Pilot type solenoid valve

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Pilot type solenoid valve application:

Pilot solenoid valve power, rely on electromagnetic force to lift the stem, guide valve opening, the electromagnetic valve chamber through the pilot hole pressure relief, in the main spool around the formation of high low pressure difference, under the effect of pressure difference, fluid pressure to push the main spool up to move the main valve mouth open; When power is cut off, under the action of spring force and gravity of the main valve core, the valve stem is restored, the pressure in the upper cavity of the solenoid valve rises, the fluid pressure pushes the main valve core to move downward, and the main valve port is closed. Widely used in steam system, high pressure system, low temperature system, industrial petroleum supply system, liquefied gas storage tank system, power plant equipment, petrochemical equipment pneumatic equipment pipeline automation engineering, etc.

Pilot type solenoid valve features:

The spool is stainless piston type, and the piston ring is made of special temperature-resistant and wear-resistant materials. Piston and metal valve chamber does not produce direct friction, valve body installation direction unlimited; Special coil and heat dissipation structure, so it is not easy to burn out; Stop action for a long time to restart, the action is also sensitive; Low starting pressure 0.2mpa.

1. In special occasions, the power can be electrified for a long time, and all metal sealing is adopted. The temperature of medium fluid can reach 900℃;

2, different use media, the use of targeted sealing, more improve the rationality of the solenoid valve;

3, the use of new and ingenious spool structure and installation of cooling devices, so that the structure is more compact, weight is one third of similar products;

4, the use of stainless steel piston structure, spool wear can be automatically compensated, more improve the life and reliability of the solenoid valve, sustainable and frequent work;

5. The high pressure of medium fluid can be provided with 4.0mpa respectively.

Pilot solenoid valve technical parameters:

Principle structure: step piston type

Size range: N1 — 600

Ambient temperature :-10-+50C, -30-+85C, -50-+100C

The control mode is normally open and normally closed

Supply voltage AC380V, AC220V.AC127V, AC36V.AC24V

DC220V, DC110V DC36V, DC24V.DC12V

Fluid medium: water, gas, oil, etc

Fluid temperature: >-200c. >-60c, >-40c, + 60C +120C, <+200C, <+3500

Fluid pressure 0 03-0 6MPa.0 03-16MPa, 0 03- 2 5MPa 0 03 4 OMPa.0 03 5 OwPa.

0 03-6 4MPa

Connection: internal thread, external thread), flange, concave – convex flange welding

Wiring mode: Plastic sealing cable box header, iron hood lead

Body cast steel (WCB), stainless steel (304, 316.316L)

Pilot solenoid valve of working principle:

Normally closed: when the coil is energized, the pilot spool suction, pilot hole open, the valve chamber pressure relief, the piston by the lower chamber media pressure to push, the solenoid valve open; When the coil is off, the pilot spool is reset by the spring, the pilot hole is closed, the valve chamber is pressurized by the piston throttle hole and the thrust of the return spring, the solenoid valve is closed.

Comments:

1, if the fluid contains impurities, solenoid valve inlet must be installed filter valve (30 — 80 mesh/inch), and no solidification and crystallization phenomenon.

2, solenoid valve installation direction unlimited. (S-horizontal installation, C-vertical installation)

3. The above parameters shall be selected according to the requirements of working conditions.

Please specify the model, nominal size, actual working pressure, working medium, working pressure difference, medium temperature, power supply voltage and power, medium viscosity.