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2. Gate valve - Wikipedia

   en.wikipedia.org/wiki/Gate_valve

   Gate valve. An electric multi-turn actuator on a gate valve. A gate valve, also known as a sluice valve, is a valve that opens by lifting a barrier (gate) out of the path of the fluid. Gate valves require very little space along the pipe axis and hardly restrict the flow of fluid when the gate is fully opened. The gate faces can be parallel but ...

3. Christmas tree (oil well) - Wikipedia

   en.wikipedia.org/wiki/Christmas_tree_(oil_well)

   Christmas tree (oil well) Oil well Christmas tree. In petroleum and natural gas extraction, a Christmas tree, or tree, is an assembly of valves, casing spools, and fittings used to regulate the flow of pipes in an oil well, gas well, water injection well, water disposal well, gas injection well, condensate well, and other types of well.

4. Floodgate - Wikipedia

   en.wikipedia.org/wiki/Floodgate

   Jet flow gate, similar to a gate valve but with a conical restriction prior to the gate leaf that focuses the water into a jet. They were developed in the 1940s by the United States Bureau of Reclamation to allow fine control of discharge flow without the cavitation seen in regular gate valves. Jet flow gates are able to handle heads up to 150 m.

5. Tainter gate - Wikipedia

   en.wikipedia.org/wiki/Tainter_gate

   Tainter gate being constructed, in 1936, on the upper Mississippi River, Lock and Dam No. 7 (Onalaska Dam), La Crescent, Minnesota (USACE) Stevenson Dam Tainter Gate on the Housatonic River in Connecticut. The Tainter gate is a type of radial arm floodgate used in dams and canal locks to control water flow.

6. Gate (hydraulic engineering) - Wikipedia

   en.wikipedia.org/wiki/Gate_(hydraulic_engineering)

   Gate (hydraulic engineering) In hydraulic engineering, a gate is a rotating or sliding structure, supported by hinges or by a rotating horizontal or vertical axis, that can be located at an extreme of a large pipe or canal in order to control the flow of water or any fluid from one side to the other. It is usually placed at the mouth of ...

7. List of valves - Wikipedia

   en.wikipedia.org/wiki/List_of_valves

   The inside of an extremely large butterfly valve Duplex ball valve Three check valves in corrosion-resistant Hastelloy Stainless steel gate valve. Valves can be categorized into the following types, based on their operating mechanism: Ball valve, for on–off control without pressure drop. Ideal for quick shut-off, since a 90° turn completely ...