</font><font color="blue" class="small">( I do NOW feel that had I just ordered simple NPTF hoses with male ends and adapters as required I MIGHT have hoses in my hand now instead of questions in my head as to why I don't have the hoses in my hand.)</font>
Maybe, maybe not regarding the hoses in your hand now. You would, however, have no problem correctly aligning the end fittings. Here is something on hoses I found in one of my reference sheets:
<font color="red"> Twisting a high-pressure hose only 7 degrees may reduce its service life up to 90%. When hose installation is straight, allow enough slack in the hose line to provide for length decreases, which occur when pressure is applied. If hose assemblies are too short to permit adequate flexing, service life will be reduced.
Hose can elongate by 2% or contract by 4%, depending on hose construction. Length contraction will occur under pressure impulses. Routing must take this into account.</font>
</font><font color="blue" class="small">( Anyway, although NPT threads are commonly used, after reading up on them as well as other type connections, it really does seem like they are inferior, at least in the theoretical sense, to the other fitting type available today. )</font>
Theoretical only in the eyes of professional associations who would like to standardize on the more expensive JIC. From a practical standpoint, for this application they (NPTF or NPT) are definitely the way to go.
If they are so inferior then why are they still commonly in use today? You Kubota tractor uses them on all its cylinders and valves. When properly used they present no problems. As long as they are readily available and easily configurable and still do the job, they will continue to be widely used.
