According to an implementation, a pressure washer system may include a pump and an engine drivingly coupled with the pump. A pressure washer controller may be associated with one or more of the pump and the engine. A battery may be communicatively coupleable with the pressure washer controller for one or more of receiving data from the pressure washer controller and transmitting data to the pressure washer controller. The battery may include a memory module for storing one or more of data received from the pressure washer controller and data to be transmitted to the pressure washer controller.

A spraying nozzle, intended for spraying a product, defines a passage for the circulation of the product through the nozzle, wherein the passage opens through a wide connection orifice to the outside of the nozzle at an upstream end thereof, and through a narrow spraying orifice at a downstream end of the nozzle in order to spray the product; the passage has, between the connection orifice and the spraying orifice, at least one pre-atomization narrowing capable of atomizing the product, followed by a broadening downstream of the pre-atomization narrowing.

A seal assembly can include an annular seal having a first end portion and a second end portion. The second end portion can include a first annular face, a first tapered portion, and a radially-inner surface configured to seal an outer surface of a plunger. The seal assembly can include a backup ring having a first end portion having with a second annular face and a second tapered portion, and a second end portion. The seal assembly can include an annular hoop ring positioned between the annular seal and the annular backup ring, the annular hoop ring having a first tapered surface configured to engage the annular seal, and a second tapered surface configured to engage the annular backup ring. An angle between the second tapered surface and the longitudinal axis of the annular hoop ring can be between 50 degrees and 80 degrees.

A fluid applicator configured to receive a pressurized fluid includes a pressure vessel configured to receive the pressurized fluid from a fluid delivery line. The pressure vessel includes a valve chamber configured to receive a valve assembly, a filter chamber configured to receive a filter assembly, and a fluid delivery line configured to be coupled to the fluid delivery line. The fluid applicator further including a tip assembly coupled to the pressure vessel and configured to atomize the pressurized fluid.

A flow control assembly includes a manifold coupled to a positive displacement pump. A fluid input unit is coupled to the fluid inlet and includes a diluent input to receive a diluent and a concentrate input to receive a selectively adjustable flow of a liquid concentrate. A mixing chamber combines the diluent and the liquid concentrate to form a mixed solution to be delivered to the pump. A bypass unit has a bypass conduit to receive a high pressure mixed fluid from the pump. A bypass valve is positionable within the manifold between a closed position and an open position. The bypass valve is closed when the high pressure mixed fluid is below a threshold pressure and open when the high pressure mixed fluid is above the threshold pressure. A portion of the high pressure mixed fluid is reintroduced to the mixing chamber via the bypass inlet.

Some implementations can include a zero turn radius utility vehicle that is operated in a standing position by an operator using foot controls provided on the utility vehicle. Accordingly, the operator's hands are free to operate handheld equipment (e.g., a line trimmer, edger, blower, etc.) while the operator controls the utility vehicle via the foot controls. Further, the utility vehicle may have a single third wheel (and no mower deck or other deck or protrusion) extending from the front of the vehicle frame so as to minimize any protrusions to the front of the vehicle, which can permit the operator to work on the ground in front of the utility vehicle using handheld equipment without interference from a mower deck, while remaining in a standing position on the utility vehicle and being able to simultaneously control the utility vehicle (via foot controls) and perform work with handheld equipment.

A pressure nozzle support includes a body. A first and second guide is attached or integral to the body and is formed in a shaped that glides along a vertical surface. A nozzle coupling is attached to the body or integral to the body behind the first and second guides. The nozzle coupling is configured to support a pressure nozzle that provides a stream of pressured fluid in a region between the first and second fixed guide and is positioned at a height above a bottom surface of each of the first and second fixed guides so that a nozzle positioned therein will be at a predetermined distance away from the vertical surface.

A powered spray system designed for home use comprises a chemical supply tank, a sprayer for applying a chemical in the chemical supply tank, and a coupling connecting a water source with the chemical supply tank and sprayer for mixing chemical contained in the chemical supply tank with a stream of water as the water is sprayed. The coupling comprises a first inlet configured to connect to a standard garden hose for connecting the coupling to the water source, an outlet configured to connect to a standard garden hose for connecting the coupling to the sprayer, and a second inlet configured to connect to the chemical supply tank.

An agitator system for a diving station that directs water flow from the perimeter of a pool onto a water surface of the pool, where the agitator system is connected to a pool perimeter assembly having a return conduit for receiving pressurized water, and the return conduit has at least one return outlet, includes a spray port and a fluid delivery system. The spray port is located on the pool perimeter assembly and is configured for directing a water spray onto the water surface of the pool. The fluid delivery structure is in downstream fluid communication from the return conduit and in upstream fluid communication with the spray port. A first portion of the pressurized water in the return conduit is communicated to the spray port via the fluid delivery structure, and a second portion of the pressurized water is delivered to the return outlet for dispersing to the pool.

Systems and methods for containing fluid splash include using a fluid flow spaced from a vessel and/or fluid surface to effectively trap materials from a fluid stream flowing through the fluid flow. The fluid flow creates a spray envelope in connection with the fluid surface and/or vessel and substantially prevents droplets of the fluid stream from exiting the vessel. The fluid flow is created by allowing a supply fluid to flow through a nozzle oriented to cast a spray pattern into the vessel and/or into contact with the fluid surface. The fluid flow may be selectively activated and deactivated and/or be automatically (e.g., light or motion) activated and deactivated.