Yesterday I spent the day installing a new Jabsco
Y valve. This item was $100 at West Marine
. This was to replace the 11 year old original which had started seeping.
I assembled the valve easily. The screws were only required to pull the flange down the last 1/16" compressing the O-ring face seal. Everything went together and looked perfecto except it's not.
The new valve leaks
copiously from the face flange. There is an O-ring face seal; it is in place, is not distorted and is lubricated. The face of the Y valve seats fully home against the valve body which should compress the seal.
I've reread the instructions several times. I reassembled the valve three times, rotating the valve body 120 degrees each time. In each instance the handle rotates smoothly covering the entire 120 degrees of rotation.
I assume I have a defective valve right out of the box. I could put a bead of silicone sealer on the O-ring but I'm fairly certain it would foul the function of the valve. And I shouldn't have to.
If you have any experience with these Y valves please chime in. Thank you.