Cartridge Check Valve Housing, 2/pk Back Catalog number: CTS-A11431-02 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21192 Cartridge, BioAcquity, I2V Price on request CTS-11080 Alliant Solvent Mgr PM Kit Price on request 11-3602 Tubing, Pump Outlet, GP Price on request