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Injector
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An injector is a system of ducting and nozzles used to direct the flow of a high-pressure fluid in such a way that a lower pressure fluid is entrained in the jet and carried through a duct to a region of higher pressure. It is a fluid-dynamic pump with no moving parts except a valve to control inlet flow.
A- Steam from boiler, B- Needle valve, C- Needle valve handle, D- Steam and water combine, E- Water feed, F- Combining cone, G- Delivery nozzle and co
A- Steam from boiler, B- Needle valve, C- Needle valve handle, D- Steam and water combine, E- Water feed, F- Combining cone, G- Delivery nozzle and cone, H- delivery chamber and pipe, K- Check valve, L- Overflow
Steam injector of a locomotive boiler
Steam injector of a locomotive boiler
Vacuum ejector
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A vacuum ejector, or simply ejector is a type of vacuum pump, which produces vacuum by means of the Venturi effect.
A brass aspirator. The water inlet and outlet are at the top and bottom, respectively; the air inlet is on the side.
A brass aspirator. The water inlet and outlet are at the top and bottom, respectively; the air inlet is on the side.