Mobile spray system

A spray system, comprising:

• a fluid tank assembly;
• a fluid pump system;
• a connection assembly configured to releasably connect the fluid pump system to the fluid tank assembly, the connection assembly including a mechanical latch and at least two fluid disconnect fittings;
• a flow-routing component configurable among a plurality of flow states to direct fluid between the fluid tank assembly, a supply line, and a spray outlet;
• a user interface including a set of one-button function triggers;
• and
• an electronic controller operatively coupled to the user interface, the flow-routing component, and the fluid pump system;
• wherein, in response to actuation of any one of the one-button function triggers, the controller automatically configures the flow-routing component and energizes a selected pump or pumps to execute a corresponding function without further user selections.

A three-way, four-position rotary valve assembly, comprising:

• a stationary valve body having three fixed ports;
• a rotatable valve member disposed within the stationary valve body, the rotatable valve member defining a T-shaped flow passage with three openings configured to re-register with the three fixed ports;
• a motor operatively coupled to rotate the rotatable valve member through 360° about a central axis;
• a magnetic element fixed to rotate with the rotatable valve member;
• four Hall-effect sensors arranged circumferentially about the central axis;
• and
• a control printed circuit board (PCB) in signal communication with the Hall-effect sensors and the motor;
• wherein the valve assembly is indexable to four discrete flow states separated by about 90° of rotation, each flow state establishing a distinct connection pattern among the three fixed ports.