BEST WAY TO INSTALL NEW H2O PUMPS?

[Kurt Horvath]

Just received 2 new Classic Shur-Flo pumps 3.5 GPH 45 PSI for the
Indulagance. In the installation instructions it states that you
should install 2' of flexible high pressure tubing on each side of
the pump. Also it states that the strainers," should not be attached
to any hard pipes."

WWWWEEEEEEEELLLLLLLL, the pumps currently have the strainers mounted
directly to the pumps, and of course the pumps are plumbed directly
to hard plastic pipes.

This has shades of the inverter re-positioning project.

Anybody have any ideas?

The two obvious choices are to replace the existing pump as they are
currently installed. Or add the 2' of flexible tube to the existing
system.

The reason for the flex tubing is to keep vibrations from being
transmitted through the coach plumbing, which does happens to some
extent. With the flex tubing wing nuts, it would be easier to replace
or repair the pumps, than if they were hard pipe plumbed, so that's
one plus for the flex pipes.

Anyway let hear some ideas. Thanks for your time

Kurt Horvath
95 PT-42
10AC

[Kurt Horvath]

Just received 2 new Classic Shur-Flo pumps 3.5 GPH 45 PSI for the
Indulagance. In the installation instructions it states that you
should install 2' of flexible high pressure tubing on each side of
the pump. Also it states that the strainers," should not be attached
to any hard pipes."

WWWWEEEEEEEELLLLLLLL, the pumps currently have the strainers mounted
directly to the pumps, and of course the pumps are plumbed directly
to hard plastic pipes.

This has shades of the inverter re-positioning project.

Anybody have any ideas?

The two obvious choices are to replace the existing pump as they are
currently installed. Or add the 2' of flexible tube to the existing
system.

The reason for the flex tubing is to keep vibrations from being
transmitted through the coach plumbing, which does happens to some
extent. With the flex tubing wing nuts, it would be easier to replace
or repair the pumps, than if they were hard pipe plumbed, so that's
one plus for the flex pipes.

Anyway let hear some ideas. Thanks for your time

Kurt Horvath
95 PT-42
10AC

[freewill2008]

Kurt - Keep the filter attached to the pump. By all means do
whatever it takes to use the flexible lines. Run the flexible lines
to the pump/filter assembly. The lines don't hafta be all of 2 feet
to make things quiter and allow easy removal if needed. The hard
part is finding the flexible line, but Shurflo will be glad to sell
you some in a kit.

Bob Griesel '84 FC31 WLII WA

--- In WanderlodgeForum@yahoogroups.com, "Kurt Horvath"
wrote:
>
> Just received 2 new Classic Shur-Flo pumps 3.5 GPH 45 PSI for the
> Indulagance. In the installation instructions it states that you
> should install 2' of flexible high pressure tubing on each side of
> the pump. Also it states that the strainers," should not be
attached
> to any hard pipes."
>
> WWWWEEEEEEEELLLLLLLL, the pumps currently have the strainers
mounted
> directly to the pumps, and of course the pumps are plumbed directly
> to hard plastic pipes.
>
> This has shades of the inverter re-positioning project.
>
> Anybody have any ideas?
>
> The two obvious choices are to replace the existing pump as they
are
> currently installed. Or add the 2' of flexible tube to the existing
> system.
>
> The reason for the flex tubing is to keep vibrations from being
> transmitted through the coach plumbing, which does happens to some
> extent. With the flex tubing wing nuts, it would be easier to
replace
> or repair the pumps, than if they were hard pipe plumbed, so that's
> one plus for the flex pipes.
>
> Anyway let hear some ideas. Thanks for your time
>
> Kurt Horvath
> 95 PT-42
> 10AC
>

[Pete Masterson]

Awhile back, I installed a new ShurFlow 5.7 variable speed pump on my
coach. I used large loops of 3/4" PEX from the hard gray plastic
pipe. The strainer is attached to the pump. One loop of PEX comes
from the hard connection, makes a large loop and terminates at the
input of the strainer. The pump output goes through a second large
loop of PEX and attaches to the previously existing gray plastic
pipe. The reason for having a flexible connection is that the
vibration of the pump(s) can eventually loosen the plumbing
connections with a hard, inflexible hook up.

Since the variable speed pump did not require the pressure tank, this
resulted in a considerable simplification of the plumbing as compared
to the original dual pump and pressure tank set up. The only
difficulty I experienced is that the 3/4" PEX required a fairly large
radius loop to avoid pinching. 1/2" PEX would have been much easier
to work with in the space available. (But the instructions suggested
3/4" for the 5.7 variable speed pump.)

I have some photos of the installation, but unfortunately, I'm not on
my usual machine for Internet access and I can't post 'em at this time.

Pete Masterson
'95 Blue Bird Wanderlodge WBDA 42
aeonix1@...
On the road at Idaho Springs, CO



On Aug 22, 2008, at 8:48 PM, Kurt Horvath wrote:

> Just received 2 new Classic Shur-Flo pumps 3.5 GPH 45 PSI for the
> Indulagance. In the installation instructions it states that you
> should install 2' of flexible high pressure tubing on each side of
> the pump. Also it states that the strainers," should not be attached
> to any hard pipes."
>
> WWWWEEEEEEEELLLLLLLL, the pumps currently have the strainers mounted
> directly to the pumps, and of course the pumps are plumbed directly
> to hard plastic pipes.
>
> This has shades of the inverter re-positioning project.
>
> Anybody have any ideas?
>
> The two obvious choices are to replace the existing pump as they are
> currently installed. Or add the 2' of flexible tube to the existing
> system.
>
> The reason for the flex tubing is to keep vibrations from being
> transmitted through the coach plumbing, which does happens to some
> extent. With the flex tubing wing nuts, it would be easier to replace
> or repair the pumps, than if they were hard pipe plumbed, so that's
> one plus for the flex pipes.
>
> Anyway let hear some ideas. Thanks for your time
>
> Kurt Horvath
> 95 PT-42
> 10AC
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

[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