What is the Difference Between a Purge Valve and Solenoid Valve?

In the field of construction machinery, purge valves and solenoid valves are two common components that play an important role in the control system. Although they are both related to the control of fluids or gases, there are differences in their functions and applications.

Differences in function

1.Function of Purge Valve:

Purge Valve are mainly used to control the flow of gases, liquids or mixtures to achieve the purpose of exhaust, drainage or sewage. In engineering machinery, Purge Valve are usually applied to deal with the flow of liquid or gas, for example, in wastewater treatment, sewage treatment, air purification and oil-water separation and other projects, Purge Valve are used to achieve discharge and treatment.

2.Function of solenoid valve:

Diesel solenoid valve is a kind of equipment working on the basis of electromagnetic principle, which opens or closes the valve by controlling the energization and de-energization of electromagnetic coil to control the flow of fluid or gas. In construction machinery, solenoid valves are mainly used to control the flow of fluids or gases, and are widely used in hydraulic systems, pneumatic systems and emission control systems. For example, a variable valve timing solenoid valve is a special type of solenoid valve used to control the opening and closing times of valves in an engine to optimize combustion efficiency and reduce emissions.

Principle of operation

1.Working principle of purification valve:

Purge Valve are mainly used to control the flow of gases, liquids or mixtures to realize the function of exhaust, drainage or sewage. In engineering machinery, the working principle of Purge Valve is usually realized by manually or automatically controlling the opening and closing of the valve to realize the discharge and treatment of fluids or gases. Different types of Purge Valve use different structures, such as rotary, push-pull, shut-off or control, to realize different control purposes.

2.Principle of operation of solenoid valve:

Solenoid valve is a kind of device working on the basis of electromagnetic principle, which opens or closes the valve by controlling the energization and de-energization of the electromagnetic coil to realize the control of fluid or gas. In construction machinery, the working principle of the solenoid valve is mainly through the electromagnetic coil energized and de-energized to control the opening and closing of the valve, so as to ensure the normal operation of diesel engine spare parts and other components. When the solenoid coil is energized, the magnetic field generated attracts the valve spool to open the valve; and when the solenoid coil is de-energized, the spool returns to its original position and the valve closes.

3.Comparison of working principle:

The working principle of purification valve is to realize the discharge and treatment of fluid or gas by manually or automatically controlling the switch of the valve, and its control is relatively simple, but it needs to be operated manually or rely on other automated control equipment. The working principle of the solenoid valve is to control the opening and closing of the valve through the energization and de-energization of the electromagnetic coil to realize precise fluid or gas control, which has the advantages of high degree of automation and fast response speed.

Field of application

1.The field of application of Purge Valve:

Purge Valve are mainly used to deal with the flow of gases, liquids or mixtures to realize the function of exhaust, drainage or sewage. In engineering machinery, the application field of Purge Valve mainly involves the discharge and treatment of fluids or gases. For example, in wastewater treatment, sewage treatment, air purification, oil-water separation and other projects, Purge Valve are widely used to control the discharge of fluids or gases to ensure the efficient operation of construction machinery in different environmental conditions.

2.Applicable fields of solenoid valves:

In the hydraulic system of engineering machinery, industrial equipment and automobiles, solenoid valves are used to control the flow and pressure of liquid to realize the motion control of hydraulic cylinder, valve control and other functions. In a variety of pneumatic equipment and production lines, solenoid valves are used to control the flow and pressure of gas, to realize the pneumatic cylinder, pneumatic valve switch and control. Meanwhile, solenoid valves are widely used in air-conditioning and refrigeration equipment for controlling the flow and pressure of refrigerant to realize cooling and heating functions.

Correctly selecting the right type of valve is crucial to the performance and operation of construction machinery. You can also consult with us in MyMROmarts for accessories, and we have a wide range of valves for sale, including hitachi solenoid valves, etc., so you are free to choose.

In practical applications, we need to consider the characteristics of Purge Valve and solenoid valves according to specific scenarios and control requirements, in order to meet the fluid control needs of different application scenarios. At the same time, continuous technological progress and innovation also provides more possibilities for the fluid control of construction machinery, we look forward to seeing the emergence of more efficient and intelligent control components in the future.