Alarm Check Valve

As the most common type of system wet sprinkler systems have water available at the sprinkler so when a fire occurs and the sprinkler activates water is discharged on the fire immediately.

Alarm check valve. External bypass prevents false alarm under all supply pressure condition. J 1 alarm check valve trim and associated equipment. The valve is designed to initiate an alarm during a sustained flow of water such as the flow required by an open sprinkler by operating an optional water motor alarm and or alarm. When there is a steady flow of water into the sprinkler system due to a sprin kler operation the waterway clapper.

Sdh ava technical data. It serves a dual purpose which prevents a reverse flow of water non return also provides for the use of the water motor gong. 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. The wet alarm valve is designed for applications where the water is unlikely to freeze.

An alarm check valve can be activated or opened in one of two basic ways. Prior to installing the valve thoroughly flush the water supply piping to verify that no foreign matter is present. Meanwhile in the event of variable pressure condition false alarm is prevented with provision of retard chamber at the external bypass. The model j 1 alarm check valve may be installed in the vertical position with direction of flow up or in the horizontal position with.

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. 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. Reliable wet system valves are designed to control sprinkler systems in areas that are temperature controlled to at least 40 f 4 c.