Tronair 20-4504-7000 – 4-Bottle Oxygen Cart with Manifold & High/Low Pressure Regulators

The Tronair 20-4504-7000 is designed to safely store, transport, and deliver oxygen for servicing aircraft systems and portable oxygen bottles. It allows up to four high-pressure cylinders to be connected via a manifold for simultaneous supply and pressure regulation. Reverse-flow check valves ensure isolation between cylinders, preventing backflow and maintaining stable oxygen delivery.

Only trained and qualified personnel should operate or service the oxygen cart. Always confirm that all components are clean, dry, and free of hydrocarbons per SAE AIR 1176 standards, as contaminants can ignite in oxygen-rich environments. Avoid using the cart near flammable materials, and never exceed an inlet or outlet pressure of 3,000 PSI.

No. The 20-4504-7000 is certified exclusively for oxygen service. Using nitrogen or any other gas can compromise the internal components and pose serious safety risks, including fire or explosion. The use of non-oxygen gases voids the Tronair warranty and all CE compliance certifications.

Before the initial setup, inspect the cart thoroughly for shipping damage and confirm all hose connections are secure. Bottles and outlet hoses should be installed according to the manufacturer’s instructions, ensuring that fittings are tightened two to two-and-a-half turns past finger-tight. Unused inlets must be capped to prevent contamination of the oxygen system.

Always ground both the cart and aircraft before connecting the service hose. Ensure all aircraft power sources are off, and avoid refilling during fueling or when flammable vapors are present. Charging should be performed slowly to prevent overheating and pressure spikes within the oxygen system.

Regular maintenance should include checking tires, greasing wheel bearings quarterly, and cleaning the unit to prevent contamination. Inspect inlet and outlet hoses weekly for cracks or kinks, and have gauges calibrated annually to ANSI Grade A accuracy. Oxygen components are not field-serviceable and should only be replaced or repaired by Tronair OEM technicians.

Store the oxygen cart in a clean, dry, temperature-controlled area. Cap all hoses and cover the unit with a lint-free cloth to maintain system cleanliness. Proper storage prevents moisture and particulate ingress, preserving oxygen purity for future operations.

If any leaks, abnormal pressure readings, or damaged fittings are observed, the unit should be removed from service immediately. Only trained personnel or Tronair service centers should inspect and repair oxygen components. Never attempt field repair or welding on oxygen equipment, as this can cause ignition hazards.

Servicing aircraft from the lowest-pressure bottle first maximizes total oxygen utilization. This method enables nearly depleted cylinders to be utilized effectively before switching to higher-pressure bottles, thereby reducing waste and maintaining efficiency throughout multiple service cycles.

PJi supplies OEM Tronair replacement parts, including regulators, manifolds, inlet hoses, and pressure gauges, all of which are cleaned to SAE AIR 1176 oxygen standards. Using genuine parts ensures system safety and compliance with CE and FAA maintenance standards. Spare parts should be ordered using the cart’s model and serial number to guarantee compatibility.

The 20-4504-7000 is covered by a one-year warranty against material and manufacturing defects, with replacement parts warrantied for 90 days. Any unauthorized modification or repair voids warranty coverage. Tronair requires a Return Material Authorization (RMA) for warranty returns to ensure traceability and service verification.

Yes! The Tronair K-5836 Oxygen Booster Kit is the approved booster specifically designed for the 20-4504-7000 4-bottle oxygen cart. This booster integrates seamlessly with the cart’s existing manifold and regulator system, enabling operators to increase delivery pressure and enhance oxygen servicing efficiency as needed. If you choose to add a booster later, the K-5836 is the correct and only compatible option for this unit.