Name: Fully Lined PTFE EN 593 Ductile Iron Wafer Butterfly Valves. Material: BODY: Ductile Iron. Disc: WCB+PTFE. Seat:PTFE. Shaft: SS 431. Class Rating: 150#. Connection Ends: Flanged Ends. Size: 5 Inch. Operator: Manual Operator. Design standard: EN 593. Face to Face standard: EN 558-1. Testing Standard: EN 12266-1.