Outlet Check Valve Back Catalog number: CTS-A11187 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10759 Piston Seal Backup Ring Price on request CTS-21287 Needle Kit, 15 µL with Needle Seat and Needle Guid Price on request CTS-10761 HPMV 1 & 2 Rebuild Kit w/Spool Price on request