Filter Backwash Valve Leaking or Stiff -Replacing the Stem O-rings

Swimming Pool Tips, Reviews & How To - SPL

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In this video I show you how to fix a leaking or stiff push/pull backwash valve commonly found on most D.E. and some Sand filters. The hardest part is removing the piston as the o-rings tend to expand with age and lock the piston in the valve - making it difficult to pull it out on occasion.
I usually will order the complete backwash kit in case I need the other o-rings for the handle part. Plus it is sometimes cheaper just to buy the complete kit:
Hayward Kit
Hayward Filter Slide Valve 2" SP410X Rebuild Kit
Pentair Kit:
Pentair PacFab 2" PVC Slide Valve O-ring Kit
Jandy Kit:
Zodiac R0442100 Rebuild Kit Replacement for Zodiac JandyBackwash Valve
For more videos on backwash valves see this playlist on my Channel-
D.E. Filter cleaning, Backwashing & Tips:
• D.E. Filter cleaning, ...
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15 сен 2024

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Комментарии : 131

@DoggieA 7 месяцев назад

I watched this video, bought parts from Amazon and saved at least $1000 comparing to hiring a pool specialist. Thank you!

@jamesmmessina6986 8 лет назад

Thank you for making these videos. You have helped to make me more confident at maintaining my own pool. With your help my pool is actually cleaner than it was with the "quote-unquote" professional who showed up when it was convenient for him to do so.

@tysonc78 3 года назад

I use a citrus based biodegradable solvent to loosen up the valves. It rinses away clean once the valve is removed and makes the removal process a breeze. Just a couple sprays into the valve after getting the cap loose and the twist and a little working it pulls right out, skipping the hernia. I would have thought you would use something. Thanks for the great videos.

@SPL 3 года назад

Will have to try that next time. 👍

@tysonc78 3 года назад

@@SPL Definitely, haven't broken a handle or piston since I started using it. It breaks down the old grease and lubes everything up really nice. Then I just flush it with a hose before replacing and lubing new o-rings. Easy peasy. Been watching your vids for years. Also I made a "hole in one basket" on my bench a couple years back then found yours when I Googled it. I've bought and installed a dozen or so already. Respect.

@tysonc78 3 года назад

www.acehardware.com/departments/home-and-decor/cleaning-and-disinfectants/degreasers/1182237

@ryanmarci7043 4 года назад

I was getting sand blowing back into the pool every time after I backwashed. Not a lot, but a good 3-5 secs on sand right after startup - but only after I backwashed. Cleaning up and re-lubing the O rings solved this problem for me.

@SK-or9bo 4 года назад

For anyone that needs to change the small oring on the shaft, find a tiny drill bit that fits inside the roll pin at the top of the handle. Fits tight. Insert the shank of the drill bit, not the cutting side. Once it is as far as you can insert it, get a pair of vise grips and clamp down hard on the pin with the drill bit shank inside. You will need to gently pry on the vise grip jaws so that they start to pull the roll pin out. You may want to try and rotate the pin a little bit before you start. The pin is over an inch long so you may need to get another closer bite with the vise grips as it comes out some. Pry evenly and gently so you don't break anything. Take your time. It will be tight. It's going to take some effort to pull it out. Go slow and don't let it bend over. Keep it straight while it comes out. I used a strong bodyclip remover to pry on the vise grips.

@hikariscissors 3 года назад

Thank you!! Most videos ignore that because its so difficult to take out. Thank you for taking the time to post that!!

@homehunter1854 3 года назад

Would anyone be able share under what circumstances that we need to do this hard part?

@hikariscissors 3 года назад

@@homehunter1854 If there is a leak at the handle area then you need to change the small O ring. If not leaking, no need to change it.

@richardstell8099 2 года назад

Thank you sir

@wozgaming2837 Год назад

Excellent call on the drill bit and vice grips. mine was still a total pain in the a! finally shot some wd40 in it to even get it budging, got it done after a good hour of tugging and trying not to bend .what terrible design!

@Nitronerd 3 года назад

Really appreciate you producing these videos.

