Industrial Valves from Equilibar, LLC.

Instrument Series Back Pressure Regulator LF Low Flow Model

Instrument Series Back Pressure Regulator LF Low Flow Model -- View Larger Image
Instrument Series Back Pressure Regulator LF Low Flow Model-Image
  • Controls Back Pressure Between: 0.02 (.5” WC) to 1000 psig
  • For pressure control at low flow rates
  • Temperatures to 327ºC (620ºF )
  • Standard Cv from 1E-11 to 0.07
  • Standard 316L Stainless Steel Body; Hastelloy C and PTFE also available
  • NPT, VCR/VCO type and Valco (low dead volume) ends available
  • Wide Variety of Diaphragms Including PTFE, Polyimide, SS316, Viton, and Nitrile
  • Chemical Compatibility: Can be configured to meet your aggressive chemistry
  • Highest available sensitivity and accuracy

Each of these standard Instrument Series models is based on our patented Equilibar precision back pressure regulator (BPR) technology. These models are capable of greater than 1000:1 flow rate turn-down ratios in most applications.

The LF Series BPR is capable of low flow operation down to about 10 cc/min of gas.


Product Category
Industrial Valves
Valve Type
Control Valve; Relief
Primary Material
Aluminum; Brass / Bronze (optional feature); Cast Iron (optional feature); Ductile Iron (optional feature); Stainless Steel; Steel; Exotic Metal (optional feature); PTFE (optional feature)
Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water; Wastewater; Gas; Gasoline / Diesel Fuel; High Purity; LP Gas; Natural Gas; Sour Gas; Specialty Corrosive; Hydraulic; Powder Solids (optional feature); Steam; Air; Breathable; Compressed Air; Chemical
Valve Size
0.12 to 0.25 inch (3.17 to 6.35 mm)
Maximum Pressure
0.00 to 1000.00 psi (0.0 to 704 m H2O)
Number of Ports
Media Temperature
Flow (Cv)
Connection Description