EPDM seat and o-rings. both schedule 40 and 80 pipe. for 150 PSI @ 73 degrees fahrenheit. integrative piping system. NSF. solvent ends with ASTM D2466. '' White PVC schedule 40 solvent ball valve NSF approved integrative piping system components Rated for 150 PSI @ 73 degrees fahrenheit EPDM seats, EPDM o-rings Fits both schedule 40 & 80 pipe solvent ends comply with ASTM D2466.