New Water Pumps

[Gregory OConnor]

the cut in a pipe or the end of a internal fitting cause more
friction than a 90 degree elbow. if water takes a path that doesnt
cross a fitting, that fitting causes no friction loss. If you want
a project make a manual accessable sporlan tank fill bypass. I agree
with you that there is little need for extra valves that may fail.
CCW-BB even includes a row of plumbing valves with logo handles in
their 15 photo 2009 brochure. I guess rich folks like lots of
valves??? But.......... if the backflow device in one pump fails, it
will make the other pump run continiously. the good pump will send
the water thru the bad pump backwards and then resupply the
continiously running pump. the good pump can not build pressure
unless you cut off the circular path.

Greg
--- In WanderlodgeForum@yahoogroups.com, "Kurt Horvath"
wrote:
>
>
>
> After a close look at the original plumbing in the bay with the
water
> pumps, I have decided to remove most of the pipes and keep only
the
> basics.
>
> As per the installation instructions it recommends that there be
no
> restrictive elbows, shut off or check valves, use as few elbows
and
> valves as possible in the first 2 feet after the pump.
>
> Using the ½ I.D. flexible high pressure tubing, cut at 2 ½ feet
for
> each side of the pump will eliminate 4 elbows on each pump, ( my
> coach has 2 pumps, you can run pump #1 or #2, or #1 
together ).
> It also has 4 T valves in the system. I am still trying to decide
> their valor in the greater scheme of things.
>
> If anyone has any thoughts on why they have these cut off valves
on
> each side of the pumps I would like to hear about it. I guess they
> are to shut off water to service the pumps or in case of a leak, I
> just do not see if you would even use them that much.
>
> So that will cut out 6 restrictive devices off each pump, all of
> which are within 12" of the pumps. The exit side of the pumps have
3
> elbows within 3" of each other before they reach the accumulator
> tank.. Speaking of that, the out side of the tank has a couple of
2
> or 3 unnecessary elbows to boot!
>
> If you gently heat any plastic tubing you can make it bend into
any
> shape needed. So that would remove 3 elbows on the out side of the
> accumulator tank, very easy to do, but will it help? It couldn't
hurt.
>
> The cold water dump valve also has enough hardware to open a
pluming
> supply. I will redo that with a little upgrade,
>
> After he BBQ/Toolbox Bay upgrade, it would be nice if the coach
had
> flowing water on the curb side, near the outdoor kitchen. Nothing
> fancy just a practical cold water hose with some kind of head at
the
> end. It will serve 2 uses as a curb side water source and replace
the
> cold water dump valve.
>
> The installation manual also mentions mounting the pumps in a
easily
> accessible location, well the space allotted , is, what it, is.
I'll
> mount the pumps on a 20" X12" piece of good plywood, then bolt
that
> to the outside of the plywood framing that surrounds the toolbox
and
> BBQ shelf.
>
> So with that and the Hydraulic fluid flush and the new 3000psi
switch
> I have to put on the HWH levelers and now you guys got me thinking
> about Coolant filters! All I can say I'm happy Fuel prices are
going
> down @ Flying J. Not much but $3.99 is better than the $4.69 I
paid
> last trip.
>
> Kurt Horvath
> 95 PT-42 WLWB S-60
> 10AC
>