GMS Hot Water Storage Tank Sacrificial Anode

[APJWatts]

Hi all - I need to replace the sacrificial anode on a small apartment block UFH buffer storage tank. Unfortunately there is no documentation for the tank and the manufacturer no longer exists. I am therefore hoping one of you will have come across and worked on a GMS Thermal Products Ltd Model GMS 354, 350litre hot water storage tank and could help with the identification of a replacement sacrificial anode. Thanks in advance for any help.

 

[oz-plumber]

They generally have the same size thread.
3/4" from memory.
It doesn't matter if you get on too long to fit, you can cut it to size.