ZMHN type direct acting pressure regulator valve Product Overview direct acting pressure regulator valve, an operation without external energy and media, operate and maintain their own before the valve or the valve variable constant flow regulating valve is controlled according to the energy used to automatically adjusting the temperature below 200 ℃ non-etching gas, oil, steam pressure for a given value, has a simple structure, reliable operation, easy maintenance, and low cost advantages of fire and explosion. Type valve works directly after the pressure regulating valve effect adjustment signal, acquired by the valve within the pipe, as it acts on the membrane chamber is adjusted to increase the pressure, after overcoming the force generated by the hammer, the valve body is moved downward, gradually seat closed, the flow cross-section decreases, the spool upward movement, flow cross-section increases until it is equal to a given value of the regulated pressure so far. Before the regulator valve direct acting pressure regulator valve signal, and achieved by the inner valve before the pipeline, which along with the role of the film chamber is adjusted to increase the pressure to overcome the force generated after the hammer, the spool moves down gradually leave the valve seat, so that the flow area increases, the pressure until the valve before the fall to a given value; conversely, when the film chamber pressure to bear fruit, the force generated by the weight of the valve body to rise, gradually closing the valve seat, so that the flow of cross-section is reduced until the valve before the pressure increased to a given value. Technical parameters and performance adjustment range: the 1st film room: 0.5 to 1.3; the 2nd film room: 0.1 to 0.5; the 4th film room: 0.015 ~ 0.1MPa
Body type formula: through engine casting valve
Nominal diameter: 25,32,40,50,65,80,100,125,150,200mm
Nominal: PN1.6MPa
Flange Standard: JB79-59, JB78-59 etc.
Materials: cast iron (HT200), cast (ZG230-450), cast stainless steel (ZG1Cr18Ni9Ti) etc.
Medium temperature: -20 ~ + 220 ℃ (when the medium temperature is higher than 40 ℃, need to charge the upper chamber filled with water or not mixed with a liquid medium, can also be added on to take pressure line condenser)
Gland type: Bolt Clamp
Packing: V-type PTFE packing Valve components Spool type: two-seat piston-type spool Flow characteristics: quick opening feature
Material: Stainless steel (1Cr18Ni9Ti, 1Cr18Ni12Mo2Ti) and other types of actuators: pneumatic thin lever actuator
Diaphragm material: rubber clip nylon
Ambient temperature: -25 ~ + 55 ℃
Membrane cap fitting: M16 × 1.5
Film cover material: HT200
Valve Acting Type: There are two kinds of valves after the ceremony and before the valve, the valve after the ceremony, the valve before the valve type are used to keep the back in front of the line pressure at a constant value performance
Leakage: less than valve rated capacity of 5 × 10-3
Adjustable range: 30: 1
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