Vibration reduction for high head application

[snackpack]

Evening everyone

I'm looking to take some vibration out of my return line from my sump back up to the tank. It's currently hard plumbed with 1.5" PVC all the way up. I'm lifting directly up from a basement sump to a first floor DT. The PVC is supported by Holdrite insulated clamps in 3 locations. I believe the main source of vibration is the downwards pressure of the pipe itself pressing the pump downward into the bottom glass of the sump. Ideally I think I'd like to go with a short section of flexible hose, but I've not found anything that's even remotely flexible. Home Depot vinyl in 1.5" may as well be as rigid as PVC. Braided vinyl obviously that much worse. BRS sells silicone but only up to 1".

Anyone have a recommendation?

 

[Kodski]

look for hot tub tubing or spa tubing. It’s more flexible than vinyl tubing. It’s usually white and easily available from HD and other box stores. I’d recommend just ordering some silicone tubing from BRS, but make sure you also order some hose clamps to go with it. In higher pressure situations the silicone tubing can fail. It’s not a bad idea to replace it once a year. I personally had some come off a very my snug hose barb. Luckily I was home and noticed immediately. Once I put a plastic hose clamp on it I didn’t have that issue again.

 

[SpyC]

look for hot tub tubing or spa tubing. It’s more flexible than vinyl tubing. It’s usually white and easily available from HD and other box stores. I’d recommend just ordering some silicone tubing from BRS, but make sure you also order some hose clamps to go with it. In higher pressure situations the silicone tubing can fail. It’s not a bad idea to replace it once a year. I personally had some come off a very my snug hose barb. Luckily I was home and noticed immediately. Once I put a plastic hose clamp on it I didn’t have that issue again.

silicone tubing is much cheaper from amazon.

 

[BairCorals]

With that much head pressure idk if I would trust soft hose. But here's a pad you could try

Sound Dampening Pad

These sound dampening pads work best with heavy external pumps where there is significant vibration being transferred from the pump to the surface the pump is mounted too. Made from foam pads with a ribbed rubber lining. Dimensions: 3.75" x 3.75" x 1"

www.bulkreefsupply.com

 

[Rusty_L_Shackleford]

look for hot tub tubing or spa tubing. It’s more flexible than vinyl tubing. It’s usually white and easily available from HD and other box stores. I’d recommend just ordering some silicone tubing from BRS, but make sure you also order some hose clamps to go with it. In higher pressure situations the silicone tubing can fail. It’s not a bad idea to replace it once a year. I personally had some come off a very my snug hose barb. Luckily I was home and noticed immediately. Once I put a plastic hose clamp on it I didn’t have that issue again.

I used to work at an lfs and we used the flexible pace spa tubing for all our installs. It could be tough to find at home depot or lowes sometimes, we used to buy it from poop supply places but you might have to get a 25 or 50 foot roll.

 

[melanarus]

Following along. I’m having similar issue. I have t’d a 1 1/4” PVC from the pump into 2 3/4” PVC up about 7 feet above the pump, while still in the basement.

 

[melanarus]

Thanks for the suggestions on this thread. I used 1.5’ of silicone tubing attached to a barb valve on the pump and it has made a huge difference in the noise on the return lines