For hot water heating and supply boilers - Bronze body ¾" to 2" (20 - 50 mm)

For hot water heating and supply boilers - Iron body with bronze inlet ¾" (20 mm)

For hot water heating and supply boilers - Iron body ¾" to 2" (20 - 50 mm)

For hot water storage tanks and heaters ½" and ¾" N.P.T. threaded male inlet x female outlet

For hot water storage tanks and heaters ¾" N.P.T. threaded male inlet x female outlet

For hot water supply tanks and heaters ¾" to 2" N.P.T.

For fire protection grid systems - UL listed
½" N.P.T. threaded male inlet x female outlet

Automatically vents a closed system if vacuum occurs ½" and ¾" N.P.T. threaded male inlet

For hot water storage heaters ¾" N.P.T. male connection