Water pump question

the bear II wrote:
The way you describe your pump matches how the pumps on every RV I've had sound and work.

Sam Spade wrote:
I have never heard one that is silent.

It's not the pump itself that's noisy but the installation which is almost always inadequate. Anyone can prove this to themselves by sitting any one of these pumps on their workbench and running it - very little noise. The trick to having it run just as quietly in an RV environment is a correct installation. ;)

I've owned several RV's and the pumps all sounded as you described yours. The pump will be mounted above the fresh water tank. I have read where a computer mouse pad has been helpful in damping the noise when placed between the pump and mounting surface.

the bear II wrote:
The way you describe your pump matches how the pumps on every RV I've had sound and work.

THIS.
Many sound like a small jack hammer.
I have never heard one that is silent.

The noise can be worse if there is air in the lines. Purge them all to be sure, if you haven't already.

Many are mounted at the back of a side storage bin.

There are several threads on here about this already.

The water pump itself actually doesn't make much noise at all but due to inadequate installation is noticed as very noisy in operation because what little vibration the pump does make radiates out through the water lines connected to it and is amplified wherever these lines may contact the floor, walls, cabinet panels, etc. The key is to isolate both the pump itself and the lines, most particularly the output line. Shurflo's so-called pump "silencer kit" is actually quite ineffective as it consists of just two 3' long braided hoses but to effectively dampen pump vibration the output hose needs to be much longer. 15' will do in most applications, I used 25' and my Shurflo Revlolution is now so quiet in operation I had to add a light to the pump circuit so I'd know when it's running. :B

Silent Water Pump Operation (pics & video).

The way you describe your pump matches how the pumps on every RV I've had sound and work.

With one exception like SCVJeff above mentioned. If you have the faucet on all the way the pump should run continuously. If it's not then an adjustment may be needed.

It will pulse when the faucet or shower handles are partially opened.

Does it run better with the faucet On all the way? Some pumps will cycle on and off to maintain pressure when the flow is too low to run continuous. Variable speed pumps usually just slow down as to not cycle like that.

The pump is usually located in a cabinet or behind a panel.

The pump is silent but can cause noise due to vibration of the pipes. There is a pump silence kit you can buy for around $20.

If it is pulsing there is probably an adjustment screw in the head of the pump.