DescriptionApollo Lunar Module Manual Fuel Fill Vent Disconnect Coupling. A component of the TRW TR-201 Descent Propulsion System, 5" long and 2.125" diameter at the round end, manufactured by the J. C. Carter Company of Costa Mesa, California for the Grumman Aircraft Engineering Company and for NASA. The metal manufacturer's ID plate includes the following information: "Coupling, Fuel Manual Disconnect, Fill-Vent Descent Propulsion/ LSC-270-804-3/ CONTR NO. NAS9-11" with a part number of "6870-6", date of manufacture "9/20/72", and serial number "5066152". The device is for use with hazardous fuels such as hydrazine and nitrogen tetroxide and is constructed of high alloy stainless steel. Careful handling is required for such fuels and therefore this mechanical valve will only open when fully engaged and properly seated, and will only release from its mated coupling when completely depressurized. A scarce and impressive unflown LM part. Very fine condition.
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