New pump and the fittings leak

[phillijp]

I just replaced my pump and the fitting on the top of the pump leaks. I searched the forum and see that Teflon tape is not the way to go. In one thread I read about a blue, aerosol based product but couldn't find a name for this product. I also read that some people use Permatex #2 to seal the threads.

What is the name of the blue sealant?

Thanks

 

[jblizzle]

I don't want to use Permatex #2 ... you want to you teflon thread sealant.
Do you have the option to use union fittings directly to your pump? Which pump do you have?

 

[duraleigh]

If you are talking about where the pvc pipe fits into the iron volute, a generous coating of pipe dope (teflon thread sealant) on both surfaces works fine. Not too tight....maybe 1/4 turn past hand tight or so.

 

[kadavis]

Blue 75 made by Spears Manufacturing

 

[sktn77a]

You should be able to make a good seal with teflon tape. I suspect something else is in play (misaligned plumbing, bad fitting thread, bad pump thread, etc). Pictures?

 

[phillijp]

The fittings aren't cross threaded but the pump is making 19 psi versus about 10 with the old pump. When I installed this pump I added unions to both sides so that I can put the pump in the garage during the off season. I also had to step down the pump fro 2" to 1.5" and it's this bushing that won't stop leaking even with liberal application of Teflon tape.

i can't find the specific thread I'm referencing but many of the responses said to avoid Teflon tape and use permatex or the blue stuff instead.

 

[jblizzle]

What pump did you have and what do you have now?
If the pressure is higher (with the same clean filter), then you put a larger pump in with higher flow rates and higher electrical usage.