I am not satisfied with the existing bilge pump system in my 36. It
consists of a manual Whale Gusher, operated from a lever in the
cockpit, with a 1.5" intake and outflow to a thru hull low by the
transom and a Rule 800 on an auto switch with a 3/4" outflow to a
thru hull high on the topsides.

Improving the outflow from the Rule Auto is not an option and a
larger pump pushing more water thru the 3/4" out flow won't do
anything. Ideally I would keep the small Rule in place and run a new
1.5" outlet from a new high output auto switched pump to its own
thruhull but the routing doesn't look doable. So I am considering :

1: Removing the Whale gusher and installing a large auto switched
bilge pump to the existing manual pump thruhull.

2: Installing a check valve on the manual pump intake foot and Wye
in the large pump outlet after that and push the outlet water thru
the manual pump.

3: Remove the manual pump intake foot and use the large auto
switched centrifigal as the intake for the manual pump and push the
water thru the manual pump.

I would appreciate your comments and suggestions.

Just did what you are about to do.
I used a 750 gph with a ¾" outlet for deep bilge
3700 gph 11/2 " outlet at higher level
30 Gusher manual
2 buckets
Each pump has its OWN separate intake and discharge hose.

Not much I to suggest except do a group search. It aint rocket science.
Lots of valuable info found here if take time to look and read.
However....I do recommend using

1 ½ " pvc "SUCTION" hose. Its found anywhere for about
$1.20-$1.80/ foot. Go to a farm supply or contractor supply or home
depot. Do not even think about saying marine bilge hose! The wine
industry use it too except that stuff is USDA okay and lots more
expensive. "Trash pump suction hose" is what ya want. Its very tough
with hard plastic spiral. Very smooth inside. Also clear. But some
folks would say that algae will grow inside. Has not happened to me.
Besides I like the idea of a fast visual assessment to find an
obstruction in the system.. Don't forget the vented loops.
Still Bobing thanks to suction hose.

"Bob" wrote in message
oups.com...
However....I do recommend using

1 ½ " pvc "SUCTION" hose. Its found anywhere for about
$1.20-$1.80/ foot. Go to a farm supply or contractor supply or home
depot. Do not even think about saying marine bilge hose! The wine
industry use it too except that stuff is USDA okay and lots more
expensive. "Trash pump suction hose" is what ya want. Its very tough
with hard plastic spiral. Very smooth inside. Also clear.
************

I was not able, in many googlings, to find this stuff ("Trash pump suction
hose") easily.

However, a couple of potentials surfaced when I went to the ads at the side,
speaking of suction hose.

Are either of these the sort of thing you're speaking of?

http://www.hosecraftusa.com/model.php?modelUID=262
http://www.cat-vacuum-collectors.com...acuum-hose.htm
(G-vac or B-flex)

Better, if you have a HD part number, can you share it?

The costs shown in what I could see suggests it's close to what one would
pay for top quality marine sanitation hose (not clear, of course), i.e. 4-6
a foot. Is that your experience? Or, better stated, can you share specific
walk-in (vs shipped) sources for this stuff?

I'd use it both in discharge (1.125) on the electrics, and suction (1.5) on
the whale Gusher manuals, replacing all the old hose present currrently, if
I could find it inexpensively.

Thanks.

L8R

Skip, wanting to get rid of the cheap corrugated stuff on the boat now, and
not wanting to spend as much as the braided clear poly waterline costs

--
Morgan 461 #2
SV Flying Pig KI4MPC
http://tinyurl.com/384p2 The vessel as Tehamana, as we bought her

"Twenty years from now you will be more disappointed by the things you
didn't do than by the ones you did do. So throw off the bowlines. Sail
away from the safe harbor. Catch the trade winds in your sails. Explore.
Dream. Discover." - Mark Twain

Most clear hoses are not rated for below-waterline connections...so be
careful where you use non-"marine grade" hoses.

--
Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://shop.sailboatowners.com/books...ku=90&cat=1304

Peggie Hall wrote:
Most clear hoses are not rated for below-waterline connections...so be
careful where you use non-"marine grade" hoses.

Hi Peggy:

You raised a question I have been think about lately. When people say
for "below the water line" applications, just what does that mean? 100%
immersion 100% of the time such as hose connected to an under the water
through hull or a low spot in a hose run that allows pooled liquid.
Does that also apply to a bilge intake and discharge hose which are
only seldom and intermittently immersed yet live "below the
waterline" in a normally dry area?

I realize that installations vary and some bilges are a rather
disgusting wet place but on the other hand, there are the painted white
guys who dust their bilge out every few months. In my case, the bilge
hose I use is that " PVC suction hose" I mentioned. It is reinforced
with a PVC coil, smooth inside, with wall thickness about 1/4." Very
smooth and extraordinarily stout.

But on my boat, the bilge discharge side carries water for only a few
seconds a few times each day depending on what's happening. If at the
dock, months go by without the bilge tripping on. The suction side may
be moist but not immerged for more than a few minutes.

What concerns should I have regarding pvc used in a relatively dry
place under the water line? Come to think about it I think I sit
"below the water line" most of the time. The big problem I have is
adding more combustible stuff to the boat. But hey, the boat is nothing
but plastic and wood anyway. Poof!

Bob

Skip G.

I'll check on manufacturing and part number RE the pvc suction hose and
will post here in a few days. However, I hope Peggy H. responds to my
"below the waterline" question and her concerns about pvc. I hope I do
not have to rip out my new bilge system.
Bob

Bob wrote:

You raised a question I have been think about lately. When people say
for "below the water line" applications, just what does that mean?

If the thru-hull is below waterline at least 50% of the time--especially
while the boat is at rest (wave, wake, tide), it would be wise to
consider it to be a below-waterline thru-hull. If it's only submerged
when the boat is heeled--which would also imply "only when you're
aboard," it's not.

That said, I would not connect ANY clear hose to any thru-hull. 'Cuz
IMO, whether it's hoses or anything else, you can never regret erring on
the side of caution. And fwiw, I've NEVER seen any clear bilge discharge
hose. Boat builders are very cost conscious...if there weren't a good
reason to stick with marine-grade bilge pump hose, they'd use something
else that's cheaper. And also fwiw, I wouldn't use corrugated hose for
anything on a boat, anywhere.

But that's what I'd do. It's your boat...your choice.


--
Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://shop.sailboatowners.com/books...ku=90&cat=1304