Discuss Drain off cock washer in the Plumbing Jobs | The Job-board area at PlumbersForums.net

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Hi,

Has anyone seen a drain off washer like this?
94E40418-2188-4489-9C3B-B8EAF85FC44C.jpeg
Which has come out of this drain off cock:

BBD07D85-9B6F-4C59-8285-886D714C9F3B.jpeg

I’ve changed it for a normal flat washer but the valves still leaking slightly.

Any help or advice would be much appreciated.

Thanks
 
It looks like the right washer , its just been overtightened .
Where did you buy the replacement washer ?
 
You need to clean the valve face where the washer seals against.
If the previous one has been leaking for a while the seat may be badly pitted and the only option then would be to replace the complete D.o.c.
 
Thanks for all the advise. It’s sorted now.

I still can’t work out what the washer is in my original post, it’s a cross between a dome and a flat washer. I’ve never seen one before.
 
Not really. Parts centre where I am call the washers that go inside drain offs MT washers
I suspected you meant MT= empty=draw-off cock washer, but I wondered if you meant, are you sure you want to use a DOC washer mate? Or if MT meant something else. But fine, I get what you meant now, thank you.
 

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