A system for combining and spraying fluids that includes a principal reservoir for holding a carrier fluid; an electric pump in communication with the principal reservoir; a power source for energizing the pump selectable between a rechargeable 12-volt battery and a 110-volt AC line; at least one auxiliary reservoir for holding an auxiliary fluid to be controllably mixed with carrier fluid being drawn from the principal reservoir; a selector valve for selecting which if any of the auxiliary fluid(s) are to be combined with the carrier fluid; a Venturi tube for combining streams of carrier fluid and selected auxiliary fluid(s) in a predetermined ratio which may be varied as desired; and a spray wand in fluid communication with the Venturi tube for discharging the selected fluids.

A spray apparatus having built-in air regulation and a swivel connection to an air supply and uses thereof are described herein.

The disclosure relates to a pressure shutoff valve for a pressure washer. The pressure shutoff valve has an effective throttle gap with an overall length (a), as measured in the direction of the longitudinal axis of the valve body, between the valve housing and the valve body, wherein the effective throttle gap is part of the flow connection between the inlet and the outlet. The valve body has a maximum diameter (d) extending radially with respect to the longitudinal axis. The overall length (a) of the effective throttle gap is at least 50% of the maximum diameter (d) of the valve body in the first closed position of the pressure shutoff valve.

Systems and methods for cleaning a heat recovery steam generator system including tubes and fins associated therewith using deep cleaning alignment equipment are described. The deep cleaning alignment equipment primarily includes at least one wedge and at least one wand. The wedge may be an elongate wedge configured to maximize the surface area that contacts the tubes and fins, which in turn minimizes the amount of stress about any specific point of the tubes or the fins. Additionally, the wedge may be made of a soft, composite material, such as a high strength carbon fiber nylon. The composite material is softer than the material that makes the tubes and fins. As a result, when the wedge contacts the tubes and fins, the tubes and fins will not sustain damage. Instead, any damage that may occur would be to the wedge.

A self-rotating device for cleaning with ultra-high water pressure having a base supported by front and rear wheels with a handle extending therefrom. A spray bar assembly with a plurality of nozzles constructed and arranged to cause rotation of the spray bar through fluid discharge is mounted beneath the base. A hydraulic pump is positioned with spray bar and coupled to a reservoir mounted on the handle. The hydraulic pump is rotated by the spray bar assembly, causing hydraulic fluid to recirculate through the reservoir, wherein an adjustable flow valve permits control of the spray bar assembly rotation speed.

A high-pressure cleaning device has a conveying pump and a conveying conduit with a spray opening. The conveying conduit conveys cleaning liquid, conveyed by the conveying pump, in a conveying direction from the conveying pump to the spray opening of the conveying conduit. A switch element is provided that has at least a first switched state and a second switched state. An actuator is provided that adjusts the switch element between the first switched state and the second switched state. The high-pressure cleaning device is provided such that the actuator adjusts the switch element between the first switched state and the second switched state by an adjusting force effected by the cleaning liquid on the actuator.

The disclosure relates to a pressure cleaning device comprising a pressure generating unit for pressurizing a fluid and for dispensing a pressurized fluid via a hose attachment, preferably via a hand gun or via a cleaning nozzle. The pressure cleaning device can be operated in at least two different operating modes. According to the disclosure, a preferably electric pressure sensor for determining an actual operating pressure and/or a flow rate sensor for determining an actual flow rate and a control device are associated with the pressure generating unit. The control device is designed to control the pressure generating unit in particular, based on a respectively set operating mode in accordance with an actual operating pressure and/or an actual determined flow rate.

A spray wand for use with a chemical or chemical formulation in solid form. The spray wand has a spray wand body having a hollow tube with an angled wand spray end, a spray end selector attached to the angled wand spray end, a wand hose end screen inserted into or otherwise attached to the hollow tube of the spray wand body, and a wand hose end connected to the spray wand body. The wand hose end has a wand hose end valve for control of water flow from a hose. A refill cartridge having a swirl chamber may be attached to the hollow tube. The refill cartridge has external channels or grooves on its external surface as a water rinse feature for the spray wand.

The invention provides a rugged cleaning device configured to clean outdoor surfaces using a variety of fluids and techniques. The outdoor cleaning device includes a brush head, a motor and a transmission for providing a driving force to the brush head, a fluid tank for storing a fluid (e.g., a cleaning solution or detergent), and a controller for controlling mixing (or not mixing) the fluid stored in the fluid tank during operation of the outdoor cleaning device. The controller may enable fluid from the cleaning tank to be mixed with a second fluid (e.g., water) prior to being dispensed via a plurality of nozzles. The nozzles may be formed via grooves on an inner cover and an outer cover may be provided to close off the grooves to form fluid channels. The fluid channels enable the distribution of cleaning fluids in various directions, enhancing the brush head's cleaning capability.

The invention provides a rugged cleaning device configured to clean outdoor surfaces using a variety of fluids and techniques. The outdoor cleaning device includes a brush head, a motor and a transmission for providing a driving force to the brush head, a fluid tank for storing a fluid (e.g., a cleaning solution or detergent), and a controller for controlling mixing (or not mixing) the fluid stored in the fluid tank during operation of the outdoor cleaning device. The controller may enable fluid from the cleaning tank to be mixed with a second fluid (e.g., water) prior to being dispensed via at least one nozzle. The at least one nozzle may be secured to a guard cover via grooves on an inner guard cover and an outer guard cover. The nozzle(s) enables the distribution of cleaning fluids in various directions, enhancing the brush head's cleaning capability.