Noisy pumps

[mocruising]

We have two shower extraction pumps (Used on demand) and a fresh water service pump (High/low pressure cut in cut out) all three very noisy. They are Jabsco 24 v, can anyone recommend an equivalent pump that is quieter.

 

[Steve C Cronin]

Yes, very embarrassing when the neighbours are "environmentalists" aren't they?

 

[Bertramdriver]

We have two shower extraction pumps (Used on demand) and a fresh water service pump (High/low pressure cut in cut out) all three very noisy. They are Jabsco 24 v, can anyone recommend an equivalent pump that is quieter.

If you find an answer to that I'll be interested. When I phoned Jabsco ITT Technical their solution was to build sound proof boxes around the pumps. I planned to do this next spring using a 4mm ply lined with dense polyurethane 10 mm foam sheet covered with foamed fire rated polyurethane to seal it all. Pumps to re mounted on a plywood base sandwiched on foamed polyurethane. Any better ideas are welcome.

 

[Chris_robb_ndota]

If you find an answer to that I'll be interested. When I phoned Jabsco ITT Technical their solution was to build sound proof boxes around the pumps. I planned to do this next spring using a 4mm ply lined with dense polyurethane 10 mm foam sheet covered with foamed fire rated polyurethane to seal it all. Pumps to re mounted on a plywood base sandwiched on foamed polyurethane. Any better ideas are welcome.

Although this sounds ideal, I'd personally be slighlty concerned about overheating issues. I know they don't get that hot, but running continuously the pump bodies do get rather warm, and put them in a confined space for 20 minutes (while pumping out a long shower perhaps) and it *might* be a problem. Might never be an issue though, but worth consideration.

 

[ccscott49]

I had exactly the same problems! with Jabsco pumps. Use whale gulper pumps for the shower drains, very quiet and a Johnson pressure pump, also very quiet (in comparison) I also advise fitting your own pressure switch, an adjustable proper one from ASAP supplies and if you don't have one an 11 litre accumulator, if not larger.
I have been through numerous pumps switches etc etc for my water systems and found these to be best, at the price.

 

[Chris_Robb]

If you find an answer to that I'll be interested. When I phoned Jabsco ITT Technical their solution was to build sound proof boxes around the pumps. I planned to do this next spring using a 4mm ply lined with dense polyurethane 10 mm foam sheet covered with foamed fire rated polyurethane to seal it all. Pumps to re mounted on a plywood base sandwiched on foamed polyurethane. Any better ideas are welcome.

I have the same noisy jobs. However I am not sure that sound proofing internally will work as the noise is actually transmitted down the pipe. I don't know how you silence that.

 

[geem]

I have the ITT Jabsco 24v pump mounted on a plate that it then rubber mounted. The pipe connections are flexible. The box is under the saloon seats. The noise is only just audible. No special acoustic attenuation. We have an 8 litre accumulator also so pump doesn't run too often. The seat bases are heavy marine ply.
If it was noises I would line with engine room quality insulation with the lead liner. Works well on engines!