Gas pressure control Photo 1: Scheme reduction valve without lever (5x8 cm; unknown) Photo 2: Scheme reduction valve with lever (5x7,5 cm; unknown) Date: 1946 Keywords: Pressure control, diagrams, valves

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Size: 2225px × 3144px
Photo credit: © BNA Photographic / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: