But instead of hot or cool air escaping ... can cost both time and money because fugitive emissions are emitted from several sources: valves (60%), flanges and pumps (15%), relief valves (15% ...

many companies use pressurized natural gas to operate their pneumatic instruments and control valves. The system works well but produces significant methane emissions. “High-bleed” pneumatic ...

Although no numbers were announced, the company claims that the new system reduces fuel consumption and CO2 emissions ... technology features pneumatic control of engine valves.