Mueller® UL listed, FM approved Check Valves are Gravity operated Swing Check Valves. They are rugged in construction and simple in design and allow the removal of all internal parts through the top of the Valve, enabling inspection or replacement without removing the Valve from the system. Mueller Check Valves are bossed on both sides of the body and have a drain plug at the inlet end of the Valve. The Mueller Check Valve is available with Rubber Disc Facing and Bronze Seat Ring.
A-2122 UL/FM Swing Check Valve