A methane gas compressor is a machine used to increase the pressure of natural gas, which is primarily composed of methane, so it can be transported through pipelines or stored in tanks for later use. Compressing natural gas makes it easier and more cost-effective to transport, as it allows more gas to be transported in a single pipeline or tank.There are several types of methane gas compressors, including reciprocating compressors, rotary screw compressors, and centrifugal compressors. Reciprocating compressors use pistons to compress the gas, while rotary screw compressors use two interlocking screws. Centrifugal compressors use an impeller to compress the gas.