Water pump

I'm not sure it matters much. Most fixtures are derated to about a gallon a minute. Higher pressure will pass more water, higher volume not so much.

jeff467 wrote:
I am going to replace my 32 year lold water pump. Is it better to g get a pump that is rated for 3.0 gpm and 55psi or 3.5 com and 45 psi?

You want a pump that has variable speed with 5.0. this will eliminate the "rapping" loud noise when ever the pump is runnning so you don't wake every body up in the middle of the night.

I would rather have more pressure and less volume. You want to conserve volume used in a trailer, generally speaking, unless you always have sewer hookups.

I'm thinking the lower flow rate which would enable the pump to operate at more of its maximum. If the pump has too high a capacity it will not operate smoothly at the lower flows. I guess unless it is a `smart' pump.

Depends on what you want..little more flow or a little more pressure

32 year old pump....great life span
Probably was only 2.5 gpm at 45 psi