Black PVC pipe from well to geothermal heat pump carries vibrations from pump motor

[tk2kewl]

I have a geothermal heat pump which is fed well water from a 20 gpm well. the well is connected to an expansion tank and then to the heat pump. The 1-1/2 in black pvc pipe from the well to the expansion tank is attached to my floor joists with simple U-clamps and it vibrates quite a bit. The vibrations can be heard at varying volume levels throughout the house. I've done some googling for some clamps that would deaden the vibrations but have not come up with much other than this: http://www.erico.com/newsDetail.asp?newsid=38. Maybe that is all it will take but I imagine something better exists. Anyone have any ideas?

[catnhatnh]

1. OK how about this....

Surround the PVC with slip on urethane insulation sleeves. At each support joist fasten an appropriately sized O-ring to the PVC with an automotive hose clamp. Slightly tension the O-ring and fasten to the joist with an industrial wiring staple. As a safety, loosely attach a loop of mechanics wire through the staple and hose clamp...

I have seen o-rings used on Volvos as exhaust system hangers and think this might work.

[tk2kewl]

2. good thought

kind of similar to another idea i had which was to get a bunch of these solid rubber bungees and loop them around the pipe, remove the hooks and screw them into the sides of the joists through the hook holes allowing the pipe to hang down into the crawl space

[catnhatnh]

3. You're on the right track...

...I would still add the slip on insulation for the extra dampening.