The inlet safety return valve is a valve used to prevent the backflow of the medium. It is mainly composed of valve body, valve core, spring, sealing ring, etc.
The working principle of the inlet safety return valve is: when the medium flows from one side of the valve body, the valve core is pushed by the medium and moves upward, so that the sealing ring and the valve seat are sealed to prevent the medium from flowing back. When the flow direction of the medium stops, the action of the spring makes the valve core move downward, open the valve, and make the medium flow back.
The inlet safety return valve has the following advantages:
The structure is simple and easy to operate
Good sealing performance and high reliability;
Strong corrosion resistance and long service life.
Imported safety return valves are widely used in petroleum, chemical, metallurgy, electric power and other industries.
The following are the common types of inlet safety return valves:
Spring-loaded safety return valve: It is a commonly used type, which has the advantages of simple structure and convenient operation.
Float type safety return valve: it has the advantages of good sealing performance and high reliability.
Solenoid safety return valve: It has the advantages of flexible operation and high reliability.
The following points should be paid attention to when purchasing the imported safety return valve:
The appropriate model should be selected according to the type, pressure, temperature and other parameters of the medium.
The appropriate material should be selected according to the environment in which it will be used.
You should choose a brand with reliable quality.
The maintenance of the inlet safety return valve should pay attention to the following points:
The tightness of the valve should be checked regularly, and repaired in time if problems are found.
The valve should be cleaned regularly to prevent impurities from clogging.
The parts of the valve should be checked regularly, and replaced in time if damage is found.
Correct selection and use of inlet safety return valve can ensure the safe operation of the system.