Matched Pool Equipment Sets: Pump / Filter / Valves / Feeder / [Heater] / [etc]

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Matched Pool Equipment Sets

[ in edit - June 2018 ]

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Matching pipe size to pool volume

Pipe --- max flow ------ Max pool vol ----- velocity ---- pressure loss
1.25" ----- 25 gpm ------ 12,000 gallons ----- 5.5 fps ----- 3.7 psi/100ft
1.5" ------ 35 gpm ------ 17,000 gallons ----- 5.7 fps ----- 3.2 psi/100ft
2.0" ------ 60 gpm ------ 29,000 gallons ----- 5.9 fps ----- 2.5 psi/100ft
2.5" ------ 80 gpm ------ 39,000 gallons ----- 5.5 fps ----- 1.8 psi/100ft
3.0" ----- 125 gpm ------ 60,000 gallons ----- 5.5 fps ----- 1.4 psi/100ft

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Matching SAND filter size to pool volume

Dia. ----- Area ----- Filter ----- Backwash ----- Optimum ----- Max pool vol.
18" ----- 1.8 sft ---- 22 gpm ----- 27 gpm ----- 11,000 gallons -- 13,000 gallons
21" ----- 2.4 sft ---- 29 gpm ----- 36 gpm ----- 14,000 gallons -- 17,000 gallons
24" ----- 3.1 sft ---- 37 gpm ----- 47 gpm ----- 18,000 gallons -- 23,000 gallons
30" ----- 4.9 sft ---- 59 gpm ----- 74 gpm ----- 29,000 gallons -- 36,000 gallons
36" ----- 7.1 sft ---- 85 gpm ---- 107 gpm ----- 41,000 gallons -- 52,000 gallons


- Sorry, this is going to take a lot more work than I thought. I've done this many times for
- local customers, but with commercial equipment, which comes with MUCH better
- engineering data. I was naive to assume what it would be equally easy with residential
- equipment. Unfortunately, ALL the manufacturers make the relevant data difficult to find,
- or even unavailable.

PoolDoc July 2018



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