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Marshall Excelsior 1289 Back Pressure Regulator / Relief Valve

  • $190.00


*The Marshall Excelsior-1289 relief valve is an exact clone of a 289 and P289/L289

See The Bulletin here

See Installation Instructions here

 

PLEASE ALLOW ADDITIONAL TIME FOR SHIPMENT OF BULK ORDERS OR LESS COMMON PRODUCTS. CONTACT US VIA PHONE OR EMAIL TO REQUEST MORE INFORMATION ON AVAILABILITY.

 

Available in settings ranging between 1 to 75 PSIG, the MEGR-1289H Series relief valve is a throttling relief valve used downstream of pressure regulators to protect the downstream system from overpressure. A smooth throttling action minimizes pressure surges in the system during emergency operation.

This unit features a pitot tube booster to achieve the highest possible relief capacity with a minimum buildup of system pressure.

The MEGR-1289H relief valve is installed between large second stage regulators and the burner to provide high capacity relief. They are ideal for low pressure settings due to the increased sensitivity provided by the large diaphragm area.

Click to Enlarge

Type: Adjustable / Inches WC or PSI
Max. Inlet Pressure: 100 PSIG (1” Body) 25 PSIG (2” Body)
Spring: Plated Steel
Inlet/Vent: 1”NPT / 1” NPT,   1”NPT / 2” NPT,    2”NPT / 2” NPT
Exterior FinishGray Powder Coat
DiaphragmFabric Reinforced Nitrile (NBR)     
Bonnet Cap & Bonnet / Body Material: 1” - All Aluminum, 2” - Aluminum Bonnet / Iron Body      
      

Features:

  • Throttling Type Relief
  • High Flow Rates
  • Compact
  • Reliability Due to Simplicity
  • Tight Shutoff

Applications:

  • Fuel Gas Relief
  • Gas Gathering Relief
  • Downstream System Pressure Control
  • Low-pressure relief

Flow Rates:

Click to Enlarge:

 

289 belgas p289

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