Premium Stainless Steel Milk Transport Can with Airtight Lid & Optional Spigot - 2.6 Gallon (10L) Food-Grade Container for Dairy, Juice, or Bulk Liquid Storage - Perfect for Farms, Restaurants, and Commercial Kitchens

I used this as a water bottle that I can fill with ice and water for off road use. I drilled a hole in the top for a relief valve because the can is airtight when sealed and will not freely flow if the lid is latched. Unlatching could allow dust and dirt to enter. A simple cure was to put the relief valve in it and press it to allow air to move inside, (making sure there is no dirt around the valve) while water freely flows out the spigot at the bottom. Relief valve and adapters all found on Amazon. (1/8 NPT fittings, also bought a tap for NPT to thread the hole, however, simply putting another fitting on the other side works as well, to cinch the valve to the top.) I also added the extension adapter to get the intake for the valve up and away from the surface.