A 2-way solenoid valve is an electromechanically operated valve that controls the flow of air or liquid. It operates across pressure differentials and contains a retainer, spring, solenoid, and metal rod. It has low electricity consumption and is used in various industries for controlling hot water, low-pressure steam, air, and non-corrosive fluids.
A 2-way solenoid is a type of electromechanically operated valve that allows air or liquid to flow through it when it is electrically turned on or off. A solenoid valve in general controls the flow of gas or liquid in a controlled way and is used in a variety of industries, such as power, gas, process and medical. There are many different types of solenoid valves, classified by the number of connections and the valve orifices. A 2 port solenoid valve has only one orifice and allows fluid to flow through its individual inlet and outlet ports.
Used in a number of applications, such as air cannons, sprinklers, air blasts and industrial applications, 2 port solenoid valves operate across pressure differentials between the inlet and outlet. The solenoid consists of a coil of wire tightly bonded around a metal core. The coil modulates the valve by converting electrical energy into magnetic energy: no mechanical device forces liquid or gaseous media through the valve. When energy flows through the solenoid, it creates a magnetic field which affects the valve, causing it to open or close. It can be considered normally open or normally closed.
The main components of a 2-way solenoid consist of a retainer, spring, solenoid and metal rod. The gas or fluid enters the solenoid through the inlet port, which is typically closed with the aid of the plug. The cap effectively seals the valve and is controlled by a metal spring. The spring is attached to a metal rod with a pin near the solenoid. As energy passes through the coil, the resulting magnetic field pulls the pin, which pulls the cap back and allows fluid to enter the valve.
When the power is cut off, the plug snaps back into place, re-sealing the inlet. This type of solenoid valve contains plugs at both ends of the valve, allowing the inlet and outlet ports to be interchangeable: fluid can enter or leave the 2-way solenoid from either port. The pressure difference between the inlet and outlet is critical to the flow of fluid through the valve. Typically, the inlet port has higher pressure; equal pressure between the ports interrupts the flow of substances. The pressure difference can be easily controlled and this controls the direction of fluid flow.
One of the benefits of using 2-way solenoids is their very low electricity consumption. There is less power consumption due to the coil in the solenoid having a low wattage. The mechanical construction is compact and economical, and the valve has a leak-proof internal structure when manufactured correctly. Engineers use it to control the flow of hot water, low pressure steam, air and non-corrosive fluids. In good environmental conditions, a 2-way solenoid has a long life, allowing for a high flow capacity and is well suited to demanding gas or fluid control applications.
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