Tubing barbed check valves are constructed of chemical-resistant Kynar® body and Viton® valve for an inert high purity smooth and clear flow path. These zero-maintenance valves prevent damage to equipment, pumps, and flow systems by preventing backflow. Use with acids, bases, water, chemical processing, and alcohols. Use for liquids, gases, pressure, and vacuum applications. Operating ranges are 0 to 50 PSI and –40 to 126°C. Valves may be sterilized by autoclave. Unit installs in any position. Available 6 per pack.