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Ed Smith

This valve appears to be an early development version of the Saturn S-II stage fuel tank vent/relief valve. The S & ID control number on the parts tag gives a hint that this was a North American Aviation Inc., Space and Information Systems Division specified valve assembly. I think the valve you have was a 7-inch valve that was flown in pairs on the S-II second stage of the Apollo V stack. The S-IVB fuel vent/relief valve (Douglas spec. 1A48257) was manufactured for Douglas Aircraft by Ametek/Calmec Mfg. Co. (P/N 519).

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