dead cheap CWST drain down bung

[dean.diy]

My white plastic bung was too big (15mm). Looked in the van , found unused silicone nozzle. The blanked off nozzle type , tapering out, with collar around base. Fitted the tank connector hole a treat. Wont go soggy like the carrot.

 

[Ollieg]

I had to bung some 35mm from a CWST and my Regin bung started to disappear down the pipe. Took it out (eventually) and stuck a 22mm cap into the hole in the back of the bung and it was all good.