- Camp Master 45 litre cooler box with water drain plug - R499 Makro (I bought mine for a bit cheaper when they were on special a while back)
- clear tubing (13mm wide) - most hardware and beer supply stores
- plastic ball valve tap - +-R30 most hardware stores
- two keg bungs - R90 Beerlab
- food safe silicone (very important that this be food safe!!!) - +-R150 Wurth
- plumbing hose (inner tubing removed to leave stainless steel braided cover) - most hardware stores
- cable ties
Firstly we warmed up the tubing that was to go through the drain hole in the cooler, this way it would be slightly easier to slide through the hole/bung combination. Once warmed up and soft, we inserted the the outside bung and pushed the tube through.
With enough "slack" on the inside we slid over the inside bung and ensured to push that one up as far as possible against the cooler.
We then applied a reasonable amount of the food safe silicone to seal it up on the inside and then attached the stainless steel braid which is to act as a filter.
Leaving for the party we decided it would be good to let the silicon set a little before forcing the outside bung closer a little and applying more silicone - which is exactly what we did a couple hours later upon our return.
The entire process took about fifteen to twenty minutes in total which was pretty surprising. The hardest part was actually just sourcing the parts and getting around to eventually building the damned thing!
And that was all she wrote...the next day we decided to give it a quick test so we boiled up the kettle and poured it into the tun along with some cold water (only about five or so litres just to cover the pipes and bungs) to ensure there are no leaks. This silicone needs about 24 hours to properly set and create a solid seal so make sure to build it the weekend before or at least a day or two before your next brew as this is no "build-and-brew" type deal.
Good luck with your project!!!