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2. Vacuum ejector - Wikipedia

   en.wikipedia.org/wiki/Vacuum_Ejector

   vacuum pump. A vacuum ejector, or simply ejector is a type of vacuum pump, which produces vacuum by means of the Venturi effect. In an ejector, a working fluid (liquid or gaseous) flows through a jet nozzle into a tube that first narrows and then expands in cross-sectional area. The fluid leaving the jet is flowing at a high velocity which due ...

3. Plug nozzle - Wikipedia

   en.wikipedia.org/wiki/Plug_nozzle

   Plug nozzles belong to a class of altitude compensating nozzles, much like the aerospike, which, unlike traditional designs, maintains its efficiency at a wide range of altitudes. [1] Similar to the garden hose example, plug nozzles use a shaped rocket nozzle with a poppet-shaped plug to allow the pattern of the rocket exhaust to be changed.

4. Nozzle - Wikipedia

   en.wikipedia.org/wiki/Nozzle

   A nozzle is often a pipe or tube of varying cross sectional area, and it can be used to direct or modify the flow of a fluid (liquid or gas). Nozzles are frequently used to control the rate of flow, speed, direction, mass, shape, and/or the pressure of the stream that emerges from them. In a nozzle, the velocity of fluid increases at the ...

5. Piping and plumbing fitting - Wikipedia

   en.wikipedia.org/wiki/Piping_and_plumbing_fitting

   Copper fittings for soldered joints. Pipe fittings: 1) Copper (solder); 2) Iron or brass (threaded); 3) Brass (compression); 4) Brass (compression to solder); 5) Brass adapters. PVC fittings. A fitting or adapter is used in pipe systems to connect sections of pipe (designated by nominal size, with greater tolerances of variance) or tube ...

6. Fire hydrant - Wikipedia

   en.wikipedia.org/wiki/Fire_hydrant

   The user (most likely a fire department) attaches a hose to the fire hydrant, then opens a valve on the hydrant to provide a powerful flow of water, on the order of 350 kilopascals (51 psi); this pressure varies according to region and depends on various factors (including the size and location of the attached water main).

7. Glossary of firefighting equipment - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_firefighting...

   Type of control valve for sprinkler systems that is mounted to an outside wall and indicates "open" or "shut" in an indicator window on the valve body. Water curtain nozzle A nozzle designed to throw a fan of water droplets to form a "curtain" in an attempt to reduce the risk of radiated heat igniting a nearby exposure. Also known as Water Wall.