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.
Features:- Throttling Type Relief
- Compact
- Tight Shutoff
- High Flow Rates
- Reliability Due to Simplicity
- Higher Pressure Applications
- Fuel Gas Relief
- Gas Gathering Relief
Pilot Operated
No
Connection
NPT
Application(s)
Industrial, Commercial, Pressure Protection
Rebuild Kits
yes
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
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
Temperature Range(s)
1"
-20–150 ºF with Nitrile
and Neoprene
0–300 ºF
with Fluoroelastomer
2"
-20–150 ºF with Nitrile
and Neoprene Elastomers
0–300 ºF
with Fluoroelastomer
-20–150 ºF with Nitrile
and Neoprene
0–300 ºF
with Fluoroelastomer
2"
-20–150 ºF with Nitrile
and Neoprene Elastomers
0–300 ºF
with Fluoroelastomer
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" W.C. / 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
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" W.C. / 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
Body Sizes
3/4" x 2" NPT
1" x 2" NPT
2" x 2" NPT
1" x 2" NPT
2" x 2" NPT
Product Description
Type P289 Back Pressure Regulator
Model
P289
Series
Type 289 Series
Find Your Part Number
Not sure? Call for help. Phone: 304-387-1200
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