Description Air operated pinch tube clamp For 5/8 I.D. rubber, silicone or NuPulse milk tubing. Comes with 1/8 in. tube barb and requires 60 psi of air pressure to operate clamp. Replacement for Germania and other brands using air shutoff valves. Note this operates from air pressure NOT vacuum GEA 4999-1010-820 Ezee 21880 03/22