Star House, Turbine Business Park, Turbine Road, Birkenhead, Merseyside, CH41 9BA

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Products & Services

We are the main contact centre for all World-Wide distribution of supplies.

Star International supplies all types of refrigerants, welding gases, electric welding machines, Fire service and safety equipment to the Marine & Offshore Market.

RS Series of drop-in replacements

Refrigerants to replace R22 and R404A, R507 and all 400 series gases.. 

RS Series of drop-in replacements

Refrigerants to replace R22 and R404A, R507 and all 400 series gases.. 

The RS Series of refrigerants are drop-in, low global warming potential, non-ozone depleting and non-flammable. Excluding RS-50, all can be used both with traditional lubricants (eg mineral and alkyl benzene oils) and the new synthetic lubricants such as polyol esters. They provide a simple and low-cost method of switching away from CFCs, R22 and R404A, R507 and all 400 series gases. .

Key benefits:

  • F-Gas compliant up to 2030
  • ASHRAE A1 and Standard 34 approved (non-flammable and low toxicity)
  • Environmentally friendly - low GWP and low ODP
  • Suitable for retrofit and installation applications
  • Little to no hardware changes for retrofit drop-in replacement of legacy refrigerants
  • Compatibility with MO, AB and POE lubricants


RS Series gases offer a solution to operators who are looking to ensure F-Gas compliance for existing refrigeration and air conditioning systems until 2030. Call us on +44 (0) 1244 504 500 for advice.

Find out more about our RS Series of refrigerants:



RS-24 (R426A)

RS-24 is an easy-to-use drop-in replacement for R12 and R134A with a Global Warming Potential (GWP) of 1509.


RS-45 Plus 

RS-45 Plus is a direct replacement (extension) gas that can be used in flooded evaporator systems previously converted from running on R22 to RS-45 (R434A).   


RS-50 (R442A)

Low GWP Drop-in replacement for R404A and R507 with higher efficiency and capacity. Can also replace R22 at low temperature with change of lubricant to POE.


RS-53 (R470A)

RS-53 (R470A) is a non-flammable, low Global Warming Potential (GWP) drop-in replacement for R410A.



RS-70 (R453A)

Suitable for use in both air conditioning & refrigeration applications. Suitable for use in systems with a capillary or TXV with similar mass flow to R22. Lowest GWP drop-in replacement for R22 on the market.


Gas Cylinders

Cylinder weights available for all gases: 13kg disposable, 10kg/50kg refillable.