Inlet Check Valve Cartridge Back Catalog number: CTS-0621 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21171 Rotor Seal, H-Assy, 6 Port 2-Position Price on request CTS-11380 2690/2695 Performance Maintenance Kit w/Seal Pack Price on request 11-2587 Piston Seal Wash Seal/Priming Valve Seal Price on request