4" PVC True Union Swing Check Valve - Threaded (S1720-40F)

Available now - this 4" true union swing check valve! The ends of this valve are unions which make it simple to get to your line for maintenance or to replace your valve. The connections are 4" female pipe thread NPT and are compatible with 4" male pipe thread. These swing check valves are made to prevent backflow by only allowing flow to travel in one direction using a flap door.

Nominal Size: 4"

Material: PVC, EPDM Seals

End Type: Female Threaded (NPT)

Pressure Rating (Open): 150 psi @ 73F Full Flow

Pressure Rating (Closed): 75 psi Back Pressure

*Standard 4" nominal size male threaded (NPT) PVC fittings fit inside both ends of this valve.