I am trying to repair a housing for a pool pump. It split under pressure at the
I was thinking of epoxing the housing back together.
Do you think epoxy will withstand a 70 psi load?
Afterwards I was thinking of putting in a couple of screw and reinforcing the
repair. Will that be enough?
Can you drill some small holes and use copper or stainless stell wire
to hold the pump together, and then epoxy the heck out of
everything? The wire would take the tension/stress. The Epoxy would
make it watertight.
I have done repairs like that. CLEAN the parts very well. Use JB weld (the
24 hour stuff, not the quick type) Add fiber glass sheet material across the
crack embedded in the JB weld on inside AND outside. That adds much
I've not heard of this stuff. If you can find it online, please post a link
so we can see what you mean.
Christopher A. Young
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I would be inclined to say plumbers goop would work as good as anything,
after it dries for a few days. Tough stuff.
If you ever tried to take apart something that had used plumbers goop, you
know what I mean. It's slightly flexible, so it does not crack or break
loose like epoxy. It says non pressure applications, but not great for
That's what they say, but for this application I think it's best.
I should have recommended marine goop. With uv protection.
There is also plumbers epoxy, but i don't know about the part about
sticking to various plastics.
Plastic pump sucks.!!!
On Sat, 14 Jul 2012 13:03:36 -0700 (PDT), Deodiaus
Depends on the type of plastic. Some can be welded with heat, others
will not take adhesive or epoxy at all. None I would trust with 70
psi running while I was not watching it.
What made it crack? Once repaired, what makes you think it will not
crack again? If the material is old and brittle, it is junk.
Seventy psi is really not a lot of pressure but poor adhesion or brittle
plastic is bound to fail again. Some polymers like polyethylene are
impossible to glue but epoxy wrapped with something like a layer of
fiberglass fabric will give a strong mechanical solution.
epoxy,then use a metal patch with screws,but covered with epoxy for a
better seal and more bond surface area.
epoxy takes a couple of WEEKS to FULLY cure and reach full strength.
the seam failed. that doesn't sound like a "crack".
it's worth a shot if a new pump is expensive.
plus,he didn't say whether the pump is "old" or relatively new.
(but out of warranty)
I'd try to find out if others have had similar seam failures in that model
of pump. Maybe he can persuade the MFG to replace it at their expense.
Maybe there's a hidden "extended warranty".
Yes, actually. If the seam was the parting line of the mold it was
probably a weak point. If it is a two piece unit that was gasketed
closed, it would not be a seam.
The photo did not tell much of a story to be sure exactly what
I flipped the diverter valve from "Waste" to "Backflush" without shutting down
the pump. WHile doing this, the pressure inside shot up.
BTW, the unit is 17 years old, so maybe the plastic has weathered.
I was thinking of fixing this a different way looking at other designs in the pool store. I was thinking of taking two pieces of wood plates about 2 inches bigger than the housing and putting them on both sides (pancaking). I would run 6 long bolts between the housing. THis would apply pressure to keep the crack closed.
Right now, I put a couple of C clamps on it to allow the epoxy to set.
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