Manufacturers often pre-assemble air filters, regulators, and lubricators to form a combined unit. They are packaged together as a standard body size with common connection port sizes. Interconnection can be through threaded fittings or modular face connectors.

    Modular connectors allow components to be easily removed for repair or cleaning. Additionally, some manufacturers combine the filter and regulator in a stacked assembly, where the filter head becomes the regulator body. These assemblies share common inlet and outlet connections, making the assembly very compact.

    Point-of-use FRLs (Air Filters, Regulators, and Lubricators) are required to ensure that each tool or process receives a clean, lubricated supply of compressed air at the proper pressure for optimum performance.

    Reliability is one of the most important reasons to use compressed air, and proper filtration is key to maximizing reliability and longevity. Unfortunately, compressed air can carry condensate, oil from the compressor, solid impurities from the air (pipe scale and rust), and other wear particles from the ambient air. These contaminants can cause problems at every point of use and should be removed by installing suitable filters.

    Filters are rated according to the smallest particle size their elements will capture. For example, many point-of-use filters are rated at 5 µm, although 40 to 60 µm filters are sufficient to protect most industrial applications. Note that a finer rating will increase the pressure drop across the filter, which equates to a higher energy cost for compressed air. Also, finer filters clog faster, also increasing pressure drop.

     Ningbo Sinppa Air Tools Factory is a Chinese manufacturer of pneumatic tools. The company mainly produces and sells tools such as Air Duster Gun, Air Chuck, Tubeless Snap Tire Valve, etc.