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Risbridger Dead-Stop Overfill valve - Adjustable Float + 2" BSP Locknut

Valves & Hardware

Stock Code: DEAD-STOP-AF

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The DEAD STOP is a 2" overfill prevention valve with a ZERO leak rate, suitable for commercial above ground diesel storage installations, generator belly tanks and pressure deliveries

With a flow rate of 10 500 l/min and a maximum operating pressure of 10 bar 145 psi) the DEAD STOP 2 is suitable for a range of applications, protecting against the risk of an overfill should other methods fail

  • Cartridge construction for easy installation and in situ examination via a single 2” aperture.
  • High flow capacity
  • Effective at low flow rates (10 - 500 l/m pressure delivery up to 10 bar maximum.
  • Suitable for fuels of SAE10 or lower
  • Compatible with all pipework brands
  • Flexible connectors are available, to make installation easy and remove stress from pipework
  • The valve shuts in the direction of the flow, ensuring a positive seal maintained by the fill pressure
  • 100% tested in factory


  • Anodised Aluminium
  • Viton A (FKM)
  • Stainless Steel
  • HDPE closed cell foam

Suitable for:

  • Diesel
  • HVO
  • Bio Diesel
  • FAME Blends

Flow-rates / Pressure limitations

  • 10-500 litres per minute
  • Max 10 bar pressure

Activation Height

  • Standard float unit closes the valve when fuel reaches around 145mm below the tanks brimfull level
  • Adjustable float unit has a 1m long float droptube which can be cut to length to allow the valve to activate when fuel level reaches up to 1m below the tanks brimfull level

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