SS304 Screwed Type NPT Ball Valves, Class 150#, ANSI STANDARDS 1. Material: Stainless Steel 2. Connection: NPT About usKaysuns Industry Ltd.(Wenzhou Kaize Trading Co ... Ball Valves, Class 150#, ANSI STANDARDS Screwed Type NPT Ball Valves1)materail:SS304,SS316,CF8M,CF82)Size:1/2',3/4',1',11/4'11/2',2',21/2 ...