Fire Alarm Check Valve Operation

Water motor alarm hydraulically operated mechanical sprinkler alarm model cv 1fr riser check valv 2 through 8 model rm 1 model rm 1 riser manifold commercial and residential rapid response model rsv 1 residential shut off valve dual purpose water supply domestic and fire sprinkler system model av 1 300 model av 1 300 alarm valve. Fire fighting dry pipe valve operation duration. The main purpose of the alarm check valve is to ring a mechanical bell called a water motor gong.

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Hd alarm valves act as a check valves by trapping pressurized water above the clapper and preventing reverse flow from sprinkler piping.

Fire alarm check valve operation. The wet alarm valve is designed for applications where the water is unlikely to freeze. External bypass prevents false alarm under all supply pressure condition. An alarm check valve is basically a check valve with an alarm port. Description 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.

Ahmed khamis 167 114 views. The water staying pressurized in the pipes is released over the fire area after the sprinkler is activated. Either manually when a person activates a water gong or electronically. It serves a dual purpose which prevents a reverse flow of water non return also provides for the use of the water motor gong.

The valve should if properly maintained help hold the system pressure steady and reduce the possibility of false alarms. Viking wet pipe alarm check valve system system reset procedure duration. 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. An alarm check valve can be activated or opened in one of two basic ways.

Alarm check valve is core element in wet pipe fire sprinkler systems. Sdh ava technical data. Alarm valves are designed to initiate an alarm through water motor gong bell and or pressure switch during a sustained flow of water such as the flow required by an open sprinkler. 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.

They mainly serve a dual purpose in that they restrict reverse flow of water through their bodies. It serves a dual purpose which prevents a reverse flow of water non return also provides for the use of the water motor gong. Globe fire sprinkler alarm check valves are used in wet pipe fire sprinkler systems. External bypass prevents false alarm under all supply pressure condition.

In the event of variable pressure condition. They also provide for the use of a hydraulic fire alarm which is not reliant on an electrical power supply for its operation.