It is used to help prevent false alarms associated with pressure variations in public water supplies. The Model AV-1-300 alarm check valve trim includes pressure gauges to monitor system pressure conditions, a bypass check valve, a main drain valve, and an alarm test valve.

FireLock™ Series 751 Alarm Check Valve. Prevents the reverse flow of water from the system piping to the water supply; Sizes from 1½ – 8″ | 40 – 200 mm; Pressures up to 300 psi | 2068 kPa | 21 bar

The Viking Model J-1 Alarm Check Valve serves as a check valve by trapping pressurized water above the clapper and preventing reverse flow from sprinkler piping.

Alarm check valve is mainly used in wet pipe fire protection system, which prevents the reverse flow and controls water pressure. It automatically actuates alarm when water flows into the system upon fire sprinkler operation. Available size (Source 1 with UL/FM)

Alarm Check Valve serves as a check valve by trapping pressurized water above the clapper and preventing reverse flow from sprinkler piping.

An alarm check valve can be activated (or opened) in one of two basic ways: either manually when a person activates a water gong, or electronically. Once the alarm check valves are activated, they will allow water to flow through the system, engaging the sprinkler system as and where needed in order to suppress a potential fire.

2023年1月23日 · An Alarm Check Valve consists of multiple components that make up the entire valve assembly. These components include the following: Check valve clapper – The clapper is the component that maintains water pressure on the …

Alarm pressure switch – The Series 751 FireLock Alarm Check Valve is designed to allow the installation of pressure switches to activate electric alarms and control panels when a sustained flow of water (such as an open sprinkler) causes the alarm check’s clapper to lift from its seat.