Qosina offers an extensive line of Check Valves, available in a variety of styles that are in stock and ready for immediate delivery. Made of MABS and silicone, Qosina part #80067 features a 0.124 inch OD tubing port inlet and a male luer lock outlet. This in-line valve has a low, 0.143 psi cracking pressure which determines when the component starts to open. Qosina offers a variety of flow rates, materials, cracking pressure and back pressure options. Check Valve sample kits are also available which are ideal for testing.