What pipe is this weaping?

[Andyjp1]

Hi all, I’ve discovered a weaping joint and was hoping somebody could tell me which pipe in particular it is?
I don’t want to start loosening / taping it without knowing what it is first. (One with black tap)

It’s for a vogue c26.

Thanks in advance.

 

[Scott_D]

It’s the hot water outlet

 

[Gasmk1]

If it’s the black taps larger bore 22mm then it’s either heating flow or return smaller pipes 15 mm one with tap or Verdigris encrusted one without tap then that is cold water inlet then hot water outlet

 

[Andyjp1]

If it’s the black taps larger bore 22mm then it’s either heating flow or return smaller pipes 15 mm one with tap or Verdigris encrusted one without tap then that is cold water inlet then hot water outlet

Thanks for the reply, its the 22MM one with the black tap in question which is the issue... I need to loosen it, add some PTFE and re-tighten - I assume if i turn the black tap it will prevent water gushing out?