How to Install a Pentair QUAD D.E. Filter (also, same process for a Clean & Clear Plus Filter)

The Pentair Quad D.E. Filter is one of the best D.E. Filters on the market today. It combines the fine filtration of a D.E. Filter with the ease of cleaning presented in a Cartridge Filter. I will go over the installation of the Quad D.E. Filter in this article.
The first thing you need to know about the Quad D.E. Filter is that the Inlet and Outlet are reversed from your standard D.E. Filter. For that reason that is why the push/pull backwash valve will not work on this filter and if you have one installed on your old filter it should be removed. When talking to Pentair it is perfectly fine to install the Quad D.E. Filter without a backwash valve. The ease of cleaning the filter makes backwashing unnecessary and backwashing will shorten the lifespan of the cartridges.
If you do want to install a backwash valve, you will need to install a filter specific one found here:
Pentair 263080 FullFloXF High Performance Backwash Valve with Inlet on Top:
www.amazon.com...
Let me focus on an important detail that many installers miss. I have had a few comments on KZbin from homeowners who have had professionally installed Quad D.E. Filters with blown up or exploded cartridges. The reason; the installer installed it with the Inlet and Outlet reversed. Or to explain it better, installed it without reversing the Inlet and Outlet. The Inlet is from the pump and on a Quad D.E. Filter it is located on the top and the Outlet - water going to the heater or pool return is on the bottom. Again, the D.E. Filter that is being replaced has the Outlet on top and Inlet on bottom.
To give me extra time when I am cementing PVC pipes I like using the Weld-On Pool Heavy 746 Gray Glue 13569. It is carried by my local supplier and should be stocked in your local pool store or plumbing supply store. You can also use Weld-On 711 which is similar to the 746. You can read about the difference on their website:
weldon.com/solv...
weldon.com/solv...
A PVC cutting tool is essential for installation. I tried the cheaper ones and they tend to break after a few jobs. Basically if you are only doing one install at your own pool then order this cheap pair -expect it to last for at least this one job.
Superior Tool 37116 One Handed PVC Cutter: www.amazon.com...
For a longer lasting an more durable pair of cutters like the ones I used in this video, try:
Superior Tool Company 37115 PVC Pipe Cutter - Heavy Duty Cutter up to 2-1/2-Inch O.D.
www.amazon.com...
You can also just use a hacksaw if you prefer. A hacksaw is recommend on older PVC pipe to prevent snapping.
I always like to do a dry fitting run thru first before I start to cement the PVC pipes together. I also use a Sharpie to mark the angles of any elbows so that when I do put everything together it will line up nicely.
Set time is always debated when I do an install video. I like to let everything set for 24 hours. So I wait until the next day to turn everything on. This eliminates any guessing as to when the cement is dry. After 24 hours it will be plenty dry. Problems arise when you turn everything on too soon.
One note about the PVC pipe size. On this pool which was constructed in the 1970's they used 1 1/2” PVC pipes. If you also have 1 1/2” PVC pipes you can go bigger, meaning moving up to 2” PVC pipes. But this is also dependent on the pool return lines. In this pool it has two ½” stub pipe return lines in the deep end. This means that there was no real good reason to go up to 2” PVC since the return lines restrict the flow. But if your pool has standard return lines, going up to 2” PVC will help a bit with the water flow.
Other Videos in this series:
Quad DE Filter Cleaning: • Cleaning a Quad DE Fil...
Pentair QUAD D.E.® Cartridge Style Filter Overview: • Pentair QUAD D.E.® Car...
How to Add D.E. to a QUAD D.E.® Cartridge Style Filter: • How to Add D.E. to a Q...
Pentair QUAD D.E.® Cartridge Style Filter Assembly: • Pentair QUAD D.E.® Car...
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[@oldschoolisnewschool]

I just fixed by pool with the use of this video. I had a bad back wash piston. I had replaced and lubed the valve o-rings. That was not working so I just took the piston out and did a bypass all together. That worked. Becase of your great instructions I tried it and saved some cash. Thank big time. Your my hero.

[@jonathanbrayton8040]

Just FYI you are able to use a push/pull backwash valve. Plumbing from pump goes to port B and return to pool goes to Port E, waste is port A. Backwash needs to be in the up position when pool is circulating and down when backwashing. Great videos.

