Large solenoid valve for the Apollo Saturn V S-IVB stage manufactured by VACCO Valve Co., measuring approximately 10.5″ x 3″ x 3″, marked on the body: "Valve, Solenoid, SSD6P1-41MSA, NAS7-101, 1A69815-517 Rev. AB…S/N 13868-99, Assy. & Inst. 3-Q-65, Wt. 10 lbs." Includes its original humidity indicator card, cleaning and inspection tag (dated March 6, 1968), and cloth bag with "Critical Hardware for Saturn/Apollo" label. Includes a copy of the Marshall Space Flight Center publication "Saturn V Composite Mechanical Schematic," which diagrams the valve as part of the APS Pneumatic Console. In fine condition.
