Qosina offers an extensive line of Check Valves available in a variety of styles that are in stock and ready for immediate delivery. Qosina part # 91014 is a high flow valve that provides low flow resistance, a low 0.052 psi opening pressure, and a positive seal against backflow. Made of acrylic and silicone, this valve is barbed, eliminating the need for bonding. The inlet fits 3/16 inch ID tubing and the outlet fits 1/4 inch ID tubing. Check Valve sample kits are also available which are ideal for testing.