"Harry Muscle" wrote in message
...
"NetMax" wrote in message
...
"Harry Muscle" wrote in message
...
"Joe Crowder" wrote in message
...
I'm doing a little plumbing for my filter system based on some
inspiration
from Netmax's website. OK, I'm stealing it wholesale. I even
printed out
his sket o work from. They say plagiarism is the sincerest
form
of
flattery 8-).

The problem is: I'm working with 3/4" PVC, 3/4" hose barbs, and
3/4"
hose.
Unfortunately, my Ehiem 2026 uses 5/8" (16 mm) ID hose. Of course,
I
missed
that little detail until I had the whole thing built up. At least I
don't
have it all glued together yet. I was at least smart enough to do a
fit
check.

I don't see a way to convert the filter fittings to 3/4" (19 mm),
and
I
have
not been able to find 5/8" hose barbs in PVC. I'm pretty sure I
could
turn
down the 3/4" hose barbs to fit 5/8" hose if I still had access to a
lathe.
The fittings on the filter do not look like they will work with a
bigger
hose, and Eheim does not seem to offer a version that accepts larger
hose.
At this point I am pretty much stumped.

Has anyone else solved this problem? Any suggestions from the
peanut
?

Joe



You might try something that I did for my Fluval 404. Instead of
fitting
the 5/8 ID pipe over something, fit something over it. If the pipe
has
a
5/8 ID than chances are the OD might be close to 3/4, which means a
3/4
ID
vinyl pipe would fit perfectly over it, and over the 3/4 hose barb.
You'll
need something to hold everything together and prevent it from
leaking.
I
tired silicone at first but it sucks at holding plastic together, so I
used
CPVC glue, surprisingly it stick pretty well to vinyl tubing.

Hope that helps,
Harry

Heh heh, I've done this too, but I thought it was a little too
make-shift
to suggest, but now you have opened the subject Harry ). If you can
slip a solid plastic sleeve inside the inner hose, then a hose clamp
around the outer hose will have a better chance of holding it together.
To make this work, the contact area between the 2 hoses should be
something like 3+ inches. If you have to use temperature to fit it
together (heat outer, cool inner before fitting), it will hold together
better. It's still a little make-shift as there really isn't an
adhesive
I know of which can bond to the oily surface of a hose and not crack
with
the flex and vibration (I haven't tried CPVC glue).
--
www.NetMax.tk



This won't help the OP, but I've read that the connections at the filter
(Fluval 404, and probably others too) are a perfect match for 3/4 ID
tubing,
this way you can do away with the supplied tubing all together. The only
downside is the fact that it's a very short barb, so you gotta do a good
job
of clamping it.

Harry


Thanks for the suggestions.

I'll try the hot water idea this weekend. If that doesn't work, I'll check
out the local greenhouse. I think they sell some pond accessories.

I though about glueing the hose pieces together, but this just sound like a
catastrophe waiting to happen. With my luck, I would come home one day to
forty gallons of water on the floor and a busted or seperated hose joint.
I've tried this kind of kludge on metric to english fittings before and was
never satisfied. It always failed after a while. I finally ended up making
a couple of custom brass fitting that I could solder in. That was a very
elegant solution. Unfortunately you need a lathe to pull that kind of
trick.

I'll let you know how it works out.

Joe