Three-way control valve
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I would like to ask everyone: what is the difference between the two three-way valves in the diagram below? Why do the arrows point in different directions? Both of them are used to connect to the inlet and outlet of heat exchangers, but they are not part of the same heat exchanger. Also, why is there an electromagnetic valve attached to one of the three-way valves?
The same. Solenoid valves are generally used for two-position on/off cutting.
The image above shows the straight-through type, while the one below shows the corner type, which is generally used for high pressures
I understand that: 1. Both are two-in-one, meaning the two fluids A and B combine and flow in the AB direction. 2. Both three-way valves are manually operated valves, and they regulate different fluids: one regulates fluid A and the other regulates fluid B. 3. Those equipped with solenoid valves are interlock actuators; when an interlock signal is received, the valve opens, allowing fluid B to flow in the AB direction, while fluid A is blocked.