Inlet Check Valve Back Catalog number: 11-4060 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request CTS-A11184 Lamp Housing Window Assembly Price on request CTS-10988 2690/2695 Performance Maintenance Kit Price on request