I currently have a 21 foot ab pool....had it installed in 2006. I have I believe a 21 inch sand filter and a 1hp pump.... im trying to figure out the the turnover rate of the pump and filter.... the pump itself says 60gpm(1hp)..the filter says filter rate is 25gm and design rate is 45gpm. im alittle confused, wouldnt the pump be too big then for the filter? all the pool shops sell 21 inch filters with the 1hp pump.. now how do i figure out what gpm im pushing? is it the 60gpm that the pump list, or is the 25gpm that is on the filter? im just trying to calculate the number of hrs to turnover the pool water twice on my pool....once again, 21 foot ab, i believe around 10,500 gallons or so..thanks, Pete
question on flow rates and proper pump size..run times etc..
- Thread starter yankeeslover
- Start date
Re: question on flow rates and proper pump size..run times e
Tell us your filter pressure and your suction head if you know it. If not then describe your plumbing to us. That'll get us started helping you figure it out. We'll also need the model of the pump.
Tell us your filter pressure and your suction head if you know it. If not then describe your plumbing to us. That'll get us started helping you figure it out. We'll also need the model of the pump.
Re: question on flow rates and proper pump size..run times e
oh boy, no idea on pressure.. i will give the model of pump and filter, pump is a haywood powerflo LX 1hp... the filter is a hayward dreamline model S190TSCP.. I have the input hose and output hose both around 4 feet long..no other equipment
oh boy, no idea on pressure.. i will give the model of pump and filter, pump is a haywood powerflo LX 1hp... the filter is a hayward dreamline model S190TSCP.. I have the input hose and output hose both around 4 feet long..no other equipment
Re: question on flow rates and proper pump size..run times e
You need to know your filter pressure in order to even guess about the flow rate. There should be a gauge on it.
You need to know your filter pressure in order to even guess about the flow rate. There should be a gauge on it.
Re: question on flow rates and proper pump size..run times e
filter pressure on the guage on the filter says 10psi
filter pressure on the guage on the filter says 10psi
Re: question on flow rates and proper pump size..run times e
Dave, When you get a chance will you provide the formula for determining flow rate or is it already in Pool School and I missed it?
Dave, When you get a chance will you provide the formula for determining flow rate or is it already in Pool School and I missed it?
Re: question on flow rates and proper pump size..run times e
If you look in the pumping section you'll find Mark's sticky that includes the spreadsheet to figure out flow using several different parameters.
If you look in the pumping section you'll find Mark's sticky that includes the spreadsheet to figure out flow using several different parameters.
Re: question on flow rates and proper pump size..run times e
Looking at the curve it looks like you're flowing about 50 to 60 gpm. That's a lot for that filter.
Looking at the curve it looks like you're flowing about 50 to 60 gpm. That's a lot for that filter.
Re: question on flow rates and proper pump size..run times e
what would i need to do? get a new pump? this is my sixth season using this combination
what would i need to do? get a new pump? this is my sixth season using this combination
Re: question on flow rates and proper pump size..run times e
If it's working fine then don't worry about it.
Adjust your runtime to something you think will work and adjust it from there until you're happy.
If it's working fine then don't worry about it.
Adjust your runtime to something you think will work and adjust it from there until you're happy.