The JGJ4 Ariel reciprocating compressor has oil-free cylinders and is driven by a Siemens electric motor. Cooling of compressed gas is made through water that takes place in a heat exchanger that is fitted with flexible hoses for connection to the external water supply sources of the Kuibushev oil-refinery.  Provided control panel is equipped with redundant ControlLogix and redundant I/O racks. IS barriers ware provided in the control panel (for use of Ex-i instrumentation).