Over Range Protectors (ORP)

Over Range Protectors are used to prevent a gauge from being over pressured and damaged. These can be pre-set or set by the end user via the external adjustment screw. Once the set pressure is reached the Over Range Protector will prevent any further pressure from entering the instrument. As system pressure drops to the reopening pressure (25% below the closing pressure), the valve will open again.


  • Thread sizes: 1/2″ BSP or 1/4″ & 1/2″ NPT
  • Construction: Brass or stainless steel
  • Working pressure: from 0.4 to 600 bar (subject to material)
  • Over pressure: 1000 bar (600 bar Brass)
  • Max medium temperature: up to 80°C (subject to material)
  • Suitable for Pneumatic and Hydraulic applications


  • Oxygen clean service
  • Alternative materials
  • Tagging

Calibration Notes

Not applicable on this product.

If you have any questions, please contact us on +44 (0) 117 965 4615 or visit our enquiry page and submit the form.

We can also customise our products to your specific needs.

Excellent Customer Service

Dedicated pre and post sales staff

From your first enquiry through to future advice and support, we put customer service at the forefront of our business.

Need help? Contact us!

Leading industry standards

NQA ISO9001 Accredited and Achilles Affiliated

  • UKAS logo
  • Achilles logo
  • NQA UKAS logo
  • BEMA logo
  • QAS International ISO 14001:2025 logo

We use cookies. Some are necessary to make our site work and others are optional, allowing us to analyse site usage, personalise content and to tailor advertising. These are stored on your device and are placed by us and trusted partners. Find out more in our cookie policy.