Test and Drain Valve

The test and drain valve is a type of 3-state valve and has three states: off, test, and drain. The valve orifice is 0.5 inch in test mode and 1 inch in discharge mode. The use of this valve means that one piece performs both test and drain work in the automatic fire extinguishing system. Also, this piece has an orifice and side glass. Test and drain valve or test and drain valve is a type of ball valve. This valve is one of the most widely used valves in fire extinguishing and fire fighting systems, especially sprinkler systems.

The Test Drain Valve has three states: OFF / Test / Drain, and the operation of all three stages is as follows:

OFF status: At this stage, the fluid flow is completely stopped. Test state: In this state, the fluid passes through the orifice, which passes the flow rate of a sprinkler, and creates a function similar to breaking the sprinkler bulb. Also, this valve has a Sight Glass that shows the flow of fluid. If the control zone system does not respond to the flow of fluid. By visual observation in the valve test and drain, the defect in the valve control zone system can be detected, in which case there is a possibility of failure in the flow switch of the water flow. Drain situation: In a situation where there is a tendency to drain the fluid flow from inside the pipe. In order to repair or service the sprinkler network, you can put the valve handle on the Drain mode. This valve has a sight glass that shows the flow of fluid. If the zone control system does not respond to the passage of the fluid flow, it is possible to understand the fault in the valve control zone system in the test and discharge valve. It is generally assumed that the failure is in the flow switch of the water flow. Thus, the existence of Glass Sight on the valve is very important.