Fuelstop TFV Capillary 3/8″ – 10mm Fire Valve

fire valve comp

Fuelstop TFV Capillary 3/8″ – 10mm Fire Valve

From £30.80 £36.96

In stock
  • 3/8” BSP Female
  • 10mm Compression fitting & inserts included
  • Flow rate: 180 litres per hr /1.2m head
  • 1.5m – 35m Capillary length (depends on model)
  • Liquid filled capillary
  • Temperature Ranges: 66°C to 72°C and 86°C to 95°C
  • OFTEC Approved

From £30.80 £36.96

SKU: FVC-xxxxxx



Arguably the best quality Fire Valve in existence today… and it’s British-made! Fluid-filled capillary and bellows mean that it is more responsive (than other air filled capillary and bellows on the market). Therefore, we can set the trip mechanism with more tolerance (this does not have to be set on a hair-trigger). Which results in zero nuisance tripping and within a tighter trip range. It is the only fire valve we know of that is approved to British Standard BS 799 part 5. **Free 10mm compression fittings and copper pipe inserts with all 3/8″ body fire valves**

The Fuelstop Valve’s ‘TFV’ was the first capillary operated fire valve to incorporate an integral shut-off facility as part of the reset mechanism.

All TFV fire valves are suitable for use with Class C and D fuels and LPG. They provide automatic shut-off in the event of an overheat within a fuel-burning appliance and fail-safe shut-off in the event of capillary or sensor failure.

  • Connection Size: 3/8″ -10mm BSP Female.
  • Capillary Lengths: 1.5m (72°C only), 2.0m (95°C only), 3.0m, 6.0m, 10.0m, 15.0m and 25.0m.
  • Temperature Ranges: 66°C to 72°C and 86°C to 95°C. The upper-temperature limits of 72C and 95C are used to indicate the individual ranges.
  • Flow Rates: The TFV range of valves have high flow rate characteristics. Making them ideal for suction lift applications, 1/2″ valves are rated at 360 liters/hr, measured at a 1.2m head.
  • Applications: All TFV’s are suitable for use with suction or gravity head fuel systems at pressures of –0.8 bar vacuum and 3 bar positive head.
  • Accessories: All TFV’s are available with an integral volt free changeover switch, rated at 5 amp 240V ac, see our TFV/E Range. Also available are TFV support brackets for wall mounting and phial clips for the correct positioning of the sensor phial within the appliance casing.
  • Approvals: OFTEC Approved to OFS E101:1996. Also conforms to BS 5410 Part 1, 1997 and European Pressure Equipment Directive under the Category of Sound Engineering Practice (SEP). As well as all Essential Health and Safety Requirements.
  • Reliability: The TFV range has exceptional reliability, acclaimed by our distributors. A combination of design, high build quality using the latest technology, and rigorous testing eliminate ‘nuisance trip’ and other common causes of failure.
  • Manufacturer: All TFV’s are made in the UK and carry an individual serial number. As a result allows both manufacturing and component traceability.
  • Fuelstop Valves Company Approvals: ISO 9001:2015 accredited and OFTEC members.


The Fuelstop fire valves use Viton seals and seats. Which means they are compatible with bio-oils that meet the EN14214 standard. (it is not possible to make a sweeping compatibility statement about bio-oils. This is because there are many different types and people can blend their own). Using a bio-oil that has not been made to the EN14214 standard could damage the brass and the rubber seat, leading to leaks and other damage.  In short, Fuelstop fire valves are fine for use with bio-oils that meet the EN14214 standard.

Additional information

Weight1 kg
Temperature Range

65-72°C, 85-95°C

Capillary Length

1.5m, 2m, 3m, 6m, 10m, 12m, 15m, 20m, 25m, 35m

6 reviews for Fuelstop TFV Capillary 3/8″ – 10mm Fire Valve

  1. 5 out of 5

    D Ward

    excellent product

  2. 5 out of 5

    C Briscoe

    Replacement for an earlier model. Ready to fit with new boiler installation. Looks same good quality, time will tell…

  3. 4 out of 5

    G Sore

    Does the job ok. Solid well made.

  4. 5 out of 5

    R Folkes

    A good value for money item that does the job. Better that it comes complete with the pipe fixings.

  5. 5 out of 5


    Well made product, simple fitting fast delivery.

  6. 5 out of 5

    T S

    Replacement for previous identical part. Lasted well so no hesitation in replacing with same again.

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