gpm

We’ve had our 40,000 in ground for 4 years now and I have finally stumbled across ‘the answer’ for the most efficient use of our Pentair variable speed pumps. If you google what to set them at there are all sorts of discussions related to RPM; set it high, set it low, run it all day, run in...

Hello all. I need your advice. My pool tech had to replace my back flow valve on the SPA return and to make his job a bit easier, he changed my pipe from going straight down into the ground from diverter valve, into a four 90 degree turns detour. From that moment on my SPA has stoppered...

I have a dual speed pool pump and in order for my hayward heater to work the pump needs to be on high speed. The low speed does not have enough GPM going through and the heater won't turn on. Is it the same with a SWG? Does it take a certain amount of pressure to generate chlorine from the salt...

I have a Pentair VSF pump. When we first opened the pool, I wrote down the flow rate at various speeds. We have a manual heater bypass valve to isolate flow away from the heater when not in use. Other than a dirty cartridge filter (which I've already cleaned in hopes of resolving this - no...

I have a Hayward S180T sand filter. Is the design flow rate the maximum? I have a Hayward W3SP1580 Power Flo Pool Pump that was suggested to me by someone at a pool store. This pump is a 60 gpm pump. If the designed flow rate listed as 34 gpm does this make it dangerous. I have it connected by...

Hello. When we bought our house there was an above ground pool. It is a 24 foot round above ground pool. We used the equipment that was left. Last week our pump broke. It is so weathered that you cannot read anything on it. The guy at the store recommended I buy a Hayward W3SP1580 Power Flo Pool...

Hi, TFP. Please help me set my flow rate on a schedule that will keep my energy bill down and my water clean. A few pertinent details: I have solar panels on my home My time of use pricing with PG&E means 4-9pm is "peak pricing" I have a spa spillover feature, but nothing else My pool filter...

I had posted earlier about chasm between the theory and practice in pool plumbing (especially when it comes to finding 2.5" compatible equipment). So, I conducted little non-scientific science experiment with different pipe sizes/length and their impact on flows. Hopefully, this will help others...

Hi TFP community: I am a rookie to this site and pool building in general. I told my wife for 10 years we’d get a pool and was able to delay it until now. My kids are now 8 and 10, and now it seems I am out-voted 3-1 in my household; The family wants a pool for the hot Phoenix summers; I can't...

I just replaced my old single speed pump with a Hayward TriStar 1.85HP VS pump. I have 1.5" plumbing. How can I calculate the flow rate GPM at XX RPM with this pump and this plumbing size? My goal is to use this information to schedule my different speeds and intervals to move the 13k...

Hi Everyone, I'm new to TFP and to pool ownership. We purchased a home with an 30k gallon IG gunite pool 2 years ago (this is our third summer). Here is a quick run down of the first issue I want to tackle with this pool: Year 1 We swapped out the old pump for a VS-SVRS pump and had no issues...