Inlet Check Valve Back Catalog number: CTS-21145 Availability: In the manufacturer's stock Price on request - + Recommended CTS-6809 Mobile Phase Transfer Line, TFE, 3/16" OD x 1/8" I Price on request CTS-A11151 Needle Assembly, PEEK™ Price on request CTS-10788-5 Needle Wash Frit, 5/pk Price on request