How does the 2/2 Ways Solenoid Valve control the flow of fluid?

The 2/2 Ways Solenoid Valve  is an automatic control device commonly used in fluid control systems, which can realize the on-off control of fluids through electrical signals. It plays a vital role in many industrial applications, especially in the control of gas, liquid and steam. In order to better understand how this valve works, we need to analyze it in detail from the aspects of valve structure, working principle and control method.

1. Structure of 2/2 Ways Solenoid Valve
The "2/2" in the name of the 2/2-way solenoid valve represents the two ports and two working states of the valve. It has two ports, an inlet and an outlet, usually marked as inlet (Inlet) and outlet (Outlet) respectively. In its internal structure, it usually contains a solenoid coil, a valve body and a movable valve core or valve seat.

Solenoid coil: When current passes through the coil, the coil generates a magnetic field, which pushes the valve core to move.
Valve core: The valve core is a key component for controlling the flow of fluid. Its movement determines whether the fluid can pass through the valve. The two states of the valve core determine whether the valve is on or off.
Valve body: The valve body is the outer shell of the valve, which is responsible for accommodating the valve core, valve seat and other components, and connecting the pipeline to realize the input and output of the fluid.
2. Working principle
The working principle of the 2/2-way solenoid valve is based on the action of electromagnetic force and spring. The movement of the valve core is realized by controlling the power on and off of the electromagnetic coil, thereby controlling the on and off of the fluid.

Power-on state: When the electromagnetic coil is energized, the coil generates a magnetic field, attracting the valve core to lift or push it off the valve seat. At this time, the fluid can pass through the valve from the inlet to the outlet to realize the flow of the fluid.
Power-off state: When the electromagnetic coil is de-energized, the magnetic field disappears, and the restoring force of the spring automatically resets the valve core, seals the valve seat, and cuts off the passage of the fluid, thereby realizing the cut-off of the fluid.
During the working process, the two positions of the valve core: open and closed, are determined by the control of the electromagnetic coil. Simply put, the working state of the solenoid valve depends entirely on whether the electromagnetic coil is activated, and the movement of the valve core determines whether the fluid can pass through the valve.

3. Control the on-off of fluid
The 2/2-way solenoid valve adjusts the on-off of fluid by controlling the opening and closing of the valve core. It is suitable for applications that require rapid response and precise control. Specifically, this valve can control the flow of fluid, and usually has the following working modes:

Normally Closed (NC): When the electromagnetic coil is not energized, the valve core is kept closed by spring force and the fluid is cut off. When the electromagnetic coil is energized, the magnetic force acts on the valve core to open it and the fluid can flow.

Normally Open (NO): When the electromagnetic coil is not energized, the valve core is in an open state and the fluid can flow freely. When the electromagnetic coil is energized, the valve core is attracted to the closed position by magnetic force to cut off the flow of fluid.

This type of valve is widely used in fluid control, automation systems, pneumatic systems, hydraulic systems and other fields due to its simple structure, fast response speed and low cost.

4. Application scenarios
2/2-way solenoid valves are usually used in the following application scenarios:

Gas and liquid flow control: In pneumatic systems or hydraulic systems, 2/2-way solenoid valves are used to control the flow of gas or liquid. Common applications include air compressor systems, hydraulic equipment, gas pipelines, etc.
Automation control systems: In production lines or automation equipment, 2/2-way solenoid valves are used to control the on and off of fluids, thereby regulating the fluid supply in the production process and ensuring the normal operation of the equipment.
Water treatment and purification: In water treatment systems, solenoid valves are used to control the opening and closing of water flows for precise regulation and distribution of water flows.
Laboratory and medical equipment: In some precision equipment, such as laboratory analytical instruments and medical equipment, 2/2-way solenoid valves are often used to precisely control trace fluids.
5. Choose a suitable 2/2-way solenoid valve
When choosing a suitable 2/2-way solenoid valve, you need to consider multiple factors, including fluid type, working pressure, working temperature, solenoid valve size, material, and control voltage.

Fluid type: For different fluids (such as gas, liquid or steam), you need to choose a solenoid valve with suitable materials and sealing materials. For example, for corrosive liquids, you should choose a solenoid valve made of corrosion-resistant materials (such as stainless steel or plastic).
Working pressure and temperature: Different working environments require solenoid valves to withstand certain pressures and temperatures. Choose the right valve according to the temperature and working pressure of the fluid to avoid leakage or damage.
Power supply requirements: 2/2-way solenoid valves can have a variety of power supply options, including 24V DC, 220V AC, etc. You need to choose the right solenoid valve according to the voltage of the control system.