Check Valve Cartridge, 2/pk Back Catalog number: CTS-10600 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21586 1100 Series Essential Pack, G1310A/G1311A Pump Price on request 11-4152 Tubing D-L Assembly Price on request CTS-5559 Priming Syringe Needle Price on request