Solenoid valve valve in use may be closed because of some external factors and so on, at this time how should we solve this problem? Electric proportional valve manufacturer Nuoneng Tai for you to answer the solenoid valve failure of the two reasons.

First: the influence of external factors, such as some gravel, dead leaves and branches, prevent the diaphragm from being completely sealed. After removing these obstacles, it is necessary to check whether there is damage to the diaphragm and accessories.

1. The inlet filter of the diaphragm chamber is blocked. This will prevent the flow of oil into the upper diaphragm chamber and will not generate enough oil pressure to close the diaphragm.

Second: solenoid valve rust itself, poor production and manufacturing, improper installation and maintenance, and so on.

2. Lift the flow control handle too high (maximum opening). This makes it possible for the diaphragm to hang high and not seal under low flow/pressure conditions.

3, the solenoid valve between the upper and lower body seal is not strict. Oil can easily seep out of it, which is also not conducive to generating enough pressure to close the diaphragm.

4. The solenoid valve is in the state of manual oil discharge. Commonly used (such as Nelson) solenoid valve has two manual operation modes (internal oil, external oil), the external oil is generally easy to identify, and the internal oil is not easy to detect for the general customer.

5, the diaphragm is perforated (only refers to the oil flow valve). Not enough pressure is generated in the upper diaphragm chamber to close the diaphragm. Check carefully and replace the diaphragm if necessary.

6, the solenoid valve installation direction is not correct. The direction of the arrow on the solenoid valve is the direction of oil flow.

Guangdong Nuoneng Tai Automation Technology Co., Ltd. is committed to providing excellent industrial pneumatic control components for customers at home and abroad. NNT has been focusing on product innovation, research and development, quality control, which also makes the peer has a good reputation. Noneng Tai - electric proportional valve manufacturer.