Outlet Check Valve Back Catalog number: CTS-A157 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21164 Rotor Seal, 6 port, Rear Price on request CTS-11313 PEEK™ Rotor, LPV Price on request CTS-21240 ACQUITY I-Class SM-FTN Performance Maint. Kit,2890 Price on request