Rapidrop Fig. 801 Test & Drain Valve with incorporated acrylic sight glass delivers a basic function for testing of water flow through sprinkler systems. The most common application is in multistory. buildings where water flow alarm devices are required on each floor at each riser. It may be located inside or outside of a building, connected to a single or common drain point.
Nominal pressure rated to 20.6 bar (300 PSI)
Working temperature range of -10 / +120°C (14 / 250°F)
Approval: UL Listed & FM Approved
Available in 1”, 1 ¼”, 1 ½” and 2” pipe size connections Standard thread connection:
BSPT K Factor K80 (K5.6)
Brass body with three position ball valve OFF / TEST / DRAIN Integral sight glass with acrylic see through windows
Standard equipment:
Female NPT inlet and outlet, forged
brass body, brass finish ball
with teflon seats.
Test and Drain Valve is a type of ball valve used in fire systems, especially for testing whether the system is working or not. It is installed on the system from the fire alarm valves to the sprinkler installation in the required zones.
The ball used in the test and drain valve is rotatable via the stem by the lever and consists of 3 positions as test, drain and off. In the test position, the ball hole is an orifice of the diameter determined according to the smallest diameter sprinkler that is located at the zonal. With this orifice it is possible to calculate and test the amount and duration of the water to be discharged from the sprinkler if needed. The drain position ensures that it can be used as a drain valve when requested. The flow through the sight glass on both sides of the Test and Drain Valve can be observed.