Sapphire Plunger Back Catalog number: CTS-11425 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11141 ACQUITY SM Performance Maintenance Kit, 700005236 Price on request CTS-0620 Outlet Check Valve Cartridge Price on request CTS-21463 Check Valve Cartridge, Ceramic, 2/pk Price on request