I'll admit to being a bit of a plumbing novice.
My central heating system has a gate valve which I use to turn the water supply to the radiators on & off. I thought that if I turned it off then I could drain the CH system and replace two radiators.
I drained the system down & removed the radiators.
However, when the missus switched the hot water on for a shower, hot water started coming out of the pipes which feed the radiators.
As I said, I'm not a novice but I'm sure this can't be right.
I want to leave the radiators off for a couple of weeks as I want to plaster behind them and fit new rads. I won't be able to do this if I get hot water shooting out the pipes everytime the hot water comes on.
Can I simply put compression stop ends on the open pipes where I've taken the rads off?
Any help at the moment would be greatly appreciated.