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  2. Hans Baumann (inventor) - Wikipedia

    en.wikipedia.org/wiki/Hans_Baumann_(inventor)

    Hans D. Baumann is a German-American inventor and engineer. He has registered over 200 patents and produced 105 publications. He has registered over 200 patents and produced 105 publications. He is known internationally as a valve specialist and is an expert on aerodynamic noise of gases and he is a frequent contributor to the NEWSMAX Magazine ...

  3. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  4. Flow control valve - Wikipedia

    en.wikipedia.org/wiki/Flow_control_valve

    The most common final control element in the process control industries is the control valve. The control valve manipulates a flowing fluid, such as gas, steam, water, or chemical compounds, to compensate for the load disturbance and keep the regulated process variable as close as possible to the desired set point. [1]

  5. 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.

  6. List of valves - Wikipedia

    en.wikipedia.org/wiki/List_of_valves

    Valves can be categorized also based on their function: Check valve or non-return valve, allows the fluid to pass in one direction only; Flow control valve, to maintain and control a variable flow rate through the valve; Poppet valve, commonly used in piston engines to regulate the fuel mixture intake and exhaust; Pressure-balanced valve

  7. Texas Gov. Greg Abbott unveils ‘horrific realities’ billboard ...

    www.aol.com/news/texas-gov-greg-abbott-unveils...

    Texas Gov. Greg Abbott plans to strategically place 40 billboards across Central America and Mexico with messages warning illegal migrants of the “horrific realities” they face in their ...

  8. How do people catch bird flu? - AOL

    www.aol.com/news/people-catch-bird-flu-120042836...

    (Justin Sullivan/Getty Images) As bird flu infections rise in dairy cattle and chickens, human cases are ticking up too, leaving many people to wonder whether they might be at risk from this ...

  9. 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. Valves are technically fittings, but are usually discussed as a separate category. In ...