Milehightrader's Small Coleman Cooler Conversion For Mini Mash Cooler
The small Coleman cooler did not have a factory valve, so I drilled a 1/2" hole in one end. The stainless braid is a standard stainless steel braided water supply line. I used the tubing I removed from the supply line and forced it through the 1/2" hole. I used DAP Kitchen and Bath Silicone Sealant around the tubing on both sides. The valve is a 3/8" plastic ball valve inserted in tubing outlet.

Parts List:
1 - 12" Stainless braid supply line
Tubing (Used leftover supply line tubing)
1 - 3/8" Plastic ball valve (Northern Brewer)
1 - Stailess steel worm clamp (Braid to tubing) DAP Kitchen and Bath Silicone Sealant (White)