MCH-3-1/8

What does this solenoid valve do?

This unit is a directly actuated 3/2-way solenoid valve designed to control compressed air in pneumatic systems. It is a normally closed, single-solenoid valve, which means airflow is blocked in its de-energized state and changes over when the coil is energized.

What type of media is it designed for?

It is intended for compressed air. The published specification states compressed air to ISO 8573-1:2010 [7:4:4], making it suitable for general pneumatic duty where the air quality matches that classification.

What is the operating pressure range?

The valve is rated for an operating pressure range of 0 to 7 bar. This allows it to be used in low-pressure and standard industrial pneumatic applications within that range.

Is this valve normally open or normally closed?

It is a normally closed version. In practical terms, the MCH-3-1/8 remains closed until electrical actuation changes the valve state.

What are the pneumatic connection sizes?

Ports 1, 2, and 3 use G1/8 pneumatic connections. This makes the valve suitable for systems already built around G1/8 threaded pipework and fittings.

What is the nominal flow rate?

The standard nominal flow rate is 160 l/min. This gives a useful indication of the valve’s capacity for compact pneumatic circuits where controlled airflow is required.

How is the valve mounted?

This model is designed for through-hole mounting. That makes it straightforward to secure onto equipment panels or machine structures where a simple mechanical fixing method is preferred.

Does it have a manual override?

Yes. The valve includes a detenting manual override, which can be useful during setup, commissioning, or functional checks when electrical actuation is not being used.

What is the protection rating?

The valve has an IP65 protection rating. This provides a good level of protection against dust ingress and water jets in typical industrial environments when properly installed.

What are the ambient and media temperature limits?

The ambient temperature range is -5 to +40 °C, while the medium temperature range is -10 to +60 °C. These limits should be considered when selecting the valve for the application environment and the air system conditions.

Is the valve suitable for continuous energization?

The duty cycle is rated at 100 percent. However, the published data also notes that up to 5.5 bar, 100 percent duty cycle is permissible, while in the 5.5 to 7 bar range the permissible duty cycle is reduced to 40 percent.

Is the flow direction reversible?

No. This is a non-reversible valve, so it should be installed in the intended direction of flow shown by the valve design and porting arrangement.

Can it be used for vacuum applications?

No. The specification states that vacuum operation is not possible, so it should be selected only for compressed air duty within its stated pressure range.

What electrical voltage options are associated with this valve design?

The valve series is listed with a wide range of coil voltage options, including DC and AC variants such as 12 V DC, 24 V DC, 42 V DC, 96 V DC, 110 V DC, 220 V DC, 240 V DC, and AC options including 12 V, 24 V, 42 V, 48 V, 110 V, 120 V, 220 V, 240 V, and 380 V depending on frequency. Buyers should always confirm the exact coil voltage required for the specific application.

What kind of valve construction does it use?

It uses a poppet valve design with spring return and a soft sealing principle. This combination is often chosen for compact pneumatic switching where direct actuation and straightforward operation are important.