Pump Discharge - Centerline or Tangential? 5

[HomeMadeSin]

From a pump user's standpoint, which is preferred and why? Most chemical (read: ANSI, ISO) pumps are of centerline discharge design (the discharge flange center is in the same vertical plane as the pump's centerline). The theory, or at I've been told, is that it allows for:
(1) self-venting or free passage of air
(2) pipe designers prefer working with centerlines
(3) equally distribute pipe weight to both feet

However, you lose efficiency by diverting the flow away from its desired (tangential) path. Most small and general industrial pumps are tangential.

Any other considerations?

 

[PUMPDESIGNER]

Jet1749,
Ahhh,the wonderful art of engineering,
Applying theory in novel situations,
Satisfying to the soul.

While I strive constantly to rid myself of some of the labor (and subsequent satisfaction) by systemetizing the knowledge to the point where I do not have to work so hard.

Good when possible I suppose.


PUMPDESIGNER

 

[25362]

Thinking aloud it appears that since hot pumps (above 100^oC) are preferentially centerline supported to allow for symmetric thermal expansion of the wetted parts without excessively abrading the wearing rings, in what manner would a centerline discharge nozzle, and connections, affect free thermal expansion on hot pumps ?

Using quark's idea on adding post-scripts:

Believe it or not the human body has 656 muscles. A smile puts in commission 17, and a frown 43.