Breathing Air Applications - High Pressure Compressors from Gardner Denver

Breathing Air

For over 50 years Gardner Denver has been the breathing air system supplier to fire and safety, recreational and professional divers, marine, offshore and defence industries across the globe.

Standard Breathing Air

Its reputation for safety, reliability, quality and service is recognised as its most valuable asset by safety professionals and divers who accept nothing less than total dependability.

With breathing air systems installed throughout the world, Gardner Denver’s equipment combines leading technology and unsurpassed engineering excellence to deliver high quality breathing air you can rely on.

The Gardner Denver range of high pressure breathing air sets have earned their merits based on decades of performance in the breathing air market. Gardner Denver breathing air systems are designed, manufactured, tested and serviced to provide you with countless hours of continuous operation.

With internationally recognised quality certification and unrivalled focus on engineering excellence, Gardner Denver ensures a class-leading application.

The Gardner Denver range combines the latest technology, super silent running and efficient performance, together with simplicity of use.

Specialist Breathing Air


Gardner Denver’s Reavell compressors are fast becoming the industry standard for specialist breathing air applications, such as Heliox.

Renowned for reliability and long operational life, Reavell units provide high quality compression on demand, even in the most arduous situations.

Designed and manufactured in the UK to the highest international standards, Reavell Heliox compressors are robust 4 stage water cooled compressors, complemented with a compact design that provides one of the smallest footprints on the market for comparable compressors.

Reavell Heliox compressors can be supplied as standalone compressors for use in existing installations or as a bespoke package designed to meet specific customer requirements. The compressors are suitable for transfer, reclaim or dedicated breathing air duty and have been designed to meet all major worldwide survey and certification requirements.

Heliox Gases from Reavell

About Heliox

Helium comprises 25 percent of the elemental mass of the universe, making it the most abundant element after hydrogen, however minable quantities of helium are finite and declining. Even though the air we breathe consists of one part in 200,000 helium, commercial helium extraction requires much higher concentrations to be economically viable. The element is formed in radioactive decay processes that take place in the earth’s crust and it cannot be synthesized. Helium’s use in breathing atmospheres accounts for only about two percent of the commercial market. The relatively high cost of Helium means that many hyperbaric chambers, technical and saturation dives incorporate a reclamation system to recover up to 98% of the gas for re-use.

A heliox transfer system usually begins with separate sources of oxygen and helium, usually stored on shore but systems can be set up on board sea vessels or offshore rigs. When required the gases are transferred from the storage cylinders and put through a mixing chamber at the required ratio. This gas will then be delivered to a heliox transfer compressor at an inlet pressure of approximately 4 psig. The compressor receives a constant flow of this gas mixture, which is compressed and transferred into separate storage cylinders ready for use.