There's a rule of thumb that says a flow meter requires ten diameters of straight pipe upstream, and five diameters of straight pipe downstream in order to provide "clean" flow at the meters inlet/outlet. This rule is often printed explicitly in the installation manuals for commercially...
The basic rule for the design of threaded joints is that six turns of thread engagement provides very nearly the maximum strength possible, as described here:
http://www.gizmology.net/nutsbolts.htm
Presumably this applies when the materials for the male and female thread have similar...
Greetings -
I have an ultrasonic flow meter (UFM) in an 18" pipe that I need to calibrate. I have a NIST-traceable smooth-approach orifice (SAO) that I intend to use for this purpose. I am wondering what's required to assure fully developed/unperturbed flow through each of these devices.
The...
