Check Valve, Secondary Inlet Back Catalog number: 11-1600 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-4152 Tubing D-L Assembly Price on request CTS-7550 Performance Autosampler Needle Price on request 11-2525 1/4" Short Comp. Screw (Gold-Plated), 10/pk Price on request