How can i obtain the the CV value of a control valve at 100% open, knowing the CV value at 80% open for example?

I have to produce a data sheet for a globe valve in high chloride environment, i want to know if is better a disc in duplex F51 with stellite 6 hard facing or 17-4 PH (AISI 630) hardenable stainless s

I have dozens of in-line relief valves fitted with external springs, these are fitted as Mono pump protection devices. Some of these have been installed for years, they are not on a maintenance progra

I am involved in a project where Customer specifies globe valve vee-reg type disc for throttling service and additionally requests leakage test complying with BS EN ISO 1266, rate A, i.e., NO VISUALLY

We are looking into installing a Variable Frequency Drive for a Boiler Feed Pump. One of the issue is what to do with the minimum flow valve at the pump discharge.