Ask a Tradesman
Plumbing Question
Drained cold water tank to fix tap, tank now filled but no water flowing
5 Answers
You probably have an air lock.
Answered 18th Jun 2011
you have an air lock in the system that needs to be flushed though
Answered 18th Jun 2011
it is air locked try running hose from main to tap and open up it will push air out and the water will flow
Answered 18th Jun 2011
air lock
Answered 20th Jun 2011
Definitely an air lock, pushing mains pressure through the pipe will release it. There are a few other techniques you can use, but mains flushing is the most straight forward.
Answered 22nd Jun 2011