The 4" Butterfly Valve with an EPDM Seat is engineered for superior performance and durability. Offering excellent flow rates, this valve features a full liner with integrated material ID and position lock to prevent pinching during disc seating. The lightweight, glass-filled polypropylene body is 40% lighter than PVC and can withstand service temperatures up to 250°F. Designed with a 316 stainless steel hexagon shaft for low stress distribution and a double O-ring shaft seal with PVDF non-wearing shaft bearing, this valve ensures reliable and efficient operation.