Recent content by PuffJr

I know this capability is not available in AutoCAD LT 2006. Does it exist in later versions (which ones), and is it fully functional?

Does anyone know of pressure loss data (preferably K or Cv values) for standard strength (~ sch. 40), butt-welded, reducing fittings? Thank-you.

I am designing a custom vertical air eliminator for use with viscous liquids. Similar units that I have seen all contain a vertical baffle, but there is no consistency as to which nozzle - inlet or outlet - the baffle lies closest. On one hand, it makes sense to exit from the larger chamber...

Why is WN preferable to SO in this case?

OK, then. While I am standardizing with best practice, what projection is recommended for flanged nozzles? I have been using 6", I think.

Yes, on some devices very near the floor, we have half-pipe guards welded to the tank shell. Of course, field welds cause warranty and code compliance (UL 142, API 650) problems...

Tanks contain motor oil, or motor oil component fluids. Anticipated excessive loading would be collision with fork truck, aerial platform, etc.

I have been catching grief for having threaded connections on bulk liquid tanks. The knock on them is that they can easily be broken (with which I agree), and that the breach will be difficult to remediate if a break occurs (which I consider less valid). In my mind, the breakage risk is more a...

I have seen some equations and tables to determine minimum static head for vortex suppression, but I think that they apply specifically to water. I am working with more viscous fluids. Is there a method to evaluate the effect of viscosity?

I am looking at a table of Cv vs. % Build for back pressure regulators. All values are for F sub L equal to .9 What is F sub L?

Big Inch, I disagree. When the pressure at the inlet to the back pressure regulator exceeds the set point, the device opens to divert some flow back to the tank. Thus the inlet pressure is regulated, and consequently so is the pressure at the control valve, downstream from where the back...

To be clear: the BPR is on the branch of tee just past the pump; the BPR dumps back to the tank when pressure exceeds the setpoint.

No, the back pressure regulator is located immediately downstream from the pump, so the inlet and outlet are both very short.

A fluid is stored in a tank, and is fed to a particular process through a few hundred feet of pipe using a PD pump. A v-port ball valve at the process controls incoming flow, and the inlet pressure at the ball valve is limited by a back pressure regulator at the storage tank. The set point of...

nationalpump, hydraulically, I think it works fine. Energy usage and product heating issues are nudging me toward two dedicated pumps, though. In the one pump concept, I know that the pump would recycle while the other process sits idle quite a bit. I see that as a big waste of energy, and...