How To Fix A Crackrd Pool Filter

JamesW

My opinion is that there is no acceptable gear up for a cracked filter.

Does anyone have any methods that they recall would provide a skilful fix?

JohnT

A rubber repair would likely exceed the cost of a new filter, and very, very few people, fifty-fifty professionals, would have any idea how to become most such a repair. Because of that, the risk of shrapnel and the fact that the filter has already cracked in one case, I'1000 on the no repair side.

ZcottD

I could see patching a pocket-size fissure for a season and trying to make information technology work if a new filter just wasn't in the upkeep. Use a water proof, potent epoxy. I wouldnt want to patch it with anythign that could go clogged in the plumbing if information technology failed.

Jimrahbe

James,

Bomb Disposal Dominion # 1 says "no to croaky filter repairs"

I'm with you on this one...

Jim R.

Bama Rambler

I agree 100%. One time the vessel is compromised there's virtually no way to repair it. Even if information technology could be repaired the cost of the repair would exceed the cost of a new vessel.

My policy is to never recommend whatever repair of a cracked filter vessel, no matter how small the cleft seems to be. There are lots of things that can be repaired, just a definite crack isn't i of them.

CJadamec

Here's a lil fun math next time somebody wants to repair a crack in a pressure level vessel.

Lets say average filter pressure is 15psi. So for every foursquare inch of surface surface area of filter housing there is 15 pounds of force pushing out on it. There are 144 square inches in every square foot.

15 x 144 = 2160 pounds of forcefulness per square foot.

In a 20" sand filter I'thou going to estimate (no real dimensional measurements taken) there is roughly fifteen square anxiety of surface area. That's based on the assumption of a 20" diameter cylinder 24" alpine.

And so that un assuming little thing out by everyones puddle is containing well-nigh 30,000 pounds of force. But the likely hood of the whole filter shattering all at once is pretty slim so that 30k number is pretty meaningless.

The meaningful number is that 2160 number. Its not and then unheard of for a big piece say effectually 1 square human foot in size to come of in a failure propagated by a cleft. What ever happens to exist inside near 24" of that slice when information technology lets go is going to get hit with about a ton of forcefulness. That's enough to knock a grown homo down and pause all kinds of expensive pool equipment.

Pressure vessels are not toys.

zea3

Since y'all are dealing with a vessel designed to withstand pressurization up to a defined point, any cracks that occur without having reached that pressure limit indicate a structural failure of the vessel. It is very rare for a filter under normal operation to exist pressurized to the extent of failure, and you would more than likely see a catastrophic failure (explosion) rather than a crack. When you see a small cleft in a filter vessel it is likely a issue of prolonged UV exposure, abuse (such equally striking information technology with a hammer to loosen stuck pieces) or a manufacturing defect that has weakened over time. Nevertheless it was acquired, the structural integrity of the vessel has been compromised and cannot exist restored.

If the vessel has cracked prior to reaching the limits of its pressurized chapters, why would a fiberglass or epoxy patch which has not been pressure tested at all be seen equally a safe repair?

Supplant the filter.

JoyfulNoise

I also vote NO to fixing it with a patch. Simply likewise dangerous. Yes, a new filter is expensive. But so is a hospital stay from a fracture skull and concussion, damaged equipment and/or an injured eyewitness suing y'all for personal liability.

pooldv

In that location is a reason why pool filters accept these types of warning labels on them and in the manuals. I don't know how many people have died from malfunctioning pool filters only I'm sure it isn't nothing.

THIS FILTER OPERATES UNDER HIGH Pressure level
When any part of the circulating system, (e.g., closure, pump, filter, valve(due south), etc.), is serviced, air can enter
the system and become pressurized. Pressurized air can cause the tiptop closure to separate which can
result in severe injury, death, or property damage. To avoid this potential hazard, follow these instructions:

This filter must be installed past a qualified puddle serviceman in accordance with all applicable local codes
and ordinances. Improper installation could result in death or serious injury to pool users, installers, or
others and may also crusade harm to property.

