Cartridge Check Valve System Kit Back Catalog number: CTS-21011 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended CTS-11149 Needle Seal O-Ring, 002 Kalrez Price on request 11-3883 Needle Assembly Price on request PS7100150 MarvelXACT™ PEEKsil™ 100µm ID x 150mm Price on request