I need to replace the washer inside a drain off cock on a downstairs rad. Do I need to drain the whole system to do this? Thanks.
Drain off cock
- Thread starter Sportpaddy
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- 2 Oct 2010
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Yes, but you could 'bung' the f & e.
Mr. W.
Mr. W.
Just drain it, it'll be cheaper if you've got a primatic. 
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