Needle Seat Back Catalog number: 11-2570 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-A11431-02 Cartridge Check Valve Housing, 2/pk Price on request CTS-21106 Seal Wash PM Kit Price on request 11-3832 Wash Seal, PE, 1220, 1260, 1290 Price on request