Festo 5/2 Bistable Pushbutton Valve - G1/8 - VHEF-P-B52-G18

The VHEF pushbutton valve is a compact, bistable 5/2 pneumatic control device with a standard nomi...

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Tameson UKFesto 5/2 Bistable Pushbutton Valve G1/8 750L/Min -0.95 - 10Bar/-14 - 145Psi - 5299710
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Product Information

Full details

The Festo VHEF-P-B52-G18 is a compact, bistable 5/2 pneumatic pushbutton valve designed for industrial automation. It offers reliable pneumatic control with a high flow rate and robust metal construction, ideal for applications requiring manual actuation. A key benefit is its durable piston slide and disc seat technology, ensuring longevity, though users should note its specific G1/8 connection size.

All features

Model Part NumberVHEF-P-B52-G18
BrandFesto

Extended Product Information

FAQs

What type of pneumatic system is this valve for?

This is a 5/2 bistable pneumatic control valve, suitable for single-acting or double-acting pneumatic actuators, controlled manually.

What is the connection size for this valve?

The valve features G1/8 connections, conforming to the BSPP thread standard.

What is the maximum operating pressure?

The maximum operating pressure for this valve is 10 bar.

Can this valve be used in extreme temperatures?

The valve is designed for an operating temperature range of -10°C to +60°C. Exposure outside this range may affect performance or damage the unit.

What does 'bistable' mean in this context?

Bistable means the valve will maintain its last position (state) after the actuating force is removed. It requires a new signal to change states.

How do I clean the valve?

The Aluminium Alloy body can be cleaned with a soft, slightly damp cloth. Avoid using harsh chemicals or abrasive cleaning materials.

What is the nominal flow rate?

The nominal flow rate is 750 liters per minute (l/min).

Troubleshooting

Valve not switching states

Verify air supply pressure is within the -0.95 to 10 bar range. Ensure the manual button is fully engaged and not obstructed. Check for any internal blockages if physical damage is suspected.

Low flow rate or slow actuator response

Check for leaks at the G1/8 connections. Ensure the air supply line is adequate and not restricted. Clean any filters in the compressed air system.

Valve leaks air

Inspect the seals and the piston slide area. Ensure connections are tight. If leaks persist, the internal seals may be worn and the valve may need replacement.

Button is difficult to press

Check for external obstructions or damage to the button mechanism. Ensure the valve is not subjected to excessive external forces. If internal, the valve may require servicing or replacement.

Pros and Cons

Pros

  • Durable Aluminium Alloy body for longevity.
  • High nominal flow rate (750 l/min) for efficient operation.
  • Compact 20mm width saves valuable control panel space.
  • Suitable for a wide operating pressure range (-0.95 to 10 bar).
  • Simple manual actuation for ease of use.
  • Bistable design allows for memory of the last state.

Cons

  • Requires manual intervention for switching states.
  • Specific G1/8 connection size may limit compatibility with non-standard fittings.
  • Not suitable for automated control without additional piloting.
  • Operating temperature range is limited to -10°C to +60°C.

Setup, Compatibility & Care

Setup:

  1. Ensure the air supply is turned off and depressurized.
  2. Connect pneumatic lines to the G1/8 ports using appropriate fittings.
  3. Mount the valve securely in its intended location.
  4. Apply air pressure within the specified range (-0.95 to 10 bar).

Compatibility:

  • This valve is designed for pneumatic systems and requires a clean, dry, or lubricated compressed air supply.
  • It is compatible with standard G1/8 BSPP threaded fittings.
  • Ensure any connected actuators are rated for the flow and pressure provided.

Care:

  • Regularly inspect for leaks in pneumatic connections.
  • The Aluminium Alloy housing can be wiped with a slightly damp cloth; avoid abrasive cleaners.
  • Ensure the operating environment stays within the -10°C to +60°C temperature range.

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