Sanke D couplers are the most common coupler for commercial American kegs.
D-Type keg coupler for standard American sanke kegs
The most popular keg coupler in the USA. Commercial D-Style sanke beer tap, also called a coupler, has a lock down mechanism that gives a solid click when engaged. Heavy duty construction is designed to withstand commercial usage. Beer is dispensed out of the top port, the side port is for gas. Nickel coated body with stainless steel probe