You can trust that Tru-Flow sanitary valves are FDA, USDA, and 3A compliant with features designed for superior performance. Stem automatically adjusts seal compression to compensate for wear, pressure,and temperature. Double O-rings provide additional defense against leaking through the stem and also lowers the operating torque. Fully-encapsulated PTFE cavity filler eliminates product entrapping voids. Internals and end caps are highly polished to 8-12 Ra finish with all the components being full traceable. Air to open - spring to close aluminum rack & pinion actuator. 316SS body with clamp connections. Valves rated to 1000 psi and -50 to 400°F. Fractional sizes, other connections and automation available.