Dorr-Oliver ODS diaphragm pump ball check valve, part number 12A1016804, with a 4-inch connection, is a backflow-prevention component designed for use in Dorr-Oliver ODS diaphragm pump systems. The ball-check design enables unidirectional flow to prevent reverse flow when the pump cycles or shuts down, protecting downstream piping and the pump itself. This replacement valve is specified by the part number for compatibility with Dorr-Oliver ODS assemblies.
