Service Propulsion System (SPS) Engine Injector Valve indicator.
Shows position of SPS injector valves.
Left deflection (as shown) indicates valve closed; right indicates open.
Total of four identical indicators used on the Apollo control panel (for monitoring primary and redundant fuel and oxidizer valves).
0.10 lbs. (0.04 kg)
© 1998-2015
Historic Space Systems at www.space1.com
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