Manual Control Valve

The working principle of regulating valve  

In the automatic control of modern factories, the regulating valve plays a very important role, the production of these factories depends on the correct distribution and control of flowing media.  These controls, whether energy exchange, pressure reduction or simple container feeding, require some final control element.  

The regulating valve acts as a variable resistance in the pipeline.  It alters the turbulence of process fluids or in  

Manual control valve  

Laminar flow provides a pressure drop caused by a change in valve resistance or "friction".  This pressure reduction process is often referred to as "throttling".  For gases, it is close to an isothermal adiabatic state, and the deviation depends on the non-ideal degree of the gas (joule-Thomson effect).  In the case of liquids, pressure is consumed by turbulent flow or viscous friction, both of which convert pressure into heat energy, resulting in a slight increase in temperature.  

The common control loop consists of three main parts. The first part is the sensor, which is usually a transmitter.  It is a device that can be used to measure the process parameters to be adjusted, such as pressure, level or temperature.  The output of the transmitter is sent to the regulating instrument, the regulator, which determines and measures the deviation between the given value or expected value and the actual value of the process parameters, and one by one sends the correction signal to the final control element, the regulator.  The valve changes the flow rate of the fluid to achieve the desired process parameters.  

Control valve belongs to the control valve series, the main role is to adjust the medium pressure, flow, temperature and other parameters, is the process loop in the final control components.