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R404A Refrigerant


R404A is an HFC blend that is widely used in low and medium temperature refrigeration applications, such as those used in commercial refrigeration, supermarket display cases, cold rooms, transport refrigeration and process cooling.

Although it is a popular refrigerant, R404A is coming under greater scrutiny due to its high Global Warming Potential (GWP). Lower-GWP replacements (drop-in and retrofit) are available including R407F and R407C.

For optimal performance and compatibility, BOC recommends the use of valve fittings that have plastic sealing washers (e.g. Nylon, PTFE or PCTFE) for refrigerant products. Hard or inflexible materials such as fibre washers may cause minor connection leaks. The sealing washer should be visually inspected for damage or wear before each use. Fittings should be installed slightly tighter than hand-tight.

  • Typical lubricant: Polyolester Oil
  • GWP: 3922 (high)
  • ODP: Non-Ozone Depleting
  • Boiling point: -46°C
  • Critical point: 72.1°C
  • Requires charging in the liquid phase


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