@Amatasjr1 Год назад

To remove the small Oring I used vise grips gently on the tip of the roll pin and started to turn counter clockwise while pulling out. Came right out with minimal damage to the roll pin. Great forearm workout as well. Lol. Hope this helps

@destinyreturns4885 4 года назад

Thanks so much for your video and explanation, as I just encountered this today with my pool and thought I'd take a shot at fixing it before calling the pool guy. Doesn't look beyond the realm of my ability; Thankfully.

@SPL 4 года назад

Pretty easy. 👍

@destinyreturns4885 4 года назад

@@SPL I did have a real problem attempting to replace the smallest gasket, as it's pretty obvious that this assembly is really not made to be taken apart, but rather replaced, otherwise, they would have used something like an allen screws instead of solid pins. Anyway, as my leak was steaming from the handle gasket I finally decided to apply some silicone caulk to that area, and to my delight there was no further leak. I know the replacement is just about $51, but if I can hold it off a bit longer I certainly will. Peace....

@bonnielspivey3807 7 лет назад

Thanks a ton. Easy Peeeeeezy Except that Leslies Pools sold me 4 rings for other filter brands. Sucks. Would buy orings on line for your correct product and you will get the correct rings. Pentier orings ... Leslies sold me hayward and another . I didnt notice but trusted what they told me i needed. Usually when I get a leak i cant wait for on line because of water loss. Do it yourself everyone. 58 yr old woman did it in 15 min. THanks for the video

@AereForst 5 месяцев назад

There’s a video on RU-vid by Steve the Pool Guy showing how to remove the O-ring by uncoupling the assembly from the filter, snipping the O-ring through the side port, while grabbing it with a needle nose pliers, twisting the piston shaft assembly slowly, which feeds out the O-ring through the side port that attaches to the filter. Seems like a much easier solution.

@SPL 5 месяцев назад

You can usually muscle it off. Some of the older filters when you go to turn the plastic nuts - can crack. As a rule they are more or less a permenant fixture on the equipment. But Mikey's Quick Couplers can save the day in that case. I've seen that technique used in extreme cases. Good tip!

@StokeyBob7 9 лет назад

Thanks for your video. It gave me a couple of dry runs through. When I saw your hernia maker I thought dish soap. Sure enough mine was tight. I got it open enough to squirt in some soap. I wiggled it around a little, then it pulled out like lifting an empty milk carton in the refrigerator. Also I'm glad I saw your lube for putting it back together. I tried my dry and ended up making a trip for the lube. It works slick for the moment.

@SPL 9 лет назад

+StokeyBob7 Glad it went well and you didn't injure yourself ;).

@randyrice404 9 лет назад

Thanks for reply. I got it. I bent a nail. Lowered it in hole with needle-nose pliers. Took giant slot wrench I have (same pair you have I saw on a video), put it perpendictor under valve handle. Bent arms 90 degrees and pulled up with arms/shoulders instead of relying on strength of my hands. Came up first try. Using galvanized nail as cotter pin til I can get stainless steel one. Pulled 3-4 inch nail thru then bent it around shaft.

@SPL 9 лет назад

Randy Rice Very nice MacGyver ;).

@daven5307 8 лет назад

YEAH! Thanks about to cut PVC tube but I saw your hernia comment and troubles, will go back out tomorrow after the special undies arrive from amazon. Thanks! diagram simple is not what real world vids are. thx

@Ruso_Moose 6 месяцев назад

Do you have to depressurize the filter unit before removing the stem O-rings? Or can you just remove the valve as you showed in the video? Sorry... I'm a new pool owner. Great video by the way! I have the 2nd valve stem shown on this vid 👍

@SPL 5 месяцев назад

No need, just turn the pool off first. Thanks for the great feedback!

