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Sirocco CO2 Welding Gas Pre Heater

  • Available in 110 or 240v and have a flow rate of approximately 28 LPM (60 CFH).
  • Compact robust casing ensures maximum service life and minimal maintenance.
  • Incorporated safety bursting disc in body which ruptures at 190 bar to safeguard the vaporiser from overpressure.
  • Thermostatically-controlled element protected by a heat fuse ensures that the heater provides gas on-demand and cuts out during the rest periods.
  • Neon indicator to show when element is heating.
  • CE approved


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

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The Sirocco CO2 Welding Gas Pre Heater is designed to vaporise liquid carbon dioxide from syphon-type CO2 cylinders where a greater flow rate is required than is available from standard gas take-off cylinders.  It heats the CO2 gas prior to entering the regulator to prevent damage to the regulator in high-flow applications.

The Sirocco screws directly onto the cylinder valve by means of a loose CO2 nut and sealing washer. The outlet is threaded CO2 male to accept a CO2 pressure regulator.

The body is forged from class A brass bar which ensures maximum strength, serviceability and safety.  The housing is made of flame-retardant PC ensuring insulation.


Sirocco CO2 Welding Gas Pre Heater Datasheet


What is a CO2 welding pre-heater and what does it do?

A CO2 pre-heater is a device that warms the CO2 gas before it enters the regulator. This is important because when CO2 expands from a liquid to a gas, it absorbs a lot of heat, which can cause the regulator to freeze. This can damage the regulator and stop the gas from flowing properly.

You only need a CO2 pre-heater if you are using pure CO2 gas and welding at high flow rates. If you are using a CO2 mix or welding at low flow rates, then you probably don’t need one.

  • Adds cost to your welding setup
  • Requires additional setup and maintenance
  • Can be bulky and inconvenient to use
  • Flow rate: Make sure the pre-heater can handle the flow rate of your welding application.
  • Voltage: Choose a pre-heater that is compatible with your local power supply.
  • Safety features: Look for a pre-heater with safety features such as a thermostat and pressure relief valve.
  • Size and portability: Consider how easy it will be to transport and use the pre-heater.
Additional information

1.1 kg


17 × 10 × 7 cm

Free Delivery

Free Delivery




110v , 240v


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.


Maximum Flow Rate: 3.2 kg/h (28 l/min) @ 200bar

Max Inlet Pressure: 230bar

Design Pressure: 190 bar

Inlet Connection: BS341 No.8, female

Outlet Connection: BS341 No.8, male

Dimensions: L 170 x W 100 x H 70mm

Weight: 1.1 Kg

Enclosure Rating: IP21

Sirocco CO2 Welding Gas Heater

Sirocco CO2 Welding Gas Pre Heater

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