Solenoid valve symbols in fluid power diagramsįluid power drawings are crafted up by engineers to understand and analyze power units. More ports and switching states are possible. In each switching state, a different port is closed off.
A 3/2 way valve has three ports and two switching states. Normally closed (NC) or normally open (NO) determines if the valve is closed or open in a de-energized state. A 2/2 way valve has two pipe connections (inlet and outlet) and two switching states (open and closed).
The second number is the number of switching states. The first number indicates the number of connection ports. Valves are designated with two numbers, for example, a 2/2-way valve. View our online selection of solenoid valves!
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