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  2. Level control valve - Wikipedia

    en.wikipedia.org/wiki/Level_control_valve

    A level control valve or altitude control valve is a type of valve that automatically responds to changes in the height of a liquid in some storage system. A common example is the set of ballcocks in a flush toilet, where each stage of the flush cycle is actuated by the emptying or filling of the tank.

  3. Water level (device) - Wikipedia

    en.wikipedia.org/wiki/Water_level_(device)

    A water level device showing both ends at the same height. A water level (Greek: Aλφαδολάστιχο or (υδροστάθμη) [Alfadolasticho]) is a siphon utilizing two or more parts of the liquid water surface to establish a local horizontal line or plane of reference.

  4. Process flow diagram - Wikipedia

    en.wikipedia.org/wiki/Process_flow_diagram

    Controllers like Level Control or Flow Control; Isolation and shutoff valves; Maintenance vents and drains; Relief and safety valves; Flanges; Process flow diagrams of multiple process units within a large industrial plant will usually contain less detail and may be called block flow diagrams or schematic flow diagrams.

  5. Float switch - Wikipedia

    en.wikipedia.org/wiki/Float_switch

    A float switch is a type of level sensor, a device used to detect the level of liquid within a tank. The switch may be used to control a pump, as an indicator, an alarm, or to control other devices. One type of float switch uses a mercury switch inside a hinged float. Another common type is a float that raises a rod to actuate a microswitch.

  6. Industrial process control - Wikipedia

    en.wikipedia.org/wiki/Industrial_process_control

    Historical milestones in the development of industrial process control began in ancient civilizations, where water level control devices were used to regulate water flow for irrigation and water clocks. During the Industrial Revolution in the 18th century, there was a growing need for precise control over boiler pressure in steam engines.

  7. List of valves - Wikipedia

    en.wikipedia.org/wiki/List_of_valves

    Gas pressure regulator regulates the flow and pressure of a gas; Heart valve: regulates blood flow through the heart in many organisms; Hydrodynamic vortex valve: a passive flow control valve that uses hydrodynamic forces to regulate flow; Larner–Johnson Valve: needle control valve often in large sizes used in water supply systems