Elevate filter off equipment pad… yes/no?

TC_Bucks

Member
Aug 10, 2023
8
Lansdale, PA
Pool Size
20000
Surface
Plaster
Chlorine
Salt Water Generator
New pool owner here. Currently undergoing a complete renovation of our inground pool. New tile, stone coping, and stonescapes mini pebble aggregate. I figured while the job was getting done I would replace the very old single speed pump with a variable speed pump. The problem I am having is the inlet port of the HiFlow valve (Pentair 261142) is lower than the outlet of the pump… It was previously hooked up to a slide valve that had an inlet for the pump much higher. In hindsight, I probably should have bought the multiport valve kit (Pentair 261152) that doesn’t have a very low inlet design.

My question is… would it be ok to just put the filter up on some pavers to give me the roughly 2” clearance I need? I’m trying to do a straight connection with 2x 45 degree angles for better flow… If not, is it ok to come out of the pump and drop the plumbing down and then back up to the valve (like a sideways ‘Z’)?

I’m learning so much but that is because I know so little… bought a home with a pool and have never used it or the equipment!

Picture shows a work in progress as I try to get this all setup before the pool renovation is complete. Blue line is pointing to the inlet of the valve which looks higher in the picture than it actually is.
 

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If you remove the base and use a "Street" 90 at the pump, it will probably work.

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Use (2) 22.5 degree fittings to make an elevation change.

2" schedule 40 PVC 22-1/2 degree elbow with socket connectors (465-020)

Alternate Part Numbers: 416-020 (Spears), 465-020 (Lasco).




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Note: Pool PVC (polyvinyl chloride) should be marked "Schedule 40". Schedule 40 PVC is made for water under pressure. If the pipe has ASTM D 1785 on the pipe, it's suitable for pressure applications. A rating of ASTM D 2665 means non pressure applications and should not be used for pools.[1]

A pipe can be dual rated ASTM D 1785 and ASTM D 2665, but it has to say ASTM D 1785 if it's going to be used for pressure.

The pipe should also be labeled NSF-PW (National Sanitation Foundation - Potable Water) and Schedule 40 PVC.

You may also find Schedule 80 PVC in stores. Schedule 80 PVC is designed for higher pressure applications and can be used in place of Schedule 40 PVC.

Note: ASTM D1785 is for pipe.

ASTM D1784 is the specification for the PVC material.

ASTM D2466 is the correct rating for the fittings.
 
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Use (2) 22.5 degree fittings to make an elevation change.

2" schedule 40 PVC 22-1/2 degree elbow with socket connectors (465-020)

Alternate Part Numbers: 416-020 (Spears), 465-020 (Lasco).




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A lot of feedback... really appreciate it! So no one is suggesting just raise the filter lol. I think I'm going to go with the street 90s and the two 22-1/2 fittings. Was trying to avoid 90 out of the pump but I guess in my case it is unavoidable.
 
Was trying to avoid 90 out of the pump but I guess in my case it is unavoidable.

If going 90 right out of the pump bothers you then use a straight pipe out of the pump a bit then a 90 horizontal, then a 90 down, a 90 across, and a 90 up to the MPV. Three more 90's will make no visible difference in your flow or efficiency.

Whatever you like will work fine.
 
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As long as the water velocity is below 6 feet per second, the 90 out of the pump is fine even though most manufacturers say not to use a 90 at the pump inlet or outlet.

You can use a sweep street 90 (slip/socket X spigot) if that will fit.

This avoids a hard 90 at the pump.

I would not use multiple 90s as that looks goofy and it can be noisy due to the turbulence.

(2) 22.5 degree fittings or (2) 45 degree fittings would be better to address an elevation change.




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