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  2. Pressure regulator - Wikipedia

    en.wikipedia.org/wiki/Pressure_regulator

    They differ from pressure reducing regulators in that the pressure reducing regulator controls downstream pressure and is insensitive to upstream pressure. [2] It is a normally-closed valve which may be installed in parallel with sensitive equipment or after the sensitive equipment to provide an obstruction to flow and thereby maintain upstream ...

  3. Leslie Controls - Wikipedia

    en.wikipedia.org/wiki/Leslie_Controls

    Because of his dealings with the railroads, he began making oil kindlers for coal trains, and he saw the need for a pressure reducing valve for oil kindlers for coal trains. After purchasing the patent for the Taafel Pressure Regulator in 1899, he developed the first successful pressure valve of its type. [5]

  4. 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 ...

  5. Flow control valve - Wikipedia

    en.wikipedia.org/wiki/Flow_control_valve

    These types of valves are also known as automatic control valves. The hydraulic actuators respond to changes of pressure or flow and will open/close the valve. Automatic control valves do not require an external power source, meaning that the fluid pressure is enough to open and close them.

  6. After Vatican visit, Blinken praises Pope Francis's work on ...

    www.aol.com/news/vatican-visit-blinken-praises...

    U.S. Secretary of State Antony Blinken on Wednesday praised Pope Francis for his work on LGBTQI issues after meeting the leader of the 1.4-billion-member Roman Catholic Church and other senior ...

  7. California mom shot and killed by her 2-year-old; boyfriend ...

    www.aol.com/california-mom-shot-killed-her...

    A California woman was fatally shot by her 2-year-old toddler, leading to the arrest of her boyfriend who is accused of failing to properly store the weapon, Fresno police said this week.

  8. Valve actuator - Wikipedia

    en.wikipedia.org/wiki/Valve_actuator

    The blue valve body is visible in-line with the pipe. The valve actuator opens or closes the butterfly disc of the valve based on electrical signals sent to the actuator. Another valve actuator is visible in the background, with windows to indicate the valve position. A valve actuator is the mechanism for opening and closing a valve. Manually ...

  9. Chilling Google searches lead police to arrest active-duty ...

    www.aol.com/chilling-google-searches-lead-police...

    An active-duty Marine was recently arrested after Google searches led Florida investigators to suspect he murdered a reality TV star and dumped her body in an Alabama pond. Willie Ellington, 20 ...

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