Pentair TR60 Buttress blows off.

[Roscoe]

I am confused. I came home and found my TR60 sand filter was leaking (with the pop ups cleaning) underneath the sand filter buttress.
I tightened the top cap and it blew off.
I changed the O ring - still leaked, tighten it and it blew off.
TR60 has a new buttress design; I ordered it.

I pulled the water line off ,for the pop up gear set, and turned on the pump to blow the line (and rinsed the gear set as well).
I pulled out the backwash valve set and did the same thing.
No issues.

I replaced the buttress with the new design and the new O ring.
Started it up, bled the line, tighten the buttress to stop the leak and then the buttress blew off.
Started again, opened all pool lines (to reduce pressure) and the buttress blew off.

The pop ups cycle as as they should.
All pool lines exhaust water was as assumed.
We got down do 25 degrees but the pump is always on anyway. The leak started in the afternoon (around 60 degrees).

I can run everything as long as I allow the TR60 buttress function with a small water leak.

Thoughts?
5ish year old TR60; warped?

 

[1poolman1]

I am confused. I came home and found my TR60 sand filter was leaking (with the pop ups cleaning) underneath the sand filter buttress.
I tightened the top cap and it blew off.
I changed the O ring - still leaked, tighten it and it blew off.
TR60 has a new buttress design; I ordered it.

I pulled the water line off ,for the pop up gear set, and turned on the pump to blow the line (and rinsed the gear set as well).
I pulled out the backwash valve set and did the same thing.
No issues.

I replaced the buttress with the new design and the new O ring.
Started it up, bled the line, tighten the buttress to stop the leak and then the buttress blew off.
Started again, opened all pool lines (to reduce pressure) and the buttress blew off.

The pop ups cycle as as they should.
All pool lines exhaust water was as assumed.
We got down do 25 degrees but the pump is always on anyway. The leak started in the afternoon (around 60 degrees).

I can run everything as long as I allow the TR60 buttress function with a small water leak.

Thoughts?
5ish year old TR60; warped?

Are you talking about the dome on the top of the tank? Sorry, but if it blew off, there is a strong likelihood that the threads in the tank are so damaged that the only true repair is a replacement tank. It will happen again and again as the filter gets dirty and the internal pressure rises. Not really safe to continue to use that tank in that condition.

 

[Roscoe]

Yes, the dome. And yes that is my fear. I see no thread damage but that really means nothing. And the tank is 5ish years old.

 

[JamesW]

The old thread was a V thread and the new thread is a "Buttress" style thread.

The buttress style thread is very strong, so it is very unusual for it to blow off.

Can you show the dome threads and the filter threads?

Can you show the filter label with the date?

 

[JamesW]

 

[JamesW]

What part number did you get?

It looks like the correct part number is 152519 (Closure face seal - 6 in. buttress thread).

https://www.pentair.com/content/dam/extranet/nam/pentair-pool/commercial/filters/triton/triton-instructions-english-spanish-french.pdf

 

[Roscoe]

The dome thread is now brand new (152519Z), the original did the same thing. I saw something about the V type is an older version, mine is 2020ish sand filter

 

[JamesW]

0101 was made in January 2001, which makes it 23 years old?

 

[JamesW]

The dome thread is now brand new

Can you show the threads?

What part number did you get?

 

[JamesW]

And the tank is 5ish years old.

This looks way older than 5 years.

Do you have a purchase and install date?

Can you show a really clear picture of the threads?

Can you tell if the threads are V threads or Buttress threads?

 

[JamesW]

You probably have an obstruction in the returns or maybe a valve misconfiguration.

The tank looks about 23 years old, not 5 years old.

 

[JamesW]

Replace the laterals (the TR60 is about 5ish years old)?

• Mar 6, 2021

3 years ago, you said that the filter was 5 years old and it is still 5 years old?

 

[Roscoe]

Perhaps. I purchased it 5ish years, so maybe I got burned.
1036 is the filter
1037 is the new
1038 is the old buttress

 

[JamesW]

152519Z looks to be correct.

https://www.pentair.com/content/dam/extranet/nam/pentair-pool/residential/parts-sheets/product-catalog-parts/pool-filter-parts.pdf

 

[JamesW]

1038 is the old buttress

1038 looks like it might be a V thread and not a buttress thread.

Look at the thread carefully.

If you use the wrong thread, then the threads will be damaged.

You cannot interchange a V thread and a buttress thread.

You probably got a used filter with the wrong dome top and that is why it was blowing off.

At this point, you probably need a new filter.

 

[Roscoe]

You probably have an obstruction in the returns or maybe a valve misconfiguration.

The tank looks about 23 years old, not 5 years old.

All lines have been blown with the output lines taken off. I don't see an inbound obstruction would cause but will look. Bought the tank in Phoenix 5 ish years ago still in the box, but who knows

 

[JamesW]

Does the old dome top have a part number?

Can you show a better picture of the threads?

 

[Roscoe]

AZ sun - all is white
Pretty much the best shot I can make of the old buttress

 

[Roscoe]

staring at the original, I think it makes it a Detail A (the post update) on the old buttress

 

[JamesW]

It looks like you got a used filter with damaged threads whenever you got the filter.

I think that the filter is probably about 23 years old.

In any case, I would replace the filter.

Maybe consider going with a 420 sqft cartridge filter.