How To Replace a Pool Multiport Valve Spring

WRITTEN BY:  Inyo Pools

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Occasionally after years of use, the valve spring may break or become weak. When this happens the spider gasket will not seal properly and your valve may start leaking into the wrong ports. This guide shows you how to replace the spring in your pool multiport valve. This guide is written showing a Hayward Multiport Valve; however, the content is applicable to most other valves.

Step by Step

Top

Step 1

Before starting, make sure you TURN OFF THE POOL PUMP. For maximum safety turn off the power at the circuit breaker to the pump.

Step 2

Next release the pressure in the filter tank by turning the drain cap at the bottom of the tank a half a turn counter-clockwise. After you hear the air release, close the drain cap clockwise. Hand tighten.

Step 3

Take the top of the multiport valve off, by unscrewing the six screws around the outside edge of the valve. You do not have to remove the whole filter valve to replace the valve spring, only the top handle assembly.

Step 4

This is a picture of the top handle assembly of the multiport valve once removed. The assembly is upside down and the valve spring is in the center.

Step 5

Place the top handle assembly face up on a carpet piece or towel to protect the spider gasket on the bottom side of the top valve assembly. Make note of the position of the handle relative to the opening at the bottom of the valve. The handle must be installed in this same position. It is possible to install the handle 180 degrees out of position and completely mess up your valve operation.

Step 6

While sitting in a chair, place your feet on either side of the handle and lean forward on the valve to compress the valve spring. With the spring compressed, tap out the steel pin that holds the handle to the valve stem. A small nail punch works well here. If the pin doesn't punch out easily, you haven't compress the spring far enough. Lean a little further but use caution. Don't put your full weight on the valve or you may break it.

Step 7

Lift the handle off the valve stem and check the white plastic bearing washer underneath the handle to make sure it is intact. This washer sometimes cracks and interferes with the rotation of the handle.

Step 8

Lift the valve cover off of the valve stem.

Step 9

Slide the valve spring and two washers off the valve stem.

Step 10

This is a picture of the Top Valve Subassembly completely dismantled

Step 11

Slide the new spring and washers onto the valve stem. If the washers are bent or scored, you should replace them also.

Step 12

Place the valve cover back onto the valve stem.

Step 13

Place the new handle on the valve stem and reinsert the pin using the same method described above. The pin may be fluted on one end to make a tighter fit. Insert the smooth end of the pin first as shown. Again, if it takes more than a couple of taps to insert the pin, you have to compress the spring a little more.

Step 14

If you have aligned the handle correctly, it should look like the positioning shown in Step #5. If the valve looks like the picture at the left, it is attached wrong and will have to be remounted. If the valve is operated with the handle mounted 180 degrees off, you will Backwashing when you think you are Filtering and Recirculating when you want to dump water to Waste.

Step 15

Replace the Top Valve Assembly on top of the Valve Body and secure it with the 6 screws. The Top Valve Assembly can only be mounted one way with the notches lining up.

Step 16

Turn the power to the pump back on.

Comments

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(1 to 30 of 30)

Inyopools  Posted: 06/17/2017 13:08 PM  Inyo Product Specialist

Melissa - Try replacing the spring the next time you replace the key assembly. Also, when you change the mode on your MPV, do you turn off the pump first? And many dealers say to only rotate the handle in one direction, like clockwise, every time you change mode.


Melissa  Posted: 06/16/2017 9:49 AM 

For 3 years, I have had leaking out the backwash port when trying to filter every spring. Every spring, I replace the key assembly and each time it works for just that year. It seems like something else is going on here? Any suggestions on what else could be the problem?
Thanks!


Inyopools  Posted: 06/06/2017 15:51 PM  Inyo Product Specialist

drew5200 - Not sure what you are doing. When you vacuum are you using a suction cleaner and are you in "Filter" mode? And in this mode, some water is leaking into the waste line and the water that is supposed to be filtered is going out the returns dirty? Check that your new spider gasket is still good. You might have to glue it in. Inside the tank check the standpipe, the laterals and the lateral hub for cracks.


drew5200  Posted: 06/05/2017 20:03 PM 

I replaced spider casket part sp0714cMy backwash line still leaks When I vacuum it blows back into pool yuck.It never has dirty water when I back wash. Pool water stays blue but cloudy


Inyopools  Posted: 05/18/2017 10:51 AM  Inyo Product Specialist

Christi - Most people are gluing in the gaskets to keep them from rolling out. Try just putting a dab of glue at the major intersections of the grooves. Also when you move the handle to change mode, be consistent in moving it in the same direction, clockwise or counter-clockwise.


Christi  Posted: 05/17/2017 14:50 PM 

We just replaced all of this without problem and it worked fine for about a day. It has once again started letting water out of the backwash line. Went back to the pool place and was told it should've been super glued in. Any suggestions other than glue? Please help!


Inyopools  Posted: 05/15/2017 0:34 AM  Inyo Product Specialist

mike - There are one or two o-rings that fit in the groove(s) on the shaft of the key assembly. It sounds like these may be damaged of missing.


mike  Posted: 05/11/2017 16:50 PM 

Hello, the decal on my multiport valve was so faded i didn't know what port i had dialed in. i got a new top. i removed the handle, replaced the top plastic piece and put the handle back on. i then put it back in place and tighten the eight bolts. i now am getting leaking through the top of the multiport valve. Does it sound like a bad spider gasket? I don't see any other seal that could have failed. thanks, M


dlab  Posted: 07/30/2016 20:02 PM 

There are two rubber O-rings and a yellow C-ring on the stem that are not supplied with purchase of spider gasket assembly. Make sure you take those off the old one before re-installing.


