Check Valve Cartridge, 2/pk Back Catalog number: CTS-A094 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-5656 Sapphire Plunger Price on request CTS-21085 Rotor Seal, 6 port, -COH Price on request PL7025150 MarvelXACT™ PLS 25µm x 150mm Price on request