Our top of the line system rated "Best Value" by Aviation Consumer magazine, May 1995.

NELSON Aircraft introduced the OXYPACK PORTABLE system about 10 years ago. It filled a need in the aviation industry requiring a high quality, long duration, light weight, portable system that was readily available. The OXYPACK PORTABLE also introduced the first practical carrying case and removable harness that is used to attach a portable oxygen system to an aircraft's seat. The system has been refined over the years and has been very well received all over the world. The OXYPACK PORTABLE is our top of the line unit. It is the best we make.

The OXYPACK PORTABLE has been reviewed and praised by the aviation press many times over the years. Most recently, in the May 1995 issue of AVIATION CONSUMER magazine, they reported in their review of portable oxygen equipment, "There's lots of portable oxygen equipment to pick from but we think the Nelson systems are the best value." They also reported, "The overall winner is Nelson, but these systems are not the least expensive by any means. You pay for the better case, harness and other features but we think the systems are worth the price. Nelson's excellent reputation for customer service adds to the value."

Our OXYPACK PORTABLE system consists of a light weight 22, or 24 cubic foot aluminum cylinder with a special Nelson diaphragm type multi-outlet regulator with a pressure gauge and a low pressure relief valve. Nickel plated brass instrument quality regulator/flow meter 90 degree disconnect fittings. Double porous bronze filter system in the fittings. Nelson A-3 or A-4 adjustable flow meters with Tygon tubing that can be ordered with special lengths. Oxymizer® cannulas with special attach fittings, and face masks. In addition the desirable Oxypack carrying case and harness assembly is supplied with each system. The OXYPACK PORTABLE systems are supplied for 1, 2, 3, or 4 person use.

The warranty is two years and includes repair or replacement of any part at no charge (with the exception of the cylinder) for a period of 2 years. Refer to written warranty for details.

The OXYPACK PORTABLE system incorporates the popular Oxygen conserving nasal cannula device manufactured by Chad Therapeutics. The Oxymizer® cannula collects oxygen wasted during the exhaling process of your breathing and accumulates the oxygen in a built in storage reservoir. The extra oxygen collected allows for a reduced flow rate, thus longer durations. At 18,000 ft. the savings are double and at 10,000 ft., the savings are tripled.

Nelson in-line oxygen flow meters allow for maximum durations possible. Two types of flow meters can be selected, the A-3 or the A-4. Each person in the aircraft has one of the flow meters and each one can adjust the meters as necessary. Both of these meters consist of a ball inside a tapered tube about 2 1/2 inches long. Along side of the tube is a scale(s) marked in altitude. At the base of the flow meter is a precision needle valve assembly that easily adjusts the flow of oxygen. To operate the flow meter, the user holds the unit approximately vertical, and then adjusts the needle valve to locate the floating ball next to the appropriate altitude scale. As the aircraft changes altitude, the flow rate is readjusted accordingly. After the setting is made, the flow meter can be placed in any position. The flow meter should be inspected for proper flow about 3-4 times an hour during cruising flight.

The A-3 flow meter is calibrated for use with Oxymizer® cannula and provides the minimum flow rate possible. FAA regulations allow the use of cannulas to 18,000 ft. Above that altitude a face mask must be used. The A-4 flow meter is similar to the A-3, but it has two altitude scales. The scale on the left is for the Oxymizer® and is marked from 10,000 ft. to 18,000 ft. This scale only goes about 1/4 the distance of the tapered tube and has a slightly higher flow rate for the Oxymizer®. This is to allow for a safety margin because of the shortened length of its altitude scale. The right hand scale is for face mask use and is calibrated from 10,000 ft. to 25,000 ft. This scale goes the full length of the tapered tube.

Typically, the A-3 is used for non-turbo aircraft. Most non-turbo aircraft cannot operate over 18,000 ft. which happens to be the limiting altitude for the Oxymizer® cannulas. The A-4 is recommended for turbo aircraft that operate up to 25,000 ft.. A combination of meters can also be used in turbo aircraft. A-3's are recommended for the rear passenger seats and A-4's for the front seats. Typically when flying with four people, turbo aircraft are not operated over 18,000 ft. or so.

In a turbo aircraft the Oxymizer® and the A-4's left hand scale are used during flight operations below 18,000 ft. If the aircraft is flown above 18,000 ft., then the Oxymizer® is replaced with a face mask. To accomplish this all one has to do is pull the flow meter output hose from the Oxymizer®, and push the hose onto the face mask. The is easily done in a few seconds. The reverse is done when descending below 18,000 ft..

The regulator (Part No. 300V) used in the OXYPACK PORTABLE system is manufactured by Veriflow Corporation, a major medical equipment supplier. It is an ultra reliable diaphragm type regulator commonly used in the medical industry for life support. The unit made for us is only unique due to the number of outlets and position of the pressure gauge and outlet ports. It is very accurate with a constant output from a full cylinder to one that is almost empty. One, two, three, or four outlets for the flow meters/breathing devices are provided. The regulator has an attached pressure gauge and is also equipped with a low pressure relief valve. The number of outlets can be increased up to four after purchase of a fewer outlet system.

Special instrument quality nickel plated brass CPC metal fittings with check valves are installed on the regulator. The disconnect operation is a simple one handed procedure. Just push down on a small lever and the flow meter connector is released from the regulator. To install the flow meter's connector, one simply pushes in the connector until it easily snaps into a locked position. The connector is also free to rotate, thereby preventing any twisting of the flow meter hose. 90 degree attachment elbows are provided to relocate the fittings downwards for a more compact and trouble free location. A special porous bronze filter is placed ahead of the check valve assembly, thus protecting the check valve from any possible foreign material.

The flow meter uses a CPC plated brass connector. A special porous bronze filter is installed ahead of the restrictor to prevent any foreign material from getting into the flow meter needle valve assembly.