Quality construction and competitive pricing make these units the most widely used fill valves in use.  These Panel Mounted Fill Valves are designed for remote charging of inaccessible high pressure aircraft oxygen cylinders.  Normally located internally in the aircraft where access can be provided by ground service personnel.  The inlet charging fitting is per AND10089-3 (SAE AS1219) and is the U.S. standard for oxygen filler connections of this type.  A sealing cap is provided at the inlet connection for protection against contamination.  The cap, attached to a chain serves as a secondary seal in the event of check valve leakage.  The outlet fitting is per MS33514G3.  The unit contains an internal check valve, flow restrictor, and porous bronze filter.  Construction is of brass for heat absorption and corrosion resistance.  Suitable for filling any aircraft cylinder up to 115 CU. FT.