Installing the Shurflo water pump – reduce the noise

Today I installed my Shurflo water pump straight onto the wall of the van but when I switched it on, I couldn’t believe the noise coming from this thing! it transmitted around the full van. I realised that, ideally, these pumps should be mounted on solid floor or on any solid structural members to prevent vibrations being amplified through the rest of the structure. Β Pump noise was something I didn’t think about but after a while of experimenting I came up with a simple and really effective solution:

hang the pump rather than fix down with screws in order to isolate vibrations

pump-and-accumulator
Fiamma 70L tank to Shurflo 30PSI pump into a A20 accumulator before being split for hot and cold feeds

 

See the rest of the water system installation here

 

Here’s how I made my water pump run super quiet

I found a nice trick for mounting the Shurflo diaphragm pump onto any noisy surfaces or any surface that may transmit vibrations round the van. I couldn’t find much on the net about pump mounting techniques with the aim of reducing operation noise and I certainly haven’t seen anyone use this method of mounting. If you have the same problem as i did then maybe you should give this a go…

pump-mounting-board
The first thing I did was to mount the pump on a piece of wood and then fix the wood to the cladding wall with 6 screws. I used a layer of bitumen tape and carpet on each of the 6 screw mounting holes to sandwich between the board and the wall. This reduced transmitted vibrations into the boomy wall a fair amount but it was STILL too noisy…
shurflo-pump-noisy-mounting
I mounted the pump with screws on to some more bitumen tape and square of carpet. STILL too noisy!
shurflo-pump-quiet-mounting
I messed around and tried all sorts of combinations. I held the pump in my hand this thing is surprisingly quiet when it isn’t touching anything. The solution to my noise problem was to hang the pump – why not? it works great. I got rid of the screws and used some electrical wire to hang it

 

Hopefully this helps anyone who has a similar problem with pump vibrations and noise

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