Aqua Environment nickel plated brass back pressure regulator, 1/4" FNPT. Maximum rated pressure: 6000 psi (414 bar). Outlet pressure adjustment range: 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 | 
|---|---|
| Maximum Rated Pressure | 6000 psi (40 MPa) | 
| Outlet Pressure Setting Range/Adjustment Range | 300-5000 psi (21-345 bar) | 
| Inlet Port Size | 1 ea 1/4" FNPT | 
| Outlet Port Size | 2 ea 1/4" FNPT | 
| Outlet Pressure Rating | 6000 psi (414 bar) | 
| Flow Capacity | 2 to 50 SCFM | 
| Leakage | Zero external; 0.05 SCFM internal | 
| Weight | 19.2 oz (545 g) | 
| Size (L x W x H) | 3.7 x 1.5 x 1" | 
| Minimum Temperature | -15ºF (-26ºC) | 
| Body Material | Nickel Plated Brass | 
| Internal Materials | Brass  Stainless  | 
| Seal Materials | Viton | 
| Flow Coefficient (Cv) | 0.15 | 
| Speical Notes | NOT OXYGEN CLEANED | 
