Features Turn and Clean Generators that utilizes two types of foaming media to maximize your chemicals performance and consistency. 3/8″ air intake with shut-off valve and a 1/2″ solution intake with built-in check valve to prevent backflow. Extra long foam generators. They can be taken apart for periodic cleaning. Puts out 5GPM @ 40PSI SFTSK Single Side Set Stick Foamers with K-Nozzles