BEST WAY TO INSTALL NEW H2O PUMPS?

[Eric Perplies]

The reason for installing the flex lines is to reduce the noise and
vibration of the pumps. My bird has flex lines installed from the
factory. At the end of the flex lines there is a 90 degree fitting
the couples to the strainer and another 90 degree fitting at the
discharge of the pump connected to about 18" of flex tubing.

This last winter both of my 3.5 gpm pumps failed within a month of one
another. I rebuilt one of the pumps but the other of my 3.5 gpm pumps
died. There was a Shurflow booth at the Quartzite RV show. The
Shurflow tech suggested that I would get more flow from the 2.8 gpm
pump in all but open circuit conditions. (I found it hard to belive.)
I chose to install one of the 2.8 pumps next to my good 3.5 gpm pump.
In part because the 2.8 gpm pump was $70 verses $125 for the 3.5 gpm
model.

First I discovered the 2.8 gpm pump was MUCH quieter than my 3.5. I
can only hear the new 2.8 gpm pump when there was silence in the
coach. The 2.8 has an all rubber base instead of just rubber grommets
as the 3.5 gpm pump has. Second, the water flow is actually higher.
I measured the time it takes to fill a 4 gallon pail in both my shower
and in the outside water faucet. The 2.8 gpm pump fills the pail
about 40 seconds faster in both the shower and in the outside faucet.
I rechecked that the correct pump was running and re-ran the tests.
I got the same results the second time.

Since the flow rate is higher, the noise level is MUCH lower and the
cost is about 60% of the 3.5 gpm pump, I have plans to buy a second
2.8 gpm pump next time I am in Q. The only problem with the 2.8 gpm
pump was mounting it. Because the motor is shorter the mounting holes
are about 3/4" closer together. It was well worth the time to drill
and tap two new holes.

Eric Perplies
96' 42' WBWL
currently outside Ft. Wayne, IN