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  2. Pilot-operated relief valve - Wikipedia

    en.wikipedia.org/wiki/Pilot-operated_relief_valve

    The pressure at which the control pilot relieves is the functional set pressure of the PORV. When the pilot valve reaches set pressure it opens and releases the pressure from the dome. The piston is then free to open and the main valve exhausts the system fluid. The control pilot opens either to the main valve exhaust pipe or to atmosphere ...

  3. Pilot valve - Wikipedia

    en.wikipedia.org/wiki/Pilot_valve

    Pilot valves are useful because they allow a small and easily operated feed to control a much higher pressure or higher flow feed, which would otherwise require a much larger force to operate; indeed, this is even useful when a solenoid is used to operate the valve. Pilot valves are often used in critical applications (e.g., emergency and SIS ...

  4. Flow control valve - Wikipedia

    en.wikipedia.org/wiki/Flow_control_valve

    Pneumatically-actuated globe valves and diaphragm valves are widely used for control purposes in many industries, although quarter-turn types such as (modified) ball and butterfly valves are also used. Control valves can also work with hydraulic actuators (also known as hydraulic pilots). These types of valves are also known as automatic ...

  5. List of valves - Wikipedia

    en.wikipedia.org/wiki/List_of_valves

    The sheet has a solid end and a flow-through end; sliding it from one position to the other opens or stops the flow. Also called sliding blind valve; Outflow valve: regulates flow and pressure, part of cabin pressurization; Pilot valve: regulates flow or pressure to other valves; Petcock, a small shut-off valve

  6. How to watch the ‘Rudolph the Red-Nosed Reindeer’ NBC ...

    www.aol.com/entertainment/rudolph-red-nosed...

    You can stream Rudolph and Frosty's Christmas In July on AMC+ (or via the AMC+ Amazon Prime Video add-on, which offers a free trial). Watch on Amazon Prime Video More ways to watch NBC live ...

  7. Does college football have a flag-planting problem? 'Our ...

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    After this year’s 34-3 win over the Sooners, Texas players carried out a more specific flag-planting routine at midfield. They stabbed the flag pole through a No. 6 Oklahoma jersey belonging to ...

  8. Control valve - Wikipedia

    en.wikipedia.org/wiki/Control_valve

    A control valve is a valve used to control fluid flow by varying the size of the flow passage as directed by a signal from a controller. [1] This enables the direct control of flow rate and the consequential control of process quantities such as pressure, temperature, and liquid level.

  9. Taylor Swift Made a Major Change to Her Look 13 Years Ago ...

    www.aol.com/taylor-swift-made-major-change...

    Although 13 years have passed, Swift continues to own the bangs, while making subtle changes to them. Recently, on the second night of her final U.S. tour stop on Nov. 2, she took the stage in a ...

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