Electric Valve
Troubleshooting of the solenoid valve
The first situation does not work after powering solenoid valve.
Check the power wiring is bad, re-wiring and connectors for connection. Check whether the scope of supply voltage, adjust the scope of induced normal position. Coil is loose soldering, re-welding. Coil short circuit, replace the coil. Working pressure is not appropriate, adjust pressure, or proportional valve replacement. Fluid temperature is too high, commensurate with the electromagnetic valve replacement. Impurities to the main valve spool and the moving core card dead, cleaning, sealing any damaged seals should be replaced and installed filters. Too much liquid viscosity, the frequency is too high, and life has come to replace the product.
The second solenoid valve is not closed. Moving the main spool or iron core of the seal is damaged, replace the seals. Fluid temperature, viscosity is too high, replace the corresponding solenoid valve. Impurities into the solenoid valve spool or moving core products, cleaning. Spring has come to life or deformed, replace. Throttle Kong Pingheng hole plug, and timely cleaning. Operating frequency is too high, or life has come to re-election of products or product.
There are a number of other cases. Internal leak, check the seal is damaged, the spring assembly is bad. External leakage, loose joints or seals have been broken, the screws or replace the seals. When there is noise power, the head of the solid pieces of loose, tighten. Voltage fluctuations are not allowed within the adjust voltage. Core pull impurities or uneven surface, and timely cleaning or replacement.
What solenoid valve used for? Solenoid valve for liquid and gas pipeline switch control, are two DO control. Generally used for small pipe control. In addition, the amount of electromagnetic valve can only be used as a switch, is the DO control, control can only be used for small pipes, and less common in DN50 pipes up very much.
Solenoid valve through the coil drive, only on or off, switch action time solenoid valves is short. Valve flow coefficient generally small, and the work pressure difference is small. Such as the general 25-caliber electromagnetic valve flow coefficient than the diameter of the electric valve 15 is much smaller. Electromagnetic valve drive through the electromagnetic coil voltage shock more easily damaged. Equivalent to the role switch is on and off two roles. General power to reset the solenoid valve, electric valve to reset this feature requires additional installation. Solenoid valve is suitable to process some special requirements, such as leakage, fluid media or special, more expensive.
Solenoid valve sealing material There are three most commonly used. Nitrile butadiene rubber and acrylonitrile butadiene is obtained by the emulsion, nitrile rubber emulsion production of mainly low-temperature, oil resistance, excellent wear resistance than the high heat resistance, good adhesive power. The disadvantage is poor low temperature resistance, ozone resistance and poor, poor electrical performance, lower elasticity.
In addition, it has good water resistance, air tightness and excellent solenoid valves bonding properties. Oil is widely used in manufacturing various rubber products, various oil washers, gaskets, casing, flexible packaging, soft tube, dyeing roller, plastic materials, cable, automotive, aviation, petroleum, copying and other industries to become indispensable less elastic material.
NBR has excellent oil resistance, oil solenoid valves resistance after its polysulfide rubber and fluorine rubber, and has the wear resistance and air tightness. NBR weakness is impatience ozone and aromatic, halogenated hydrocarbons, ketones and esters, solvents, insulation materials do not. Nitrile rubber is mainly used for production of oil products, such as the oil pipe, tape, rubber diaphragm and a large oil sac, etc., used in the production of molded products, various types of oil, such as the O-ring, oil seal, rubber cups, diaphragm, valve, corrugated tubes, etc., are also used to make blankets and wear parts.
About the Author
DSN Animation: What is a Solenoid Valve?
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