Cartridge Check Valve Housing, 2/pk Back Catalog number: CTS-A11431-02 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11121-02 Wash Seal, 2/pk Price on request CTS-21169 Assy, Capillary, 90mm x 0.17mm ID, w/Fittings Price on request 11-3889 Needle Seat Assembly, 0.12mm ID Price on request