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Precautions For Cleaning Hydraulic Valves

Ningbo E.H Hydraulic Co.,Ltd | Updated: Jul 10, 2017


Hydraulic valve is a kind of pressure oil operation automation element, it is controlled by the pressure oil of valve, usually with the solenoid valve combination, can be used for long-distance control of hydropower station oil, gas, water pipe system. Often used for clamping, control, lubrication and other oil circuits. There are direct type and pilot type of the division, the use of the pilot.

According to the control Method classification: manual, electric control, liquid control

Classification by Function: Flow valve (throttle valve, speed control valve, shunt set-flow valve), pressure valve (overflow valve, decompression valve, sequential valve, unloading valve), directional valve (solenoid directional valve, manual reversing Valve, valve, hydraulic control valve)

According to the mode of installation: plate valve, pipe valve, stacking valve, threaded cartridge valve, Hydraulic Valves cover valve

According to the mode of operation: manual valve, motor valve, electric valve, hydraulic valve, electro-hydraulic valve and so on.

Cleaning method:

(1) Disassembly.

Although the hydraulic valve between the various parts for the bolt connection, but the hydraulic valve design is oriented to the demolition, Hydraulic Valves if there is no special equipment or professional technology, forced demolition is likely to cause hydraulic valve damage. Therefore, prior to demolition to master the hydraulic valve structure and the link between the parts, disassembly record the location between the parts.

(2) Check cleaning.

Check the body, valve core and other parts of the dirt deposition, without damage to the working surface of the premise, with cotton yarn, brush, Hydraulic Valves non-metallic scraper to remove the concentration of dirt.

(3) Coarse wash.

The valve body, valve core and other parts placed in the cleaning box tray, heated soaking, compressed air into the bottom of the cleaning trough, through the stirring role of bubbles, the cleaning of residual dirt, conditional can be used ultrasonic cleaning.

(4) fine washing.

The cleaning liquid is used for high pressure location cleaning, and finally, hot air drying. Qualified enterprises can use existing cleaning agents, Hydraulic Valves and individual occasions can also use organic detergents such as diesel and petrol.

(5) Assembly.

According to the assembly diagram of the hydraulic valve or the assembly of the parts recorded during disassembly, be careful when assembling and do not touch parts. The original sealing material is easily damaged during disassembly and should be replaced at assembly time.

Cleaning considerations:

(1) for the hydraulic valve inside the deposition time is long, pastes the solid dirt, cleans does not scratch the match surface.

(2) Pay attention to safety when heating. Hydraulic Valves Some inorganic cleaning liquid has toxicity, the heating volatilization may cause the human to be poisoned, should use cautiously, the organic cleaning fluid is flammable, the attention fire prevention.

(3) When choosing cleaning liquid, pay attention to its corrosivity and avoid corrosion to the valve body.

(4) After cleaning the parts to be careful to save, to avoid corrosion or pollution (5) assembled hydraulic valve to be qualified after the test can be put into use.


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