... the size from DN 1/2" to DN24" and the pressure from PN150lb to 4500lb. API code. ... valves, 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 ... , CFBM, CF3, CF3M, CN7M, CD-4MCu, M-30C and forgings of A105, F1, F5, F11, F22, LF1, 304 ...