I've got a Hayward Perflex DE filter that's developed two cracks in the
lower section of the plastic filter housing. The filter's almost years
old, and I'm guessing winter's subzero temps took its toll over the
years while being stored in the unheated garage. At any rate, one of the
cracks is fairly long (about 6"), the rest are only about 1". There's no
leakage at all when full while the water inside is static, but once you
kick on the pump, as expected you get geyser city from the cracks.
I'll have to eat the $179 to replace the part this season, but has
anybody found something for sure that's waterproof and will hold up
under the pump pressure as a band-aid until then? Epoxy? Tar? Something?
Thanks for the help.
Sounds as if you did not drain the filter when
storing it (which makes us wonder how you
were able to move it full of water.) Every
filter I have seen has a drain plug on the bottom
for this purpose.
Carlsbad Springs (Ottawa, Canada)
Tremendous tangential tension forces in tank walls can't be patched in this
If you can find that infinitely-long hose clamp kit, use it as a band to
keep the edges drawn together. Think of an old-fashioned wood barrel with
iron staves. This will handle the force instead of the sealing material.
Sealant will depend on the species of plastic; you must ID that before
knowing what to use.
I'm afraid you have learned an expensive lesson. Unless you run your
pool pump year round, you must evacuate all the water from your pumps,
filter, pool heater or any other components of your pool that are
exposed to the weather because when they freeze in winter, the water
inside expands and creates that crack you now have in your pump. My
Dad forgot to winterize his camping trailer piping by blowing all the
water out of the plumbing piping and the following spring he had
several cracks in the cheapo plastic water pipe of his camping
Alternatively, you can just run your pool pump year round and that
circulating water won't freeze unless it gets down to 40 below zero
where you live.
What's it made of? PVC (dissolves with lacquer thinner or carburetor
spray) can be glued with PVC pipe cement (solvent), but I'd try to
make a large patch and clamp it with some stainless band clamps.
Polypropylene can be melted back together with a soldering iron (use a
brand new, clean tip), using more polypropylene as filler, but
polyethyelene doesn't weld well because it crystalizes. In any case
I'd want to wrap the body in rigid plastic and use pipe clamps. Epoxy
and super glue don't work well on plastics, but you may want to see if
NBond has something.
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