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.

A flow control device including: a housing including a flow passage extending from an inlet, through the housing to an outlet; a hollow tube within the housing defining a tube passage included in the flow passage of the housing; a valve seat in the housing and disposed between the inlet to the flow passage and an inlet to the tube passage of the hollow tube; and a drain check shuttle within the housing and configured to move reciprocally with respect to both the housing and the hollow tube, wherein the drain check shuttle has: a first position within the housing at which the drain check shuttle abuts the valve seat, and closes a gap between the valve seat and the inlet to the hollow tube; and a second position displaced from the valve seat and which opens the gap.

The invention relates to an agricultural sprayer valve unit. An electronically controlled control valve and a passive overflow valve serially connected in fluid communication are arranged in the agricultural sprayer valve unit between a primary line and a secondary line. The agricultural sprayer valve unit may be used for any agricultural sprayer valve device, in particular in connection with the discharge of a fluid such as water, a fertilizer, an insecticide, a weedkiller and the like in agricultural or fruit or vegetable cultivation.

A spreading assembly is provided. The spreading assembly comprises a spreadable material container, a spreading mechanism, and a motor. The spreading mechanism is rotatably mounted to a bottom section of the material container and can disperse the spreadable material 360° around the spreading assembly. The motor is operatively connected to the spreading mechanism to engage same in rotation. The spreading assembly comprises a coupling assembly to engage the spreading assembly with an unmanned aerial vehicle (UAV) configured to transport the spreading assembly while it operates.

The present disclosure relates to the manufacture and use of an additive manufacturing (AM) system that employs a spacer flow guide disposed or formed within a housing that defines a chamber of the AM system. The spacer flow guide may direct various portions of a gas flow within the chamber to respective exhaust channels. For example, in combination with portions of the housing, the spacer flow guide may define a main exhaust channel that extends between the chamber and a gas outlet formed in a downstream end of the housing. Additionally, a bypass exhaust channel may be defined between the chamber and a back surface of the spacer flow guide to fluidly couple an upper portion of the chamber to the main exhaust channel.

Discharge ports of liquid floor finish applicators are known to clog if proper steps are not taken immediately after use. Complicating this clogging problem are the facts that floor finishes are formulated to dry quickly when exposed to air and applicator cleaning creates waste and takes considerable time and effort. Accordingly, applicant's invention addresses the problem of clogging by using a liquid reservoir to enclose the applicator's discharge port thus preventing it from clogging when not in use. To illustrate applicant's invention, a backpack floor finish applicator system dispenses liquid floor finish through a hose and a pump that forces the finish through a nozzle onto the floor. The invention uses a non-contact switch that activates a light which alerts the operator when the nozzle is exposed to air which will cause clogging thereby reminding the operator to position the nozzle within the liquid reservoir when not in use.

A rotary sprinkler in accordance with an embodiment of the present disclosure includes a riser with a nozzle assembly rotatable mounted thereon. The nozzle assembly includes a pressure regulator and flow control element.

Systems and methods for suppressing vaporization of a volatile fluid dispensed from a pressure vessel are provided. The system includes an evaporator coupled in thermal communication with a first flow of volatile fluid from the vessel and in fluid communication with a second flow of volatile fluid from the vessel. The evaporator includes at least one channel for channeling the second flow of volatile fluid therethrough. A metering valve is coupled in fluid communication with the channel and between the evaporator and the vessel. In addition, the system includes a compressor coupled in fluid communication with and downstream from the at least one channel. Moreover, the system includes a return line coupled in fluid communication with an outlet of the compressor. The compressor is configured to compress the second flow of volatile fluid and channel the compressed second flow of volatile fluid to the pressure vessel via the return line.

A liquid ejecting apparatus includes a liquid ejecting section from which liquid is ejected. A return passage has a first end connected to a supply passage at a first location and a second end connected to the supply passage at a second location. The second location is positioned closer to the liquid ejecting section than the first location. The return passage and the supply passage constitute a circulating passage. A pump can cause fluid to flow through the circulating passage. A replaceable filter unit is a portion of the return passage. A discharge passage through which the fluid is discharged to the outside is connected to the return passage. An inflow controller can suppress external fluid from entering the discharge passage.

A spray gun system includes a spray gun, a pressure sensor, and a controller. The spray gun is configured to distribute a mixture of air and fluid onto a working surface. The pressure sensor is fluidly connected to the spray gun and is configured to measure fluid pressure within the spray gun system. The controller is electrically connected to the pressure sensor and is configured to calculate pressure error based on the measured pressure and a pressure set-point. The controller is further configured to increment a counter if the pressure error exceeds an error threshold, perform a flow control to adjust the pressure set-point to achieve a target flow rate in response to determining that the increment counter exceeds a count threshold, and perform a pressure control loop to adjust the fluid pressure within the spray gun system to achieve the pressure set-point.