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valves?

i have replaced some valves on my radiators, however they seem to be dripping slowly. i have tried tightening them slightly but the drip keeps returning
david rhodick, March 2010
drian the system again, lossen the nuts rap some PTFE tap around the rings and refitt should do the trick.

erj, March 2010
have you over tightened them ?
did you use tha same olive/nut ?

can be many factures
but i would say you've crushed the olive.

hi-spec plumbing & heating (essex), March 2010