CD-22 Bildge Pump Discharge is 1 1/8"

M

mikeporterinmd

New member
I only mention this because I have never heard of 1 1/8" hose, and
I spent a lot, a lot, of energy trying to get 1" sanitation style hose on
the fitting. Duh.

Mike
 
I ran into this issue before and I'll expand a bit: It seems that the industry standard for bilge pump discharge hose (at least for recreational boats) is 1-1/8" diameter hose. Moreover, the most standard hose itself is a stiff, corrugated, non-UV stabilized , thin-walled PVC plastic hose that's commonly sold by the foot, complete with incremental breakaway sections every foot. IMHO the stuff is garbage, completely unsuitable for a hose upon which one's life may someday depend. Luckily C-Dory now uses a more resilient, rubberized type of discharge hose, at least on our 2007 Angler. I went to replace the hose on my old Cruiser that had cracked, and the stuff literally crumbled in my hands! Of the systems on your boat that you should err on the side of heavy-duty/robust/redundant, the bilge pump should be near the top of the list. Later, Mike.
 
I totally agree with Westward about the unsuitability of the cheap plastic corrugated bilge pump hose. Using a good Neoprene hose (which resists gasoline and oil) is much better. The smooth inner walls also don't resist and restrict flows like the cheap stuff, either.

Bilge pumps for our size boats come with two size output ports, 3/4" and 1-1/8", depending on their gph (gallons per hour) output, with the pumps under 1000 gph generally taking the smaller hose, and the 1-1-1/8 for the larger pumps.

Pumps need to regularly checked for performance, cleaned out of debris in their intakes, and checked to be sure the electrical connections are secure and not corroding. The last is an especially hidden problem because of the use of solderless connectors and the presence of bilge water. Solderless connectors should be coated with liquid electrical tape and/or sealed with shrink tubing. Keep all connections up out of the bilge water to every degree possible.

Boats left in the water should have their bilge pumps wired directly to the battery with only a fuse to protect them and their wires from shorts. No switch should intervene that could be left off and leave the boat in jeopardy. Of course, once the battery is dead...................., therefore, somebody has to have an eye out or be checking in on the boat as needed unless tied to shore power to recharge the system.

Just more to think about and check out!

Joe. :thup :teeth
 
Yeah, better pumps and hoses is what started this project. The small
pumps aren't holding up, so I decided to go with a Jabsco "Water Puppy".
It has a 1" outlet. Not sure if this was the best choice since this type
of pump can't run dry. The switch is a "Water Witch". It's gph is
much lower than what a regular bildge pump is rated at, but we also
know those ratings are largely BS. This pump has a beefy 15 amp
motor, so it should throw some water.

I ordered a 1" to 1 1/8" adapter from Defender, so we'll see how it all
works. The pickup is a bronze pickup with a good screen made by
Perko.

I don't believe this setup will remove a huge amount of water from the
boat. But, given this is a CD-22, there aren't a lot of ways for large
amounts of water to enter the boat that any pump will remove. In other
words, if I start taking waves over the stern, no pump is going to
remove that before the boat sinks(1). However, this pump should remove
rain water and spray nicely.

1) Well, there is the human power bucket pump. That can remove
some water!

Mike
 
I have carried Jabsco water puppies on my cruising boats, as moderate volume pumps. They are wonderful pumps, but only 6 to 7 gallons a minute. I used them to transfer fuel (diesel, with a nitrile impellor, or de water the dinghy if there was a lot of water, or to substitute for the generator water pump when it failed). For a back up bilge pump, I like the old diaphragm Jabsco pump, without a pressure switch. They will run dry and be used like a "shop vac" for water. The pumps which use 1 1/8" tubing run from 26 to 35 gallons a minute (or so they are rated, at zero head). I agree that for the small boats, most of the time the 6 gallons a minute is OK, but you also need a large volume pump, we keep a "3700 Gal per hour"--1 1/2" discharge pump with battery clips for emergencies, when large amounts of water need to be moved.

I sure agree with the corregated hose--it is not worthy of being on a boat. I adapt the pump to a re-enforced hose when ever possiable.
 
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