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  2. Georg Fischer (company) - Wikipedia

    en.wikipedia.org/wiki/Georg_Fischer_(company)

    Georg Fischer (company) Georg Fischer (abbreviated GF) comprises four divisions GF Piping Systems, GF Building Flow Solutions (since November 2023), GF Casting Solutions, and GF Machining Solutions. Founded in 1802, the corporation is headquartered in Switzerland and is present in 45 countries, with 187 companies, 76 of them production facilities.

  3. 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. In automatic control terminology, a control valve is termed ...

  4. Shutdown valve - Wikipedia

    en.wikipedia.org/wiki/Shutdown_valve

    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.

  5. 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]

  6. Piping and instrumentation diagram - Wikipedia

    en.wikipedia.org/wiki/Piping_and_instrumentation...

    A piping and instrumentation diagram (P&ID) is defined as follows: A diagram which shows the interconnection of process equipment and the instrumentation used to control the process. In the process industry, a standard set of symbols is used to prepare drawings of processes. The instrument symbols used in these drawings are generally based on ...

  7. Which states are voting on legalizing weed? Here's where ...

    www.aol.com/states-voting-legalizing-weed-heres...

    Nebraska, North Dakota, South Dakota and Florida voters will see marijuana on their ballots. And in Massachusetts, where medical and recreational marijuana is already legal, voters will be ...

  8. List of valves - Wikipedia

    en.wikipedia.org/wiki/List_of_valves

    Pinch valve, for slurry flow regulation and control. Piston valve, for regulating fluids that carry solids in suspension. Piston valve (steam engine) Plug valve, slim valve for on–off control but with some pressure drop. Solenoid valve, an electrically actuated valve for hydraulic or pneumatic fluid control.

  9. AOL Mail - AOL Help

    help.aol.com/products/aol-webmail

    Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.