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"I wanted to say my GW Pool Forum friends say "No" to backwash valves"

You pretty much answered the question yourself. There is no rule AGAINST valves on this filter. We have found there is no reason for one. We cannot discharge DE legally so this filter is a great way to get cartridge convenience and DE filtration. When you add a valve reduce overall efficiency on the system.

The advantage of this filter is you can break it down and clean it in a total of about 15 minutes. You need to consider where you will discharge the DE if you use a valve. As far as water draining tell him to put a $3 hose bib on the pump discharge and you can use a hose. It's not instant but will serve the purpose.

We don't close pools, but don't you have to drop the water below the tile? you could not do that with a baacwash valve anyway.

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"Also, what seem to be the biggest faux-pas when installing the QuadDE's so I can avoid any isuues. I did read the one post about the installer putting DE in where the cartridges are. I would like to avoid that if possible."

There should be no issue with the install. The usual mistake is on a retrofit as people don't realize that the filter plumbs backwards from a standard cartridge filter.

DE does go in the filter. What do you mean by "putting DE in the cartridges"?

Hey repair_guy,

I realize that you can put a backwash valve on, but I do not want to put DE into our soil. Although our well is 100 feet away, it is very shallow.

A hosebib sounds good to me. Thanks for the suggestion.

This was a quote from you on a person who had issues with their QuadDE. So are you saying as long as the filter is set up as a DE filter, which is the correct way even though it has cartridges, there should be no issues??

"I'm guessing they installed it as a cartridge filter and in turn pumped DE into the insides of the cartridges. When that happens, you will rarely get all of it out of the cartridge pleats after correcting it."

Quote: "How do people who have sand or regular cartridge filters drain their pool down?"

Our setup is as Repair Guy described, there's a hose bibb attached to the discharge pipe coming out of the (cartridge) filter. To date I've never had to drain water out though (pool's about 3 months old). We've gotten a lot of rain this year, but it evaporates out inbetween rains. One time we got nearly 3" of rain in 2 days and it was nearly to the underside of the coping. I thought I'd have to drain some off then, but we didn't get any rain again for weeks so I just let it drift down on its own.

Quote: "How do people who have sand or regular cartridge filters drain their pool down?"

Our setup has a valve between the pump and the cartridge filter. There is also a drain only pipe with its own valve just before that. When we close the valve between the pump and filter and open the valve going to the drain pipe, our excess pool water will drain out. Our equipment pad is also below pool level.

Like tresw, haven't had to drain much in the couple of years we've had the pool...probably less than 5 times.

comkow

Quote "This was a quote from you on a person who had issues with their QuadDE. So are you saying as long as the filter is set up as a DE filter, which is the correct way even though it has cartridges, there should be no issues??

As long as the filter is plumbed as design there are no issues. We're dealing with thinking here. People see QUAD DE cartridge and assume cartridge. Let's face it, as technicians, we rarely read instructions and simply set out to do the job. Just about every guy who has installed the QUAD has installed the first one backwards or started to. The inlet/outlet are reversed from cartridge like a De filter.