Systems include Nelson adjustable flow meters, Oxymizers®, and Oxypack case.

SPORTSMAN aviation oxygen systems are fully equipped systems suitable for use with any aircraft that can operate up to 25,000 feet. Supplied with the SPORTSMAN systems are industry standard Nelson, fully adjustable, A-3 or A-4 in-line oxygen flow meters, aluminum cylinder with pressure gauge, oxygen pressure regulator with disconnects, Oxymizer® cannulas, face masks, and a deluxe Nelson Oxypack carrying case/harness.

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.

SPORTSMAN systems meets or exceeds FAA regulations for supplemental oxygen use to 25,000 ft.

The SPORTSMAN system incorporates the popular Oxymizer® oxygen conserving nasal cannula device. 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 of a face mask or standard cannula, and at 10,000 ft., the savings are tripled.

Long durations of oxygen use are possible because of our, industry standard, Nelson in-line oxygen flow meters. Two types of flow meters can be selected, the A-3 or 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 and adjusted as necessary for proper flow, about 3-4 times an hour during cruising flight.

The A-3 flow meter is calibrated for use with the 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.

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. This is easily done in a few seconds. The reverse is done when descending below 18,000 ft.

The regulator (Part No. 300M) used in the SPORTSMAN system is a quality, lightweight, low pressure unit operating at 20 p.s.i. It is very accurate with a constant output from a full cylinder to one that is almost empty. Attachment of the regulator to the cylinder is by hand tightening, without any tools, and will provide a positive, no leak, attachment to the cylinder. One, two, three, or four outlets are provided for the flow meters/breathing devices.

Special medical-quality flow meter metal connectors are installed on the regulator and flow meters. These are simple, one hand operated units that feature a check valve on the unit attached to the regulator to stop the flow of oxygen when not being used. A special porous bronze filter is installed in the flow meter connector to prevent any foreign material from getting into the flow meter needle valve assembly.

Three aluminum cylinders are available; 14, 22 and 24 cubic foot. The 14 and 22 cubic foot cylinders fit the majority of aircraft; the 24 cubic foot cylinder is commonly used in Cessna and Beechcraft aircraft. All are equipped with a high pressure relief valve and oxygen pressure gauge. Cylinders can be filled, without any special refill fittings, at most oxygen refill facilities (aircraft, medical, industrial). Oxygen is normally refilled directly into the main fitting on the cylinder without the need of a special fitting. A special adapter is available to allow cylinders to be refilled from a standard airport oxygen system refill fitting used for refilling built-in oxygen equipped aircraft.

The SPORTSMAN systems are supplied with our exclusive deluxe Nelson Oxypack carrying case and attachment harness. Two components make up the case/harness. The harness is typically installed on the right front seat of most aircraft. It consists of two joined straps. One goes vertically around the seat and the other horizontally around the seat. They are joined at the middle. A stainless steel hook assembly is installed on the harness on the back side of the assembly. This hook will support the carrying case. A person sitting in the seat with an attached harness will not notice or be aware of the installation of the harness.

The case is constructed of two layers of heavy-duty fabric that is separated with a thin layer of foam rubber, thus providing exceptional protection for the regulator and cylinder. A zippered top closure assembly completely seals the equipment. A side pouch is attached to the case that contains the flow meters and Oxymizers®.

The Oxypack case is attached to the harness hook assembly that has been installed on the aircraft's seat. Secondary straps are provided on the harness assembly. These are used to firmly secure the case to the seat in case of significant side and negative flight loads. Two secondary straps are attached to each side of the case near the hook assembly. This takes care of the side loads. Another secondary strap is attached to the bottom of the vertical portion of the strap assembly. It is attached to the bottom of the case. This takes care of the negative loads.

With all straps snugly tightened, the SPORTSMAN system and its Oxypack case is very securely attached to the seat. The seat can still easily slide and tilt as before. The entire assembly takes very little space and usually doesn't create any undue discomfort for the passenger sttting behind the oxygen system. With the SPORTSMAN system in place, the pilot can easily operate the SPORTSMAN oxygen system with the right hand. Even the oxygen pressure gauge is located for easy inspection during flight.