Ductile iron wafer check valve. United brass valves are designed and tested to be the best and most reliable valves money can buy. Model 99s Swing Check Valve On United Brass Works Inc Not approved for potable water applications. United brass works check valve . The 4” size is provided with ½” pipe plug in drain port as standard configuration. Used to manually check a liquid level in a tank most commonly used on water boilers. Catalog including model 50 lift check valve, model 50ls lift check valve, model 50t lift check valve, model 50tls lift check valve, model 53 lift check valve For industrial industries and applications. United brass works model 90 3 in. Model 90 wafer check valve ul listed • fm approved* *as antiwater hammer check valve for fire pump service only! Features an aluminum hand wheel. United brass works model 90 ductile iron wafer check valve www.ferguson.com lead law warning: Swing check valves are placed on return line after steam trap. ...