Pump Flojet Quad 4406?

Almot wrote:
SoundGuy, you are right. The pump is mounted on the sound board - particle board "box" over the wheel well. But... I played with it in different ways, and the sound wasn't much quieter even when I held it in my hands, with no sound boards attached. I think I'll just evict it into some outside box, my stay is measured in weeks and months at a time. When I'm standing in the shower, feeling that horrible vibration with bare feet - this is not my idea of relaxing.

You'd know better than I since it's your pump but if you take a look at my pics you'll see how I mounted my own Shurflo Revolution to a piece of 3/4" plywood which in turn sits atop a thick piece of foam. Next I discovered that adding more soft water hose to the input side of the pump made little difference but adding a loop of it to the output side made a HUGE difference. I've got 25' in there as I used a 25' length of potable water hose for the purpose but I'm pretty sure that 15' would be sufficient. It does however have to be at least that long in order to dampen pump vibration and prevent it from radiating out to the hard wall PEX to which it eventually connects. This technique does work, so much so that I had to add a light to my pump circuit so I'd know when the pump was running. In the still of the night I can hear when the pump is running it but there's anything else such as a fan running in the camper I can't hear it at all. All the other methods of quieting a water pump in any of the trailers we've owned over the years haven't been anywhere near as effective as this method just described ... it really does work. :B