CNG filling compressors are a specific
kind of natural gas compressor used to fill high-pressure cylinders with
compressed natural gas. These are a reciprocating compressor, which compresses
the gas using pistons. CNG is used to lower the volume of natural gas by
raising the gas's pressure, just like other types of air compressors. By
raising the pressure and lowering the volume of the gas, natural gas
compressors compress natural gas. CNG filling compressors are available in a
number of different types, sizes, and designs that are suited for a variety of
uses and industries.