Industrial piping and valves

NABIC Safety Valves

Precision engineered pressure relief and safety valves for commercial and industrial applications. Quality above all.

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Our Range

Featured Products

NABIC Fig 542 Safety Relief Valve

NABIC Fig 542

Safety Relief Valve

A versatile standard lift safety relief valve, designed primarily for hot water boiler protection and suitable for a range of hot water, steam and air applications.

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NABIC Fig 500 High Lift Safety Valve

NABIC Fig 500

High Lift Safety Valve

Designed for steam, hot water, and air systems. Features a resilient seating design for high performance tightness and durability.

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NABIC Fig 500T Combined Pressure & Temperature Relief Valve

NABIC Fig 500T

Pressure & Temperature Relief

Combined pressure and temperature protection for unvented hot water supply systems, with independently operating pressure and temperature mechanisms.

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Expertise Behind Every Order

NABIC Valve Support

Replacing an existing valve, specifying a new one or looking for technical information? VIP can help you take the next step.

Replacing an Existing NABIC Valve?

Send our team photographs of your valve and its identification plate. We can help identify the model and discuss a suitable replacement.

Useful details to include

  • Figure number and serial number, if readable
  • Valve size and inlet/outlet connections
  • Required set pressure and application
  • Quantity, delivery location and required date

Unsure of any details? Send what you have and we will help you work through it.

Identify Your Valve

Pressure Setting & Certification

As a NABIC trained and approved distributor, VIP can set and certify suitable valves to your required pressure before despatch, using our in-house testing facilities.

  • Pressure setting to your specified requirement
  • Suitability checked against the model and spring range
  • Pressure test certificates available on request
  • Availability and delivery confirmed by our team

Tell us your application, valve model and required set pressure. Include any project certification requirements with your enquiry.

Discuss Your Requirements

Certificate charges and lead times will be confirmed with your quotation.

NABIC Technical Downloads

Find the manufacturer information you need to check dimensions, connections, performance and installation requirements.

  • Product datasheets and dimensional information
  • Discharge capacity tables
  • Installation, operation and maintenance instructions
  • Spring tables and model-specific approvals

Ordering a Fig 500T? Its inlet and outlet threads are one size larger than the nominal valve bore. Check both before ordering.

Find Technical Documents

Browse by model below or ask VIP for the document you need.

Before You Order

Your NABIC Questions Answered

Practical guidance on replacements, pressure setting and technical information.

What is the difference between the NABIC 500 and 542?
The Fig 500 is a high lift safety valve designed primarily for unvented hot water heating systems where high-capacity emergency steam relief is required. The Fig 542 is a standard lift safety relief valve designed primarily for hot water boiler protection. Both have wider applications, but the correct choice depends on the system duty, set pressure and required discharge capacity. Check the relevant manufacturer data or contact VIP with your requirements.
What information do I need to order a replacement?
Send the figure number, valve size, inlet and outlet connections, set pressure and application. A serial number and clear photographs of the complete valve and its identification plate are also helpful. Include your quantity and required delivery date. If some details are unreadable, send what you have so our team can help.
Can VIP supply a valve at my required set pressure?
VIP can set suitable NABIC valves before despatch using our in-house testing facilities. The available setting depends on the valve model, size, spring range and application. Give us the set pressure specified for your system and we will confirm the supply options.
Can I request a pressure test certificate?
Yes. Request a pressure test certificate with your enquiry or order. Tell us if you need a certificate for each valve or any specific project documentation. Applicable charges will be confirmed with your quotation or shown during ordering.
Is the nominal valve size the same as the connection size?
Not always. On the Fig 500, the outlet connection is one size larger than the inlet. On the Fig 500T, both inlet and outlet threads are one size larger than the nominal valve bore: for example, a DN20 Fig 500T has 1-inch connections. Check the model's dimensional table and connection details when ordering.
Where can I find dimensions and discharge capacities?
Use the technical links above to open the manufacturer's model page, including its dimensions, discharge tables and downloadable literature. Capacity depends on the application and pressure; selecting a valve solely to match the pipe size is insufficient. Final selection should be confirmed by the person responsible for the system design.

Have a question about your valve or an upcoming order?

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