- Build and durability The keg coupler has a chrome-plated brass body and a stainless steel probe with a sturdier lever handle. The design follows ergonomic standards to reduce wear and help retain beer flavor during long-term use. - Sealing and safety The pressure relief valve automatically opens at about 55 psi to vent excess pressure before it reaches the keg. Silicone check valves and beer line washers between the coupler and the barb tailpiece provide reliable sealing to prevent leaks and backflow. - Complete kit included Standard G 5/8 inch thread for ball lock fitting. This S coupler comes with all necessary parts, including beer and gas barb tailpieces to fit 5/16 inch ID draft beer line tubing. A 2-tailpiece set and hose clamps are included so you do not need to purchase them separately. - Compatibility and use Compatible with all European S system Sankey kegs, making it suitable for a variety of carbonated drinks. Built for heavy use in high-demand environments such as bars, restaurants, and breweries. - Easy maintenance and reliability Designed for durability in professional settings, with components chosen to minimize wear and preserve beverage quality over time. - Warranty and support One year warranty. Professional customer service will address any issues within 12 hours. Contact via Amazon for full support and service. - Practical use scenarios - Home draft setup: connect to a home kegerator to serve beer from Sankey kegs with reliable sealing and easy operation. - Small bar or cafe: handles frequent use with durable construction and quick maintenance. - Catering or mobile service: suitable for events and temporary installations where quick setup and dependable performance are required.