New Honeywell 3-Way Valve Leaking

13 Mar 2010
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United Kingdom
I've just replaced the ball valve plate on my Honeywell 3-way & the shaft is leaking. Any ideas other than a faulty plate?

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Brave of you to just change the plate. Most engineers would change the complete valve to be able to give a warranty and peace of mind. Did the plate come with a new ball and spindle? If you used the old one then it may well be the O-ring that has perished or damaged on removal. Best. Ernesto
Yes, new ball & o-ring but the ball & shaft sits inside the o-ring. So if that was damaged or unseated, the leak would be between the plates. This is actually flowing out of the plate where the motor shaft exits.

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For what it's worth it was a faulty plate. Replacement fitted & all good.

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