Cartridge Check Valve Housing, 2/pk Back Catalog number: CTS-A11431-02 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-6809 Mobile Phase Transfer Line, TFE, 3/16" OD x 1/8" I Price on request CTS-10711 Alliance Head Plunger Seal Kit, Black, 2/pk Price on request CTS-11434 Sapphire Plunger Price on request