The solenoid valves enable users to convert electrical energy into mechanical energy. The 2 major types of solenoid valves are direct-acting valves and pilot-operated valves. The two types of valves are different in their working principle, as the direct proportional solenoid valve working is no pressure differential or not pressure sensitive. On the other hand, the pilot-operated valves are the pressure differential and are sensitive to pressure change.
You can set the pressure at which the pilot-operated valves are going to close and open automatically. The direct-acting solenoid flow control valves are directly closed and opened by the control unit. When you are going to purchase the solenoid valves choose according to your requirements. You need to choose relative to your particular requirement, as the pilot-operated solenoid valves are costly as compared to the direct-operating valves.
In this article, we are discussing the two major types of solenoid valves and the difference in the proportional solenoid valve working principle.
Direct-acting Solenoid Valves:
The Direct-acting Solenoid Valves open and close directly by the magnetic action of the coil. The solenoid pneumatic flow control valves pushed the coil to open the small orifice when the electric current passes through the valves. The solenoid air flow control valve flow control valve needs full power to operate and the normally open or normally closed depends on the application.
The proportional solenoid valve working pushed the coil to retract to allow the flow valve of the liquid through the valve. The direct-acting valves are larger in size as compared to the pilot-operated valves. The solenoid coil is typically larger in a direct-acting valve, compared to a pilot-operated valve.
Pilot-Operated Solenoid Valves:
The Pilot-operated proportional solenoid valve working depends on the pressure of the liquid through the valves. The Pilot-operated proportional use the pressure of the flowing material to open the valves. This is the main reason a small coil is used to open and close the valves, as the pressure of the liquid is also used to open and close. You can save a lot of energy when using pilot-operated valves.
The pilot-operated valves can be a good option to save electrical power and it can be a power-saving option. If you want to use less power to operate the solenoid valves, then the pilot is better. On the other hand, you need proportional pressure inside the valves. The Pilot-operated valves are automatic and are going to open and close the certain change in pressure. We also recall these valves as pressure differential valves, as these are sensitive to pressure change.
The two types of proportional solenoid valves are used relative to their functionality. If you have low pressure of the liquid then it is better to use the direct-acting solenoid valves. If there is relative pressure of the liquid is available then the pilot-operated valves are a better option as these proportional solenoid valve working need less electrical power. These valves are cost-saving and can reduce the overall cost of electricity, but you need the relative pressure of the liquid inside the piping network