Inyopools  Posted: 06/28/2016 16:03 PM  Inyo Product Specialist

broken washer - You have to relieve the pressure on the pin caused by the spring. One person suggested placing the handle in the `"Winterize" position to relieve the spring pressure. Then you can punch the pin out. See his further suggestions in the ~ seventh comment in this guide under "Pool Guy". Note: You apparently don't have to unscrew the top of the valve to access the washer.


Anonymous  Posted: 06/28/2016 13:14 PM 

If I want to only change the washer, can I simply leave everything in tact, and remove the handle by knocking out the pin, lift the handle off the shaft, remove the broken washer, replace the broken washer and replace the handle? Or do I have to remove the valve, and disassemble it before changing the washer?


Inyopools  Posted: 06/26/2016 13:05 PM  Inyo Product Specialist

jim - Unfortunately, we do not carry the Intex model SF20110 pool pump and motor. You may be able to find pump parts on the Internet.


jim  Posted: 06/24/2016 14:23 PM 

I have a Intex model SF20110 pool pump and motor. The motor was overheating and shutting off. I opened it up and found the plastic fan at the rear of the motor had every blade broken off. Where can I buy just that plastic fan. bearings seem to be OK


Inyopools  Posted: 06/10/2016 13:11 PM  Inyo Product Specialist

Terry - Sounds like a good place to start. There are some valve stem O-rings and washers there too that may have failed.


Terry  Posted: 06/09/2016 22:11 PM 

I replaced my spider gasket completely but now I have water coming out of my filter handle I think it's my spring is rusted ?


Inyopools  Posted: 11/06/2015 11:23 AM  Inyo Product Specialist

pool guy - Thank you for suggesting this easier alternate approach to removing the handle off of the multiport valve. We are always looking for easier ways to repair equipment. I will incorporate it into this guide.


pool guy  Posted: 11/05/2015 21:44 PM 

I would like to suggest an easier alternative step to remove the handle from the multi-port valve.
Instead of removing the top of the multiport valve from the body of the valve by removing the screws I would suggest taking time to mark a reference point on the top and side of the valve assembly to make sure that when you replace the top back on to the body that the two parts go back together in the proper position.
Next rotate the handle clockwise to the winterized position so that the pin in the handle has the ability to slide out of the handle without coming in contact with the top of the multi-port valve housing.
If you look at the head of the pin you should be able to tell if the surface area of the head of the pin is larger or smaller than the head of the opposite end of the pin.
If so, then use a nail or hole punch and a small hammer to gently tap the end of the pin that has the smaller surface area and drive the pin out of the hole in the handle.
Then remove the handle and the plastic washer. Then remove the screws and lift the top off of the bottom of the housing.
Remove and replace the spring and washers and spider gasket, if needed.
Then reassemble the top of the valve back onto the bottom of the valve housing. Reinsert the screws, reposition the handle and gently tap the pin back into its normal position. (small end in first) Be sure to tap it in, in the opposite direction that it came out. Another words, if you tapped it out from left to right be sure to tap it in from right to left.
Then the task is complete.


Inyopools  Posted: 05/30/2015 14:44 PM  Inyo Product Specialist

filter top - If by a "new top for my sand filter", you mean the multiport valve, then yes the spring is included in the valve.


Anonymous  Posted: 05/28/2015 10:34 AM 

I have ordered a new top for my sand filter, does the spring come with it?


Inyopools  Posted: 05/27/2015 9:06 AM  Inyo Product Specialist

tom - If you can't remove the spring to replace it, you generally have the option of buying the top assembly to the valve. But that costs almost the same as a new valve so at that point I would get a new valve.


tom  Posted: 05/26/2015 14:26 PM 

My spring is rusted so bad it wont move. It wont let the handle set securely


Anonymous  Posted: 10/21/2014 8:49 AM 

The spring can be more easily compressed using a pair of clamps with squeezable "pistol grips" for tightening. I purchased these years ago at Sears.


Inyopools  Posted: 07/29/2013 10:45 AM  Inyo Product Specialist

DT - If water is coming out the waste line on all settings, check the following. You may have a broken or weak spring that prevents the gasket from sealing or the new gasket you just replaced is damaged again. Make sure you turn off the pump before rotating the handle. Then check for cracks in the body of the valve between the ports.


DT  Posted: 07/28/2013 13:59 PM 

I had to replace the bottom of the multi valve port - the piece with the spider gasket. No matter which setting I put it on - all settings have a back wash return. I went back and they changed the set up = but it still backwashes - or water comes out of the backwash pipe.. Suggestions?


Anonymous  Posted: 05/18/2013 13:36 PM 

Thanks for the inputs, I just refurbed min with a little elbow grease and some Armor All - had suffered through replacing sand etc :(


Inyopools  Posted: 05/07/2013 8:34 AM  Inyo Product Specialist

OakPool - The part number for a 1 1/2" Praher SM10-2 for DE filters (threaded) is 261177. The part number for a 2" Praher SM10-2 for DE filters (threaded) is 261152. Note: the manufacturer on these valves shows as Pentair. Praher valves are used by several filter manufacturers.


OakPool  Posted: 05/06/2013 19:55 PM 

I have Praher SM10-2 valve for D.E. filter. Looking for a top assembly or the whole multiport valve. What's the correct model/part number?


InyoPools  Posted: 07/31/2012 17:32 PM  Inyo Product Specialist

KVK - You should be good to go. Unlike some filters, the multiport valve filters are self-purging. They exhaust the air in the system through the return ports.


KVK  Posted: 07/28/2012 12:11 PM 

Regarding the release of pressure and hand tightening the valve cap in step 2: Do I have to do anything else to the filter tank at the end of the job or is it good to go?


Anonymous  Posted: 07/18/2012 14:27 PM 

Great detailed information not found in videos.