Type 627F
2
1. The pressure/temperature limits in this Instruction Manual or any applicable standard limitation should not be exceeded.
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
Ductile iron:
3/4, 1, or 2 NPT
Steel:
3/4, 1, or 2 NPT;
NPS 1 or 2 / DN 25 or 50, CL150 RF,
CL300 RF, CL600 RF, PN 16/25/40 RF Flanged
Minimum Pressure Differential
20 psid / 1.4 bar d
Maximum Inlet and Differential Pressures
(1)
See Table 2
Maximum Emergency Outlet Pressure
(1)
250 psig / 17.2 bar for all Type 627F actuators and
Type 6351F pilot components
Outlet Pressure Ranges
5 to 100 psig / 0.34 to 6.9 bar
See Table 1
Orifice Sizes
3/8 x 1/8, 3/8 x 1/4, 3/8, or 1/2 inch /
9.5 x 3.2; 9.5 x 6.4; 9.5; or 13 mm
Temperature Capabilities
(1)
-20 to 180°F / -29 to 82°C
Flow Coefficients
See Table 4
IEC Sizing Coefficients
See Table 5
Pressure Registration
External
Pilot Supply Connection
1/4 NPT
Pilot Sense Connection
1/4 NPT
Body Tap Connection
1/4 NPT (ductile iron body only)
Approximate Weights
NPT body with Ductile iron or steel casings:
10 pounds / 4 kg
NPT body with aluminum casings:
6.3 pounds / 3 kg
Flanged body with steel casings:
18 pounds / 8 kg
Flanged body with Ductile iron casings:
14 pounds / 6 kg
Table 1.
Outlet Pressure Ranges
ORIFICE SIZE
MAXIMUM INLET PRESSURE
MAXIMUM PRESSURE DIFFERENTIAL
inch
mm
psig
bar
psig
bar
3/8 x 1/8
3/8 x 1/4
3/8
1/2
9.5 x 3.2
9.5 x 6.3
9.5
13
250
250
250
125
17.2
17.2
17.2
8.6
250
250
250
125
17.2
17.2
17.2
8.6
Table 2.
Maximum Allowable Inlet Pressures and Pressure Differential
PILOT TYPE
OUTLET PRESSURE RANGE
PILOT CONTROL SPRING INFORMATION
Part Number
Color Code
Wire Diameter
Free Length
psig
bar
inches
mm
inches
mm
6351F
5 to 35
35 to 100
0.34 to 2.4
2.4 to 6.9
1B788327022
1K748527022
Unpainted
Red
0.142
0.192
3.61
4.88
2.13
2.19
54.1
55.6
