Leaking help

[Hp116]

Hi, I’m new around here but I was just wondering if anyone would be able to give some advice. The black part in the picture is leaking and I was wondering if anyone knew what the exact name of this part was and if it would be possible to replace myself? I have replaced the motorised valves in the past with the help of you tube videos. I was just wondering if this would be possible to do myself too....

 

[bobasd]

dont mess with it - get a plumber on site

 

[oldbuffer]

No, you can't do it yourself. Its the combination valve for an unvented hot water system, and as such requires a plumber with a G3 qualification to work on it.