The ZZY self-reliant -like pressure regulator valve does not need the sur- energy, uses is moved medium own energy is the power supply, the introduction implementing agency control valve core position, the change both sides differential pressure and the current capacity, after before causing the valve, (or valve), the pressure is stable. Has the movement to be keen, the leak-proof quality is good, the pressure setpoint fluctuates slightly and so on merits, widely applies in the gas, the liquid and the steam medium reduced pressure constant voltage or the decompression constant voltage automatic control.
    This serial products has single-seat (ZZYP), sleeve (ZZYM), the double seat (ZZYN) three kind of structures; The implementing agency has film, the plunger-type two kinds; The function pattern has the reduced pressure before the valve the pressure control (B) and the decompression uses the valve the pressure control (K). The product nominal pressure rank has PN16, 40, 64; Valve chest caliber scope DN20~300; The spillage rank has II level,Level and VI level of third gear; The discharge characteristic to open quickly; Pressure partition adjustment from 15~2500kPa. May demand must combine satisfies the user operating mode request.

· the self-reliant -like pressure regulator valve does not need the sur- energy, can in the radio airless place work, both facilitated and saved the energy.
· the pressure partition scope is thin, and mutually overlapping, the adjustment precision is high.
· pressure setting value in movement period may establish continuously.
· after the valve pressure control, after before the valve, pressure and valve, ratio of the pressure is 10:1~10:8.
· the rubber diaphragm type examination, the implementing agency examination precision is high, the movement is keen.
· uses the pressure balance organization, causes the regulating valve response to be keen, the control is precise.

Valve chest: ZG230-450 ZG1Cr18Ni9Ti ZGOCr18Ni12M02Ti
Valve core: 1Cr18Ni9Ti 0Cr18Ni12M02Ti
Valve seat: 1Cr18Ni9Ti 0Cr18Ni12M02Ti
Valve lever: 1Cr18Ni9Ti 0Cr18Ni12M02Ti
Membrane lid: A3 a3 steel spreads the tetrafluoroethylene stainless steel
Padding: Teflon flexible graphite
Rubber diaphragm: Ding Jing, second grade third, fluorine, oil resistant rubber