Replacing Pentair 1.5" multiport with 2" multiport

ntobik

Well-known member
Jul 31, 2015
98
Pittsburgh, PA
I have a Triton II sand filter, with an old Pentair PacFab multi-port. The multi-port is 1.5", but when I had my pool redone they went with 2" piping everywhere. The plumbing stepped down to connect to the multi-port.

I'm putting in a new heater and this morning in preparation to plumb I unhooked a junction which put a tiny bit of weight on the multiport piping and the multiport cracked. This was a sign that the plastic has become brittle and it's time for a new port.

So the question is, can I just buy the Pentair Triton multi-port valve in 2" and hook things up?

A second question is what will 2" piping everywhere buy me? Right now it's 2" except for the port which restricts flow to 1.5". My guess is with 2" I'll be able to filter slightly more water per hour without the restriction. Thoughts?
 

mas985

TFP Expert
LifeTime Supporter
May 3, 2007
12,382
Pleasanton, CA
So the question is, can I just buy the Pentair Triton multi-port valve in 2" and hook things up?
Yes


A second question is what will 2" piping everywhere buy me? Right now it's 2" except for the port which restricts flow to 1.5". My guess is with 2" I'll be able to filter slightly more water per hour without the restriction. Thoughts?
Flow rate will increase some but energy use will increase as well.
 

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