Gentlemen:
The drain sump of a tank has to be as small as possible, so that when the tank is completely drained, amount of sludge remained in the sump is minimum. On the other hand, if the drain sump is not deep enough, the suction line of a drain pump will start sucking air before the liquid...
Can the check valve sit right on the end-suction centrifugal pump discharge flange, or there must be a certain straight pipe run in between? How many Ds? Before or after encreaser? Any specific reference guidelines document? Thank you.
