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Cash Valve Type FR-6 Industrial Back Pressure Valve

Cash Valve Type FR-6 Industrial Back Pressure Valve

Allied Valve

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Cash Valve Type FR-6 Industrial Back Pressure Valve

Diaphragm actuated valve designed for either continuous or intermittent operation which provide accurate, repetitive pressure control

Product Features

  • Protect against periodic high pressure, control dependably at adjusted pressures and shut tight.
  • Maintain a pre-determined pressure on the inlet regardless of variations in pressure at the outlet.
  • Unique full ‘floating ring’ seating arrangement provides smooth, even control in response to pressure changes.
  • Globe type body with two side inlets and a bottom outlet, suitable for angle or in-line installation.
  • Fitted with a closing cap to discourage unauthorized tampering.
  • Optional differential pressure control modification enables a constantly held difference between reference and valve inlet pressures.
  • Incorporates a diaphragm ring above the diaphragm for higher back pressure ranges.
  • Rugged, simple design enables easy on-line maintenance and repair.


  • Materials: Bronze, cast iron, stainless steel (optional)
  • Sizes: ⅛” to 2” (3.2 to 50 mm)
  • Connections: Threaded NPTF
  • Pressure range: 0 to 600 psig (0 to 41.4 barg)
  • Temperature range: -320° to 600°F (-195° to 316°C)
  • Type FR-6 incorporates a diaphragm ring mounted above the diaphragm to accommodate higher back pressure ranges: 200-600 psig (13.8-41 barg); 200°-600°F (93°-316°C)


  • Fluids
  • Gases (except steam)