How to Seat Inlet, Outlet O-Rings on Pentair Clean and Clear C-160318?

[Mark Shvitz]

I installed a Pentair Clean and Clear C-160318 filter. I may have had too much faith in the unions on the inlet and outlet. I figured the engineers had worked it out so it was simple to close them. Instead of sealing them up and then attaching pipes to them with glue, I attached the pipes first and planned to seal them later.

The O-rings don't seem to want to seat anywhere. I thought they might seat themselves when I tightened the collars, but they do not.

Is there a trick to seating these things, or should I just cut the pipes, seal them up with the filter on its side in the yard, and then use cemented couplers to put the pipes back together?

 

[MSchutzer]

Try a bit of silicon grease on the o-ring to hold it in place while you screw the halves of the unions together.

 

[Mark Shvitz]

I will see if I can do that. It's very hard to get any room to work because I did the pipes first.

 

[Mark Shvitz]

The solution was simple. Remove the filter from the system entirely, turn it on its side, seat an O-ring, turn it over, and seat the other O-ring. Then reinstall the filter. It turns out the rings will stay in place without grease.

 

[proavia]

The solution was simple. Remove the filter from the system entirely, turn it on its side, seat an O-ring, turn it over, and seat the other O-ring. Then reinstall the filter. It turns out the rings will stay in place without grease.

The O-rings should still be lubed with silicone pool lube regardless if they stay in place or not.