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4" MODEL G-4000P
TECHNICAL DATA
DOUBLE INTERLOCK PREACTION
WITH ELECTRIC/PNEUMATIC RELEASE
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
B. Fire Condition:
When the detection system operates, the normally closed solenoid valve is powered open. At this point, the prime water is still held
in the prime chamber by the closed pneumatic actuator. When a sprinkler operates, air pressure is lost on the sensing end of the
pneumatic actuator, causing the pneumatic actuator to open. With both the pneumatic actuator and solenoid valve open, prime
water is drained from the prime chamber, causing the G-4000P Valve to open, filling the sprinkler piping with water. Water from
the intermediate chamber of the G-4000P Valve pressurizes the sensing end of the PORV causing the PORV to open. The open
PORV prevents water pressure from building in the prime chamber should the solenoid or pneumatic actuator close.
Figure 7 - Fire Condition
Form No. F_112008
18.10.25
P65
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