Some of the links on this forum allow SMF, at no cost to you, to earn a small commission when you click through and make a purchase. Let me know if you have any questions about this.
Looks like the top is threaded to attach a garden hose and then you open the valve on the side to let the water in and then close the valve when you've added enough. Then during the long smokes you just open the valve again to add water as it evaporates. Does Franklin use water smokers? Maybe that's his secret!