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Switching valves
Switching valves are types of valves designed to switch the flow of fluids (liquids or gases) between different pathways in a system. Unlike proportional valves, which allow for variable control of flow or pressure, switching valves primarily function to route fluid from one line to another or to start and stop flow entirely. They are widely used in systems where precise control of flow direction or on/off control is needed.
Key characteristics of switching valves
1. On/Off functionality
Switching valves operate in a binary mode, either fully open or fully closed, directing fluid flow from one port to another without modulating the flow rate.
2. Multiple ports
These valves often have multiple ports (inlet and outlet) to allow for switching between different flow paths. For example, a 3-way valve might have one inlet and two possible outlets, switching between them as needed.
3. Actuation methods
Switching valves can be actuated by various methods including manual control, electric solenoids, pneumatic actuators, or hydraulic actuators, depending on the application requirements.
4. Types
2-Way Valves: Simple on/off valves with one inlet and one outlet.
3-Way Valves: Used to direct flow between two different outlets or to mix flows from two inlets.
4-Way Valves: Common in hydraulic and pneumatic systems, these valves control the direction of actuator motion (e.g., extending or retracting a cylinder).
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