[@jwhome9319]

Great Teaching video. All your videos are very clear compared to many other demonstrations and narrations. Good Job. Answered my questions about 1) elimination of backwash valve 2) reverse of the inlet and outlet connections! Thank you.

[@SPL]

Thanks for the positive feedback! 😃👍

[@kc6442]

That purple cotton ball, is the "Star" of the show. In a lot of ways, for me. Soothing🤣 Great video 👍

[@teacherlynn671]

Thank you David and this video really helped me installing the Quad BUT…. The Superior 37115 PVC Pipe Cutter did not do too well. I used this tool and it was great for about 5 cuts. Then it shattered every pipe. I expected this to happen on old pipe but not on new pipe. I am really disappointed. Too late to return. But David thank you for your time and your professionalism. I get your emails and they really help especially the last one where you said chlorine level is tied to the level of cyanuric acid. If you don’t get David’s emails I would suggest you start. God Bless you David.

[@SPL]

Too bad about the tool. That is a bit unusual. Thanks for the great feedback otherwise!

[@tangledline]

I just got a home with a pool and this is all new to me. My pool is a 17k gallon pool and welp...its empty with 3 foot of dirty water and someone stole the pump and the filter is a skinny looking oddball that really looks too small for the pool. I just bought a Pentair Quad DE filter and now...trying to figure what pump to get. Im on my own here...and with your help...I feel confident. I will look at your videos for more knowledge. Thank you for your contributions!

[@SPL]

Thank you for the great feedback. That is a pretty tough situation for sure. The Super Flo VS pump by Pentair would be a good choice for you. It is an affordable Variable speed Pump and will work fine on your size pool.

[@tangledline]

@@SPL Thanks for the response! So I was looking around town and found this pump brand new for $550...you think this will work? I forgot to add that I have a hot tub built in the corner of the pool. Thanks! Brand: Jacuzzi Model: J-VSP250 P600 HP: 2.5 Speed: Variable Speed RPM 600-3450 Good Filter size !! Sand: 36" 4Quad: 420sf Quad DE: 60-80sf DE: 60sf

[@SPL]

That one will work fine. You can even go with the J-VSP150 for your size pool.

[@kathyweigelhi-lophotovideo2984]

Thank you so much for these videos.

[@Poolsupply4less]

Very nice video.

[@rubenscott3972]

I love your videos

[@SPL]

👍

[@electricalsmokealarmsandmo1564]

That is basically a brand new set of equipment

[@SPL]

Yes. Fairly new at the time of filming.

[@johnruggiero5939]

Hi David, pool builder didn’t install a backwash valve - but did install a ball valve after the quad de filter outlet for direct waste to sewer catch. Can I open this ball valve when needing to waste some water? The pentair manual says only approved backwash filters can be used but what I have isn’t a backwash function- it’s just a typical ball valve that will allow water to leave the filter and go to the sewer. Pool builder said this is how city wanted it too. (And agrees like you, that backwash for quad de isn’t needed). Does this sound ok?

[@SPL]

That wil work fine. Some DE should come off as well.

[@thomasle7463]

Very informative!! What model of the Pentair Quad D.E. filter in the video (Quad 60, 80 or 100)? Thank you

[@SPL]

Quad 60 sq ft.

[@dennisskinner2339]

What kind of valve are you showing at the 45 second mark? Does it do more than backwash?

[@SPL]

That is the reccomended backwash valve for the Quad DE Filter. It only backwashes and doesn't do anything like Waste or Rinse mode

[@rays4067]

@@SPL wouldn’t you want to be able to waste or rinse as well (more options)? what halothane if a valve with those options is added?..

[@jacoe33333]

Hi. I have just come accross a strange setup. Is there a place I can send you a picture? It’s basically a pull and push valve connected to the quad DE. The line from the pump connecting to the bottom and the seperator line connected on the top of the valve assembly. Can you explain this or is it a mistake?

[@SPL]

You can email me at [e-mail]

[@apex36]

Hello, if I was installing a pentair cartridge filter, what valve would I use to vac to waste.? Thanks

[@SPL]

You can't technically vacuum to waste but you can install a 3-way valve before the filter to do that.

