How to replace a Polaris Pool Cleaner Back Up Valve


  3.78 out of 5 stars on 20 ratings
(Click on a star to add your rating)

The Polaris Back Up Valve is a mechanism attached to the cleaner's feeder hose, which helps the Polaris cleaner maneuver the floor of your pool. If this item is malfunctioning then your cleaner may not be able to clean effectively.

Click Here to Find Your Polaris Pool Cleaner Parts 

Step by Step


Step 1

First turn off your booster pump and disconnect from the dedicated pressure cleaner line from pool port, then remove your cleaner from the pool.

Click Here to Find Your Polaris Pool Cleaner Parts 

Step 2

Now to locate the Polaris Back Up Valve on the feeder hose, it should be within one hose length of the cleaner itself. Replacement Polaris 280 Pool Cleaner Back Up Valve part #: 3260-G054, Hose Feed Complete part #: 3262-0

Step 3

To remove the Polaris Back up Valve from the feeder hose and hose assembly, unscrew the plastic nuts on each side of the valve and slide the hose off the valve nozzle. Replacement Polaris 280 Pool Cleaner part #: 3260-D015

Step 4

If you are simply replacing this part, at this point you would install the new valve by reattaching the nuts and hose to the valve nozzles. If you are replacing the Polaris Valve Mechanism, please read on. Replacement 280 Polaris Pool Cleaner Back Up Valve Mechanism part #: 3260-G053

Step 5

Disconnect the back up valve locking nut and separate the 2 pieces of the valve. Replacement Polaris 280 Pool Cleaner Back Up Valve Mechanism part #: 3260-G053

Step 6

Inside you should see this piece called the Polaris back Up Valve Mechanism.

Click Here to Find Your Polaris Pool Cleaner Parts 

Step 7

To extract the Polaris Valve Mechanism, simply grip and pull up.

Step 8

Replacing the valve is just as simple, align the valve mechanism's water port with the valve port opening and slide the mechanism down into position.

Step 9

Now place the other end of the valve cover, being sure to line up the notch on the cover with the notch on the other end of the cover then slide down into position. Before doing this step take time to inspect the valve top cover O-ring, to ensure that it is not warped or worn. Replacement Polaris 280 Pool Cleaner Back Up Valve O-Ring Kit part #: 3260-G058

Step 10

Finally tighten valve nut. Replacement Polaris 280 Pool Cleaner Back Up Valve Collar part #: 3260-G057

Step 11

Reinstall valve back in line with the feed hose, by moisten the end of the hose with a solution of water and dish detergent and sliding it onto the Polaris Back Up valve's nozzle then tighten with valve nut.

Click Here to Find Your Polaris Pool Cleaner Parts 


(1 to 25 of 25)

 Posted: 11/5/2021 

1) What is correct length of hose from from the connection to Polaris 3900 to front connector of backup valve? 2) should the water jet on the valve be on the top (up)or bottom (down)? Thanks.

InyoPools Product Specialist  Posted: 11/10/2021 

According to diagrams for the Polaris 3900, there is one length of hose (lead hose) between the cleaner and the backup valve. The spout that shoots out the water jet should be facing the side of the cleaner so that it would propel the cleaner backward.

 Posted: 8/26/2021 

I was having my Polaris pool cleaner getting tangled up in its hose for a couple of years. It happened a lot, at least once or twice a day, getting tangled when the back-up valve was backing up. I changed the backup configuration to the one shown in this diagram ( ) and the difference is incredible. It has not tangled itself even once in the last two weeks. Highly recommended you change to this configuration if you are having a tangling problem. I didn't have to buy any new parts, just used the ones I had.

InyoPools Product Specialist  Posted: 8/27/2021 

Thanks for the tip!

 Posted: 4/13/2021 

how many feet from the cleaner itself, the instruction was not clear

InyoPools Product Specialist  Posted: 4/16/2021 

The back-up valve should be on the first hose joint before the leader hose. You can see a diagram of the hose assembly here: Polaris 280 - Hose Assy

 Posted: 5/23/2018 

Your instructions always help me. Regarding this topic, it would be nice to add more tips in Step #3 and #10. I have Polaris 360. I spent more than 10 minutes to unscrew the plastic nuts from the backup value. Then I spent more than 20 minutes to screw back with a groove plier, but I still couldn't put it back completely. Putting a hose back was okay, but tightening with the plastic nuts with a bare hand and with the plier didn't work well. My hand almost got a blister by forcing to tight the nuts.

