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Control systems Control valves
∆PMX - Maximum differential pressures for PF51G piston actuated valves (continued) PF51G-BD (Bi-Directional normally closed)
* Maximum differential pressure (port 1 to 2) bar (psi)
* Maximum differential pressure (port 2 to 1) bar (psi)
Pilot pressure
Actuator diameter mm (in)
Flow direction (port 1 to 2)
Flow direction (port 2 to 1)
Minimum bar (psi)
Maximum bar (psi)
Model
Valve size
16 (232) 7 (102)
DN15 - ( ½ ")
over seat
under seat
45 (1.8)
5 (73)
PF51G-1BD
DN20 - ( ¾ ")
over seat
under seat
5 (73)
DN25 - (1")
over seat
under seat
16 (232)
DN15 - ( ½ ")
over seat
under seat
16 (232) 11 (160)
DN20 - ( ¾ ")
10 (145)
over seat
under seat
3.8 (55)
DN25 - (1")
over seat
under seat
63 (2.5)
6 (87) 4 (58) 2.5 (36)
PF51G-2BD
DN32 - (1 ¼ ")
over seat
under seat
3.3 (48)
4.1 150
12 (174) 8 (116)
DN40 - (1 ½ ")
over seat
under seat
3.8 (55)
DN50 - (2")
over seat
under seat
14 (203) 12 (174) 8 (116)
DN25 - (1")
over seat
under seat
16 (232)
DN32 - (1 ¼ ")
over seat
under seat
90 (3.5)
3.3 (48)
8 (116)
PF51G-3BD
DN40 - (1 ½ ")
over seat
under seat
14 (203)
5 (73)
DN50 - (2")
over seat
under seat
TI-P373-14 CMGT Issue 7
Page 6 of 12
PF51G BronzePiston Actuated On/Off Valves
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