[@trishm2132]

My FNS filter is 15 yrs old. I live in Florida. We had the inside manifold taken out and cleaned and outside clamp replaced last year. yesterday I noticed the filter (shell) itself squirted water (crack) The whole thing needs replacement. I ordered the FNS Plus 48 filter... What would cause this seeing it's made out of fiberglass? How long should it take for experience pool supplier to install? Thank you for your videos. Very helpful

[@SPL]

The Fiberglass cracks from exposure to the Sun. I would say 15 years is a great lifespan for a filter. If you are replacing an FNS plus 48 with another FNs plus 48 it is only having to unscrew the unions and putting the new filter where the old one was. About 20 minutes.

[@trishm2132]

@@SPL Thank you

[@JNegus]

How do you back wash the DE out without a multivalve or push pull valve. Do you remove and clean the grids and drain the tank.

[@SPL]

You would have to take it apart and clean it. Truthfully these clean up in 5-10 minutes. Easy.

[@goblin103187]

Hi, I don't need a back wash valve on a clean and clear plus 320 do I? Its a quad filter but it doesn't say anything about DE ?

[@SPL]

Not needed.

[@goblin103187]

@@SPL Thank You! Your videos are very informative to us all.

[@derekisthematrix]

Did you install a valve to bypass the filter for the ability to vacuum to waste? If so, what kind/model valve would you recommend? Just had my old DE filter replaced with this exact same quad de filter but they didn't put any valve to bypass the filter and I'd like to add one. Thanks.

[@SPL]

If you want a Backwash valve with "Waste" mode for the Quad DE this is the only one that will work: 2" Threaded Multiport Valve for Sand and Quad D.E - 261055

[@jasonmfshow]

derekisthematrix if you just want to be able to vac to waste, a simple 3 way valve between the pump and filter with a backwash hose will do the trick. Compool makes a great 3 way valve that lasts.

[@shahphone]

@@SPL you show the fullfloxf in your video. Wouldn't that also do it? Why do so many people install the quad DE without backwash?

[@dennisskinner2339]

i have a Pentair CCP420. Can i replace it with either the CCP520 or the D.E. Quad 4 100 without having to replumb? Are they all direct replacements?

[@SPL]

Yes.

[@VS_937]

I had to replace my pool pump, redid the piping and now I have a leak from my pentair pool filter where the bulkhead union is. I checked everything, use thread tape (I don't see a spot for an o-ring gasket) but I can't figure out why. Any suggestion on troubleshooting?

[@SPL]

It might have a slight crack, Sometimes if you tighten them with Channel locks carefully you can stop it. Carefully as not to over tighten and crack them.

[@VS_937]

@@SPL Thank you so much for the suggestion!

[@inquietos01]

Can I install a d.e filter with out back wash valve ?

[@SPL]

yes, not needed

[@johncasor9698]

your fast on install... hey i want to install a new filter system on my 15 K gallon in ground pool . what size filter system do i need ??? 48'' 36'' 24'' / i have a 24'' pentair now. are Hayward and pentair the same thing basically ??? i use diatomaceous earth...

[@SPL]

48 to 60 sq ft would be my recommendation. Either brand is good.

[@johncasor9698]

@@SPL thank you so much...

[@dennisskinner2339]

Thank you, What would be the proper valve to have all functions including waste and rinse mode?

[@SPL]

With a Quad DE filter this is the only valve you can use. The regular Multi-Port Valve will damage the Cartridges. But you can call Pentair just to verify. That is what I was told by my local Pentair Rep.

[@dennisskinner2339]

This information is no longer correct. There are other multiport valves now listed for this application.@@SPL

[@krayzie5968]

does this filter require a backwash valve, I didnt see one in the final shot.

[@SPL]

No it doesn't. They do sell one. For me it is easier to just take the filter apart and hose it off. Takes less than 10 minutes to clean the entire filter. Backwashing these doesn't seem as effective.

[@krayzie5968]

@@SPL thank you for the reply. Do you think this filter would be sufficient for a 25,000 gallon pool withba penair superflo 1.5 hp variable speed pump. My pool filter now keeps dumping de in the poil everytime the pump powers on.

[@SPL]

@@krayzie5968 Yes. Maybe an 80 sq ft or 100 sq ft would be a bit better for that pool size.

