Most mechanically driven gas compressors can only handle 5,000- to 6,000-PSI requirements. Mechanically driven units that can handle over 6,000 PSI are rare and costly. If gas purity is required, most of these high-pressure units need high-pressure and high-maintenance purifiers installed, to compensate for hydrocarbon carryover created by oil-lubricated pistons. Air driven gas boosters do not suffer from these shortcomings and are therefore better suited for higher-pressure applications. Our standard air driven models are hydrocarbon-free and available in 50- to 25,000-PSI capacities.