@billkex 4 года назад

Thank you for this video. I'm glad it was a fight & how you dealt with it. Mine was a fight too. Normally, I would've feared I'd cause more damage, given up & called a repairman, but seeing what you went thru, I expected it. I did spray WD-40 in there to lube it up enough to get it out. (it was really snug in there) I cleaned it all up really good, lubed up the o-rings, etc. and put it all back together. Works nice. I think you saved me a couple hundred dollars. (repairman wanted $85 just to come out and give me a quote, + big $$ on parts and labor) Thanks!!!!

@SPL 4 года назад

Keeping it real. 👍 Glad you saved some money too. 👍👍

@Joe-zz3vx Год назад

If it’s seized and hard to pull out use blaster silicone spray. Shoot it down into the tube

@ivyhernandez2526 5 лет назад

I replaced the O rings but the next time I had to backwash it was stiff again. Not happy to have to get my hubby to do this all the time..pentair valve...hate it with a passion!

@anthonyromero5993 6 месяцев назад

Do u have to back wash before you disemble it ?

@stephenkirby1514 2 года назад

Thanks for that lesson. Well done! However, I have to change out the LITTLE "O-ring" on the stem. How do I get that roll-pin removed safely please?

@SPL 2 года назад

It's a little hard to pull out - try tapping it with a sharp screwdriver and then use a pair of plyers to pull it out.

@PNFLnetwork 8 лет назад

Thank you for replying to my question about this exact issue......I will give it a try tomorrow :)

@entmd1978 7 лет назад

Easy workaround for hernia-causing stuck valve pistons: remove the filter by unscrewing the inlet and outlet unions, and then you can grab the stretched out O-rings from your view into those pipes. Grab them with a needle nose pliers or hemostat and cut them and you can pull out the O-rings easily. You can then lift out the piston with your pinkie! No broken backs or hernias! You were going to put new O-rings anyway, so why struggle with what you are throwing away?

@guszanfardino5188 26 дней назад

Replaced all the orings but water still dripping primarily from the two screws that keep the valve in place Might have to replace the whole valve that screws into the the filter.

@SPL 25 дней назад

I would replace the entire backwash piston at this point.

@guszanfardino5188 24 дня назад

@@SPL Thanks, getting a whole new valve for $79 from Amazon today and replacing it.

@juansaintesteben8527 8 лет назад

saw the bus thanks just replaced the prongs on mine same set up, I have a sand filter but mine backwashes when the plunger is pushed down and I run the filter with it in the up position, pool place says that when it is sand that is how it is set up is this correct..

@dasboot360 5 лет назад

Any tips on removing the black screw nut on a Hayward. It’s super tight and don’t know what I can use to loose the nut that secures the piston. Thanks

@georgelucas8586 3 года назад

Do you ever clean the inside of the PVC that the valve slides into, if so what do you use.

@xKmotx 10 лет назад

Just a thought.... Could you use pump pressure to blow out the valve instead of straining to pull it out?

@SPL 10 лет назад

xKmotx Some have tried that already. Not enough pressure builds up. I just pull and twist and eventually it comes out. Someone tried some liquid lube with little success as it needs to get in the o-ring area - which is expanded from wearing out.

@peteflynn3923 4 года назад

So mine is leaking on that little shaft oring, and to replace that one, you need to remove the handle and that split pin won’t compress. I’ve used the largest pliers, lots of force, and can’t get it out. I was really hoping you’d do the whole job. It’s blocked on the back side by that shroud, so you can’t tap it out with a drift.

@SPL 4 года назад

When they start leaking from there I just install a new piston. Chances are it is pretty old and when you go to pull it up it will snap off. A new piston is around $50.00

@imgio1313 7 лет назад

Mr Swimming Pool, on this video at 3:01, you show a graph with part numbers. What is the name of part number 7 & where do you recommend buying it from? Thank you, George.

@danseman1 8 лет назад

When I want to get my filter canister opened, I just turn on the switch for a few seconds and the pressure builds up and pops it open. Do you think that might work when trying to get the backwash piston out? If you pressurize the system, do you think it would help to pop a stuck piston upwards?

@Bwills777 Месяц назад

The part to unscrew is completely stuck for me, the last person tightened it with a wrench or something. How would i get it off?

