A liquid spraying system having a liquid spray section and a controller for controlling liquid to the spray section. The controller includes a valve operable between multiple positions for controlling the supply of liquid to the spray section and enabling the flow of liquid from the spray section to a flow back line only after the liquid supply to the spray section has been terminated.

A spray nozzle comprising: a body comprising a duct, a seat arranged at the first end, and including an opening forming an inlet, a guide comprising a tubular jacket and a retaining member, the retaining member retaining the jacket in the duct, a plug mounted to slide axially in the channel of the jacket, the plug being pushed back against the opening by a spring, and in abutment against the bottom of the jacket, the guide comprising a radial vent, which comprises a vent channel isolated from the flow of fluid and connecting the inside of the guide jacket to a bore formed in the body of the spray nozzle.

A liquid spraying system having an elongated liquid supply boom and a plurality of spray nozzle assemblies. The spray nozzle assemblies have a compact design with a nozzle body having a liquid inlet and a first spray nozzle carrying liquid outlet section on opposite upper and lower sides, second and third spray nozzle carrying liquid outlet sections disposed in transverse relation to the supply boom; and first and second check valve supporting sections disposed parallel to the liquid supply boom. A first of check valves is operable for controlling liquid flow from the supply boom to one or both of the second and third spray nozzles, and a second check valve is operable for controlling liquid flow from said liquid inlet to said first spray nozzle. The illustrated check valves are operable in response to the pressure of the supply liquid.

An apparatus for personal hygiene of patients with reduced mobility is presented. The apparatus includes a support casing, a housing for accommodating a removable tank, a grippable washing head, a pump, a hydraulic circuit, and a valve assembly. A working operation mode and a standby operation mode are provided. In the working operation mode, the valve assembly determines in the hydraulic circuit a water supply path from the tank, to the pump, to the washing head and finally out of the delivery mouth. In the stand-by operation mode, the valve assembly determines in the hydraulic circuit a water recirculation path from the tank, to the pump, to the washing head and finally back to the tank, without water flowing out of the delivery mouth.

Water outlet fitting, e.g. tap or shower head, producing a combined flow of gas and water, and power connector therefor An apparatus produces bubbles of pure water from a flow emitter (11) comprising an annular water outlet (13) surrounding a gas outlet (12) and operating within a defined parameter space. One or more flow emitters may be incorporated into an emitter body (10) configured as a shower head or a tap. In another aspect, an apparatus produces bubbles of water from coaxial, gas and annular water flowpaths. In another aspect, a magnetic power connector is arranged to supply electrical energy to a shower head.

The valve core assembly includes a valve housing member, an actuating member, a control plate, a moving plate member, a static plate member, a valve seat member and a sealing member coupled to obtain the valve core assembly. The valve housing member includes a first end portion and a second end portion. The actuating member is rotatably disposed in the valve housing member along the first end portion. The control plate is disposed in the second cavity and coupled to the actuating member. The moving plate member is coupled to the control plate and disposed in the second cavity. The static plate member is disposed adjacent to the moving plate member in the second cavity. The valve seat member is detachably coupled to the valve housing member. The sealing member is removably disposed in a cutout portion of the valve seat member. The valve seat member includes design variations.

The disclosure relates to an applicator (RZ), in particular a rotary atomizer, for the application of a coating agent, in particular a two-component paint, comprising a first coating agent connection (SL) for feeding a first coating agent, in particular a basic resin of a two-component paint, a first coating agent strand (L1-L4), which extends in the applicator (RZ) from the first coating agent connection (SL) and carries the first coating agent, and a first valve (SLV1), which is arranged in the first coating agent strand (L1-L4) and controls the flow of the first coating agent, wherein the first valve (SLV1) can be controlled by a first control signal. It is proposed that a first pressure-relief valve (SLV1), which is actuated by its own medium, is arranged in the first coating agent strand (L1-L4) and, to avoid a problem being caused by excessive pressure, opens automatically when the pressure upstream of the first pressure-relief valve (SLV1) exceeds a certain maximum pressure.

A machine tool chip removal device including a coupling interface to couple with a rotatable spindle of a machine tool to facilitate rotation of the machine tool chip removal device about an axis at a rotational speed. The chip removal device can also include a main fluid channel with an opening to receive pressurized fluid from the machine tool. The chip removal device can further include a first fluid delivery channel and a second fluid delivery channel to direct fluid in different directions. Each fluid delivery channel can be in fluid communication with the main fluid channel. In addition, the chip removal device can include one or more valves associated with the first and second fluid delivery channels to selectively allow fluid passage from the main fluid channel to the fluid delivery channels. The one or more valves can be actuated by varying fluid pressure and/or rotational speed.

A wear part includes at least one wear component made from abrasion-resistant material and an upper seal groove around a central aperture on the upper face of the wear part. The upper seal groove is adapted to receive an axially compressible seal. A spray nozzle assembly includes at least one wear part made from a hard and abrasion-resistant material and a protective housing made from a strong and resilient material and having a downstream chamber adapted to receive one or more of the wear parts in releasably trapped relationship, the downstream chamber having a wall including a post defined by a slot in the downstream chamber wall either side of the post, the post including an inwardly extending protuberance at or near its end and adapted to prevent the wear part from escaping from the downstream chamber.

A retractable cleaning nozzle for spray cleaning an interior surface of a pipe or a tank includes a nozzle housing configured to be stationary mounted in a hole of the side wall of the pipe or tank and having a front side arranged to face towards the interior of the pipe or tank and a rear side arranged to face away from the interior of the pipe or tank, an inlet port configured for receiving a cleaning fluid, and a cylindrical interior bore with a central axis defining an axial direction, wherein the interior bore is open towards the front side of the nozzle housing. The cleaning nozzle includes a first plug movably arranged in the axial direction within the bore of the nozzle housing between a retracted position and a protruding position, wherein the first plug has a sleeve-shaped body with a front wall closing a front portion of the sleeve-shaped body, wherein the front wall of the sleeve-shaped body includes a first set of spray holes configured to eject cleaning fluid substantially in the axial direction, wherein the sleeve-shaped body of the first plug includes a second set of spray holes configured to eject cleaning fluid substantially in a radial direction perpendicular to the axial direction, wherein a front surface of the first plug is substantially flush with a front surface of the nozzle housing in the retracted position of the first plug, and wherein a front portion of the first plug, including the first and second set of spay holes, protrudes beyond the front surface of the nozzle housing in the protruding position of the first plug for enabling spray cleaning of the interior surface of the pipe or tank. The cleaning nozzle includes a second plug arranged within a space defined by the sleeve-shaped body of the first plug and configured for closing a flow path from the inlet port to the first set of holes of the first plug when the first plug is located in the retracted position.