Can I have 2-90degree bends in my pump input?

[Delphinus]

I'm trying to decide how to run, and where to place, my sump return pump (Little Giant 4 -- input pipe size is 1" ).

I would "like" to place the pump in behind my sump, for space reasons. Problem is, the space for the pump to fit in there is barely 8". The pump will fit nicely if it's placed in parallel to the sump, it won't fit at all if it's placed perpendicular (which is the typical arrangement, you want to see the pump input "facing" the direction where the water is coming from..)

Two options I'm considering:

1) Drill the side of the sump, and use 1 90-degree bend from the bulkhead to the pump input.

2) Use the existing bulkhead on the right side of the sump, and use 2 90-degree bends to get from the bulkhead to the pump input.

The advantage to #1 is that the fewer bends on the pump input, the better. But the stand-off pipe will end up being very small, and maybe not long enough to be able to completely dissipate vibration, and pump vibration is not something I want to see on a sump wall.

Option #2 would take care of the length of the stand-off pipe very easily, but is it perhaps not a good idea to have 2 90-degree bends on a pump input? I don't know how much this will restrict the input and I know one should never restrict the input of a pump, only the output.

Not sure which is the "slightly better" or "slightly worse" idea. Opinions please?

Thanks..

[ 04 June 2002, 07:36: Message edited by: delphinus ]