@SPL Месяц назад

Try a large pair of Channel Locks

@MyDeezy1 9 лет назад

One last question befor I get into this that is that's if it's broken half way down the piston inside the houseing

@youvidium9728 4 года назад

Mine was in there so tight I had to get some scrap pieces of wood and set it up to use leverage in a slow controlled manner to remove it.

@SPL 4 года назад

Good thinking.

@jonathangoin 5 лет назад

Make sure you don't break the shaft. Mine was broke and I had to buy a new one to the tune of $80+!!!

@HAULUUZ 2 месяца назад

Can this be the cause of DE in my pool? I’ve check the filters 3 times! This is getting old.

@SPL 2 месяца назад

Usually not this type of backwash valve. Check the stem oring as that might be the source

@SethPruitt 7 лет назад

Thank you for the videos! I have a "hernia" backwash valve. It wouldn't go back to the lock position when I backwashed today (I pushed and twisted as much as I thought was reasonable). Is that typically an o-ring replacement? Or does that usually mean a valve replacement?

@SPL 7 лет назад

I would unscrew the top and pull it out.It could just be bad o-rings - one maybe split causing it to seize up,. Once out see if the piston looks okay to reuse. If it feels wobbly or unstable replace the entire piston.

@AndyWin9 4 года назад

Thank you for making this video. Do I need to release pressure from the filter and remove the drain plug to take out all water out before taking off the piston assembly?

@SPL 4 года назад

Your welcome. No, once you pull it out any air will come out safely.

@AndyWin9 4 года назад

Swimming Pool Tips, Reviews & How To - SPL Thank you. It works. No more leaks after o-rings replacement.

@sidelineinteractivescorers3373 9 лет назад

what model is the push pull valve at the 1:09 in the video? I have the same valve but all the marking handle is broken and don't know the model/make. I need to replace the stem. Thanks for the info.

@SPL 9 лет назад

Dung Chau www.amazon.com/Pentair-273241-Assembly-Replacement-Multiport/dp/B002NJIE4U/ref=pd_sim_86_2?ie=UTF8&refRID=1927Q69TZDK4HW8672FK

@sidelineinteractivescorers3373 9 лет назад

Swimming Pool Tips, Reviews & How To -MrDgvb1 Thank you for your very informative videos and advice.

@InstantLockerInvite 2 года назад

The pin is stuck in my pentair 2” and i cant twist it counter clockwise to unlock it. Any tips?

@SPL 2 года назад

If it is a DE filter you can take the grid assembly out and then from inside the tank break the o-ring with a pair of needle nose plyers. The expanded oring is probably the issue. Or untwist the nt on top and try to wiggle the piston free.

@Finga_Trappa 2 года назад

Love you brother

@zmatthew7000 2 года назад

Damaged o- rings can make the pressure of the filter go higher than normal?

@SPL 2 года назад

Not to my understanding.

@11DICK4189 Год назад

Where did you buy the new replacement O-RINGs??

@SPL Год назад

Any local pool supplier will carry them.

@pastordave777 4 года назад

I have this problem now, I have broke the handle while trying to twist and pull, and now I have taken everything off. I am not able to remove the rest of the piston. Please, any ideal to remove the piston would be awesome. We bought the house going on two years ago. I have had to replace the piston valve three times in the two years. Each time I try and flush the system, it is always sticking and hard to turn and pull up. Each time I have replace the piston, I get a whole new unit, which is costly, but I put a very liberal amount lube on all the O rings. I do not understand why this continues to happen. Any ideal?

@SPL 4 года назад

If it is DE filter you can access the remaining piston part from inside the filter. If you take the grids out you will see the backwash valve from the inside. At this point you should be able to push it up.

@jeffrey9102 5 лет назад

Another Great video bro, thank you

@todosobrepiscinas6809 4 года назад

So i had a customer tell me about his leaking valve I tried my hardest to put it out but no luck. That thing is there like if it was supper glued? Any tips? I just saw a comment saying about some soap might give that a try!

