Apollo Command Module Environmental Control System Hardware: Potable Water Tank, AiResearch Part 812300 (Contract NAS-9-150). A large and impressive tank, approximately 12" in diameter x 16.5" tall (overall, with bottom bracket), an important part of the environmental system. The metal ID plate on the side states the part number as "812300-2-1", the serial number as "24-104", and reference spec as "ME192-0007-0002". Stamped nearby are multiple inspection stamps and the "Not Acceptable For Flight" designation. A 1973-dated NASA Technical Note "Apollo Experience Report - Potable Water System" states the use of this equipment: "The potable-water tank serves two purposes: a water-storage container in case of fuel-cell failure and an equalization tank to provide water during peak-demand conditions when the water demand rate exceeds the fuel-cell production rate for brief periods. The cylindrical vessel holds a maximum of 36 pounds of water and is fabricated from 6061 aluminum alloy. An oxygen-filled polyisoprene bladder maintains a pressure of approximately 25 psi in the tank and throughout the system. The oxygen that keeps the bladder inflated is obtained from a common SM supply that also provides oxygen for metabolic consumption and for power generation. Because free hydrogen in the water diffuses through the bladder material, a low-rate gas bleedoff is provided to prevent a buildup of diffused hydrogen, which could result in an explosive hydrogen/oxygen mixture in the oxygen plenum." A complete copy of this report is included with the lot. One of the most displayable pieces of Apollo hardware we've offered. Rare. Very fine.

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    Auction Dates
    November, 2014
    12th Wednesday
    Bids + Registered Phone Bidders: 2
    Lot Tracking Activity: N/A
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