A pilot type solenoid valve
is a type of control valve that uses a small amount of fluid pressure to control the flow of fluid through the valve. This type of solenoid valve is also known as a pilot-operated solenoid valve.
The pilot type solenoid valve consists of two main components: the main valve body and a smaller pilot valve. The pilot valve is connected to the main valve body and it controls the flow of fluid through the main valve. When the solenoid coil is energized, the pilot valve opens, which in turn opens the main valve and allows fluid to flow through the piping system. When the solenoid coil is de-energized, the pilot valve closes, which closes the main valve and stops the flow of fluid.
Pilot type solenoid valves are commonly used in applications where the fluid pressure is too high for a direct acting solenoid valve to control on its own. They are also used in applications where a precise control of fluid flow is required, such as in process control systems.
Key advantages of pilot type solenoid valves:
High fluid pressure control: Pilot type solenoid valves
are designed to control high fluid pressures, which makes them ideal for use in hydraulic systems or high-pressure water treatment systems.
Precise control: The use of a pilot valve in a pilot type solenoid valve allows for precise control of fluid flow, which is important in applications where accurate flow control is required.
Reliable operation: Pilot type solenoid valves are known for their reliable operation, even in harsh environments and high temperatures and pressures.
Main components of pilot type solenoid valve:
Main valve body: This is the main component of the solenoid valve, and it controls the flow of fluid through the piping system. The main valve body is typically made of metal and is designed to withstand the pressure and temperature of the fluid flowing through the valve.
Solenoid coil: The solenoid coil is the electromagnet that provides the energy needed to control the flow of fluid. When the solenoid coil is energized, it creates a magnetic field that operates the pilot valve.
Pilot valve: The pilot valve is a smaller valve that controls the flow of fluid through the main valve body. The pilot valve is connected to the main valve body and it is operated by the magnetic field created by the solenoid coil.
Armature: The armature is the component that moves in response to the magnetic field created by the solenoid coil. The armature is connected to the pilot valve and it opens and closes the pilot valve in response to changes in the magnetic field.
Valve stem: The valve stem connects the armature to the pilot valve and transmits the movement of the armature to the pilot valve. The valve stem is typically made of metal or a similar material that is strong enough to withstand the forces acting on the armature and the pilot valve.
Return spring: The return spring is used to return the armature and the pilot valve to their original positions when the solenoid coil is de-energized. The return spring is typically made of a durable material, such as stainless steel, that can withstand the repeated compression and expansion caused by the movement of the armature and the pilot valve.