NASA’s Apollo Program was the ’60s-era race to the moon that culminated with Neil Armstrong’s walk on the lunar surface in 1969. During those crucial years, Francis X. Hursey was pioneering PSA (pressure swing adsorption) oxygen technology as a member of the spacecraft’s breathing air team. After Project Apollo, Frank helped develop one of the first oxygen concentrators for home use. It was this core of knowledge that led him to found On Site Gas Systems in 1987.

Who is On Site Gas? As you might have guessed from our name, we design and build gas-generating (nitrogen and oxygen) systems that function on-site at your physical plant. Our systems are used in mission-critical applications, across dozens of industries, in over 100 countries.
Our standard products are often modified or customized to meet specific customer requirements. All our systems are built in the USA. During more than 25 years in business, we have exhibited an unprecedented level of growth and excellence. Our customers use On Site Gas Systems to replace or augment other gas delivery methods, and many report monthly savings of up to 80%.