Dear customer, Thank you for choosing our products. If there is any problem with our products, please contact us through the order information. We will be happy to serve you and solve it for you as soon as possible within 12 hours, thank you! Air filter regulator is that adjust The main channel of air pressure to a pressure value what the control device required after filtration through decompression,No matter the size of the inlet pressure and flow fluctuations, always maintain a stable outlet pressure. The Air filter regulator can effectively remove impurities and debris in the compressed air to extend tool life and performance. The air dryer glass for compressor is recommend to use the ISO VG32 lubricating oil, has a good atomization performance to lubricate components of the system. Usage scenarios: air compressors, pneumatic tools, gas connection installation, effective filtration of air moisture. Light weight, small size, easy installation and maintenance. ,ours email support.