Model 2511A is a 300 PSI rated single-handed ball valve designed to provide both the test and express drain functions for a wet fire sprinkler system. It saves time, space, and money by eliminating the numerous connections required by the traditional assembly loop. Model 2511A features a tamper-resistant test orifice and sight glass, a tapped port for system access, and a pressure relief valve. It's available in 1", 1-1/4", and 2" with Groove x Groove connections for quick installation and it's available in 1" and 1-1/4" thread by thread (NPT) connection. FM approved & UL Certified. Made in America.