The Rapidrop Model 801 Test & Drain Valve with incorporated acrylic sight glass delivers a basic function for testing of water flow through sprinkler systems. Its typical application is in multi-storey 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.
Test Drain Valve is used in plumbing systems to ensure proper operation and maintenance is the test drain valve. The low points of a piping system, such as the bottom of a vertical riser or the end of a horizontal pipe run, are where it is typically installed. Its main function is to enable the removal of water from the system for maintenance or testing. Test Drain Valve frequently has a test port that can be used to gauge system pressure or flow rates in addition to acting as a drain. This can be helpful in identifying leaks that might be affecting the plumbing system's functionality.