Do not operate the filter until you have read and empathize clearly all the operating instructions
and warning messages for all equipment that is a role of the pool circulating system. The following
instructions are intended as a guide for initially operating the filter in a general puddle installation. Failure
to follow all operating instructions and alarm messages can outcome in property impairment or astringent
personal injury or death.

Never exceed the maximum operating force per unit area of the organization components. Exceeding these limits
could effect in a component declining under pressure. This instantaneous release of energy can cause the
filter to dissever and could cause astringent personal injury or death if they were to strike a person.

Richard320

I say no.

It's a pressure vessel.

I wouldn't trust epoxy and fiberglass wrapped around the outside of a croaky propane tank, either

jblizzle

I too vote that they should never be repaired. Just not something that many homeowners would exist able to do remotely safely, and I am not sure whatsoever professionals would endeavour either.

tim5055

In a quondam life and in a milky way far, far abroad I was a DOT certified to conduct hydrostatic testing on SCUBA cylinders. A crack in a,pressure vessel is cause for firsthand condemnation. It should be removed from service immediately.

While SCUBA cylinders operate in the 2250 - 3500psi range, I have personally seen the results of a catastrophic failure. In one case the entire front end wall of a store was destroyed. In another case the person filling the tank (a friend) had just submerged the tank in a water bath when it let get. The h2o did absorb near of the force, simply he lost virtually a tertiary of his hand.

Pressure vessels are not toys.

needsajet

Agreed, non repairable and must exist removed from service and disabled immediately.

cfherrman

One thing to retrieve is different materials react differently to overpressure, pvc piping will shatter and explode with shrapnel while abs pipe just splits, or vice versa.

I'chiliad still non fixing a pressure vessel, and the steel ones that might have oil in them, such equally a air compressor tank, don't well or cut as it might be a bomb as well.

BattleOfYakima

Awesome posts nigh the math/science/logic in play too every bit the pros (none yet) and cons (repair toll greater than replacement, unsafe/illegal, risking farther impairment to home/equipment/life, if it failed in one place more are coming) just especially grateful for this mail that I believe helps those less familiar with the relevant science achieve a common sense answer for themselves:

I say no.
It's a pressure vessel.

I wouldn't trust epoxy and fiberglass wrapped around the outside of a cracked propane tank, either

mikefamig

I agree with the consensus not to repair a cracked filter example if the damage has affected the structural integrity of the case. But it you had something that didn't weaken the instance yous might be able to plastic weld it. For instance if you took a sand filter and drilled a one/four" hole in it I think that I could probably patch it up with a hot soldering iron. Especially if you take a piece of plastic scrap every bit donor textile and can get to the damage both inside and out. But a crack that is spreading might exist incommunicable.

Mike.

chiefwej

Stripped threads on a pressure approximate could be repairable, harm to the filter casing itself, not and so much.

mariane

Last summer our filter housing adult a scissure starting from the lip border/top and ~3" long near the seam. It was fifteen years old. Looked all over the net for methods of patching the leak. We tried the fiberglass patch, hot soldering atomic number 26, plastic weld, marine epoxy, JBWeld. Information technology stopped the leak for just a few hours or slowed information technology down considerably. The fiberglass patch on both the exterior and within failed. We limped thru each dissimilar attempt at patching for several days, only running the pump for several hours a solar day until we gave up. Needless to say nil worked then we shut it downward for the summertime in Mid August since we were headed on vacation out west. We bought a replacement filter on Craig's list before nosotros left simply could non use it since the guys laid the filter on its side and rolled it to the automobile. Sand in the valve regulator (if that's what it'south called). This year, cleaned information technology all up and the replacement works slap-up. A friend took the sometime cracked filter housing and plans on making it a planter. Probably the only thing its good for. LOL

And then, long story short, no utilise trying to gear up the crack. Information technology won't work.

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