Re: Upgrade recommendations for replacing 14" Intex sand filter combo?
My thinking was that since Hayward pairs the 18" filter with the single speed 1 HP pump and a 1.5 HP 2 speed pump as complete systems - I couldn't be going too far wrong with a 1 HP 2 speed pump. If it needs throttled to backwash on high without flushing sand out - so be it. The only way I see this is a bad deal is if the pump doesn't provide enough circulation on low, and I don't think that's likely. As far as the valves go, I hadn't realized one was "pool rated" and the other "industrial".
Intex 15ftx4ft 4500 gal. 3/4 HP Pentair WhisperFlo pump. Hayward 21" sand filter. Taylor K-2006 & K-1106 kits. PF=27
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