Festo 3/2 Pneumatic Manual Control Valve - G1/8 - VHEF-LT-M32-M-G18

The Festo VHEF-LT-M32-M-G18 is a compact 3/2 pneumatic valve designed for manual actuation. Featur...

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Tameson UKFesto 3/2 No/Nc Monostable Finger Lever Valve G1/8 750L/Min -0.95 - 10Bar/-14 - 145Psi - 4500009
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Product Information

Full details

The Festo VHEF-LT-M32-M-G18 is a professional-grade 3/2-way pneumatic valve designed for industrial technicians and automation engineers who require reliable, low-force manual control over pneumatic lines. It excels in applications demanding precise, manual switching through an ergonomic finger lever; however, users should note that as a monostable valve, it requires constant engagement to remain in the actuated state.

All features

Model Part NumberVHEF-LT-M32-M-G18
BrandFesto

Extended Product Information

FAQs

What does 3/2-way mean?

It means the valve has 3 ports and 2 switching positions, allowing it to supply, block, and vent an air line.

Is this valve suitable for vacuum applications?

Yes, it is rated for pressures as low as -0.95 bar, making it compatible with vacuum systems.

Does this valve stay in position when toggled?

No, it is a monostable valve, meaning it returns to its default position as soon as you release the lever.

What is the port thread size?

The ports are standard G1/8 threads.

How do I mount this valve?

The valve housing features integrated mounting holes suitable for surface-mounting to a panel or machine frame.

Troubleshooting

Air leaking from the exhaust port while not actuated

Check for debris or contaminants inside the valve body; consider installing a finer upstream air filter.

Stiff or unresponsive lever

Verify that there is no external mechanical binding on the lever and that the operating pressure does not exceed 10 bar.

System not responding to valve actuation

Ensure the supply lines are connected to the correct ports (Port 1 is supply, Port 2 is output, Port 3 is exhaust).

Pros and Cons

Pros

  • Durable piston slide design for long service life
  • Ergonomic lever reduces operator fatigue
  • Wide operating pressure range including vacuum
  • Compact footprint allows for tight installation configurations
  • Standard G1/8 ports ensure broad system compatibility

Cons

  • Requires constant manual pressure due to monostable design
  • Not intended for automated electrical remote control
  • May require additional mounting hardware depending on surface

Setup, Compatibility & Care

To install the valve, ensure that the G1/8 pneumatic lines are cleaned of debris before threading them into the valve ports to prevent contamination of the internal seals. Use appropriate thread sealants if necessary, being careful not to obstruct the flow path. The valve should be mounted in a location that protects the lever from accidental contact to prevent unintended actuation. Maintenance is minimal; however, it is recommended to ensure the air supply is filtered and dry to extend the lifespan of the internal piston slide. Regularly inspect the lever for smooth movement and ensure the exhaust port remains clear of obstructions for proper venting.

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