Check Valve Cartridge, 2/pk Back Catalog number: CTS-10600 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11315 Needle Seal, PEEK™ SIL-20 Price on request 11-3832 Wash Seal, PE, 1220, 1260, 1290 Price on request CTS-A11372 Tube Assy, Transducer to Check Valve, I2V Price on request