adjustment, maintenance, and parts ordering
information for the Type 627F regulator.
Type 627F
Advertisement
Table of Contents
Related Manuals for Fisher 627F
Summary of Contents for Fisher 627F
- Page 1 April 2012 Type 627F Pilot-Operated Pressure Reducing Regulator W5607 W5641 Figure 1. Type 627F Pilot-Operated Pressure Reducing Regulators If the regulator vents gas or a leak WARNING develops in the system, service to the unit may be required. Failure to...
-
Page 2: Specifications
Type 627F Specifications The Specifications section gives some general specifications for the Type 627F regulator. The nameplates give detailed information for a particular regulator as it comes from the factory. Body Sizes and End Connection Styles Flow Coefficients Ductile iron: 3/4, 1, or 2 NPT See Table 4 Steel: 3/4, 1, or 2 NPT;... -
Page 3: Principle Of Operation
INTERMEDIATE PRESSURE PILOT SUPPLY PRESSURE VACUUM PRESSURE TANK PRESSURE Figure 2. Type 627F Pilot-Operated Pressure Reducing Regulator Operational Schematic VAPOR PRESSURE Table 3. Additional Specifications ALLOWABLE INLET PRESSURE RANGE FOR MAINTAINING OUTLET PRESSURE WITHIN ±1% OF THE ABSOLUTE OUTLET PRESSURE SETTING ORIFICE SIZE 5 psig / 0.34 bar... -
Page 4: Installation
Type 627F Table 4. Flow Coefficients 3/4 NPT BODY NPS 1 / DN 25 BODY NPS 2 / DN 50 BODY ORIFICE SIZE Wide-Open Wide-Open Wide-Open Wide-Open Wide-Open Wide-Open inches 3/8 x 1/8 9.5 x 3.2 12.5 0.43 29.1 12.5 0.43... -
Page 5: Overpressure Protection
(marked “sense”). the regulator. The Type 627F regulator also requires inlet pressure to In order to avoid an overpressure be piped to the pilot supply connection (see Figure 2). condition and possible equipment... -
Page 6: Maintenance
Type 627F Table 6. Recommended Torque Values KEY NUMBER DESCRIPTION FOOT-POUNDS NEWTON METERS Type 627F Actuator Orifice Cap Screw (with aluminum diaphragm casing) Cap Screw (with ductile iron or steel diaphragm casing) Cap Screw Lever Closing Cap Spring Case Cap Screw (with aluminum or ductile iron diaphragm casing) - Page 7 Type 627F These procedures are for gaining access to the disk 4. Apply lubricant to the stem (key 10) and insert the assembly, orifice, diaphragm casing, O-ring, and stem stem into the diaphragm casing (key 5) and hook it assembly. All pressure must be released from the on the lever (key 15).
- Page 8 Type 627F seat bolt (key 61) into tension spring (key 32) until 12. Install the tension spring (key 32) on the lower the spring is flush with the top of the bolt threads spring seat (key 31), insert and tighten the as shown in Figure 3.
-
Page 9: Parts Ordering
Description Part Number 2. Remove the machine screws (key 12) and Type 627F Parts Kit (includes keys 4, 7, 9, separate the spring case (key 2) from the body 11, 12, 13, 23, 55, and 63) Aluminum or Ductile iron casing R627FX00A12 assembly (key 1). - Page 10 Type 627F TYPE 627F ACTUATOR TYPE 6351F PILOT 42B1863-D OPTIONAL PILOT SUPPLY TUBING Figure 3. Type 627F Main Regulator Assembly (continued) Type 627F Main Regulator (Figure 3) Type 6351F Pilot (Figure 4) (continued) Description Part Number Description Part Number Parts Kit (included are keys 4, 6, 7, and 23)
- Page 11 32B3310_E APPLY LUBRICANT L1 = MULTI-PURPOSE NLGI GRADE 1 GREASE* L2 = ANTI-SEIZE COMPOUND 1. Lubricants must be selected such that they meet the temperature requirements. *NLGI is the National Lubricating Grease Institute. Figure 3. Type 627F Main Regulator Assembly...
- Page 12 For further information visit www.emersonprocess.com/regulators The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Fisher is a mark owned by Fisher Controls International LLC, a business of Emerson Process Management.