Pneumatic Screwed Ball Valve 1)2PC Pneumatic Ball Valve 2)WCB,SS304/316,1/4''-4'' 3)CE& ... ISO 4)Material test report provided 2PC Screwed Ball Valve With Pneumatic Actuator1)Material:SS304,304L,316,316L2)Size:1/4 ... .Temperature range: -60 to 450 °F6.Blow-out proof stem, ball are made of ss316 or customer request7.100% leakage tested ...