 Posted: 10/16/2017 

Anonymous (hose tearing) - I have no data on this issue. Please give Pentair a call at 800-831-7133 to see if they have something to correct this problem.

Anonymous  Posted: 10/16/2017 

Hose between Valve and cleaner keeps tearing.

InyoPools Product Specialist  Posted: 8/7/2017 

Anonymous (Back up valve) - The length of the hose connecting the back up valve to the cleaner should be 4' by design. But if the connecting ring is wearing out by dragging on the pool floor, I would shorten the connecting hose.

Anonymous  Posted: 8/3/2017 

My back up valve is dragging on the pool floor and the connector ring keeps wearing out. Should I shorten the length of the hose connecting it to the cleaner (3900)?

InyoPools Product Specialist  Posted: 10/28/2016 

ATX16 - The distance between the cleaner and the backup valve should be one hose length - 4 ft. Check to make sure the valve is not clogged with debris.

 Posted: 10/27/2016 

how long should the hose be between the cleaner (in my case a Polaris 360) and the backup valve? I often find my cleaner stuck in the same place, and am wondering if there may be too
much hose length. I'd guess it is 6'. I do see the backup valve working some times, but it's pretty gentle.


InyoPools Product Specialist  Posted: 10/3/2016 

sydbarrett - It sounds like the mechanism inside the Back UP Valve may be jammed. The water from the Back UP Valve should only pulse intermittently. Take the valve apart and clean out any debris in the gears. Check for cracks in the shell of the valve. Check that the gears move easily.

 Posted: 10/1/2016 

I just bought a back up valve for my polaris 360....the water is a continuous hard flow from the backup valve. I checked the line AFTER the valve to see how much water was getting to my cleaner.....very very little. There is no pressure getting to my cleaner now. Help

InyoPools Product Specialist  Posted: 9/27/2016 

Kevin - As long as your cleaner is not getting stuck in the corners and appears to be cleaning the entire floor, I would tend to agree with you.

 Posted: 9/26/2016 

My backup valve has over time increased it's amount of time on to the point that today it is stuck on. My pool is kidney shaped and the cleaner never gets hung up on anything. I'm wondering if, in my case, I even need it?

InyoPools Product Specialist  Posted: 4/26/2016 

schumap1 - I would recheck the steps in the guide again. Make sure the mechanism's water port is aligned with the valve port. Inspect the valve top cover O-ring. If these are good, you may have to replace the mechanism.

 Posted: 4/25/2016 

thanks for instructions, the outer casing cracked and had to be replaced. Now i cannot reuse the mechanism as it now does not hold pressure and simply shoots water releasing all pressure needed for cleaner. The simple instructions imply the mechanism is either broken, failing or not reusable.. Any help is appreciated,

InyoPools Product Specialist  Posted: 5/18/2015 

Ray - Evidently this is a shared problem. See the previous comment under "User: Tate" for a possible solution.

 Posted: 5/17/2015 

I hate the backup valve. No matter what I try, it whips the cleaner violently around in circles, often entangling the hose and filter bag in the process. All it needs is a gentle tug backwards, not an angry sea serpent attack. Who are the engineers responsible for this?

 Posted: 5/17/2015 

What I have done to reduce the tangles created by the backup valve being too powerful/running too long is glue a small length of tube inside the water jet. The restricted flow makes the reversing action less violent and solved my problem.

InyoPools Product Specialist  Posted: 6/30/2014 

Keith - Unfortunately the timing of the backup is not adjustable. The cleaner has a set pattern to maximize the area it cleans.

 Posted: 6/29/2014 

I agree. All the time the Polaris is in reverse, it is not cleaning. Backup every half hour would be fine.

 Posted: 11/19/2013 

Is it possible to reduce the amount of time the back-up valve reverses the polaris. It seems that the unit ties itself & the hose into knots as the back-up valve reverses for too long. You then need to untangle them. This happens fairly often. It seems like the reversing time needs to be halved.