3-Port Diverter Valves - Restriction?

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M

MN_poolguy

Active member
May 18, 2020
26
Minnesota
Hi all,
Installing a new pool and I was originally going to order Jandy valves for the equipment pad but between estimated shipping times and cost, I made a last minute decision and went with Pentair valves. Grabbed some 2 port and 3 port diverter valves. The 3-Port valves surprised me. After choosing 2 inch suction size plumbing it sure looks like the valve will restrict the flow to significantly less than normal 2" flow rates. The actual "venturi" inside the valve is more a narrowed vertical opening. Is this normal for a 3-port valve? Did some searching but couldn't find an answer anywhere...
 
Which valves did you get? 1 1/2 inside/2" slip outside or 2" inside/2 1/2" slip outside?

www.pentair.com

Diverter and Check Valves – 1-1/2 in. and 2 in.

Pentair's lube-free pool valves have excellent flow characteristics and are manufactured to strict quality standards. Shop our pool diverter valves today!
www.pentair.com www.pentair.com

The diverter, part 9, opens up 270 degrees of the water flow...


Post pics of what you have for the diverter.
 
ajw22 said:
Which valves did you get? 1 1/2 inside/2" slip outside or 2" inside/2 1/2" slip outside?

www.pentair.com

Diverter and Check Valves – 1-1/2 in. and 2 in.

Pentair's lube-free pool valves have excellent flow characteristics and are manufactured to strict quality standards. Shop our pool diverter valves today!
www.pentair.com www.pentair.com

The diverter, part 9, opens up 270 degrees of the water flow...


Post pics of what you have for the diverter.
Click to expand...
 
MN_poolguy said:
I have the 2” - 2 1/2” version... you can see a bit of what I’m talking about in that exploded diagram. Here is a pic:
Click to expand...
getting ready to replumb and add these valves myself. Did you go with them or did you contact Pentair? Someone else posted a picture of his valve he bought from Amazon with the same concern. He said the valves look to have approximately only a 1.5" opening.
 
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