Copper reducer for raw water

Does anyone see a problem with using this part between the through hull and raw water pump. I have only been able to find these in copper and plastic. The plastic is too restrictive. I'm wondering if copper is too thin. Another option is galvanized pipe. Any thoughts?



http://www.grainger.com/Grainger/VIEGA-PROPRESS-Reducer-1RPV5?Pid=search

I'm trying to hook up 1 1/4" hose on the engine to a 1" through hull. I also have found pipe fittings in brass for about $100 and galv iron for $35. Maybe the brass pipe fittings is the way to go?

Could you do this- 4429K743 from Mcmaster Car, 1 1/4 to 1" brass reducer thread that on to the thru hull then use 4568K242 1 1/4 pipe
cut the threads off one side thread that into the above and then hose clamp the hose to that? If you could find bronze that would even be better. Last time I was at West Marine in Key Largo they had all kinds of bronze fittings

Bronze is superior to brass? I can't thread it on the through hull, but I could get a 1" nipple and attach it with a short piece of hose. That would be a lot stronger than copper. No one makes a push on reducer in bronze, brass or stainless.

Don, Are you saying that CC originally cranked a 1 1/4" hose down on a 1" fitting and it worked?

Yes bronze is prefered on thru hulls I think because it's stronger. That is what is used on the boats we have had. Post a picture of what you have,it's hard to visualize. I think I know what your trying to do,putting a Chrysler into something? I wonder if a Chrysler powered boat just used a 1 1/4 thru hull? Do you have dual thru hulls?

How about this then- link 1 1/4 x 1 you could sweat short pieces of pipe on each end to clamp the hose to. A side to motor b side to thru hull. A good hardware store will have what you need.

That's what it looked like to me, actually it would be more like 3/4 if you go by the inside diameter.   The Vdrive has threaded bushings to get there, the raw water intake had a reducer like the pic.

I'm not a big fan of using special fittings like that. I'm sure it's
ok but if I solder one together I can control the length plus I can
get a replacement anywhere. You can see here where I used a 1" elbow
and short 1" pipe to replace a special hose at the water pump exit.
Now if needed I can get a straight hose at any Autozone instead
of trying to find a 90 degree 1" hose.

Woah, woah, woah... no need to reinvent the wheel here.

Bruce, you should be able to get an off the shelf NPTxhose barb fitting that will attach directly to the pick up. Just gotta do a little measuring.

The way CC did it was to put a union or an elbow (female thread) on the thru hull fitting, then shove the hose on and clamp it down. This stepped up the diameter to a bit beyond 1-1/4" and works (I have this set up on my Skier) though its a bit clunky. Ive been planning to install a NPTxhose barb fitting, but have not gotten around to it.

Judging by the sizes charts Im seeing online, I would guess that the thru hull fitting has a male 3/4" NPT thread on it. Perhaps someone can confirm that. If thats the case, then going to 3/4" female union and then adding one of these fittings *should* work for 1-1/4" hose.

McMaster 5346K94.

Bruce, Ive never encountered one of those brass fittings that was stuck. I dont see why you'd need to take anything apart though. Just get a 90 degree female elbow and put it on the fitting on the left and then install the NPT/hose barb fitting (facing forward).

I guess before I spend more money, I'll see if I can remove the short 1" pipe on the left hand connector. It is not threaded on the end, so I can't simply screw a female end on it and add a nipple to it like Tim suggests, but if that little pipe will come out, Hamilton's Marine sells a through hull fitting that will screw into it on the 1" end and has a 1.25" hose barb. It's an elbow too so will be perfect. I just have not wanted to mess with those old fittings. Tim, if your ears are burning this weekend, you'll know it's me.

We were able to get that nipple off, although it did take some heat. No one has an adapter like that except McMaster Carr. It should work well. Thanks.