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2. Flow control structure - Wikipedia

   en.wikipedia.org/wiki/Flow_control_structure

   A flow control structure is a device that alters the flow of water in a stream, drainage channel or pipe. As a group these are passive structures since they operate without intervention under different amounts of water flow and their impact changes based on the quantity of water available.

3. Tap (valve) - Wikipedia

   en.wikipedia.org/wiki/Tap_(valve)

   Also, the tortuous S-shaped path the water is forced to follow offers a significant obstruction to the flow. For high pressure domestic water systems this does not matter, but for low pressure systems where flow rate is important, such as a shower fed by a storage tank, a "stop tap" or, in engineering terms, a "gate valve" is preferred.

4. Automatic faucet - Wikipedia

   en.wikipedia.org/wiki/Automatic_faucet

   10. A liquid flow control device as claimed in claim 1 wherein the outlet has a thermo-responsive means capable of cancelling the operation of the solenoid operated valve which controls the hot water. 11. A liquid flow control device as claimed in claim 1 wherein the switches are actuated by air pressure means provided by a bellows. 13.

5. Valve - Wikipedia

   en.wikipedia.org/wiki/Valve

   These water valves are operated by rotary handles.. A valve is a device or natural object that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways.

6. Water management device - Wikipedia

   en.wikipedia.org/wiki/Water_management_device

   Water management devices are water meters which, at once provide accurate data on water flow and water consumption levels, and can be programmed to control water use at household- or business-level.

7. Sleeve valve (water) - Wikipedia

   en.wikipedia.org/wiki/Sleeve_valve_(water)

   Conventional control valves can typically control flow or pressure in the 20% to 80% range. Additionally, unlike conventional control valves the sleeve valve increases flow incrementally, i.e. 10% increase in stroke leads to a 10% increase in flow. Sleeve valves are adaptive to system or consumer requirements. The sleeve valve is designed to ...