reduce water flow for solar?

zippyjhawk

Member
Mar 17, 2010
12
Kansas
Hi,
My 1 HP pump is blowing the connections off of my 3-way valve when trying to hook up the solar. Even when I have the solar blocked off, that is the connection that blows. I tried it half open and it still didn't hold. I am using flex hoses (I know not the best) and clamps on the connections. Do I need to reduce the water pressure somehow before it goes to the solar? My filter was about 18 psi before attempting the solar hook-up. I'll go out and take a picture, though I am ashamed of my meager plumbing attempts after seeing all the professionals here! We are about ready to say "forget it" with the solar - it's been plenty hot already and we might not need it until fall at this point.
Thanks!
 

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zippyjhawk

Member
Mar 17, 2010
12
Kansas
OK, from reading on here, I have figured out that I need to switch my connections so that it goes in the solar at the bottom and out at the top. Other than that, is my pump too big?
 

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,880
Silver Spring, MD
That style of hose connection can be finicky to get right. Your pump will be putting a little more stress on the hose clamps then they usually get, so a slightly imperfect connection will fail. Once you can get everything connected correctly, everything should be fine.
 

lbridges

LifeTime Supporter
Nov 12, 2009
323
Indialantic, FL
Your plumbing confuses me. It appears that a black flex line comes out of the filter to a 3-way valve. I presume the black flex line coming out of the 3-way goes to the Pool? The white flex coming out the other side of the 3-way then seems to go both (through a "T") to the solar panel and to what I think is the Intex SWG. Where does the output of the solar panel and SWG go?

In a traditional solar install the flow goes: pump - filter - solar - SWG - pool. If the solar or SWG can't handle the flow there is a bypass loop employed.
 

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,880
Silver Spring, MD
The black hose from the filter is the water supply. Black from the 3 way valve feeds the solar panels. White is the return to the pool, which goes through an Intex SWG on the way to the pool. Because there isn't a check valve, the solar panels are pressurized any time the pump is running even when they are turned off.
 

zippyjhawk

Member
Mar 17, 2010
12
Kansas
That is correct. So it is going pump - filter - solar - SWG - pool, unless the solar is bypassed. I'm guessing a check valve is going to need to wait until I go all PVC.

In one posting I read that the clamps will hold a little better if the PVC is "roughed up" a little bit with some sandpaper. Do you think it would help?
 

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