pressurizing and dump valve
1pressurization and dump valve — A valve used in a turbine engine fuel system equipped with duplex nozzles. When the demand for fuel is low, it flows through the primary manifold. The pressurization valve opens at a high fuel flow to deliver fuel to the secondary manifold. At… …
2Apollo 15, Outward journey — Launching at 9:34:00 am EST on July 26, 1971, Apollo 15 would take four days to reach the Moon. After spending two hours in orbit around the Earth, the S IVB third stage of the Saturn V was reignited to send them to the Moon.During the retrieval… …