@SPL 4 года назад

Worse case you can unscrew the unions from the filter and reach in with some needle nose plyers and clip off the spring. Then the piston should pull right out.

@MyDeezy1 9 лет назад

Ok thanks I'll let you kno how it goes ..you wouldn't happen to work in the Phx metro area would you

@SPL 9 лет назад

amanda magana Also if you have a website and want to be listed on my website I can do this for you at no charge.

@MyDeezy1 9 лет назад

Ok so I work at a complex in wickenburg A.Z. so I service everything my self we have the pentair back wash set up that has the 2 screws an after watching ur video I went to do the o-rings so I open it up an I started to come out with ease well come to find out the piston is broke off half way down how do I get it out plz help

@SPL 9 лет назад

amanda magana This is what one guy did to get it out: "I got it. I bent a nail. Lowered it in hole with needle-nose pliers. Took giant slot wrench I have (same pair you have I saw on a video), put it perpendictor under valve handle. Bent arms 90 degrees and pulled up with arms/shoulders instead of relying on strength of my hands. Came up first try. Using galvanized nail as cotter pin til I can get stainless steel one. Pulled 3-4 inch nail thru then bent it around shaft.

@babsnikon 5 лет назад

I wish someone can tell us what we are doing wrong!! Every time we backwash the pool and have to lift that handle, my husband ends up breaking the handle and has a hell of a time getting the pieces out. We have gone through 3 handles, this is getting expensive!

@MiguelLopez-sh5so 7 лет назад

What is the model number on the valve that comes out at 2:37 in the video with the hernia? Mine is leaking from the top even after replacing the small o-ring. I'm thinking maybe some of the material is worn from the non-threaded portion of the top?

@SPL 7 лет назад

Pentair 51013811 Complete Valve Stem with Handle Replacement Push Pull Pool and Spa Valve

@medina239ify 10 лет назад

That one looked like a pain in the neck. David, what would you charge a customer to change those orings?

@SPL 10 лет назад

medina239ify JUst the regular service charge of $45.00 - usually it is easy. Sometimes not ;). I carry extra kits for both Pentair and Hayward in my truck.

@MyDeezy1 9 лет назад

Thanks but I don't do just pools I do apartment turns so cracked her open an the bottom piston is gone so now what's that mean lol I kno there's a spot that reduces down to about an inch and a half so I'm thinking it's stuck sideways

@SPL 9 лет назад

amanda magana Worst case you will have to cut out the backwash and re- plumb in a new one. A bit of a pain.

@fonzymtv9317 5 лет назад

What can I doo if the cap you remove at 1:02 is stuck, it’s completely stuck. Igot blister on my palms and even tried with gloves as well . I’m super desperate

@SPL 5 лет назад

Try a large pair of Channel Locks

@danielmunding6700 8 лет назад

in fact this nightmare video gives me a heads up to lube rings 3 times a year or more

@602State 6 лет назад

How much did You charge for this project if you don’t mind me asking you ? I’ve had a leak and been trying to fix it . Took my Sunday and finally gave up for today . I might just have some one fix

@SPL 6 лет назад

If it just needs new o-rings it should just be a service call plus a minimal parts fee. $70-$85

@602State 6 лет назад

Swimming Pool Tips, Reviews & How To -MrDgvb1 ok thank you

@mlschwar 9 лет назад

So you have any videos on doing something similar for a pentair 4000?

@SPL 9 лет назад

Michael Schwartzwald That is a lot more difficult. You will need to cut the filter out and remove all of the grids and bottom manifold. Then unbolt the rotor valve and install a new one. If it is just dripping from the backwash pipe itself I suggest just installing a ball valve at the end and closing it off and just opening it when you need to backwash. The replacement will cost around $400 of you hire someone. The part is a couple hundred dollars.

@silvioparada8931 3 месяца назад

Will O rings fit any valve? My filter is first choice?

@SPL 3 месяца назад

Not really. Maybe try a few different brands

@silvioparada8931 3 месяца назад

@@SPL thanks

@williamflores9779 8 лет назад

is there is easy way to find out how many gallons of water are in a pool?

