This series of products have three structures: single seat (zzyp), sleeve (zzym), double (zzyn) and; There are two kinds of actuators: diaphragm type and piston type; The function types include pressure regulation behind the pressure reducing valve (type b) and pressure regulation before the pressure relief valve (type K). The nominal pressure grades of products are PN16, 40 and 64; The diameter range of valve body is DN20 ~ 300; There are three levels of leakage: Level II, level IV and level VI; The flow characteristic is fast opening; The pressure is adjusted in sections from 15 to 2500 kPa. It can be combined as required to meet the working conditions of users.
The self operated pressure regulating valve does not need additional energy and can work in a place without electricity and gas, which is convenient and saves energy. The range of pressure sections is fine and cross each other, and the adjustment accuracy is high. The pressure setting value can be set continuously during operation. For the pressure regulation behind the valve, the ratio of the pressure before the valve to the pressure behind the valve can be 10:1 ~ 10:8. Rubber diaphragm detection, high measurement accuracy and sensitive action of actuator. The pressure balance mechanism is adopted to make the control valve sensitive and accurate.
Material of main parts
Main part materials: valve body: zg230-450, zg1cr18ni9ti, zgcr18ni12mo2ti
Valve core: 1Cr18Ni9Ti, Cr18Ni12Mo2Ti
Valve seat: 1Cr18Ni9Ti, Cr18Ni12Mo2Ti
Valve stem: 1Cr18Ni9Ti, Cr18Ni12Mo2Ti
Membrane cover: A3, A3 steel coated with tetrafluoroethylene stainless steel
Filler: nitrile, Yibing, fluorine, oil resistant rubber
Flange standard: casting method according to bg9113-88 and JB / 79-94
Flange sealing surface type: PN16 convex
PN40 and 64 are concave convex, and the valve body is concave
The structural length is as per bg12221-98
Actuator signal interface: internal thread M16 × one point five
※ the distance between valve body flange and flange end face can be manufactured according to the standard specified by the user. Such as ANSI, JIS, DIN, etc.