The thread in the barrel is fine so I just need a replacement tap, the outside diameter of the thread is roughly 10mm so I presume this is 1/8″ BSP as you have said, I’ve managed to find this – https://www.completeautomobilist.com/products/338-straight-drain-tap-1, does this look correct ? or can you suggest an alternate source ?
Also any suggestions of where to source a set of gaskets/seals ?
Thanks again – Russell
