The ZEVAC’s are Class I, Div I rated, and it is not electric, or gas powered, however it is powered by an Air Compressor that is typically run by a diesel driven engine.   The standard air pressure of the Air Compressors is 150 psig.  The flowrate of the units will vary depending on the size of the ZEVAC used and the specific project requirements.  The flow range of the air compressor can be anywhere from 120 scfm for the Mini to 900 scfm for a single Quad.  As more units are run in parallel, the number and size of the air compressors will vary.   The Reciprocating Compressor has a 6-cylinder turbocharged rich burn 225 HP @1,800 engine that runs on sweet field gas with a BTU (PPM) range of 900 – 1,300.  H2S process gas content must be less than 100 ppm.