Looking to replace a 20+ year old pump and sand filter for a small in-ground pool. I have the older filter info (replacing it with the same make and model), but on the old pump all the details have worn away. It is a 110V pump. Pool is about 10K gallons. From what I can find online I need a pump rated at at least 21 GPM. The sand filter I have I am replacing lists these stats: Filtration Rate: 20 GPM, Filtration and Backwash Design Flow Rate: 52 GPM. There is probably about 40'-50' of 1 1/2" piping running to skimmer, drain and returns at the greatest length. Am I correct that I want a pump that can do at least the 21 GPM but no higher than the filters design rate of 52 GPM? Or do I worry about the lower filtration rate listed of 20 GPM? Is there any advantage of getting a pump closer to the 52 GPM spec, w/o going higher than that (as I assume that is asking for damage)? Thanks in advance for any help!
Replacing 20 year old san filter and pump
- Thread starter stjones
- Start date
Did you think about replacing the filter with a cartridge type? Just because you always had a sand filter doesn't mean you have to put the same back. Cartridge and DE filters do a better job than sand, but DE is more work. I love the DE filtering and I have heard the cartridge is nearly as good. No backwashing needed with cartridge.
The costs seem to be almost double that of the sand filter - and that's beyond my budget. The filter and pump I currently have have worked like a champ for 20 years.
- Apr 10, 2018
- 6,396
- Pool Size
- 18375
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
Consider a variable speed pump. No worries about flow rates since you can adjust speed/flow. You should see significant energy savings.
Again, cost is an issue. VS pumps are more than double the price of a single speed pump.
- Apr 10, 2018
- 6,396
- Pool Size
- 18375
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
I understand. A VS would eventually pay for itself, but upfront costs are hard to swallow.
Not sure if you've received an official welcome to TFP, so:
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I understand. A VS would eventually pay for itself, but upfront costs are hard to swallow.
Not sure if you've received an official welcome to TFP, so:
Welcome to TFP Mr. Jones!
Wade around a bit in pool school and feel free to ask for help. Here's a good set of articles to get your feet wet:
Pool Care Basics Archives
Your one-stop shop for all things TFP to include: ABCs of Water Chemistry, Recommended Chemicals/Levels, Test Kits, Troubleshooting, and much more!
Check out the TFP YouTube page:
Thanks for the welcome! And Steve is fine.I understand. A VS would eventually pay for itself, but upfront costs are hard to swallow.
Not sure if you've received an official welcome to TFP, so:
Welcome to TFP Mr. Jones!
Wade around a bit in pool school and feel free to ask for help. Here's a good set of articles to get your feet wet:
Pool Care Basics Archives
Your one-stop shop for all things TFP to include: ABCs of Water Chemistry, Recommended Chemicals/Levels, Test Kits, Troubleshooting, and much more!
Check out the TFP YouTube page:
Trouble Free Pool
With over 200,000 members, TFP is the largest and most influential pool & spa website on the Internet. The reason is simple: TFPC (Trouble Free Pool Care) is...
Waterway has a PD110 pump that is DOE legal, single speed and can run on 110v. I have installed 2 so far and they are a great pump.
Example:
www.poolweb.com
Example:
PD-110 - Power Defender 1.1 THP Pump 110/240V - 2 Inch - Waterway
This is the Power Defender PD-110 pump by Waterway Plastics with 1.10 THP, 2 inch connections and 110/240 Dual Voltage. The PD-110 is a direct replacement for the Super Pump or SuperFlo pumps and it is one of the quietest pumps in the pool industry. The Power Defender features a durable plastic...
www.poolweb.com
For what it's worth, I've had both sand filters and cartridge filters. At the moment I have cartridges. I intend to go back to sand the next time I have to replace my cartridges. I despise rinsing these things out. I usually end up doing it about three times a season and end up with a backache for a couple of days. I much prefer just performing a backwash on a sand filter, even considering the loss of water involved.
- Apr 10, 2018
- 6,396
- Pool Size
- 18375
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
Another Waterway VS option. Works on 115 volts. Not sure where what your budget is...
www.poolsupplyunlimited.com
Waterway Power Defender 140 Dual Voltage Variable Speed Pump | 115/230V 1.40HP | PD-140
Pool Supply Unlimited has some of the best prices when shopping for Waterway Power Defender 140 Dual Voltage Variable Speed Pump | 115/230V 1.40HP | PD-140
www.poolsupplyunlimited.com