Cartridge Check Valve Housing, 2/pk Back Catalog number: CTS-A11431-02 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21095 Seal Wash (0.0787 ID, Fixed, Bio), 2/pk Price on request CTS-11092 O-Ring, PTFE Price on request PL7050600 MarvelXACT PLS 50µm x 600mm Price on request