161 563 045 4" Gear Operated Butterfly Valve comes standard with EPDM O-rings. Butterfly Valves are used for quick on / off application of a piping system. Butterfly valves are installed by using flanges and stud packs. These valves have wetted inner body material that is made of PVC, can handle 150 PSI and temperatures up to 140 degrees F. PVC Pipe Supplies offers sizes that range from 2" to 12" on these butterfly valves. We stock these valves in many of our factories nationwide for quick on time shipping