Check Valve Assembly, Outlet Back Catalog number: 11-1599 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-3332 100μL Syringe for WPS-3000 Series Price on request CTS-10394 Pump Seal, Black Price on request CTS-10285 TFE 3-Way Valve 4 (V4) Price on request