Plumbing Help

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 sketches to 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
gallery?

Joe

"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 sketches to 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
gallery?

Joe

A couple ideas to try, both use a section of hose. One is expanding the
16mm ID hose around the 19mm OD barb by dipping the hose end in boiling
water for a minute. The other is to get a hose adapter. Check out a
Laguna display at a large LFS (a small LFS might have too small a Laguna
display and not carry enough of their parts). Other pond equipment
suppliers may have the parts I'm thinking of. Because of the variation
in pump fittings and hose diameters, manufacturers have these universal
connectors or a series of adapters for the range you are looking for.
Laguna in particular has 3 quick-click connectors which have a stepped
tang for 3 hose sizes. If one has the two steps you need, just cut off
the quick-click portion. More expensive than an adapter, but less work
than a lathe. Do give the hot water a try. This is quick cheap and
effective. hth
--
www.NetMax.tk

"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

"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

"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

"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