Precautions for Selection of Solenoid Valve

1： Applicability

The fluid in the pipeline must be consistent with the medium calibrated in the selected solenoid valve series model, and the fluid temperature must be less than the calibrated temperature of the selected solenoid valve.

The allowable liquid viscosity of solenoid valve is generally below 20CST, and it shall be noted if it is greater than 20CST.

When the working differential pressure and the maximum differential pressure of the pipeline are less than 0.04MPa, such as ZS, 2W, ZQDF, ZCM series and other direct acting and multi-step direct acting types shall be selected; When the minimum working pressure difference is greater than 0.04MPa, pilot operated (differential pressure) solenoid valve can be selected; The maximum working differential pressure shall be less than the maximum calibration pressure of the solenoid valve; Generally, solenoid valves work in a one-way way, so pay attention to whether there is a back pressure difference. If there is a check valve, install it.

When the fluid cleanliness is not high, a filter should be installed in front of the solenoid valve. Generally, the solenoid valve requires a better cleanliness of the medium.

Pay attention to the flow diameter and nozzle diameter; Generally, the solenoid valve is only controlled by two positions of switch; If conditions permit, please install bypass pipe to facilitate maintenance; In case of water hammer, the opening and closing time adjustment of solenoid valve shall be customized.

Pay attention to the influence of ambient temperature on the solenoid valve

The power supply current and power consumption shall be selected according to the output capacity. The power supply voltage is generally allowed to be about ± 10%. It must be noted that the VA value is high during AC starting.

2、 Reliability solenoid valve is divided into two types: normally closed and normally open; Normally closed type is selected, which is powered on and powered off; However, when the opening time is long and the closing time is short, the normally open type should be selected.

For life test, the factory is generally a type test item. To be exact, there is no professional standard for solenoid valves in China, so it is prudent to select solenoid valve manufacturers.

When the action time is very short and the frequency is high, the direct action type is generally selected, and the fast series is selected for large caliber.

3、 Security

Generally, the solenoid valve is not waterproof. If conditions do not permit, please select the waterproof type, which can be customized by the factory.

The maximum calibrated nominal pressure of the solenoid valve must exceed the maximum pressure in the pipeline, otherwise, the service life will be shortened or other accidents will occur.

All stainless steel type shall be used for corrosive liquid, and plastic king (SLF) solenoid valve shall be used for strong corrosive liquid.

Corresponding explosion-proof products must be selected for explosive environment.

4、 Economy

There are many solenoid valves that can be used universally, but the most economical products should be selected on the basis of meeting the above three points.

Yuyao Xinsheng Solenoid Valve Co.,Ltd. It is a Solenoid Valve Manufacturer, as well as Water Rotameter and other products. Welcome to our official website.