Suction Center for Metering Pump

I vote for B, but how would the differences among A, B, and C be significant?

I 'd say the same. The difference is negligible. After a bit of research on my side this seems to be the definition of the center of the suction line when in a horizontal arrangement.

Hi JBK,

Can you see through from A to C if so they are the same port (sorry if I am stating the glaringly bleeding obvious).

B doesn't look like a port!

Is the port on the opposite side the outlet?

Just a thought but could A B & C be connected and b be a relief valve.

Sorry it's just more questions.

Best of luck,

John

"hydraulic calculation" of what?

What is a "suction center"?

Thought I'd throw this in for kicks: The Suction Center,

I suggest the suction flange for suction side calculations and the discharge flange for the discharge side BUT, if the pressure drop in that sharp access bend turns out to be significant then include it and go for B.

First thing, then. calculate the drop in that entry bend, to see is it matters. Next is to check the height above the suction level to ascertain Net Positive Suction Head (NPSH).

Suction center (as well as discharge center) is naturally point B, that is where the suction (as well discharge) takes place.

Talking of suction, the distance BC could be anything depending up on the individual design, few centimeters or few meters (if there a threaded nipple instead a flange).

What is important is the suction head, which is the static suction head above the center line (of the pump/piston) minus the pipe friction (including the friction losses of all fittings).