Preschona trade advert
Trade literature advert for the Preschona company (Adolf Meyer) in Berlin, Germany. The company was a supply contractor and (among other items) manufactured the non-return valve for the steam turbine exhaust heat exchanger, employed to volatilise a small portion of liquid oxygen (LOX) to pressurise the LOX tank to maintain critical flow volume to the LOX turbo-pump.
Album: Turbopump parts and relics
Categories: Propellant flow
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