Problem with Gen x pump pipe threads

[ezhoops]

trying to hook up my gen x 55 to my MRC-2 skimmer and the riser or outlet on the gen x pump will not stop leaking. Its a Female pipe thread connection. I have the FPT connected to a 1" true union. I've tried tape, white paste and everything has leaked. I am getting really frustrated. Tomorrow I plan to use the slow set TFE paste.

any other suggestions.

I think the problem is that the pump threads are plastic and the the pipe is PVC, I'm guessing though

 

[samsfishnchips]

"I think the problem is that the pump threads are plastic and the the pipe is PVC, I'm guessing though"

no thats not the problem,

can you take a pic?

and hope you are not trying to hook this skimmer with just hard pvc...

sam

 

[jdieck]

Also check that the pump housing has not cracked around the threaded area as overtightening can easily do it. remember that the threads are conical (tapered) and the more we tighten the more the male fitting try to expand the female fitting.

 

[ezhoops]

and hope you are not trying to hook this skimmer with just hard pvc...

No, not exactly. I have limited space so my plumbing is a little unusual but I have from the pump a FPT adapter, 2 45's and then about a 2.5' piece of spa flex and then it connects to a coupler to the beckett intake.

pics will come soon

 

[Aquaduck]

Those pumps use an O ring to seal the fittings. Look at the hose adapters that came with the pump, you will see an O ring on them. It's there for the reason that if you try and use too much teflon tape and force to tighten the fittings the pump housing will crack. I know this from experience. I ended up permanently glueing the fittings in place using PVC transition cement.

 

[ezhoops]

I got NO O rings with my pump or hose adapters.

 

[Jayson]

use some aquarium silicon on the threads of the pump. Screw your fitting on the pump and let dry for a few hours.

 

[jdieck]

<a href=showthread.php?s=&postid=6924529#post6924529 target=_blank>Originally posted</a> by Jayson
use some aquarium silicon on the threads of the pump. Screw your fitting on the pump and let dry for a few hours.

Good advice but I think it will be better to apply the silicon to the fitting threads rather than the pump threads if the pump is female. This way while screwing in the fitting, the excess silicone is left out rather than being pushed into the inside of the pump where it might restrict the flow or get into the impeller and volute areas. If you wish in addition to the fitting you can also use a small amount of silicon only on the first two or three threads on the pump side.

 

[Jayson]

pump is male threads fittings are female thread.

 

[jdieck]

<a href=showthread.php?s=&postid=6925283#post6925283 target=_blank>Originally posted</a> by Jayson
pump is male threads fittings are female thread.

Sorry, I got confused by the statment in the first post:
...outlet on the gen x pump will not stop leaking. Its a Female pipe thread connection.