Fisher Type 289H-2 Backpressure Regulator/Relief Valve

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SKU
289H-2

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The Fisher Type 289H-2 Backpressure Regulator/Relief Valve is a throttling relief valve used downstream of pressure regulators to protect the downstream system from overpressure. Features:
  • 2" NPT
  • Spring Range – 0.5 - 2.25 psi
  • Maximum Allowable Relief (Inlet) - 100 psig / 6.9 bar
  • Relief Set Pressure Ranges - 5wc to 50 psig / 25mbar to 3.5 bar
  • Throttling Type Relief
  • High Flow Rates
  • Small Size
  • Reliability Due to Simplicity
  • Compact Design

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  • The Fisher Type 289H-2 Backpressure Regulator is a 2" npt valve with 0.5 - 2.25 psi spring range. The smooth throttling action minimizes pressure surges in the system during emergency operation. The unit features a pilot tube booster to achieve the highest possible relief capacity with a minimum build-up of the system pressure. The 289H-2 is installed between large second-stage regulators and the burner to provide high capacity relief. They are also ideal for low pressure settings due to increased sensitivity provided by the large diaphragm area.



    This item has a catalog number of 289-973-16973
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