Operative standard We could produce as customers’ requirements, using ASME, RCC-M,EJ,GB standard. Type,material and main parameter DN(mm) 101520253240506580100125150200 Pressure Rating (CL) PN11.62.54.06.4101620253240(MPa) CLASS 150  300  600  900  1500  2000  2500 Material of parts Body,bonnet WCBCF8CF8MCF3CF3MA105304304L316316L Stem 1Cr17Ni22Cr133043160Cr17Ni7Al Disc 25316316L Nut ZCuAl9Mn2 Seal surface Stellite Packing Flexible Graphite Working condition medium water, steam, borated water, demineralized water, coolant, etc. temperature ≤425 Drive mode Motor,manual,pneumatic Connection and size According to ASME standard or customers’requirement