A keg coupler is a key of any draft beer system. It's a small but vital piece of equipment that connects the gas and beer lines to your keg. Pressurized gas (either carbon dioxide or nitrogen depending on the type of beer being dispensed) flows into the side of the keg coupler through an air line and the beer flows out through a beer line attached to the top. You can keep those kegs flowing free with the D System Beer Tap Coupler 304 Stainless Steel Probe and its smooth, reliable operation. This tap coupler securely mounts with a to dispense beer in seconds. To ensure the purity of flavor and drink, only 304-grade Stainless Steel probe comes in contact with the beverage. Features: 1. This is a sankey keg coupler and fits "D" System Sankey keg valves and will be compatible with almost any beer brewed in North America. 2. Constructed from 304-grade stainless steel probe with brass body, this tap coupler is made to last through years of use and abuse while maintaining purity of product. 3. The Locking handle does a good job of keeping the coupler locked into place even if it gets bumped. 4. Great product to replace old tap that was leaking and hard to get on. No leaks and easy on and off. To tap a keg all you have to do is pull out and then down on the lever-handle to properly couple the keg. 5. 50PSI Pressure Relief Valve. An internal safety relief device prevents dangerous pressure build-up that can damage your system. Specification: Condition: 100% Brand New Item Type: Beer Dispenser Material: Stainless Steel + Copper Color: Silver Size: Approx. 17.5*12.5cm / 6.9*4.9inch Package list: 1 x Beer Dispenser 6 x Fittings