MH Oxygen Transfill Adapter, JIC-4 to AN-800 Nipple - 3 inch - 00GSE-1039-00

The MH Oxygen 00GSE-1039-00 transfill adapter is designed to connect a JIC-4 fitting to an AN-800 nipple, allowing for safe and efficient oxygen transfer between compatible systems. It facilitates oxygen transfilling in aviation ground support settings, especially where precise, secure fittings are essential. This adapter is especially useful when bridging equipment with different port styles.

This transfill adapter is made from UNS C36000 (CDA-360) brass and UNS C12200 copper tubing, assembled using a #56 silver-brazed alloy. These materials are selected for their durability, corrosion resistance, and compatibility with oxygen service environments. The high-quality construction ensures longevity and reliability under pressure.

The adapter has a 3.75” overall length and weighs approximately 1.5 oz (43 grams). It includes JIC-4M and AN-800-3 male connectors with UNF-2A threads. The adapter is designed to function effectively in temperatures ranging from -50°F to +130°F (-45°C to +55°C).

Yes! The transfill adapter is cleaned for oxygen service in accordance with Mountain High's ESR-008 standard. This ensures the adapter is safe for oxygen handling and minimizes the risk of contamination, combustion, or system failure. Proper oxygen cleaning is essential for equipment used in high-pressure oxygen applications.

Installation is straightforward using standard aviation-grade tools. The JIC-4M end requires a 1/2" hex wrench, while the AN-800-3 end uses a 7/16" hex wrench. Ensure both ends are securely tightened and free from contamination before initiating oxygen flow. Always follow manufacturer safety guidelines when working with pressurized oxygen systems.

The adapter is rated for a maximum operating pressure of 3,000 PSI. This high-pressure capability makes it suitable for use in aviation oxygen systems that require reliable performance under demanding conditions. Always ensure system pressure does not exceed this limit during operation.

By offering a secure, leak-free connection between two distinct fittings, the adapter minimizes the risk of accidental disconnection or gas leakage. Its oxygen-cleaned construction further reduces fire hazard risks. Proper use of this adapter supports the integrity of oxygen delivery systems during servicing and transfers.

Yes! Due to its compact 3” length and lightweight design, the adapter is highly portable and well-suited for mobile servicing operations. Technicians can easily transport and install it during field maintenance or remote aircraft support tasks. Its durability and ease of use make it a practical choice in both hangar and mobile settings.

The JIC-4M end features 7/16-20 UNF-2A threads, while the AN-800-3 end uses 3/8-24 UNF-2A threads. These precision-threaded connections ensure compatibility with industry-standard oxygen components, reducing the risk of cross-threading or poor sealing.

Routine inspection for wear, deformation, or contamination is recommended. Clean the threads and ensure fittings are debris-free before and after each use. Since the adapter is cleaned for oxygen use, avoid using lubricants or cleaners that are not approved for oxygen service.

A shorter adapter like this 3” model minimizes added space between connectors, reducing the chance of mechanical stress or hose entanglement. It offers improved maneuverability and is especially useful in confined servicing areas. The reduced length also lessens potential points of failure in the oxygen line.