Drinking Water tank dripping from drain tap

[JackE]

Hi,

My drinking water tank is dripping from the drain tap. I have replaced the part of the drum tap that is removable but that made no difference. I was wondering if there is any way to replace the drain tap on a tank like this or if anyone has any solutions to try?

[lloydy]

was it just the white head you replaced? Was there some kind of washer with it?

[JackE]

There was no washer, didn't look like there should be one, here is a picture of the part I replaced The part at the bottom just holds the tap in place and stops it unscrewing: