The Micro Matic 4" Sanke 'A' System Party Pump is the professional solution for serving German and specialty import kegs (such as Spaten, Warsteiner, and Paulaner). This heavy-duty manual pump features a high-flow 4" cylinder and a durable 'A' System coupler. It includes a specialized integrated pressure relief valve, which prevents the keg from being over-pressurized during manual pumping. Engineered for simplicity and reliability, it provides a smooth, consistent pour for festivals, tailgates, and home events.