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  2. Johannesburg Emergency Water Supply - Wikipedia

    en.wikipedia.org/wiki/Johannesburg_Emergency...

    Rand Water announced that a water shut down would begin on Friday, 13 December 2024 until the evening of Monday, 16 December. [18] Water supply would be disrupted because of work being done the operations areas that is fed from the Eikenhof Pump Station. The disruption will affect 60% of the city.

  3. Shutdown valve - Wikipedia

    en.wikipedia.org/wiki/Shutdown_valve

    A shutdown valve (also referred to as SDV or emergency shutdown valve, ESV, ESD, or ESDV; or safety shutoff valve) is an actuated valve designed to stop the flow of a hazardous fluid upon the detection of a dangerous event. This provides protection against possible harm to people, equipment or the environment.

  4. The post Taps have run dry across Johannesburg, South Africa, in an unprecedented water crisis appeared first on TheGrio. Taps have run dry across Johannesburg, South Africa, in an unprecedented ...

  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 ...

  6. Solenoid valve - Wikipedia

    en.wikipedia.org/wiki/Solenoid_valve

    The valve can use a two-port design to regulate a flow or use a three or more port design to switch flows between ports. Multiple solenoid valves can be placed together on a manifold. Solenoid valves are the most frequently used control elements in fluidics. Their tasks are to shut off, release, dose, distribute or mix fluids.

  7. Tap (valve) - Wikipedia

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

    Cone valves or ball valves are another alternative. These are commonly found as the service shut-off valves in more-expensive water systems and usually found in gas taps (and, incidentally, the cask beer taps referred to above). They can be identified by their range of motion—only 90°—between fully open and closed.

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