Upgrade recommendations for replacing 14" Intex sand filter combo?

[PoolDoc]

Power-Flow II flow / head ratings, including SP1750



Also from https://www.hayward-pool.com/shop/en...ii-a-pppow2--1


BTW, the KW rating in the first image is nominal, not actual. I can't find actual amps at load for this pump ANYWHERE.

[Pappy]

Thanks! Now if I could just get the same info - including low speed - for the PowerFlo SP15922S. I suspect the "Power-Flow II" and "PowerFlo Matrix" tables and charts all have very similar numbers, but I don't know that.

I'm worried that the SP1750, when the vacuum hose and vacuum head are attached, will not have enough flow to vacuum the pool floor. I don't know how much additional head the vacuum adds and I don't know how much flow is needed for vacuuming. I have this head

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

If the SP15922S on low has performance similar to the SP1750, and it won't vacuum on low, I can turn it on high, then throttle the flow as necessary.

[Pappy]

I got a response from Hayward today. It was really helpful.

What I sent:
"Sent: 06/07/2018
I am installing a new filter system in my pool. I'm considering the
> SP15922S PowerFlo Matrix 1 HP Dual-Speed pump. Where can I find
> performance curves for high and low speeds?"

Their response:
"Thank you for your email inquiry. The only
information we have for this pump, is what we offer on our website.
WWW.HAYWARD-POOL.COM. I will speak with my leads, and see if we have
any performance curves for this model pump."

I guess they either don't know what their products will do, or they have some reason to keep me from knowing.

[PoolDoc]

They advertise performance on 'premium pumps'. They advertise price on AG pumps. It wouldn't do have data showing that 'premium' pumps didn't have any real performance advantage. I suspect they DO have some advantage, but not that much.

Regardless, you can be SURE the MARKETING department controls what the ENGINEERING department releases!

That said, I'm told many AG pumps are a pain to clean and service, but I'm not sure if that's because of the pump, or the location and piping.

[Pappy]

I know you can't say for sure without seeing and measuring and,,, but in your opinion, Will the Hayward 1 hp 2 speed pump, paired with the 21" Hayward filter be a reasonably good system? Would the 1/2 hp pump be any better? Again, I understand you can NOT say for sure - one way or the other. But,?,?,?

It seems like it can't be too bad since Hayward sells a system that has the 1 hp pump paired with an 18" filter.

And by the way, a Hayward 1 hp 2 speed Super Pump is about twice the cost of the PowerFlo Matrix 1 hp 2 speed.

https://www.amazon.com/Hayward-SP260...ds=SP2607X102S

https://www.amazon.com/gp/product/B0...=AGOKDG42D8KUC

[Pappy]

Just pulled the trigger on this pump:

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Sold by: Amazon.com Services, Inc.
$258.55
Condition: Used - Like New

Yup, it's a gamble, but it's less than half price and less than the Hayward 1hp 2 speed new, and it's from Amazon, so I "should" be able to return it if I need to.

I also ordered a Hayward S210T filter along with various fittings, valves and accessories.

I'm getting ready to have the mostest sparklingest Intex pool in the DFW area, thanks to PoolSolutions, PoolForum, and the PoolDoc.

[Pappy]

What is the best way to connect the hard piping to the pool wall fittings? Since the walls flex and move a considerable distance, there needs to be a flexible connection. I think 1-1/2" reinforced vinyl tubing is what I need, but I'm not sure.

Would this work? https://www.lowes.com/pd/EASTMAN-1-1...ose/1000365073

[PoolDoc]

I'd look at this:
1.5" ID 70 psi Braided Flexible Chemical Resistant PVC Tubing
instead.

Flex PVC, like you found at Lowes varies a lot in quality, and I have never discovered how to tell the good stuff (rare) from the junk (common). The typical stuff, which I've purchased from SCP wholesale supply, gets pinholes after a year or so.

The reinforced flex is made for insert fittings and clamps, but can be glued if you are very careful. It tends to not maintain a perfectly round cross-section, so you have to be careful when you insert it.

Maybe you and Brokk can work out a 'works-for-everybody' method of plumbing to Intex-type pools?

[Pappy]

This is what came with the SP1023 - non-G - bulkhead fitting from Amazon, in a sealed Hayward plastic bag: a bulkhead fitting, 1 backing nut, 2 rubber washers and 1 cork washer.

I'm not going to use the cork washer at all. I will use both rubber washers, one inside and the other outside. I don't think the outside will be necessary for sealing, but it will provide a cushion between the vinyl liner and the hard edge of the backing nut. I don't think there would be any advantage to a sandwich washer for me. If one had 2 layers, where the vinyl liner was supported by a metal or fiberglass shell, the sandwich washer might be useful in ensuring water couldn't get BETWEEN the layers.

[PoolDoc]

Pretty sure you received the 'G' model. As best I can tell, it is a superset of the standard model.

I'd bet the brown ring is fiber, not cork, and is intended to allow you to tighten the fitting without twisting the liner. But you can probably accomplish the same thing by spraying a bit of silicone spray (like this: DuPont Teflon Non-Stick Dry-Film Lubricant )