Inlet Check Valve Back Catalog number: CTS-A159 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11335 ACQUITY H-Class QSM Performance Maintenance Kit Price on request CTS-21566 PM Kit, Seal Wash for Binary Pump G4204A Price on request CTS-10324S Seal Pack w/Needle Price on request