Tightening transition coupling

Old 06-08-18, 03:34 PM
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Tightening transition coupling

My cold water sink valve had two 3/8 outputs, and I just connected a 1/4 freezer line to it using a transition coupling and then the 1/4 pipe compression fitting.

Its dripping a bit at the 3/8 threads.

Should I loosen the 1/4 before tightening the 3/8 or just tighten the 3/8 first and then the 1/4? Does it matter?
Old 06-08-18, 04:09 PM
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You probably have to completely disconnect it and start over. The 3/8" threads need pipe dope because your transition coupling has no compression ring or gasket of it's own.

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