Emerson Fisher 627 Series User Manual

Specifications
The Specifications section gives some general specifications for the 627 Series regulators. The nameplates give detailed
information for a particular regulator as it comes from the factory.
Available Constructions
Type 627: Direct-operated pressure reducing regulator
equipped with a pitot tube for greater regulated
capacities (Figure 7).
Type 627R: Type 627 with internal relief and with an
open throat (Figure 8).
Type 627LR: Type 627R with light rate relief spring
(Figure 9).
Type 627M: Type 627 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 10).
Type 627MR: Type 627M with internal relief (Figure 11).
Type 627H: Type 627 with a diaphragm limiter to deliver
a higher outlet pressure (Figure 12).
Type 627HM: Type 627H 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 13).
Type 627OSX: Type 627 with Type OS2 slam shut
device for overpressure protection. Available with Over
and Under Pressure Trip points. (Figure 14)
Body Sizes and End Connection Styles
Maximum Inlet Pressure
(1)
(Body Rating)
Flanged Stainless Steel: 1440 psig / 99.3 bar
NPT Stainless Steel: 2000 psig / 138 bar
Flanged Steel: 1500 psig / 103 bar
NPT Steel: 2000 psig / 138 bar
NPT Steel (Type 627OSX):
1500 psig / 138 bar
Ductile Iron: 1000 psig / 69.0 bar
Maximum Valve Disk Inlet Pressure Rating
(1)
Nylon (PA) Disk: 2000 psig / 138 bar
Nitrile (NBR) Disk: 1000 psig / 69.0 bar
Fluorocarbon (FKM) Disk: 300 psig / 20.7 bar
Maximum Operating Inlet Pressure, Pressure Differential
and Outlet Pressure Ranges
(1)
See Table 1 for pressures by orifice size and
spring range
Maximum Spring and Diaphragm Casing Pressure
(1)
See Table 2
Maximum Body Outlet Pressure
(1)(2)
Types 627M, 627MR and 627HM only
NPT Steel: 2000 psig / 138 bar
Flanged Steel: 1500 psig / 103 bar
Ductile Iron: 1000 psig / 69.0 bar
Type 627OSX
NPT Steel: 1500 psig / 103 bar
Orifice Sizes
See Table 1
Internal Relief Performance
Type 627R: See Table 3
Type 627LR: See Table 4
Type 627MR: Limited by field-installed control
line piping
Elastomer Temperature Capabilities
(1)(3)
Flow Coefficients
See Table 5
IEC Sizing Coefficients
See Table 6
Pressure Registration
Type 627, 627H, 627R, 627LR, 627OSX or 627HOSX:
Internal
Type 627M, 627HM, 627MR, 627MOSX or 627HMOSX:
External through 1/4 NPT control line connection in the
diaphragm casing
BODY SIZE
END CONNECTION STYLE
CONSTRUCTION
AVAILABLE
NPS DN
3/4 - - - - NPT
All
1 25
NPT, CL150 RF, CL300 RF,
CL600 RF and Long Body
1-1/4 32 NPT
2 50
NPT, CL150 RF, CL300 RF,
CL600 RF and Long Body
MATERIAL
DISK/
DIAPHRAGM
TEMPERATURE
°F °C
Nitrile (NBR)
Disk
-40 to 180 -40 to 82
Diaphragm
Fluorocarbon (FKM)
Disk
0 to 180 -18 to 82
Diaphragm
Nylon (PA) Disk -40 to 180 -40 to 82
Neoprene (CR) for
Types 627H and 627HM only
Diaphragm -40 to 180 -40 to 82
Nitrile (NBR) for Types 627OSX
and 627MOSX only
Disk
-20 to 180 -29 to 82
Diaphragm
Neoprene (CR) for
Types 627HOSX and
627HMOSX only
Diaphragm -20 to 180 -29 to 82
1. The pressure/temperature limits in this Instruction Manual or any applicable standard limitation should not be exceeded.
2. Types 627, 627H, 627R,627LR and 627OSX are limited by maximum diaphragm casing pressure.
3. Stainless steel body is rated to -40°F / -40°C. Steel and Ductile Iron bodies are rated to -20°F / -29°C.
2
627 Series

Emerson Fisher 627 Series Specifications

General

Brand	Emerson
Model	Fisher 627 Series
Category	Controller
Language	English