Oil, natural gas wellhead valves of the nominal pressure level for the API2000psi, 3000psi, 5000psi, 10000psi, 15000psi, 20000psi; nominal diameter of DN46 ~ 228mm (113/16in ~ 9in); temperature rating

Can someone tell me why most piping diamgrams show drilled holes in bolted flanges straddling the vertical centerline, so as to not have a hole at top dead center?

I understand that since I cnat locate that end plate with the power beyond port, that I can drill and tap a port for it. Does anyone know of any tip or tricks that might keep from ruining this setup.

I have a problem with my domestic heating system. what happens is that the cold water supply from the header tank in the loft is also being heated when the boiler system is running - what we have effe

I always use 1.5, no matter what pipe size, length. Today, when I read a report prepared by another engineering firm, they put 0. what is you guys' suggestion?

Virgin PC/ABS's MFI value is 7 and PC/ABS molded part's value is 10. My customer insists on that increasing from 7 to 10 shows that there is a problem with my process and material was decomposed.

I am fairly new to the hydraulic business and need to create a hydraulic lift that has warm up loop that also raises the lift at the speed i choose based on the power given to the pump. and lowers slo

A precipitous drop in the house water pressure sent me to check the pressure on the bladder tank - only 20 psi on system with a pressure switch set for 30-50 psi.