Many people have questions on what size pool pipe they have. You would think that 1-1/2″ pipe or 2″ pipe would measure 1-1/2″ or 2″ but that would be too easy. I thought the easiest tool to help determine your pool pipe size would be a few pictures along with dimensions. I hope this helps!
I have 1 1/2 to 1 1/4 for 10 inches from the pool heater return then goes to 2 inch, is this ok?
Generally, I would like to keep my pool plumbing to at most two sizes. Standard pool plumbing sizes are 1-1/2 and 2 inch. If it is reasonably easy, I would consider switching that 1-1/4″ pipe section in favor of a 1-1/2 inch.
Hey Matthew, thanks for sharing your knowledge and time.
I have 1.5 in ridgid PVC pipes all around. I’m about to install a water heater and salt cell next summer. The skimmer and drain lines that merge and get suctioned to the pump are 1.5 in. respectively. Can I merge the 1.5 inch skimmer line and 1.5 inch drain line into a 2 inch pipe?
Yes, it’s ok to convert the two, 1.5″ main drain and skimmer lines to one 2″ inch line for the pump.
What is the most common diamter for inground pool skimmer inlets? I need to set up a manual vacuum but the hose I purchased is too small for the skimmer inlet and will not stay in place. I need to get an adaptor that will fit the skimmer and the vaccum hose, but is there a standard size for inlets or would I have to measure mine?
It is 1.5″ PVC
I’m moving my pool equipment to different location, about 60 feet away from where it’s currently located. The intake from skimmer and the return lines are 1/12 in pvc. The new 3hp pump has 2in openings, The old pump is only a 1hp pump. Is it ok to run a 1 1/2 in pipe from pool to the new location or upsize them to 2” pipes? Thank you
I am replacing a heater on an above ground 24′ pool with a hayward 150, 1.5hp pump.
It is currently set up with about 9′ of 1 1/2″ going from the filter into the heater,
4′ 1 1/2 going from heater to in-line chlorinator (hayward), and 6′ 1 1/2 going to the pool.
Everything else is also 1 1/2″ piping.
Would it hurt to replace the 9′ pipe from the filter to the heater with 2″?
I feel like the heat exchanger would then be responsible for reducing the flow to some degree, increasing the pressure on it causing it to fail sooner.
…or should I just try it and quit overthinking it…
I’d stop overthinking it.
Hi 4 years new to pools and the pool was here when I bought the house.
I have 2 skimmers plumbed 1.5. they come into a valve and enter the pump in 2″ pipe. from the pump to the filter everything is back to 1.5″ except for the valve to the 2 returns. Am I wrong in thinking that pump to filter at 1.5 and filter to valve at 1.5 is choking off the water flow and or making the pump work harder than it needs to? The filter valve can accept either 1.5 or 2.0.
thanks in advance.
If you are having pressure issues, and it has been a consistent thing you have been battling since tthe pump has been installed or since you had the pool; then there would be a concern. But if your pump and pool run fine, then I wouldn’t worry too much about it.
I have a 1″ 1/2 PVC on my supply side, with a 1.5 HP pump. I have a lot of air in in my plumbing, and I think the motor is burning out. Is this because my pump was too powerful for my plumbing? What HP should I get?
Thansk!
If this is a brand new system, that could be a possibility. if the pump is not new, then you likely have an air leak that needs to be found and fixed. Give this guide and video a look: How to Identify and Correct Air Leaks
What’s more optimal? 1 line from main drain and skimmer? Or 2 separate lines from each, pump is a vs 3 hp, equipment is about 50 feet from pool, pipe size is 2.5″
The standard setup for every pool I have seen is one pipe per port: one line from the skimmer to pump, and a separate line from the main drain to the pump.
Thank you!
Just looking for a second opinion on a more optimal run
New build!!!
Need help for plumbing size and run. Just finished with plumbing phase, not too late to add more runs…
Inground 20×39 / 7′ deep x 3.5′ shallow end / with recessed spa 7×8. Pump is vs 3.0 hp. Plumber has installed 2.5″ pipes with –
#1 line – main drains from pool connected to skimmer than to pump (independent lines best?)
#2 line – main drains from spa to pump
#3 line next to skimmer, intake for vacuum to pump
All 3 lines have diverter valves
Return lines on one 2″ line which is split into 4 locations and downsized to 1″ (2 separate lines better?)
Thank you…
I’m a little confused by your question. Your post says you need help with plumbing, but you said your plumbing phase was done in the next line. Also, you state you have a plumber, have you tried asking them as they are likely an expert and can see the equipment, pipes, and pool? And lastly, is there a reason you would need to add more runs of pipe? Ideally, you want to avoid extra runs of pipe to keep the feet of head as low as possible.
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