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Products / Valves / Over & Under Pressure Relief Valve

Over & Under Pressure Relief Valve

Pressure relief valve protecting silos, hoppers, and bins from overpressure and underpressure.

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// How It Works

Engineered for reliable pneumatic transfer.

The RULA Over Under Pressure Relief Valve safeguards silos, hoppers, and bins from overpressure and underpressure damage, such as vacuum collapse or pneumatic conveying overpressure. Adjustable via weights on sealing flaps (standard settings: +1.5 kPa and -1.5 kPa), it features rubber seals for airtightness but isn’t a substitute for explosion panels. Constructed from SANS 50025 Grade S 355 JR—or per client specs—it offers a robust, efficient design to reduce equipment damage. Customizable in size and shape with adaptable drilling arrangements, it’s operator- and maintenance-friendly, complete with a detailed manual, ensuring reliable pressure management in bulk handling systems.

Design Features

  • Weighted sealing flaps (typical: +1.5 kPa / -1.5 kPa)
  • Rubber seals for airtightness
  • Customisable size and shape
  • Adaptable drilling arrangements

Material Specifications

  • Body: SANS 50025 Grade S 355 JR
  • Or as per client specifications

Operating & Maintenance

  • Operator- and maintenance-friendly
  • Detailed manual supplied

Notes

  • Not a substitute for explosion relief panels
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