Wet Alarm Valve
Alarm Valve is a double seated clapper check valve with grooved seat design, which ensures positive water flow for alarm operation and is designed for installation in wet pipe sprinkler system. External bypass prevents false alarm under all supply pressure condition.
In the event of variable pressure condition, false alarm is prevented with the provision of retard chamber, thus the design allows for installation under both variable and constant supply pressure condition.
Operation of one or more automatic fire sprinklers causes the water to flow into the sprinkler system causing the alarm valve to open, allowing continuous flow of water into the system and transmittal of alarm, both electrical and mechanical.
NOMINAL SIZE | 200, 150, 100, & 80 NB | |
END CONNECTION | Flange X Flange Flange X Groove Groove X Groove | |
MAXIMUM | 17.5 Bar (250 PSI)* WORKING PRESSURE | |
THREADED OPENING | BSPT | |
MOUNTING | Vertical | |
FLANGE CONNECTION | ANSI B16.42 #150 | |
(Flange drilling mtaching to ANSI B 16.5 #150) | ||
TRIM | Galvanlsed fitting with | |
Brass Valves | ||
FACTORY HYDROSTATIC | 35 Kg./ Sq.cm. (500PSI) TEST PRESSURE | |
FRICTIONAL LOSS IN | 200 NB | 7.5 Mtrs. 7 Mtrs. |
TERMS OF EQUIVALENT LENGTH OF PIPE (C-120) | 150 NB | 6.1 Mtrs. |
100 NB | ||
80 NB | 4.7 Mtrs. | |
FINISH | Red RAL 3000 | |
ORDERING | Specify Size of valve, Flange | |
INFORMATION | Connection, Trim Details and Pipe OD | |
REFERENCE | NFPA 13 and NFPA 25 |
* For 200 NB FM Approval is rated upto 200PSI (14 Bar)