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- Flow_control_valve abstract "A flow control valve regulates the flow or pressure of a fluid. Control valves normally respond to signals generated by independent devices such as flow meters or temperature gauges.Control valves are normally fitted with actuators and positioners. Pneumatically-actuated globe valves and Diaphragm Valves are widely used for control purposes in many industries, although quarter-turn types such as (modified) ball, gate 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 Control Valves. The hydraulic actuators will 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 the valve. Automatic control valves include: pressure reducing valves, flow control valves, back-pressure sustaining valves, altitude valves, and relief valves. An altitude valve controls the level of a tank. The altitude valve will remain open while the tank is not full and it will close when the tanks reaches its maximum level. The opening and closing of the valve requires no external power source (electric, pneumatic, or man power), it is done automatically, hence its name.Process plants consist of hundreds, or even thousands, of control loops all networked together to produce a product to be offered for sale. Each of these control loops is designed to keep some important process variable such as pressure, flow, level, temperature, etc. within a required operating range to ensure the quality of the end product. Each of these loops receives and internally creates disturbances that detrimentally affect the process variable, and interaction from other loops in the network provides disturbances that influence the process variable.To reduce the effect of these load disturbances, sensors and transmitters collect information about the process variable and its relationship to some desired set point. A controller will then process this information and decides what must be done to get the process variable back to where it should be after a load disturbance occurs. When all the measuring, comparing, and calculating are done, some type of final control element must implement the strategy selected by the controller. 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.".
- Flow_control_valve thumbnail Pl_control_valve.jpg?width=300.
- Flow_control_valve wikiPageID "912904".
- Flow_control_valve wikiPageLength "4121".
- Flow_control_valve wikiPageOutDegree "29".
- Flow_control_valve wikiPageRevisionID "655243611".
- Flow_control_valve wikiPageWikiLink Actuator.
- Flow_control_valve wikiPageWikiLink Actuators.
- Flow_control_valve wikiPageWikiLink Ball_valve.
- Flow_control_valve wikiPageWikiLink Butterfly_valve.
- Flow_control_valve wikiPageWikiLink Category:Valves.
- Flow_control_valve wikiPageWikiLink Check_valve.
- Flow_control_valve wikiPageWikiLink Diaphragm_Valves.
- Flow_control_valve wikiPageWikiLink Diaphragm_valve.
- Flow_control_valve wikiPageWikiLink Flow_measurement.
- Flow_control_valve wikiPageWikiLink Flow_meter.
- Flow_control_valve wikiPageWikiLink Fluid.
- Flow_control_valve wikiPageWikiLink Gate_valve.
- Flow_control_valve wikiPageWikiLink Globe_valve.
- Flow_control_valve wikiPageWikiLink Globe_valves.
- Flow_control_valve wikiPageWikiLink Pneumatic.
- Flow_control_valve wikiPageWikiLink Pneumatics.
- Flow_control_valve wikiPageWikiLink Pressure_reducing_valve.
- Flow_control_valve wikiPageWikiLink Pressure_regulator.
- Flow_control_valve wikiPageWikiLink Relief_valve.
- Flow_control_valve wikiPageWikiLink Signaling_(telecommunications).
- Flow_control_valve wikiPageWikiLink Signalling_(telecommunication).
- Flow_control_valve wikiPageWikiLink Temperature_gauge.
- Flow_control_valve wikiPageWikiLink Thermometer.
- Flow_control_valve wikiPageWikiLink Valve.
- Flow_control_valve wikiPageWikiLink File:Pl_control_valve.jpg.
- Flow_control_valve wikiPageWikiLinkText "Flow control valve".
- Flow_control_valve wikiPageWikiLinkText "automatic flow control".
- Flow_control_valve wikiPageWikiLinkText "flow control valve".
- Flow_control_valve wikiPageWikiLinkText "flow valves".
- Flow_control_valve wikiPageWikiLinkText "regulator".
- Flow_control_valve hasPhotoCollection Flow_control_valve.
- Flow_control_valve wikiPageUsesTemplate Template:Reflist.
- Flow_control_valve subject Category:Valves.
- Flow_control_valve type Hydraulic.
- Flow_control_valve type Technology.
- Flow_control_valve comment "A flow control valve regulates the flow or pressure of a fluid. Control valves normally respond to signals generated by independent devices such as flow meters or temperature gauges.Control valves are normally fitted with actuators and positioners.".
- Flow_control_valve label "Flow control valve".
- Flow_control_valve sameAs Stromventil.
- Flow_control_valve sameAs Flu-reguliga_valvo.
- Flow_control_valve sameAs Virtaventtiili.
- Flow_control_valve sameAs m.03p8yq.
- Flow_control_valve sameAs Q356235.
- Flow_control_valve sameAs Q356235.
- Flow_control_valve wasDerivedFrom Flow_control_valve?oldid=655243611.
- Flow_control_valve depiction Pl_control_valve.jpg.
- Flow_control_valve isPrimaryTopicOf Flow_control_valve.