How to vent the hot water?

[Andymgc]

The pipework out of the top of the hot cylinder travels develops an air lock each night after the emersion heater has done its stuff.

If i run the hot tap for a while it does get flushed out but there must be a better way of doing this.

I was thinking of venting the high point of the hot water system into the cold tank. If i do this though is there a one way valve available to stop cold water entering the hot water pipe work.

I need to sort this out because my gravity fed shower mixer on the bath doesn't work properly until the air has been flushed out every morning.

Any bright ideas?

 

[Andymgc]

I've just realised the high point should be vented into the top of the cold water tank. Problem solved.