New Pump X2 Leaking At Pump Output Adapters

[LGLDSR73]

Greetings,

I have had a Hayward SP-1580 1HP pump for several years and it was time to replace it. Not a big deal. I went to the pool store (ugh) and purchased another SP1580. As you can see in the attached photograph it leaked like crazy at the output to the Sand Filter. I tried multiple hose adaptors including the one from the old pump as well as a new one from Hayward and elsewhere. As with the original pump, tape was used on the adapters and wound clockwise. It never leaked.

Given the multiple adapters the only thing I could figure was that the outlet on the pump had not been milled flat, hence the leak. I bought a second SP-1580 pump from Hayward.

Fired it up tonight and it's leaking worse than the first pump I purchased to replace the original. At this point about all I can come up with is an inert sealant such as GE Silicone-II Tub and Bath or similar product to seal that area. But, is it in fact inert? I don't want to be putting any residual God-knows-what into the water. I've got Grandkids swimming in there.

Any thoughts, input, really appreciated.

Thanks All,

Lyman

 

[cowboycasey]

Get you one of these, it is a high temp union and it has an o-ring on it to seal it..

Not sure if your pump is 1.5 or 2 inch and your pipe is it 1.5 or 2 inch...

Amazon.com : 1.5 inch high temp union

 

[LGLDSR73]

Get you one of these, it is a high temp union and it has an o-ring on it to seal it..

Not sure if your pump is 1.5 or 2 inch and your pipe is it 1.5 or 2 inch...

Amazon.com : 1.5 inch high temp union

Thank you! Pipe is 1.5". There are several at that link, which one are you referring to?

Again, thanks!
Lyman

 

[cowboycasey]

This one is 1.5 inch for both and would work perfect.. Make sure the pump is also 1.5 inch.. Mine have been leak free for 9 years now on both my pump, skimmer and pool returns and suction vacuum..

Amazon.com: RWParts 2 Pack - 1.5" MPTX1.5 S HI-Temp Union W/ORING - 2 Pack : Patio, Lawn & Garden

Amazon.com: RWParts 2 Pack - 1.5" MPTX1.5 S HI-Temp Union W/ORING - 2 Pack : Patio, Lawn & Garden

smile.amazon.com

 

[LGLDSR73]

This one is 1.5 inch for both and would work perfect.. Make sure the pump is also 1.5 inch.. Mine have been leak free for 9 years now on both my pump, skimmer and pool returns and suction vacuum..

Amazon.com: RWParts 2 Pack - 1.5" MPTX1.5 S HI-Temp Union W/ORING - 2 Pack : Patio, Lawn & Garden

Amazon.com: RWParts 2 Pack - 1.5" MPTX1.5 S HI-Temp Union W/ORING - 2 Pack : Patio, Lawn & Garden

smile.amazon.com

Thanks for the speedy reply!
Best,
Lyman

 

[LGLDSR73]

This one is 1.5 inch for both and would work perfect.. Make sure the pump is also 1.5 inch.. Mine have been leak free for 9 years now on both my pump, skimmer and pool returns and suction vacuum..

Amazon.com: RWParts 2 Pack - 1.5" MPTX1.5 S HI-Temp Union W/ORING - 2 Pack : Patio, Lawn & Garden

Amazon.com: RWParts 2 Pack - 1.5" MPTX1.5 S HI-Temp Union W/ORING - 2 Pack : Patio, Lawn & Garden

smile.amazon.com

Hi,
I don't think that's going to work with the way the output is connected from the pump output to the Sandfilter. Thoughts?
Best,
Lyman

 

[cowboycasey]

You need the same exact piece that is on the other suction side... We need to know if the threads are on the outside or inside coming out of the pump...

Give inyo a call and they can get the correct slip unions for your pump INYO Pools Customer Support - INYOPools.com

 

[LGLDSR73]

Threads are on the inside. Will call them, thanks again!
Best,
Lyman

 

[sktn77a]

Have you true using white PVC pipe dope? I've used this for years and never had a leak (unlike teflon-taped joints).

https://www.grainger.com/product/4YRW5?ef_id=Cj0KCQjwzYGGBhCTARIsAHdMTQxrwwpHDv0AN4bqcr4rHM8vGqnp1b7AF-LXo8yJKsLT22S8Xmad0KwaAoVuEALw_wcB:G:s&s_kwcid=AL!2966!3!264955915646!!!g!439197685156!&gucid=N:N:PS:Paid:GGL:CSM-2295:4P7A1P:20501231&gclid=Cj0KCQjwzYGGBhCTARIsAHdMTQxrwwpHDv0AN4bqcr4rHM8vGqnp1b7AF-LXo8yJKsLT22S8Xmad0KwaAoVuEALw_wcB&gclsrc=aw.ds

 

[LGLDSR73]

Have you true using white PVC pipe dope? I've used this for years and never had a leak (unlike teflon-taped joints).

https://www.grainger.com/product/4Y...o8yJKsLT22S8Xmad0KwaAoVuEALw_wcB&gclsrc=aw.ds

Thanks! Hayward warns against it, saying it'll ultimately cause cracking. That said, they do not specifically mention White PVC Dope, only "Pipe Dope". Is there a difference?

Again, many thanks!
Best,
Lyman

 

[cowboycasey]

it will be fine, I use it on all my screw on fittings..

 

[LGLDSR73]

Thank you!
Best,
Lyman