Control valve selection and specification is critical to achieving good control loop and process performance ...

Flow management is a really important part of many industries. Being able to precisely control the flow of liquids and gases is crucial for making industrial processes as efficient, safe, and ...

vpdd = Δp (qmax) Δp (qmin) where: vpdd=valve pressure drop decay Δp (qmax)=valve pressure drop at maximun flow Δp (qmin)=valve pressure drop at minimun flow Using the vpdd calculation, the control ...

Turbiville noted two major valve type distinctions: 1) automated on/off valves; and 2) automated control valves. He noted that, when considering automated control valves, end users should be sure to ...

2. Monsen, Jon, An Insider’s Guide to Installed Gain as a Control Valve Sizing Criterion, Flow Control, May 2015, pp. 22-25. 3. Monsen, Jon, Modern Tools for Sizing Control Valves & Actuators, ...

Choked Flow in Control Valves Choked flow in control valves is a subject of serious concern for industrial users. The term is usually associated with destructive process conditions that can damage ...

Stephen Hall discusses the golden rules for design CONTROL valves are used to control several important process parameters: flow rate, level, temperature, pressure, and composition. This month I am ...

The vendor was called to investigate. A little checking indicated the valve was being cycled by the control system between 0% and 10% open at a rate of 250,000 times a year. The very high cycle ...