Back Pressure Regulator 6000 psi: 1/4 in FNPT

Back pressure regulator, 1/4 in FNPT. Maximum pressure rated to 6000 psi (414 bar). Outlet pressure adjustment range of 300-5000 psi (21-345 bar). The set pressure can be adjusted by loosening the jam nut and turning the adjusting screw.


Also known as a priority valve, the model 211 is a fully balanced, economical regulator. It serves a wide variety of uses, however its main use is on small compressors. The regulator will improve moisture separator efficiency and filter life as much as 450%. This is done by maintaining pressure in the separator and filter at 1800 psi or more when tank pressure is lower. It has two outlet ports permitting attachment of a filling yoke and gauge directly to the regulator. This eliminates costly fittings.


Type Back pressure regulator
Special Features High flow
Maximum Rated Pressure 6000 psi (40 MPa)
Set Pressure 1800 psi (124 bar)
Outlet Pressure Setting Range/Adjustment Range 300-5000 psi (21-345 bar)
Inlet Port Size 1 ea 1/4 in FNPT
Outlet Port Size 2 ea 1/4 in FNPT
Outlet Pressure Rating 6000 psi (414 bar)
Flow Capacity 2 to 50 SCFM
Leakage Zero external; 0.05 SCFM internal
Weight 6.9 oz (195 g)
Size (L x W x H) 3.7 x 1.5 x 1 in
Minimum Temperature -15ºF (-26ºC)
Body Material Anodized Aluminum
Internal Materials Brass
Seal Materials Viton
Flow Coefficient (Cv) 0.15

Typical Applications

  • Separator and filter systems
  • Compressors
  • Control systems
  • Cascading systems