Anti-siphon loop

[boating2go]

I just installed an anti-siphon loop between the pump and bowl on my Jabsco electric toilet. However the bowl is still filling with water. The loop is above the water line. Anyone have an idea why this is happening.

[onestepcsy37]

i guess i would check the anti-siphon valve - the little rubber thingy that looks like a joker valve - to make sure it's facing the right direction and that it works.

also, sometimes it has to be mounted WAY above the waterline.

[sailorchic34]

Fresh or salt water flush? If its fresh the fresh water solenoid valve is leaking. If salt, Could be the vent on the loop is clogged, or maybe coming back from the downstream on the discharge side....

[Tynesider]

Originally Posted by boating2go

I just installed an anti-siphon loop between the pump and bowl on my Jabsco electric toilet. However the bowl is still filling with water. The loop is above the water line. Anyone have an idea why this is happening.

Not sure if this helps but this is mine on a Jabsco manual system, sea level is about level with the toilet lid.

Assuming you have the pipes connected correctly check the vent caps, also are you sure the position of your sea cocks are correct for open/close.

The black pipe is to a bilge pump

[Stu Jackson]

When did you last check your joker valve? Is it fresh/salt water or holding tank stuff, is your outlet thru hull open?

[boating2go]

Stu,

I had replaced the joker valve but after reading your post I thought maybe the new valve was bad. I put in another new valve and it solved the problem. Thanks for making me think!