Installing a new SureFlo water pump...

[Pete Masterson]

In my installation, I connected 3/4" PEX tubing to the existing plastic pipe. To manage the elbows that were removed, the tubing makes large loops from the existing pipes to and from the pumps. (About 20-24" of PEX was used on either side of the pump). This gradual loop does not seem to affect the pump output. I measure 65 psi at the outside faucet near the hook ups when the pump is operating.

3/4" PEX is more trouble to work with than 1/2" (it doesn't bend as easily or in as tight a loop) -- but I recommend using it with the in and out sides of the pump.

Pete Masterson

'95 Blue Bird Wanderlodge WBDA 42

El Sobrante CA

"aeonix1@mac.com"

On Jul 3, 2008, at 11:23 AM, David Brady wrote:

I checked and Shurflo specifies that the Shurflo Smart
Sensor Extreme 5.7 gpm water pump should have
at least 18 inches of elbow free tubing both at the inlet
and at the outlet. 

To quiet the pump even further I mounted it using a Jabsco
vibration pad kit, part number 43990-0058. These legs
provide much more vibration dampening than the original
Shurflo legs. With the Jabsco legs, the pump is pretty quiet.

David Brady
'02 LXi, NC

David Brady wrote:

Ryan,

A call to Shurflo might be worth it regarding its use with the
pressure tank. The installation instructions are pretty clear
in that there shouldn't be any elbows, or other obstructions,
within x distance from the pump outlet. These kinds of
obstructions can reflect the water pressure tricking the pump
into thinking that the water line is pressurized (when it's actually
only the pressure in the pressurized tank). You may end up
with pressure oscillations if you keep the pressure tank. Give
it a try. If you have oscillations, then remove the pressure
tank.

David Brady
'02 LXi, NC

Ryan Wright wrote:

Thank you for the responses. I ordered the 5.7 from pplmotorhomes, and
the screen/filter for it. Look forward to installing this. I'm going
to go through and tighten any hose clamps I can find before
installation, just to be safe.

I do think I'll keep the pressure tank. I usually keep the pump off,
only turning it on when necessary. The pressure tank allows me to wash
my hands and flush the toilet a couple of times without turning the
pump on, which is nice, especially in the middle of the night.

Appreciate the replies!

-Ryan
'86 PT-40 8V92

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