... the size from DN 1/2" to DN24" and the pressure from PN150lb to 4500lb. API code. ... butterfly valve, check valves, diaphragm valves, ball valves, and instrument valves can be supplied accordance with the standard & ... be supplied from DN 1/2" to DN24" and more biger size (for special requirement). The material ... CF8, CFBM, CF3, CF3M, CN7M, CD-4MCu, M-30C and forgings of A105, F1, F5, F11, F22, LF1, 304, 316 ...