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NABIC 500 available next day from Flowstar

At Flowstar we have over 2,000 NABIC valves in stock and available for immediate despatch!

The NABIC 500 High Lift Safety Valve, shown here, is designed primarily for use on unvented hot water heating systems, where a high capacity, emergency steam relief capability is required.



✅ WRAS approved
✅ High discharge capacity
✅ Max set pressure 12.5 Barg
✅ Screwed BSP female connections
✅ Available in sizes 1/2" x 3/4" up to 2.1/2" x 3"

All valves are tested to confirm the set pressure before leaving our warehouse, and all valves are supplied pre-set with a tamperproof seal.

We have the complete range of NABIC valves in stock including the 500, 500T, 520, 542 and 568 series.

Benefit from same day despatch and next day delivery when ordering stock valves from Flowstar.

For any NABIC or general valve enquiries, contact our sales team via phone on +44 (0)1482 601030, or email Alternatively, you can contact us using the convenient online chat feature on our website


  • Richard Moss

Latest News & Updates Flyer - Q3 2024

In our latest newsletter you can find details of the new range of RWC Aquasystem Expansion Vessels that we are now able to supply. Also featuring is the Bailey 616D Safety Relief Valve, which we have in stock and available on a next working day delivery. Finally, there are details of the range of Actuated Ball Valves which Flowstar are distributors of.

For more information about these products or any other of the valves we can supply please email or contact us on +44 (0)1482 601030.

Flowstar Latest News & Updates - Q3 2024

Flowstar Newsletter - Q3 2024

  • Richard Moss

MEDENUS Valves available from Flowstar

Flowstar is the UK and Ireland distributor of the MEDENUS Gas- Druckregeltechnik GmbH range of gas pressure regulators, including the type R100 Gas Pressure Regulator and type S100 Safety Shut Off Valves shown here.


We offer rapid delivery times, with these valves ready and despatched to our customer within 4 weeks!

MEDENUS valves are suitable for hydrogen and natural gas applications and ensure a constant outlet pressure – regardless of the primary (inlet) pressure - when the gas usage varies and ensures a quick pressure regulation when the flow rate abruptly changes.

The gas pressure regulators are suitable for gases in accordance with DVGW Code of Practice G260/262 and all other neutral and non-corrosive gases. All gas pressure regulators are certified by DVGW and CE, valves are available with flanged connections DN50 to DN200 (depending on model) and working pressure up to 8.0 bar.

For any of your MEDENUS or general valve enquiries please contact us on +44 01482 601030 or email


  • Richard Moss

Expansion Vessels now available from Flowstar

Flowstar are now able to supply a comprehensive range of Expansion Vessels from Reliance Valves (RWC). These expansion vessels play a crucial role in maintaining safe and efficient operation within heating systems and cold water systems. Let’s explore why you should consider Reliance Valves’ expansion vessels for your projects:

1. Reliance Valves’ expansion vessels are designed to prevent excessive pressure build-up in both heating and cold water systems. Whether you’re dealing with residential or commercial applications, these vessels ensure safe operating levels.

2. The Aquasystem range features replaceable membranes, allowing quick and easy servicing in situ. This feature ensures longevity and ease of maintenance.

3. The range of Reliance Valves (RWC) expansion vessels are available with capacities ranging from 2 to 5,000 litres. Whether you’re working on a small-scale domestic project or a large commercial installation, Flowstar has the right vessel for you.

Explore the full range of Reliance Valves’ expansion vessels now on Flowstar Valve Shop. Whether you’re upgrading an existing system or planning a new installation, we have the solutions you need.

For any enquiries or assistance, feel free to contact our sales team via phone on +44 (0)1482 601030, or email Alternatively, you can also use the convenient online chat feature on our website.


  • Richard Moss

Latest News & Updates Flyer - Q2 2024

In our latest newsletter you can find details of the new product ranges that we now stock, which are available for same day despatch. These new product ranges include valves from Coi Tech, Reliance Water Controls (RWC) and Altecnic / Caleffi.

Flowstar Latest News & Updates - Q2 2024

Flowstar Newsletter - Q2 2024

  • Richard Moss

Latest News & Updates Flyer - 02/10/23

In the October edition of our latest news and updates flyer you can find details of the different models of valves that we can supply, specifically from BESA, Medenus and Brownall.

Flowstar Latest News & Updates - October 2023

Latest News & Updates Flyer - 02/10/23

  • Richard Moss