Check the listing for details. AR2000 1/4" Thread BSP Pneumatic Air Compressor Pressure Regulator Fittings. Condition: New. Listed at 11.53 USD. In the pneumatic transmission system, the air source treatment device refers to the air filter, pressure reducing valve and oil mis.The filtration degree is generally 20-70μm, the voltage regulation range is 0.05-1.0Mpa. These three components are connected to be a component called pneumatic triplet. Triplet is the most indispensable air supply device in most pneumatic system which is installed in the air intake, is the final guarantee of compressed air quality. Three pieces of the installation order according to the direction of the air were air filters, pressure reducing valve and oil mist. Air filters and pressure relief valves can be combined together as pneumatic components. The air filter and the pressure relief valve can also be assembled together to become a filter pressure relief valve (function and air filter and pressure relief valve used in conjunction with the same). In some cases it is not possible to allow the presence of oil mist in the compressed air, the oil mist separator is used to filter the oil mist in the compressed air. In short, these components can be selected according to need, and they can be combined. 1.The structure is delicate and compact, which is convenient for installation and application. 2.The pressed-in self-locking mechanism can prevent the abnormal movement of the set pressure caused by external interfere.