Needle Seat Back Catalog number: 11-2570 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-1599 Check Valve Assembly, Outlet Price on request PS7075350 MarvelXACT™ PEEKsil™ 75µm ID x 350mm Price on request CTS-21100 UPLC Check Valve Assy, Spring Loaded Price on request