Could somebody explain (if possible) how a two-stage pressure-reducing valve (PCV) can allow to avoid choked flow through it, when upstream pressure is 10000 mbarg (10 barg) and downstream pressure is

Forgive me if this is a newbie question.  "Piston valves" were the preferred type in steam engines.  Why were they unsuitable for internal combustion?  Can modern materia

Can some one provide the standard/Spec which specifies Fugitive Emmission Test Requirement and Test Method?

It is pretty clear that the trap isolation valve should be a full opening ball valve and the bypass/kicker valve should be a plug valve or other valve capable of throttling the flow.

I have not been able to confirm with the plant operators whether or not any sealant was used on the threads. I expect that none was used. Because of the outlet connection needed, only certain position

I work at a facility building valves. I'm being asked to meet differing fugitie emission standards. there are 3 that I know of, and I'm trying to get a handle units of measurement. I think this has

When a supplier is saying their valves are chrome plated, would the chrome be thick enough to be classified as Hard chrome? What chrome specs are used in that industry? What exactly is 'flash chrome

Energy Performance Certificates have been introduced as mandatory to help improve the energy efficiency of buildings within the United Kingdom to meet EU standards. If you are buying or selling a home