Transfill Adapters for Built-In Oxygen Systems

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TA Transfill Adapters

The industry standard for oxygen fittings is what is called "CGA-540" (Compressed Gas Association, Arlington VA fitting No.540). Aircraft do not usually use these heavy-weight fittings; instead, special lighter-weight fill fittings have been developed. We have transfiller fittings for these so that you can easily refill your built-in system from standard CGA-540 oxygen systems. The adapters shown are for the aircraft fillers.

There are two types of aircraft oxygen filler fittings found in most GA aircraft. The earliest and most common versions are known as the MS22066 & MS22035. They are a 3/8-24 threaded fitting with a small valve-core or poppet valve for a check-valve that opens during transfilling. The other is a larger 9/16-18 thread commonly known as the SCOTT, Airline or AS1219 fitting.

The TA-380-S & -N are for the MS22066 and MS22035 filler ports. The TA-916-S & -N are for the 9/16-18 SCOTT fittings. The -N is for "nipple" and the -S is for "socket" on the CGA-540 ends. This nomenclature is used because the terms "male" and "female" were being constantly confused with CGA fittings. Micro-particle filters are installed on the 540 ends and an O-ring is on the 540 nipple for an air-tight fit by hand.
Transfilling Overview
Transfill Adapter Line-Up and Selector Guide

Other Mountain High Documents


MH-00GSE-1000-00

MH-00GSE-1000-00

Transfill Adapter, "N"-Style CGA-540 port and MS22066 or MS22035 Filler PortsThe CGA-540 port end of..

$127.50

MH-00GSE-1002-00

MH-00GSE-1002-00

Transfill Adapter, "S"-Style CGA-540 port and MS22066 or MS22035 Filler PortsThe CGA-540 port end of..

$131.80

MH-00GSE-1004-00

MH-00GSE-1004-00

Transfill Adapter, "S"-Style CGA-540 port and 9/16-18 Scott FittingThe CGA-540 port end of the adapt..

$179.00

MH-00GSE-1026-00

MH-00GSE-1026-00

Transfill Adapter, "N"-Style CGA-540 port and 9/16-18 Scott FittingThe CGA-540 port end of the adapt..

$135.00

MH-00GSE-1037-01

MH-00GSE-1037-01

Adapter, SCOTT type to AN-800 (MS22066)Adapts the TA-380-X to fit to SCOTT type fittingsTA Transfill..

$89.00

MH-00GSE-1038-00

MH-00GSE-1038-00

Adapter, SCOTT type to 1/8 NPT MaleTA Transfill AdaptersThe industry standard for oxygen fittings is..

$75.00

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