Sewage Pump Question

[Surface Tension]

So I went and looked at mine and I was wrong about the check valve, mine is horizontal. Must have been the suggested way to install(yes I read instructions sometimes ) because there was no reason for me not to and as said I hear my check valve clunk so I know its working. I'd take a picture but I'd have to move the washer out of the way and clean all the dust off everything.

Only difference between mine and yours is mime is a different type check valve and distances from elbows to tank. You'd flip flop and thats what I have. Can't tell from your pic but I have 2" pvc and I'm pushing (not lifting) 10' and know that it could push a lot more then that by the sound of the volume and pressure.

How far is that vent going in to the tank? If its under water I can see a problem. Also there is no need to replace the discharge, just drill another hole.

[TKO_PUNCH]

The vent is actually screwed to the top of the cap using Teflon tape for the sealant on the 2" male threads. The street elbow is cement to the female side of the adapter and you can see from there on. So I know it is way above the water line.

I haven't had any problems since this post started. I think the next time I have vapor lock, I will drill another small hole above the water line where the float turns the pump on.

Thanks for all the input.

[Tom7227]

Thanks for all the input.

Isn't the input what started all this - or was it the output? I can't figure it out but I'm sure some PVC sealer will solve it!!!!!!!!!!

[TKO_PUNCH]

Well, it happened twice in a row now. Last night when the wife showered and this morning when I showered. All I needed to do is loosen the clamp on the coupling and then the water is pumped out fine. This gets rid of the vapor lock at the time.

Tonight I will drill another small hole above the water line where the switch turns the pump on to see if that fixes this problem.

[hotrod1]

are u sure the vent isn't pluged up or frozen? try cutting the vent apart above the basket temporarly to see if it still gets vapor locked.

[Surface Tension]

All I can think of is.

The vent is plugged and you have negative pressure in the tank.

Next time it happens loosen the coupler on the vent. If it works there is your answer.

If that doesn't work then try drilling that hole on the discharge up higher.

[TKO_PUNCH]

It was not the vent. I had it happen again last night, so with is still vapor locked I opened the vent coupling. It never relieved any pressure. Once I opened the discharge coupling, it relieved the pressure and worked properly.

This morning I drilled a small hole just above the water line. Everything is working just fine so far. I has been through at least 20 cycles with no vapor lock.

Thanks for all the help and hopefully this problem has been solved. I'm still not sure what caused this problem though.