Ball is characterized for proportional flow (slow or fast opening). 1/4 in. - 2 in. rated @ 250PSI, 2-1/2 in. to 4 in. @ 235PSI, 6 in. flanged @ 150PSI. Offered in PVC and CPVC. O-rings are FPM or EPDM and seats are PTFE. Sizes up to 2 in. have socket and threaded end connections.