Apparatus and process for dispensing incompatible chemicals to a common utilization point

摘要

An apparatus that prevents an undesirable chemical reaction between different liquid chemical streams in a dispenser comprising a dispenser having a common manifold leading to a use locus. The common manifold has a pumping station directed to the common manifold and the pumping station has at least two chemical input lines. The dispenser is controlled by an electromechanical controller that prevents pumping two liquid chemical streams in sequence without an intervening water flush and prevents pumping two liquid chemical streams simultaneously. The liquid inputs to the pumping station are keyed such that the inputs can be connected only to containers that fit the keyed inputs.