Multiport Leak - gasket need replacement?

[stslimited84]

Hey all!

Pool opened up with minimal fanfare There is a leak at the multiport, which aside from losing water/chemicals, I believe is letting air into the system causing the pump to deprime after it stops running. Is this a simple case of having to replace a gasket or something else?

 

[1poolman1]

Hey all!

Pool opened up with minimal fanfare There is a leak at the multiport, which aside from losing water/chemicals, I believe is letting air into the system causing the pump to deprime after it stops running. Is this a simple case of having to replace a gasket or something else?

View attachment 491623

The diverter seal also seals the body on those valves. Part number 272409.

 

[stslimited84]

The diverter seal also seals the body on those valves. Part number 272409.

Thanks for the quick reply. Do I need to replace both seals? Is it pretty involved or straight forward?

Think that is likely the cause of the air getting in? I see no obvious issues elsewhere.

 

[Texas Splash]

I believe is letting air into the system causing the pump to deprime after it stops running.

Good catch. Certainly something you can handle.

 

[1poolman1]

The diagram only indicates one gasket, part 10. There is an O ring on the stem, part 8 that you can try to replace, but the leak seems to be at the separation of the top and bottom unless it is running down from the handle. Be very careful disassembling the top. That spring is very strong and it has to be re-assembled exactly as in the diagram. All of the parts are listed on the 6th page of the attached PDF.

 

[stslimited84]

The diagram only indicates one gasket, part 10. There is an O ring on the stem, part 8 that you can try to replace, but the leak seems to be at the separation of the top and bottom unless it is running down from the handle. Be very careful disassembling the top. That spring is very strong and it has to be re-assembled exactly as in the diagram. All of the parts are listed on the 6th page of the attached PDF.

Ok great. I misread what you typed earlier to be two seals, I understand what you're saying now.

Thanks!

 

[stslimited84]

The diagram only indicates one gasket, part 10. There is an O ring on the stem, part 8 that you can try to replace, but the leak seems to be at the separation of the top and bottom unless it is running down from the handle. Be very careful disassembling the top. That spring is very strong and it has to be re-assembled exactly as in the diagram. All of the parts are listed on the 6th page of the attached PDF.

Thanks, this was helpful. Looks like the handle O-ring (Part JV18) is leaking substantially now so I have to replace that.

 

[stslimited84]

It looks like only the stem oring is contributing to the leak rather than the spider gasket as i originally thought. Is it worthwhile to do both since I'm opening it up or leave well enough alone and just do the stem?

 

[1poolman1]

It looks like only the stem oring is contributing to the leak rather than the spider gasket as i originally thought. Is it worthwhile to do both since I'm opening it up or leave well enough alone and just do the stem?

You might find it easier to replace the valve top assembly, #272422. Here is one place that has them:

Pentair HiFlow Valve Top Assembly 272422

Replacement Top Assembly for Pentair HiFlow Valves (261049, 261050 and 261142 models).

sunplay.com

If it was me and I was just replacing parts, I would replace any part that I disturbed so I don't have to go in a second time.

 

[stslimited84]

You might find it easier to replace the valve top assembly, #272422. Here is one place that has them:

Pentair HiFlow Valve Top Assembly 272422

Replacement Top Assembly for Pentair HiFlow Valves (261049, 261050 and 261142 models).

sunplay.com

If it was me and I was just replacing parts, I would replace any part that I disturbed so I don't have to go in a second time.

The stem oring is that difficult to replace? In comparsion to the cost differential that is ($7 vs $180)?

 

[1poolman1]

The stem oring is that difficult to replace? In comparsion to the cost differential that is ($7 vs $180)?

Its the disassembling and reassembly that is a bit difficult. There is (or was) a tool that could be used to compress the spring so that the handle could be re-attached. The spring has to be able to keep the diverter completely sealed against the gasket and you'd be surprised at how much pressure the pump exerts against it. The spring is very strong.

 

[Texas Splash]

Not the greatest video, but you get the idea. Turn down the volume, they have some annoying music blasting. Skip to about the 1 minute mark.

 

[Scoop]

stslimited84
I built a rig to compress the Spring in the Top Assembly for most models' Multiport Valves. The info is in this thread :

Need new spider gasket help!

Hey all! I have a leak in the sand filter diverter piece. The valve on top is working but it’s not sealing closed. It finally failed and no matter what I do water is coming out of the backwash/waste port regardless of the valve setting. All the YouTube videos I’ve seen so this to be the spider...

www.troublefreepool.com

It works ok but is time-consuming and the Wing Nuts are a little tough on the fingers to tighten to compress the Spring but I wanted that tool that I'm guessing was mentioned earlier in this thread. The tool is expensive with a large price range online. I bought it (of all places) on a "Medical Equipment" site. I have no idea why the item is located on a Med site but it was the lowest price I could find online. Here's the site link to the item :

Search Results

www.cascadehealthcaresolutions.com

The Bubba II Multi-Valve Compression Tool
Part # F-VRJ
$229.25 USD

That site doesn't have an image of the tool posted. Included in this post is the pic.

I haven't used it yet on my installed MPV but when I received it I tried it out on my spare Top Assembly. It works as advertised, very easy to compress with the Handle.

 

[stslimited84]

Not the greatest video, but you get the idea. Turn down the volume, they have some annoying music blasting. Skip to about the 1 minute mark.

Replaced the oring on the stem today using this video as a reference. Thanks!

Will check tomorrow am once the blue gasket goop i applied to the spider gasket is set.

 

[stslimited84]

Repair worked great

Thanks for the help!