Boiler/hot water tank

[Simone]

Hi, had water slowly dripping out of this top pipe which goes from boiler to hot water tank, (top one in the picture)does this union just need tightening or is it a bit more serious than that, just had the hot water tank heat up and this top pipe has stopped dripping probably due to it heating up, any ideas.? Thanks

 

[Chalked]

Hi
It's an old safety valve. Please don't try to tighten it up, that may make it leak more!
TBH it needs replacing with a newer better one.

 

[Simone]

Hi, thanks, if I were to replace it like for like would it be an easy job.??

 

[ShaunCorbs]

You would have to drain the system but should be a straight swap (the whole valve)