Chemical delivery devices for vehicle wash systems include a chemical chamber with an inlet and an outlet and a piston arranged therebetween. The piston includes a one-way valve. A drive mechanism moves the piston in an advancing and retracting direction. Driving the piston in the advancing direction results in the one-way valve closing, and an amount of the chemical on a first side of the piston is dispensed from the outlet and a corresponding amount of the chemical to the amount dispensed is drawn into the chemical chamber at a second side of the piston, via the inlet. Retracting the piston in the retracting direction results in the one-way valve opening and the corresponding amount of the chemical drawn in from the chemical supply is transmitted through the one-way valve from the second side to the first side of the piston for subsequent dispensing from the chemical chamber.

A chemical delivery device for use in a vehicle wash system includes a chemical chamber with a piston, a chemical inlet and a chemical outlet, and a one-way valve. A drive mechanism receives pressurized driving fluid from a pressurized fluid source, and a drive shaft is joined to the piston. During dispensing, the pressurized driving fluid causes the drive shaft to drive the piston to dispense an amount of the chemical, and the one-way valve is closed. During a resetting stroke, the pressurized driving fluid causes the drive shaft to retract the piston, and the one-way valve is open and permits passage of chemical therethrough for dispensing from the chemical chamber in a subsequent dispensing operation. After the resetting stroke, the pressurized driving fluid may retain the drive shaft in the retracted position and the drive mechanism is in an idle state until initiation of the subsequent dispensing operation.

A chemical delivery device for use in a vehicle wash system includes a chemical delivery device with a chemical chamber having an inlet, an outlet, and a one-way valve, and a drive mechanism with a drive shaft joined to a piston in the chemical chamber. Upon the drive mechanism driving the piston in a dispensing direction, the one-way valve is closed and chemical in the chemical chamber is pressurized and the piston causes the pressurized chemical to be dispensed from the outlet, e.g., to a vehicle wash component, and during dispensing, a vacuum is created in the chemical chamber such that a corresponding amount of the chemical to an amount dispensed is drawn into the chemical chamber from a chemical supply via the chemical inlet. Upon the drive mechanism retracting the piston in a resetting direction, the one-way valve is open and permits passage of fluid therethrough for subsequent dispensing.

A fluid delivery manifold for use with a fluid delivery system includes a fluid passageway and at least one integrated valve, each with a plunger housing having an air chamber. The air chamber and the fluid passageway are non-fluidly coupled relative to each other. A valve plunger in the plunger housing blocks a valve orifice of the fluid outlet in a closed position to prevent passage of fluid, and opens to permit fluid to pass from a fluid inlet of the passageway through the valve orifice for dispensing from a fluid outlet. An actuator assembly coupled to each integrated valve includes an actuator configured to adjust a position of a valve limiter to adjustably control an effective valve orifice area of the valve orifice based on a distance of movement of the valve plunger to the open position.

A fluid delivery system for dispensing fluid in a vehicle wash includes at least one integrated valve, each with a plunger housing having an air chamber configured to receive a valve limiter. A valve plunger in the plunger housing has open and closed positions, and blocks a valve orifice when closed, and permits the passage of fluid through the valve orifice for dispensing from a fluid outlet when opened. An actuator assembly is coupled to each integrated valve, and each includes an actuator and the valve limiter. A control system is communicatively coupled to each actuator and is configured to receive a selection corresponding to a selected outlet pressure and based on the selection, causes the actuator assembly to adjust a position of the valve limiter to reach a target flow rate or a target outlet pressure of the motive fluid when the valve plunger is in the open position.

A chemical delivery assembly for use in a vehicle wash system includes a chemical delivery device with a piston including a one-way valve and a drive mechanism with a drive shaft joined to the piston. A flow sensor and a control system communicatively coupled thereto are also integrated into the assembly. The control system uses information from the flow sensor to control chemical dispensing by causing the drive mechanism to operate to dispense chemical, while the one-way valve is in a closed state resulting in a corresponding amount of the chemical to the amount dispensed being drawn into the chemical chamber from an inlet via a chemical supply. The control system causes the drive mechanism to reset the piston, while the one-way valve is in an open state resulting in the chemical drawn in from the chemical supply being transmitted through the one-way valve for subsequent dispensing.

A chemical delivery assembly for use in a vehicle wash system includes a chemical delivery device including a one-way valve and a drive mechanism with a piston arranged in a chemical chamber, and a loading valve coupled to a chemical outlet by a fluid tight connection, which also includes a dispensing nozzle for dispensing chemical into motive fluid. Actuation of the drive mechanism causes the one-way valve to close to prevent passage of chemical therethrough and the piston to dispense pressurized chemical from the chemical chamber resulting in the pressurized chemical being delivered to a chemical priming cavity of the loading valve, which chemical is dispensed from the dispensing nozzle upon reaching a predefined pressure threshold. During resetting of the piston by the drive mechanism, the one-way valve is open and permits the chemical within the chemical chamber to pass therethrough such that the chemical can be subsequently dispensed.

A vehicle wash assembly for distribution of fluids at a vehicle wash location includes a vehicle wash component operable to dispense fluid into a fluid line for application onto a vehicle by a downstream applicator, and an inlet or outlet of the vehicle wash component is associated with a port configured with an adjustable effective orifice area. A control system receives instructions corresponding to timing information, a target flow rate and/or a target volume of the fluid to be dispensed from the outlet, analyzes the instructions, and generates separate instructions that differ from those received. The separate instructions include a time for when the vehicle wash component is to be actuated, a duration of operation upon actuation, and an effective orifice area of the port. Upon transmission, the separate instructions cause the vehicle wash component to dispense the fluid according to such instructions during a dispensing operation.

A vehicle wash assembly includes a chemical delivery device, a motive fluid delivery device, a mixing site fluidly coupled thereto for mixing dispensed chemical and motive fluid to form a mixture, and a control system integrated into the vehicle wash assembly and communicatively coupled to the chemical and fluid delivery devices, which causes a drive mechanism of the chemical delivery device to dispense chemical from the chemical outlet, and a valve of the motive fluid delivery device to dispense the motive fluid from the motive fluid outlet. The control system receives instructions for operation of the vehicle wash assembly, and in response, the analyzes the instructions, generates separate instructions for operating the chemical delivery device and the fluid delivery device based on the analysis, and transmits the separate instructions to cause the chemical delivery device and the fluid delivery device to operate according to the separate instructions.

Methods and systems of admixing hydrocarbon liquids from two or more sets of tanks into a single pipeline to provide in-line mixing thereof. In an embodiment of the in-line mixing system, hydrocarbon liquids stored in at least one tank of each of two or more sets of tanks positioned at a tank farm are blended into a blend flow pipe via in-line mixing and the blended mixture is pumped through a single pipeline. In one or more embodiments, the in-line mixing system employs a separate spillback or recirculation loop that is fluidly connected to each set of the two or more sets of tanks to control the flow of the hydrocarbon fluid/liquid from each set of tanks to the blend flow pipe. Associated methods of operating one or more embodiments of the system include regulation of spillback or recirculation loop flow rate and/or pressure to drive the actual blend ratio towards a desired blend ratio.