System Components
UL EX-4510 12-1-01 Page 1-16
Description
Check valves are used in main/reserve and selector valve
systems. On main/reserve systems, the check valve pre-
vents pressurization of the reserve system manifold by
blocking the flow of INERGEN
®
agent from the main
system to the reserve system. The check valve allows gas
flow from the reserve (if actuated) to pass through into the
distribution piping. On selector valve systems, check valves
separate the actuation of smaller system(s) from the largest
ones.
The check valves are available in sizes from 1/2 in. through
3 in.
Check Valves
Shipping Assembly
Part No.
Description
840860
1/2 in. check valve
840852
3/4 in. check valve
841470
1 in. check valve
841549
1 1/4 in. check valve
841463
1 1/2 in. check valve
840649
2 in. check valve
840656
2 1/2 in. check valve
840665
3 in. check valve
Component
Material
Thread Size/Type
Body Type
Approvals
Equivalent Length
(Sch. 80 Pipe)
Check Valve
Bronze
1/2-14 NPT Female
Threaded
UL Listed (EX-4510)
12. 0 ft. (3.7 m)
Check Valve
Bronze
3/4-14 NPT Female
Threaded
UL Listed (EX-4510)
24.0 ft. (7.3 m)
Check Valve
Bronze
1-11 1/2 NPT Female
Threaded
UL Listed (EX-4510)
28.0 ft. (8.5 m)
Check Valve
Bronze
1 1/4 -11 1/2 NPT Female
Threaded
UL Listed (EX-4510)
43.0 ft. (13.1 m)
Check Valve
Bronze
1 1/2-11 1/2 NPT Female
Threaded
UL Listed (EX-4510)
51.0 ft. (15.5 m)
UL Listed (EX-4510)
Check Valve
Bronze
2-11 1/2 NPT Female
Threaded
UL Listed (EX-4510)
48.0 ft. (14.6 m)
Check Valve
Bronze
2 1/2-8 NPT Female
Threaded
UL Listed (EX-4510)
60.0 ft. (18.3 m)
Check Valve
Bronze Body
3-8 NPT Female
Threaded
UL Listed (EX-4510)
154.0 ft. (46.9 m)
Steel Flange
Flange
ANSUL
®
®
