... balancing reciprocating piston type, four cng compressor DF-0.3/(2-4)-210 Type Natural Gas Compressor1. Main SpecificationsDF-0.5 ... stages, cooling system, safety protection, skid mount package, metal protection case, operation gauge system, appliance device, etc.1) Model: DF-0 ... .5/(2-4)-2102) Type: D-shape symmetrical balancing reciprocating piston type ...