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BelGAS 289 Series - F289 Pilot Operated Relief Valve/Back Pressure Regulator
The F289 is a Pilot Operated Back Pressure Regulator that functions as a high flow relief valve with an adjustable setpoint. The F289 can be used in place of a standard relief valve to provide protection against over pressurization in the downstream system. The pilot regulator allows for accurate back pressure control with minimal buildup over the set pressure for full opening of the main valve.
Applications:
- Fuel Gas Relief
- Gas Gathering Relief
Features:
- Pilot Operated
- Throttling Type Relief
- High Flow Rates
- Compact
- Reliability Due to Simplicity
- Tight Shutoff
Specifications
Model
F289
Port Size
1", 2" NPT
Spring Range
1" 10 - 18 PSIG .7-1.2 BAR 18 - 30 PSIG 1.2-2.1 BAR 30 - 100 PSIG 2.1-6.9 BAR 2" 14" - 2 PSIG .04 - .14 2 - 10 PSIG .14 - .7
Application(s)
Pressure Protection, Commercial, Industrial
Pilot Operated
No
Connection
NPT
Product Description
Type F289 Pilot Operated 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 Elastomers, 0° to 300°F with Fluoro Elastomers
Max Inlet Body Pressure
1" 50 PSIG above max output or 110 PSIG Max. 7.6 BAR 2" 15 PSIG 1.0 BAR
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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