... lubrication, explosion-proof requirements; 3. no oil compression technology, the gas is not contaminated; 4. do not need electrical equipment, not produced ... 3-100mm, water pipe 3-50mm, drill tubing 300-60mmFourth:equipment 1. gas supercharger core parts: pressurized gases, in order to ... : pressure gauges, valves, fittings, etc. Most popular Automotive testing equipment &air tightness test rig