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Hi Lo DG91N Flashback Arrestor – Fuel Gas, Oxygen, 3/8″, 1/2″, 3/4″

  • Enhanced safety against flashbacks
  • Improved peace of mind during welding
  • Reduced risk of explosions and injuries
  • Seamless integration with existing setups
  • Long-lasting durability


Worldwide Delivery
Rated excellent on Google
Over 50 years welding expertise
Free delivery over £85 inc. VAT

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Hi-Lo DG91N Flashback Arrestor: Forge a Safer Welding Path

Peace of mind is priceless when working with flammable gases. The Hi-Lo DG91N Flashback Arrestor is your unwavering guardian against a potentially catastrophic event – a flashback. This industry-standard safety device is available in Fuel Gas and Oxygen models, ensuring compatibility with your specific needs. Furthermore, it comes in a range of fitting sizes (3/8″, 1/2″, and 3/4″) to seamlessly integrate with your existing welding setup.


  • Available in Fuel Gas and Oxygen models
  • 3/8″, 1/2″, and 3/4″ fitting options
  • Flame arrestor for flashback prevention
  • Non-return valve to stop dangerous gas mixtures
  • Thermal shut-off valve for automatic gas flow cessation in high-heat situations
  • EN730-1 ISO 5175-1 compliant
  • Regularly tested for optimal performance


Part No. Description
HL070317 Oxygen – 3/8″
HL070318 Fuel Gas – 3/8″
HL070323 Oxygen – 1/2″
HL070324 Fuel Gas – 1/2″
HL3001-0269 Fuel Gas – 3/4″
HL3001-0270 Oxygen – 3/4″
Additional information
Free Delivery

Free Delivery


Hi Lo

Fuel Type

Fuel , Oxygen


1/2" , 3/4" , 3/8"


Click and Collect:
Free Click and Collect with no minimum spend from our warehouse on the Empress Park, Southampton with on-site parking. Once your order has been processed, we will advise you when it is ready for pickup.  Just want advice?  No problem.  Feel free to call in to speak to one of our friendly experts.

EWS Fleet Coverage Areas: 
Southampton | Eastleigh | Winchester | Alton | Farnham | Petersfield | Havant | Hayling Island | Waterlooville | Fareham | Portsmouth | Gosport | Chichester | Arun | Worthing | New Forest | Christchurch | Salisbury | Wiltshire | Test Valley | Basingstoke and Deane | West Berkshire | Reading | Hart | Waverley | East Hampshire | East Dorset | Hampshire | Bournemouth | Poole | Lymington | Ringwood | Verwood | East Preston | Goring-by-Sea | Lancing | Shoreham-by-Sea | Steyning | Bramber | Horsham | Adur

Nationwide Delivery (all items excluding gas cylinders):
Free UK mainland (England, Scotland and Wales) delivery on orders over £85 inc. VAT.
UK mainland delivery is £7.50 inc. VAT on orders under £85 inc. VAT.
UK islands and Northern Ireland shipping costs may vary.

UK Delivery for Gas Cylinders:
Shipping costs for gas cylinders are calculated at checkout once the delivery postcode is entered.

International Delivery:
Please contact us for an accurate delivery quote.

Hi Lo DG91N Flashback Arrestor

Hi Lo DG91N Flashback Arrestor – Fuel Gas, Oxygen, 3/8″, 1/2″, 3/4″

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£118.71£273.73 Select options
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