@frankwiddifield7520 6 лет назад

Math... avg width × avg length × avg depth × 7.5

@serdgeedgerunner 7 лет назад

In my case piston was staying inside, I got only metal rod out. How to fix it? I believe I have Hayward valve..

@SPL 7 лет назад

Would need to see a photo of it.

@Will-ik3sz Год назад

Anyone have an answer for why my new piston, with new O-rings, and well lubed with Magic Lube, is so hard to rotate to move into backwash mode, or back to filter mode, is so friggin hard to turn. Once turned (rotated) is moves pretty easily into the either up, or down position. But the rotation is so hard. Replaced the piston assembly because it broke trying to rotate to do a backwash. So I'm confused why it is so hard. It is also a fairly new (2 years) Valve itself. I removed and replaced the entire thing 2 years ago, and has always been difficult to rotate. Anyone else run into this problem? Id so, what was the fix? Thank you.

@SPL Год назад

I wonder if the actually housing might be defective.

@ma1icha 2 года назад

How can it be taken out of handle broke

@SPL 2 года назад

Not easy. Sometimes you can grab the top with Channel Locks. You may need a pool pro to come out.

@JjEffrey616 7 лет назад

How do I replace the small o ring?

@SPL 7 лет назад

There is a tiny pin in the handle. You will need to remove the pin to get to the small o-ring.

@u2ber1001 7 лет назад

How do you remove the pin in the handle? I don't want to break it. Thanks!

@daveperthuis571 6 лет назад

What is the purpose of having to twist the handle ?

@tysonc78 3 года назад

It unlocks the valve.

@amypham3372 7 лет назад

Can these bad O rings cause D.E. to leak out into the pool? I just changed Pentair filters ( whole unit), but the water is cloudy from D.E.

@SPL 7 лет назад

It could be just some DE leaked back in when you were servicing the filter. Vacuum it up when it settles and see if that was the case 1st.

@amypham3372 7 лет назад

Thank for response. I have tried to drain the spa water several times and refilled it thru the Pentair filter tank. It still cloudy and see D.E. residue on the bottom. I also have been running the filter since last Sunday with robotics cleaner ( Dolphin). I might have to take it apart again, re-inspect the tank and every component of the filter. So you don't think it is the O rings of the filter pistons?

@SPL 7 лет назад

Sounds like something is put together wrong inside the filter. Check the Stem O-ring also.

@amypham3372 7 лет назад

The filter unit came as installed and ready to " plug and Play" . I think the you are right..... Stem O-ring has never been replaced. Where would they have it at Lowe's or Leslie's pool and what size?

@SPL 7 лет назад

what type of filter do you have? Brand?

@danielmunding6700 8 лет назад

Omg yes I've run into this from taking over someone else's lack of maintenance

@brandonroberts8996 4 года назад

You having your leg on the filter gave me anxiety because of the fiberglass

@SPL 4 года назад

Oh, oops! I should be more careful. 😜👍

@Gesha_7 3 года назад

You didn’t replace the small o-ring and this is a hardest part

@SPL 3 года назад

Right. I just put a new piston on when that goes bad. figure gotta be pretty worn out. $60.00 and you get 10 years out of it.

@meanswing 4 года назад

I have a Waterway 505-1011 that needs new O-rings. Here is the slide valve itself sunplay.com/products/waterway-slide-valve-600-1500. Do you know which O-rings I need?

@SPL 4 года назад

Suggest contacting Waterway tech support. They are very responsive.

@randyrice404 9 лет назад

My cotter pin is missing. The bottom half of the valve is stuck in the bottom with expanded o-ring. I have tried a clothes hanger to attach handle to bottom, but the bottom is too stuck. Any ideas?

@randyrice404 9 лет назад

Randy Rice I have tried a nail to attach handle to bottom, but there is only that inch or so space to reach down with needle nose pliers to get nail in place.

@SPL 9 лет назад

Randy Rice That is a tough one. Some have tried soap and transmission fluid to make it slippery but if it is really jammed in there no fluid will get past that o-ring.