I have a system i want to get some advice on. Large milling machine, hyd system = counterbalance circuit : 2 counterbalance cylinders, pilot operated check valve, pressure reducing valve and a nitroge

We have a two pipe direct return cooling pipe system for a campus of buildings. Each building circuit is the secondary and the circuit between buildings is the primary. There are differing views as to

My understanding is that if the pressure is kept below 15 psi above atmospheric pressure we do not have to certify it as a pressure vessel so that's the reason we need the relief valve

My question is three-fold regarding warm up: How quickly do you allow pumps to be warmed up? I've heard that most OEMs suggest about 100F per hour to allow even thermal expansion.

I am an automotive technician specializing in European performance cars including but not limited to Porsche, Mercedes, BMW, Jaguar, Volvo, etc.. In Houston, Texas the emissions testing for cars now i

I now have a couple of valve manufacturer's brouchers and Cross section drawings which does not have the bottom central trunion, instead there is a step in the side (Just after the seat). The manufact

I have an unusual problem. I am designing a 10 MGD Lift Station and 30

where can i find evidence/proof/article/etc. for the fact that reverse flow (from discharge to suction) can not occure in positive displacement pumps when it is stopped , because of the way it is cons