DescriptionApollo Command Module Environmental Control System Hardware: Two Cyclic Accumulator Selector and Solenoid Valves, AiResearch Part 829130/32 (Contract NAS-9-150). Complex parts, 1.75" x 2.875" x 2" each with one two-pin electrical connector on front and two screw-on pressure connectors, front and bottom. There is a selector switch on top that is unmarked but is "AUTO" / "OFF" / "MANUAL". This was made by the Vacco Valve Company for AiResearch with details stamped on the lower portion as well as red "Warning/ Dielectric Testing/ Completed" stickers. The AiResearch ID tag lists the part number as "829130-1-1" and the serial numbers as "0086R1 / 0086R2". A different number is stamped on each: "829132-1". Inspector stamps present on both The cyclic accumulator transfers excess moisture to the waste-water tank. A diagram of this component copied from the "Apollo System Engineering Manual" is included. Very fine.
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