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Air Transfer Valve

Valves & Hardware

Stock Code: RIS-ATV

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The Air Transfer valve allows the slug of air trapped in the fill line between the delivery tanker and submerged drop tube exit to escape into the tank ullage, instead of being pressurised and forced through the stored product in the tank.


  • Reduced creation of vapour
  • Reduces turbulence of fuel in the storage tank
  • Faster delivery cycle
  • Reduced risk of fill line lock-ups and blow-backs
  • Prevents aeration of suction lines and loss of pump prime
  • The Patented RIS-ATV can be easily installed on site, with new or existing removable drop tubes.
  • A form and drill installation tool is required for existing drop tube applications. New pre-formed drop tubes are available.
  • RIS-ATV valves are compatible with both RIS-STOP and other makes of Overfill Prevention Devices.

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