Dual phase steel special high-pressure self operated regulating valveThere are three types of structures: single seat (ZZYP), sleeve (ZZYM), and double seat (ZZYN); There are two types of actuators: membrane type and piston type; The types of action include pressure regulation after the pressure reducing valve (Type B) and pressure regulation before the pressure relief valve (Type K). The nominal pressure rating of the product includes PN16, 40, and 64; Valve body diameter range DN20-300; There are three levels of leakage: Level II, Level IV, and Level VI; The traffic characteristic is fast opening; The pressure is adjusted in stages from 15 to 2500Kpa. Can be combined as needed to meet user operating requirements.
Product features of high-pressure self operated flow regulating valve：
Self operated pressure regulating valves do not require external energy and can work in places without electricity or gas, which is both convenient and energy-saving.
The pressure segmentation range is fine and intersecting with each other, with high adjustment accuracy.
The pressure setting value can be continuously set during operation.
◇ For regulating the pressure after the valve, the ratio of the pressure before the valve to the pressure after the valve can be 10:1-10:8.
Rubber diaphragm type detection, with high precision and sensitive action of the actuator.
◇ Adopting a pressure balance mechanism to make the regulating valve responsive and accurately controlled.

Main component materials of high-pressure self operated flow regulating valve：
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
◇ Fillers: Nitrile, Ethylene Propylene, Fluorine, Oil Resistant Rubber

Connection standard for high-pressure self operated flow regulating valve：
◇ Flange standard: Casting method according to BG9113-88, JB/79-94
◇ Flange sealing surface type: PN16 convex surface
PN40 and 64 are concave convex, and the valve body is concave convex
The structural length shall be in accordance with BG12221-98
◇ Execution mechanism signal interface: Internal thread M16 × 1.5