Remove filter backup ring??

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Chad_in_TX

Chad_in_TX

Active member
Jul 24, 2019
32
Plano, TX
I just noticed my backup ring isn’t seated properly along the rim. I’ve never taken it out before or touched it, and thought it was bolted down… guess not. So before I go trying to pull it up/out, will it affect the tension in anyway if I mess with it? I did notice the last time I took this apart, it was a little harder to get the cover seated correctly (apparently this was probably misaligned since then)…
 

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I have the standard Pentair DE filter with grids (not the quad as you do) and have the same back up ring. Yours is deformed which is why it got pushed down so low. I would just cut that bent part with a hacksaw and remove it. You will need to purchase a new one.
I clipped the picture from the manual for the Quad DE filter which is item #10. It should just sit down in the bottom half and give support to the large o-ring seal.
Pentair Filter Ring & Seal.PNG
 
HermanTX said:
I have the standard Pentair DE filter with grids (not the quad as you do) and have the same back up ring. Yours is deformed which is why it got pushed down so low. I would just cut that bent part with a hacksaw and remove it. You will need to purchase a new one.
I clipped the picture from the manual for the Quad DE filter which is item #10. It should just sit down in the bottom half and give support to the large o-ring seal.
View attachment 371999
Click to expand...
HermanTX said:
I have the standard Pentair DE filter with grids (not the quad as you do) and have the same back up ring. Yours is deformed which is why it got pushed down so low. I would just cut that bent part with a hacksaw and remove it. You will need to purchase a new one.
I clipped the picture from the manual for the Quad DE filter which is item #10. It should just sit down in the bottom half and give support to the large o-ring seal.
View attachment 371999
Click to expand...
Wow. I didn’t even realize it was deformed! Thought it was manufacture with that “break”!
Just out of curiosity, would that impact my pressure? For the longest time, it’s been running high and nobody can figure out why…. Done multiple blow outs of the return lines, etc.
 
Chad_in_TX said:
Just out of curiosity, would that impact my pressure? For the longest time, it’s been running high and nobody can figure out why…. Done multiple blow outs of the return lines, etc.
Click to expand...
I don't see how that contributed to a higher pressure. The pressure in the filter is a function of the pressure drop (or flow) from the external part of the grid to the inside, where it then exits the filter. Dirty grids (quad filter) or any restriction in the flow exiting the filter will increase the pressure of the filter. Also, you do not want to overfill with DE. The goal with DE is to coat the filter which then traps fine particles in the flow.
 
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