Your head loss should drop by a factor of 1/4 as shown by Davenj. So if you run at 60 feet of head on high speed, your low speed head should be about 14 feet.
Re: Question regarding 2 speed pump for energy savings.
Your head loss should drop by a factor of 1/4 as shown by Davenj. So if you run at 60 feet of head on high speed, your low speed head should be about 14 feet.
Mark
Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater
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