Installation Of Alarm Check Valve

It serves a dual purpose which prevents a reverse flow of water non return also provides for the use of the water motor gong.

Installation of alarm check valve. 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. External bypass prevents false alarm under all supply pressure condition. It serves a dual purpose which prevents a reverse flow of water non return also provides for the use of the water motor gong. Firefighting zone control valve zcv practical installation in the site duration.

Installation the model j 1 alarm check valve must be installed in an area not subject to freezing temperatures or physical damage. Viking wet pipe alarm check valve system system reset procedure duration. 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. The water staying pressurized in the pipes is released over the fire area after the sprinkler is activated.

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. 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. When corro sive atmospheres and or contaminated water supplies are present it is the owner s responsibility to verify compatibility with the model j 1 alarm check valve trim and associated equipment. Globe alarm check valve installation and maintenance guide important notes 1.

I 751 series 751 firelock alarm check valve installation maintenance and testing manual important installation information 1. Any alarm check valve should be carefully tested examined and cleaned periodically in accordance with nfpa 25. Sdh ava technical data. Refer to pages 3 and 4 for dimensional information.

It is most important to ensure a clean water supply free of debris and solid particles such as sand gravel or mud. Verify that adequate space is available for valve trim and accessories. Check valves are used in a wide variety of locations but the focus of the discussion in this tutorial will be the installation of check valves at the steam trap outlet side. A check valve is a type of valve that allows fluids to flow in one direction but closes automatically to prevent flow in the opposite direction backflow.

The wet alarm valve is designed for applications where the water is unlikely to freeze.