
Type 627F
2
1. The pressure/temperature limits in this Instruction Manual or any applicable standard limitation should not be exceeded.
Specications
The Specications section gives some general specications 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
Orice 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 Coefcients
See Table 4
IEC Sizing Coefcients
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
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