Peggie, shouldn't the joker valve

[Tom M.]

prevent the head from gurgling and spitting back into the bowl?Thanks.Tom M.

 

[Peggie Hall/Head Mistress]

Yep...but--

Something is causing the backflow that the joker valve isn't keeping out of the bowl. So just changing the joker valve doesn't cure the problem, it just keeps you from seeing it. You need to find out what's causing sewage to back up in the line, fix that...AND change the joker valve.

 

[Peggie Hall/Head MIstress]

Amenment to previous reponse...

If there's a vented loop in the head discharge immediately after the toilet, any water in the discharge hose between the toilet and the top of the loop will run back down unless you use "dry bowl" long enough to push it all over the top--and a some may still remain. So if the joker valve is leaking, it will come back into the bowl...but it should only be clean flush water (unless you haven't been flushing enough to rinse the hose out)...you shouldn't feel ANY back pressure when you flush...and it should only seep, it should NOT gurgle and spit. If it does, you have a problem somewhere downstream that needs to be corrected in addition to replacing the joker valve.

 

[Tom M.]

Thanks Peggie, its a new jabsco, no vented loop

I'll do some more checking this weekend.