Check Valves : BT Series - True Union
Materials: PVC, CPVC, PP, PVDF
Sizes: ½" - 2"
Ends: Threaded, Socket, Flanged, Butt or ChemFlare
Seat/Seals: EPDM, FKM (Viton®), PTFE coated FKM (Viton®)
Features:
Built-in Union Design
Free Floating Ball
Uniseat/Seal
Excellent flow characteristics 
