A chemical dispenser for a chemical dispensing system is disclosed. The chemical dispenser includes an input selector valve having an opened position and a closed position and configured to be coupled to a diluent source, a diverter valve coupled to the input selector valve, and a plurality of eductors coupled to the diverter valve. The diverter valve includes a valve head having a diluent port, a valve seat having a plurality of eductor ports, wherein each eductor port is in communication with a respective one of the plurality of eductors, and a drive mechanism coupled to the valve head and configured to move the valve head relative to the valve seat. The valve head may include one or more pressure relief ports for equalizing the diluent pressure across the valve head. A chemical dispensing system including the chemical dispenser and a method of using the chemical dispenser are also disclosed.

Systems, methods, and software program products for dispensing chemical solutions. A controller receives a signal from a pressure sensor indicative of a pressure of a diluent. The controller determines an expected flow rate of the diluent through an eductor based at least in part on the pressure of the diluent. The controller may further determine an expected concentration of a chemical product in the solution dispensed from a discharge port of the eductor. Based on the expected flow rated and concentration of the chemical product, the controller determines a duration of a dispense stage of a dispensing operation required to dispense a predetermined dose of the chemical product. The controller then causes the diluent to flow through the eductor for the determined duration of the dispense stage. A check valve on the output of the eductor prevents dissimilar chemicals from mixing and reduces a response time of the eductor.

A fine bubble generator disclosed herein may include a body casing including an inlet and an outlet and a first fine bubble generation portion housed in the body casing and disposed between the inlet and the outlet. The first fine bubble generation portion may include one or more venturi flow paths. Each of the one or more venturi flow paths may include a diameter-decreasing flow path of which flow path diameter decreases from upstream to downstream and a diameter-increasing flow path which is disposed downstream of the diameter-decreasing flow path and of which flow path diameter increases from upstream to downstream. A slit may be defined in at least one venturi flow path of the one or more venturi flow paths, wherein the slit may be recessed outwardly in a radial direction from an inner surface of the venturi flow path. The slit may be disposed continuously from a first end coincident with a downstream end of the diameter-increasing flow path to a second end located upstream of the downstream end.

A plasma-activated gas generated by a plasma-activated gas generator is mixed with a liquid in a variety of ways to generate a gas activated liquid. The gas activated liquid may be applied to various items, surfaces, and/or added to fluid volumes to affect chemical specifies and organism therein.