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BelGAS 289 Series - P289 Relief Valve/Back Pressure Regulator
The BelGAS P289 back pressure regulator functions as a high flow relief valve with an adjustable setpoint. It can be used in place of a standard relief valve to provide protection against over-pressurization in the downstream system. With its large diaphragm area and integral pitot tube booster, the P289 is designed for quick and smooth response to excessive pressure relief requirements, particularly within low-pressure settings. Optional regulator rebuild kits are also available.
Applications:
- Higher Pressure Applications
- Fuel Gas Relief
- Gas Gathering Relief
Features:
- Throttling Type Relief
- Compact
- Tight Shutoff
- High Flow Rates
- Reliability Due to Simplicity
Specifications
Model
P289
Body Sizes
3/4" x 2" NPT 1" x 2" NPT 2" x 2" NPT
Spring Range
1" 1-4.5 PSIG / 0.07. - 0.3 BAR 4-15 PSIG / 0.3 - 1.0 BAR 10-20 PSIG / 0.69 - 1.4 BAR 15-50 PSIG / 1.0 - 3.4 BAR 45-75 PSIG / 3.1 - 5.2 BAR 2" 7 - 18" WC / 0.02 - 0.05 BAR 0.5 - 2.25 PSIG / 0.04 - 0.16 BAR 1.75 - 7 PSIG / 0.12 - 0.48 BAR 4 - 10 PSIG / 0.28 - 0.7 BAR
Application(s)
Industrial, Commercial, Pressure Protection
Pilot Operated
No
Connection
NPT
Product Description
Type P289 Back Pressure Regulator
Temperature Range(s)
1": -20° to 150°F with Nitrile and Neoprene Elastomers ; 0° to 300°F with Fluoro Elastomers; 2": -20° to 150°F with Nitrile and Neoprene; 0° to 300°F with Fluoro Elastomers
Body, Bonnet, Diaphragm Material
1" Body: Aluminum Bonnet: Aluminum Diaphragm: Nitrile or Fluoroelastomer Gaskets: Neoprene O-rings: Nitrile or Fluroelastomer O-ring Piston and spacer: Aluminum Pitot Tube: Aluminum Spring: Zinc-plated steel Diaphragm Piston: Zinc-plated steel 2" Body: Cast Iron Body Bonnet: Aluminum Diaphragm: Nitrile or Fluoroelastomer Gaskets: Neoprene/Compsite O-rings: Nitrile or Fluroelastomer Seat Washer: Stainless Steel Pitot Tube: Brass or Stainless Steel Main Seat: Brass or Stainless Steel Spring: Zinc-plated steel Diaphragm Piston: Zinc-plated steel
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