COMPRESSED AIR MAINTENANCE UNIT: The compressed air water separator is an efficient maintenance unit with oil/water separator filter and German quick connector for use on compressors and compressor tools. USAGE: 1/4 BSP compressed air filter water separator oil separator for compressor water separator Can filter small particles, keep the air clean, circulating compressed air can remove dirt and condensate. HIGH-QUALITY MATERIAL AND APPLICATION: The connector is made of high-quality copper, sturdy and durable. The compressed air maintenance unit is suitable for various occasions to connect a compressor or compressed air line and is easy to install. SPECIFICATIONS: The size of the compressor water separator is 10 * 10 * 4cm/3.94 * 3.94 * 1.57inch, internal thread: 1/4inch. Advantages: Compressed air filters extend the advantages of filters through differential pressure drainage. When the machine stops working, it starts to drain water.