Solenoid valve hydraulic SV12-20 one-way pressure retaining valve

The hydraulic check valve can't be opened in reverse: when the hydraulic oil doesn't flow, the check valve on either side is closed; When the oil flows out, both valves are opened at the same time, and there are several reasons for this, as follows:

1. There is slight wear between the mating surfaces of the valve core and the valve body, and the guide part becomes conical;

1. The one-way valve spring loses elasticity;

2. The one-way throttle valve core is stuck by impurities;

3, check valve hole and sealing surface wear is too large, resulting in the one-way valve closed lax.

The above points are the reasons why the hydraulic one-way valve can't be opened reversely. When we encounter this situation, we can eliminate it one by one. If you have any questions, you can contact us.

One-way throttle valve is a kind of hydraulic element operated by pressure, which only allows fluid to flow in one direction. It is often used to control direction change or load off fluid in hydraulic system. Although this kind of valve belongs to high-precision components, there will still be some faults in long-term use, so we need to do a good job of cleaning and maintenance in daily life. For details, please refer to the following points:

1. For the one-way throttle valve, it should be avoided to use it under too high or too low pressure. If it needs to be stored for a long time, it is best to seal the hydraulic one-way valve and the hydraulic motor with a sealing device to prevent liquid from leaking or air from entering the liquid cylinder;

2. Always check the quantity, model and quality of hydraulic oil;

3. Regularly remove the sundries in the hydraulic oil tank to prevent water and sediment from entering the oil tank;

4. The one-way throttle valve is the main component in the hydraulic circuit, and its function is to ensure that the medium is transported in the required flow direction without interruption due to pipeline resistance.

5. For the one-way throttle valve, some sundries and metal chips often enter the inside of the valve body, so when cleaning it, put it in water and clean it with a brush or wool. Do not directly use the steel ball to scrape the valve body, which will easily damage the one-way valve.