FRL pneumatic unit (Filter, Regulator, Lubricator), a modular compressed air treatment device, Function: Cleans compressed air by removing moisture and particles (filter), regulates and stabilizes outlet pressure (regulator) and adds spray lubricant for air tools that require it (lubricator)., Port Size: Internal thread from (NPT or G1/2", depending on the exact version).1/2 inch, Working pressure: Typical adjustment range from 0.05 to 0.85 MPa (approx. 0.5 - 8.5 bar or 7-125 PSI)., Maximum CapacityA: About 3000-4000 liters per minute., Filtration accuracy: Standard 25 μm (or 5 μm optional)., Operating Temperature: 5 to 60 °C