Outlet Check Valve Back Catalog number: CTS-A157 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-4052 Needle Seal, SIL-30AC, SIL-30ACMP Price on request CTS-10984 Sparge Diffuser Price on request PL7050150 MarvelXACT PLS 50µm x 150mm Price on request