Festo 5/2 Monostable Pushbutton Valve - G1/8

The VHEF pushbutton valve is a compact, manually actuated 5/2 monostable pneumatic valve with a st...

Best current price£93.45from Tameson UK

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Tameson UKFesto 5/2 Monostable Pushbutton Valve G1/8 750L/Min -0.95 - 10Bar/-14 - 145Psi - 5299709
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£93.45
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RS Components Ltd- UKFesto Push Button 5/2 Pneumatic Manual Control Valve VHEF Series, G 1/8, 1/8in, 5299709
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Product Information

Full details

The Festo VHEF-P-M52-M-G18 is a robust, manually actuated 5/2 monostable pneumatic valve designed for reliable control in industrial automation. It is ideal for applications requiring precise manual intervention and reverse operation, offering a high nominal flow rate of 750 l/min. A key benefit is its durable aluminum alloy housing and piston slide technology, ensuring longevity. However, its suitability is primarily for pneumatic systems, and it may not be compatible with non-standard pneumatic pressures.

All features

Model Part NumberVHEF-P-M52-M-G18
BrandFesto

Extended Product Information

FAQs

What is the primary function of a 5/2 monostable valve?

A 5/2 monostable valve has five ports and two positions. 'Monostable' means it has one stable state, which is the one it returns to when the actuating force (in this case, the pushbutton) is released. It's commonly used to control single-acting pneumatic actuators or for pilot-valve applications.

What does a nominal flow rate of 750 l/min mean?

This indicates the volume of air the valve can pass per minute under standard test conditions. A higher flow rate means the valve can supply air more quickly to pneumatic devices, leading to faster operation.

Can this valve be used with hydraulic systems?

No, this valve is specifically designed for pneumatic (compressed air) systems and is not compatible with hydraulic fluids.

What is the significance of the '-0.95' in the pressure range?

The '-0.95 bar' indicates that the valve can operate under vacuum conditions, making it suitable for applications that require vacuum generation or control.

Is lubrication required for this valve?

The Festo VHEF valve is designed to operate reliably with either lubricated or non-lubricated compressed air, offering flexibility in system maintenance.

How do I know if G1/8 connections are compatible with my system?

G1/8 refers to a standardized BSPP thread size. You will need fittings with a corresponding G1/8 thread to connect your pneumatic lines to this valve.

What is the warranty period for this valve?

Please refer to the official Festo product documentation or your point of purchase for specific warranty information, as it can vary by region and supplier.

Troubleshooting

Valve not switching states

Check for adequate air pressure supply. Ensure the pushbutton is being fully actuated. Inspect for internal blockages or damage.

Air leaks from exhaust ports

Verify that all pneumatic connections are securely tightened. Inspect seals for wear or damage. Ensure the valve is within its specified operating pressure range.

Slow actuator response

Check for restrictions or leaks in the pneumatic lines. Ensure the valve's flow rate is sufficient for the actuator. Clean any debris from the valve's air passages.

Pushbutton is difficult to press

Inspect the pushbutton mechanism for obstruction or damage. Ensure the valve is not subjected to excessive external forces or misalignment.

Pros and Cons

Pros

  • Durable metal housing ensures longevity in industrial environments.
  • High flow rate (750 l/min) supports demanding pneumatic applications.
  • Compact design with G1/8 connections allows for easy integration.
  • Ergonomic design requires minimal actuating force.
  • Reliable performance across a wide pressure range (-0.95 to 10 bar).

Cons

  • Manual actuation limits automated control possibilities.
  • Primarily designed for pneumatic systems, not for other fluid types.
  • Requires manual reset, which might not be suitable for all automation tasks.
  • Thread standard is BSPP (G1/8), requiring compatible fittings.
  • Operating temperature range is limited to -10°C to +60°C.

Setup, Compatibility & Care

Setup:

  1. Mounting: Secure the valve in the desired location, ensuring it is accessible for manual operation.
  2. Pneumatic Connections: Connect the appropriate G1/8 pneumatic lines to the valve ports. Ensure all connections are clean and securely tightened to prevent leaks.
  3. Piping: Connect the compressed air supply to the pressure port and the output lines to the actuator ports.

Compatibility:

  • Pressure: Compatible with compressed air systems operating between -0.95 and 10 bar.
  • Temperature: Suitable for ambient temperatures between -10°C and +60°C.
  • Connections: Features standard G1/8 (BSPP) pneumatic thread connections.

Care:

  • Cleaning: Regularly inspect the valve for dirt and debris. Clean the exterior with a dry or slightly damp cloth. Avoid using solvents or abrasive cleaners.
  • Lubrication: This valve is designed for lubricated or non-lubricated air. If using lubricated air, ensure the lubricant is compatible with the valve's materials.
  • Inspection: Periodically check pneumatic connections for leaks and ensure the pushbutton mechanism operates smoothly.

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