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Oxygen Concentrators Explained

Oxygen Concentrators ExplainedAn oxygen concentrator or an oxygen generator is used when a patient requires oxygen therapy. Compared to other oxygen supplies such as tanks, an oxygen concentrator is safer, more affordable and more convenient. Portable oxygen concentrators are also available which are even more convenient than the standard devices.


An oxygen concentrator is based on the principle that when nitrogen is exposed to zeolite materials, it sticks to them if the pressure is high. Zeolite is porous and adsorbs nitrogen in huge quantities. However, if the pressure is decreased, the nitrogen gas is released back into the air.

There are generally two cylinders in an oxygen machine and both of them contain zeolite pellets. These are subjected to compressed natural air. The zeolite adsorbs almost all of the nitrogen present in air, and the output from the cylinder is nearly pure oxygen gas.

After just a passage of a few seconds, zeolite saturates and so the compressed air is transmitted to the second zeolite cylinder. At the same time, the pressure in the first cylinder is reduced so that the nitrogen can escape. When zeolite in the second cylinder saturates, the first cylinder is again used to supply oxygen, and the pressure in the other cylinder is reduced. This process then continues repeatedly and an uninterrupted supply of oxygen is delivered to the patient.


The main components of an oxygen machine other than the zeolite beds are given below.

  • Air Filter: Prevents large particles in the air from entering into the system
  • Compressor: Takes up natural air from the environment, compresses it and transmits it to the zeolite cylinders
  • Oxygen Tank: Collects pure oxygen and delivers it to the patient
  • Valves: Adjust the flow at which oxygen is delivered to a patient

Portable Oxygen Concentrators Provide Freedom

Oxygen concentrators have become a critical piece of home medical equipment for many people suffering from ailments such as chronic obstructive pulmonary disease (COPD) or emphysema. VitalityMedical.com is a leader in home medical devices and offers a wide range of high-quality portable oxygen concentrators that can meet your needs.

Compared to the bulky oxygen tanks of the past, portable oxygen concentrators provide much more freedom. With units small enough to carry with ease and features that provide ease of use and security, portable oxygen concentrators are becoming the standard for those in need of oxygen supply.

SeQual Eclipse 2

SeQual Eclipse 2

VitalityMedical.com offers three of the leading manufacturers of oxygen concentrators, including SeQual, Inogen and Respironics. These top-notch products will provide the life-giving oxygen for those in need, and deliver it in a conveniently portable concentrator unit.

SeQual Eclipse 2 Portable Oxygen Concentrator

From SeQual there is the brand new Eclipse 2 Personal Ambulatory Oxygen System. This unit is the only portable oxygen concentrator that is able to provide continuous flow or pulse dose continuously, 24 hours a day, seven days a week.

Small and lightweight, this unit comes in at just 17.4 pounds with the power cartridge attached. This travel friendly unit is air travel approved and is an incredibly quiet unit. This quality unit is rugged and features AutoSAT Technology for the most consistent flow.

Inogen One

Inogen One

Inogen One Portable Oxygen Concentrator System

Inogen redefined the portable oxygen concentrator market with the Inogen One, creating a portable unit like no other on the market. This technologically unique model is easy to use as there is no longer a need for cylinders or base stations.

The Inogen One is designed to meet all of your needs, whether as a lightweight travel unit or a stationary device. This unit is energy efficient, weighs less than 10 pounds with the battery, and will make travel much easier due to its small size. With state of the art breath detection, this unit responds to breath signals with incredible sensitivity.

Respironics EverGo

Respironics EverGo

Respironics EverGo Oxygen Concentrator

Weighing in at under 10 pounds, the Respironics EverGo Portable Oxygen Concentrator provides one of the best solutions for oxygen needs. With a touch screen interface that is easy to use and low maintenance needs, the EverGo is as versatile as any unit on the market.

Designed for easy portability, the EverGo offers three power options, AC, DC and two rechargeable batteries. This unit takes the stress out of travel, and the batteries can last up to eight hours depending on the settings.

Invacare XPO2

Invacare XPO2

XPO2 Portable Oxygen Concentrator

Invacare’s brand new XPO2 Oxygen Concentrator comes in as one of the smallest portable units on the market, thus it’s name comes from it’s extreme portability. This stout yet lightweight unit is easy to operate and is only about the size of a thick book.

With multiple power options and quiet functioning, the XPO2 is ideal for travel and provides peace of mind for those worried about running out of oxygen. With pulse settings form 1-5, this unit provides independence for a broad range of needs.

EVO Central Air

EVO Central Air

Delphi EVO Central Air Portable Oxygen Concentrator

Another lightweight, highly portable unit, the EVO Central Air by Delphi comes in under 10 pounds and is easily transported by carrying or pulled with the included cart. Priced at a point that makes it affordable for many, the EVO Central Air provides freedom for many.

With efficient engineering, the smallest in its class and it’s durability the EVO Central Air is ideal for those looking to get away from the bulky oxygen tanks. Delphi offers premium service and support worldwide.

In addition to these great Portable Oxygen Concentrators, VitalityMedical.com offers a wide range of oxygen concentrator accessories for all of your needs. Check out our full line of products today, and give us a call to receive the best price on portable oxygen concentrators from any home medical supply company.

For 9 years, at Vitality Medical, we have delivered on our promise to sell top quality medical supplies at the best prices on the Web.