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2. Pressure regulator - Wikipedia

   en.wikipedia.org/wiki/Pressure_regulator

   Pressure regulator for domestic water supply. Outlet pressure is set with the blue handwheel and shown on the vertical scale. A water pressure regulating valve limits inflow by dynamically changing the valve opening so that when less pressure is on the outside, the valve opens up fully, and too much pressure on the outside causes the valve to shut.

3. Backflow prevention device - Wikipedia

   en.wikipedia.org/wiki/Backflow_prevention_device

   In water distribution systems, water is normally maintained at a significant pressure to enable water to flow from the tap, shower, or other fixture. Water pressure may fail or be reduced when a water main bursts, pipes freeze, or there is unexpectedly high demand on the water system (for example, when several fire hydrants are opened).

4. Faucet aerator - Wikipedia

   en.wikipedia.org/wiki/Faucet_aerator

   Shape the water stream coming out of the faucet spout, to produce a straight and evenly pressured stream; Conserve water and reduce energy costs; Reduce faucet noise; Increase perceived water pressure (often used in homes with low water pressure); sometimes described as a pressure regulator or flow regulator

5. Reduced pressure zone device - Wikipedia

   en.wikipedia.org/wiki/Reduced_pressure_zone_device

   A reduced pressure zone device (RPZD, RPZ, or RPZ valve) is a type of backflow prevention device used to protect water supplies from contamination. RPZDs may also be known as reduced pressure principle (RP), reduced pressure principle backflow prevention devices, [1] [2] reduced pressure zone assemblies (RPZA), [3] or reduced pressure principle ...

6. List of valves - Wikipedia

   en.wikipedia.org/wiki/List_of_valves

   Gas pressure regulator regulates the flow and pressure of a gas; Heart valve: regulates blood flow through the heart in many organisms; Hydrodynamic vortex valve: a passive flow control valve that uses hydrodynamic forces to regulate flow; Larner–Johnson Valve: needle control valve often in large sizes used in water supply systems

7. Major water main break in Edison, New Jersey leaves ... - AOL

   www.aol.com/major-water-main-break-edison...

   Joshi, in a 7:45 p.m. update, said an insertion valve was being put into the broken water main line to "curtail more of the water flow and will allow crews to begin repairing."