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.
Features:- Pilot Operated
- Throttling Type Relief
- High Flow Rates
- Compact
- Reliability Due to Simplicity
- Tight Shutoff
- Fuel Gas Relief
- Gas Gathering Relief
Port Size
1" NPT
2" NPT
2" NPT
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
Connection
NPT
Pilot Operated
No
Model
F289
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
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
Product Description
Type F289 Pilot Operated Back Pressure Regulator
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
Application(s)
Pressure Protection, Commercial, Industrial
Series
Type 289 Series
Max Inlet Body Pressure
1"
50 PSIG above max output or 110 PSIG Max.
7.6 BAR
2"
15 PSIG
1.0 BAR
50 PSIG above max output or 110 PSIG Max.
7.6 BAR
2"
15 PSIG
1.0 BAR
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