Alarm Check Valve Use

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.

Alarm check valve use. Mafco is a well known manufacturer of high quality fire hydrant valves fire fighting nozzles alarm check valves fire vehicle equipment fire hose couplings and their adapters and so forth. Either manually when a person activates a water gong or electronically. A swing check valve can act as an alarm check valve for a wet pipe fire sprinkler system but only when that valve can sound an alarm. Located in taichung taiwan mafco takes orders worldwide and also offers customized services before and after the products are sold.

The wet alarm valve is designed for applications where the water is unlikely to freeze. The main purpose of the alarm check valve is to ring a mechanical bell called a water motor gong. The main purpose of the alarm check valve is to ring a mechanical bell called a water motor gong. Meanwhile in the event of variable pressure condition false alarm is prevented with provision of retard chamber at the external bypass.

The valve should if properly maintained help hold the system pressure steady and reduce the possibility of false alarms. Alarm check valve is core element in wet pipe fire sprinkler systems. If the bell alarm is electrical or connected to a fire alarm system per nfpa 72 and not mechanical i would approve a check valve. Under normal circumstances the clapper of the valve is.

For optional pre trimmed model j 1 alarm check valves refer to the current viking price list or contact the manufacturer. An alarm check valve can be activated or opened in one of two basic ways. External bypass prevents false alarm under all supply pressure condition. If during the annual inspection of alarm check valves sediment or free particles of matter are noted a further.

It is most important to ensure a clean water supply free of debris and solid particles such as sand gravel or mud. Any alarm check valve should be carefully tested examined and cleaned periodically in accordance with nfpa 25. It serves a dual purpose which prevents a reverse flow of water non return also provides for the use of the water motor gong. 300 psi 20 7 bar vertical trim for use when the j 1 alarm check valve is installed vertically.

An alarm check valve is basically a check valve with an alarm port. 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. The water staying pressurized in the pipes is released over the fire area after the sprinkler is activated. 300 psi 20 7 bar horizontal trim for use when the j 1 alarm check valve is installed horizontally.