Alarm Check Valve Pdf

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.

Alarm check valve pdf. Waterflow detectors waterflow detectors are available for installation on the riser. Documents and resources technical data sheets. E alarm check valves with e3 trim. If during the annual inspection of alarm check valves sediment or free particles of matter are noted a further.

4 100 mm 6 150 mm 8 200 mm download bulletin. In the event of variable pressure condition false alarm. Cancer and reproductive harm www p65warnings ca gov. Cancer and reproductive harm www p65warnings ca gov.

An alarm check valve can be activated or opened in one of two basic ways. In the event of variable pressure condition. Either manually when a person activates a water gong or electronically. 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.

The bypass check valve reduces the possibility of false alarms by permitting slow as well as small transient increases in water supply pressure to be passed through. Meanwhile in the event of variable pressure condition false alarm is prevented with provision of retard chamber at the external bypass. It serves a dual purpose which prevents a reverse flow of water non return also provides for the use of the water motor gong. Verify that the appropriate trim chart and technical data for the alarm check valve and associated equipment are available.

External bypass prevents false alarm under all supply pressure condition. 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 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. See full size image.

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 the access cover up. External bypass prevents false alarm under all supply pressure condition. Alarm check valve is core element in wet pipe fire sprinkler systems. Technical data sheet en it nl pt.

E alarm check valves with e3 trim. Any alarm check valve should be carefully tested examined and cleaned periodically in accordance with nfpa 25.