Reducer for Efficient Compressor: including particle filter and water separator, with semi-automatic draining. High quality maintenance unit: The threaded connection and the connection are made of brass , hardened steel and stainless steel. Reliable and durable. Easy to install and maintain: simply connect the compressed air regulator between the compressor and the consumer, pull the black knob and set the desired pressure. Easy to install and maintain. Compressed air pressure gauge parameters: pressure setting range: 0.05 - 0.85MPa, maximum setting pressure: 0.95MPa. Operating temperature range: 5 - 60C. Water filter cup capacity: 60cc. How it works: It effectively protects the compressed air system from mechanical contamination and water and maintains working pressure. The pressure reducer allows even air discharge and smooth compressor operation. Extends the life of the machine.