Pump is shot. Shopping for replacement...

[mas985]

Technically, there is no pump on the market, except maybe an Intex, that is a correct size for your filter. Your filter has a max flow rate of 35 GPM but ideally, you should be around 21 GPM with that filter.

However, the good news is that the Power LX 1 HP pump would provide about 49 GPM on high speed and about 24 GPM on low speed. So one option would be to replace the pump motor with a 2 speed motor and operate on low speed all the time.

[Scrapple]

With the short pipe run I have, my pump can do about 60 GPM, which is pointless if the filter can only do 35. I'm stepping down the HP 2 speed or not. Thanks for the input.

[BigDave]

I think mas985 is telling you that a 2 speed motor may be the only way to get as low as you need to go.

[Scrapple]

Just ordered the 3/4 HP Hayward Matrix from Amazon. Might have to put in a new outlet. My old pump has a twist lock cord. Think the new one is standard 3-prong.

[BigDave]

Or you can change the plug. Twist-lock is code in my town. Consider plumbing in a valve between the pump outlet and the filter to throttle the flow - that's still too much pump for that filter.

[CarlD]

Twist-lock is code in my town, too, and the cord can't be more than 3' long.

[mas985]

I wish you had checked in before purchasing. The 3/4 HP matrix has close to the same flow rate as the Powerflo LX 1 HP. 48 GPM vs 49 GPM so you really are no better off. This is why it is generally a mistake to size a pump by the label HP rating. You would have been better off with a two speed on low speed.

BTW, how did you come to 60 GPM? That is much too high for that pump on such a small filter.

[Scrapple]

That is what is listed on the pump label. I will use a valve to throttle the flow rate.

At some point I will post pics of the pool to see if anyone can ID what brand it is. Came with the house, wife won't let me tear it down. I still have to fix a leak around the skimmer. It never ends.

[Scrapple]

Would this one work? Looks like the ends come off and can be threaded into the inlet.

[BigDave]

Inlet of the filter? I don't know if it would thread directly on - you'd probably need a threaded version of that valve and a nipple.
I like ball valves for throttling. PoolDoc recommends gate valves because they're easier to operate.
Hint: When you winterize, set the ball valves to 45 degrees - water is trapped in the valve body when it's open or closed.