Two-Way Solenoid Valves

Below are descriptions and diagrams of 2-way and 3-way solenoid valves.

Two-Way Normally Closed Solenoid Valve
Two-Way Normally Open Solenoid Valve

In 2-way normally-closed electric solenoid valves, the pressure flow from one port to the other is blocked until the power is turned on and the valve becomes energized. Powering on then allows the media to flow freely through the valve. Alternatively, in 2-way normally-open valves, pressure flows from one port to the other when the power is off and the valve is de-energized. Switch on the normally-open solenoid valve and flow ceases.


A two-way valve typically functions as a shut-off (NC) valve having a single inlet and a single outlet port. Regardless of the operation (NC/NO), the media enters the inlet passes through the orifice, and out of the outlet.

Two way normally closedTwo way normally open

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