Alarm Check Valve Working Principle

Deluge valve working principle what is a deluge valve.

Alarm check valve working principle. Deluge valves are used in conditions that require for quick application of large volumes of water and for that reason are often integral components in fire protection systems. But in case of po check valve fluid flow in reverse direction will take place after applying adequate pilot pressure by a pilot line. They will permit the free flow in one direction and will prevent the fluid flow in reverse direction. Check valves are two port valves meaning they have two openings in the body one for fluid to enter and the other for fluid to leave.

Also do inform the local security personnel and alarm control station so that a false alarm is not signaled. The wet alarm valve is designed for applications where the water is unlikely to freeze. 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. In this article we will be discussing the check valves working principle as well as check valve types and applications.

Either manually when a person activates a water gong or electronically. The valve should if properly maintained help hold the system pressure steady and reduce the possibility of false alarms. The main purpose of the alarm check valve is to ring a mechanical bell called a water motor gong. The pilot pressure needed to open the check valve against a load pressure depends upon the ratio of the areas of the pilot piston and check valve.

Valve to undertake repair work or to test the valve without placing a roving fire patrol in the area covered by the system. Under normal circumstances the clapper of the valve is. A pilot operated check valve is shown in figure 2 a. Check valves are important to many different processes and applications including gas and fluid systems.

There are various types of check valves used in a wide variety of. An alarm check valve is basically a check valve with an alarm port. A check valve clack valve non return valve reflux valve retention valve or one way valve is a valve that normally allows fluid liquid or gas to flow through it in only one direction. An alarm valve prevents a reverse flow of water from the installation into the fire pump room but in case a fire sprinkler is activated opened due to fire the alarm valve will open and permit.

An alarm check valve can be activated or opened in one of two basic ways. The patrol should continue until the system is back into service. Open the alarm test valve. Po check valves will also work as other conventional check valve i e.