[@rays4067]

@@SPL my quad de 100 has to be cleaned every 2-3: weeks.. it’s exhausting so am considering adding a backwash.. what do you suggest?.,

[@mprice7676]

How do I determine which size filter assembly to buy? Tank and all, like in this video. I currently have an FNS 72, but the pool used to run off a FNS 60... But the quads I'm seeing are 420's. I'm a bit confused. I have a 14,000 gallon inground 'play pool'... Shallow at each end, 5 foot in the middle... Kidney shaped.

[@SPL]

So the Quad DE comes in 3 sizes: 60 sq ft, 80 sq ft and 100 sq ft. You are probably looking at Cartridge Filters also without realizing it. They make 3 Cartridge filter sizes with the same tank that the Quad DE Filter uses. They are known as Clean & Clear Plus Filters. They come in these 3 sizes: 320 sq ft, a 420 sq ft and a 520 sq ft. - So if you are just looking to replace it with another DE filter I suggest a 60 sq ft Quad DE filter. If you just want to change it out for a completely different filter type then the 320 sq ft Cartridge filter will be fine. The DE and Cartridge Filter sizing is totally different so maybe that is why you are a bit confused. Bottom line: a 60 sq ft Quad DE Filter or a 320 sq ft Clean & Clear Plus Cartridge filter will work fine with your pool size.

[@mprice7676]

Swimming Pool Tips, Reviews & How To -MrDgvb1 You're exactly right! Which do you prefer, DE or Cartridge? So was this install DE or cartridge... With no backwash valve installed?

[@SPL]

I prefer Cartridge. Easier to clean overall and for your size pool very effective. Unless you live in an area with a lot of dirt/dust like the high desert. Then I would go with DE. But Cartridge is better.

[@mprice7676]

Swimming Pool Tips, Reviews & How To -MrDgvb1 I ordered the 320 system today. Thanks for your help!

[@storgerson1]

How do you secure the filter and pump system to the pad?

[@SPL]

No one does that anymore in CA. But you can secure the pump down if you like.

[@dennisskinner2339]

Can you show installing the 261050 Pentair valve to this pool filter.

[@SPL]

Eventually will get to it. Good idea.

[@ceciliashevlin1152]

Do you know If the de alternative is harmful to the environment like de is?

[@SPL]

Perlite is environmentally friendly

[@joeysbestfriend2614]

How much do you charge for these jobs? The installations

[@SPL]

$150-$200

[@whisps1]

Where do you purchase your pool heavy?

[@SPL]

SCP/Superior locations

[@whisps1]

@@SPL Thank you! I can’t seem to find it at any of my local pool supply near Long Beach Ca.

[@FlyLowJoe]

how hard is it to remove the dry fit pluming?

[@SPL]

Can be medium. Usually the fittings twists off fine but had to use a rubber mallet on occasion to knock an elbow off. With mallet fittings come right off. 😮

[@FlyLowJoe]

Swimming Pool Tips, Reviews & How To -MrDgvb1 lol thanks

[@andydakelbab]

how you install the backwash valve?

[@SPL]

I prefer not to because backwashing these will eventually damage the cartridges. They are so easy to clean that it is not needed.

[@johncasor9698]

@@SPL good advice...

[@rays4067]

@@SPL so did you i stall the fullfuxf on this video? My pool boy is about to install a backwash valve on quad de filter.. i got tired of having to clean cartridges every 2-3 weeks.

[@Maxis196]

I don't understand why you prefer to not install a backwash valve why not just get a cartridge filter.

[@SPL]

This is basically a cartridge filter in overall design. I find that backwashing these cartridges wears them out faster and replacing them is not inexpensive. Without backwashing I have some that are now over 5 years old and still in good shape.

[@classicmicrosystems]

because they don't filter as well

[@inaktiveshooter]

First off all, these filters are garbage.. Dont buy them unless you love cleaning or paying to have people clean then. Second, The standard backwash valve works just fine (as far as back washing actually helps on this filter), just has to be plumbed in different directions.

[@rays4067]

i’m tired of having to clean or send someone every 2-: weeks. why would they make it so inconvenient yet advertise them as the best thing around? i got duped

[@dennisskinner2339]

i have a Pentair CCP420. Can i replace it with either the CCP520 or the D.E. Quad 4 100 without having to replumb? Are they all direct replacements?

[@SPL]

Yes, should be a directl plumb as both tanks are the same.