Gold Plunger Seal Back Catalog number: 11-4133 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended 11-2401 Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Price on request CTS-21171 Rotor Seal, H-Assy, 6 Port 2-Position Price on request CTS-A11431-02 Cartridge Check Valve Housing, 2/pk Price on request