Tube Assy, BSM Outlet to SM Back Catalog number: CTS-21075 Availability: In the manufacturer's stock Price on request - + Recommended 11-2401 Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Price on request CTS-10396 Washer Thermo/Dionex™ Model: P1000, P2000, P4000 Price on request CTS-10476 Sapphire Plunger, Alliance Price on request