A foam dispenser having a metal housing has a spool valve socket therein. A metal handle extends from the housing. A spool valve is disposable within the spool valve socket. A trigger couplable to the spool valve enables the spool valve to be rotated between open and closed orientations within the housing. The spool valve has internal channels for selectively passing liquids through the spool valve in the open orientation and not in the closed orientation. The spool valve also has a channel for selectively passing a gas through the spool valve in both the open and closed orientations.

The present invention relates to a liquid chemical sprayer includes: a nozzle cap which is rotatably assembled and installed in place at a rotation guide of a body; a nozzle head; a nozzle is formed at a front end of a nozzle pipe formed extending a predetermined length toward the front, and a guide plate is formed protruding to be assembled to a guide rail formed at a neck capable of operating forward and backward; a valve body formed in a cylindrical shape; a valve housing formed in a cylindrical structure fixedly installed at a rear of the nozzle head and forming a valve seat at an inner portion; and a motor housing faced and assembled with the rear of the valve housing so that the rear thereof is maintained in a fixed state, in which an air blowing module is installed.

The present invention relates to a liquid chemical sprayer includes: a nozzle cap which is rotatably assembled and installed in place at a rotation guide of a body; a nozzle head; a nozzle is formed at a front end of a nozzle pipe formed extending a predetermined length toward the front, and a guide plate is formed protruding to be assembled to a guide rail formed at a neck capable of operating forward and backward; a valve body formed in a cylindrical shape; a valve housing formed in a cylindrical structure fixedly installed at a rear of the nozzle head and forming a valve seat at an inner portion; and a motor housing faced and assembled with the rear of the valve housing so that the rear thereof is maintained in a fixed state, in which an air blowing module is installed.

The present invention, in some embodiments thereof, relates to a spreader for spreading paste (for example a tile adhesive) over a surface and more particularly, but not exclusively, to a system for pumping and uneven spreading of adhesive along a surface of a building. For example, the system may include a source of the paste optionally including a mixer, driver and/or conveyer. The paste may be driven to a spreader. For example, the spreader may deposit the paste unevenly over a surface. For example, the spreader may include multiple outlets and/or an uneven spreading blade (for example in the form of a comb). For example, the paste may be spread as lines across the surface.

A fan-shaped air suction spray nozzle automatically adjusting an air suction speed is provided in the present invention, which includes a spray nozzle body and a liquid channel, the spray nozzle body being provided with a liquid channel in communication with a nozzle hole, and further includes a pressure groove and an air intake channel, wherein an inlet section of the liquid channel is in communication with the pressure groove, and the air intake channel is in communication with the liquid channel after penetrating through the pressure groove; an air intake orifice plate is installed in the pressure groove through an elastic damping apparatus, and a change of the pressure at an inlet of the liquid channel causes the air intake orifice plate to move between the pressure groove and the air intake channel; the air intake orifice plate is provided with several through holes of the same or different sizes, which are configured to change the air intake volume in the liquid channel as the air intake orifice plate moves in the pressure groove.

A programmable networked variable atomizer (PNVA) assembly is provided. In one embodiment, the PNVA assembly includes an atomizing portion. The atomizing portion includes multiple miniature fluid control valves and an air assisted atomizing outlet. The PNVA assembly also includes a PNVA electronic module. The PNVA electronic module includes a microcontroller, at least one pulse width modulation driver, a wireless radio, a differential pressure sensor, and a laser targeting LED.

A programmable networked variable atomizer (PNVA) assembly is provided. In one embodiment, the PNVA assembly includes an atomizing portion. The atomizing portion includes multiple miniature fluid control valves and an air assisted atomizing outlet. The PNVA assembly also includes a PNVA electronic module. The PNVA electronic module includes a microcontroller, at least one pulse width modulation driver, a wireless radio, a differential pressure sensor, and a laser targeting LED.

A device for adjusting air pressure of a spray gun, and a method for adjusting air pressure of a spray gun includes installing an air adjustment valve in a first chamber located at the rear end of a rear path of the spray gun. The spray gun is connected with a compressor and the users operates the air adjustment valve to reduce the pressure in the first chamber, and the second chamber is supplied with a pre-set pressure so as to stably provide constant pressure to the front path to proceed paint spraying task.

A device for adjusting air pressure of a spray gun, and a method for adjusting air pressure of a spray gun includes installing an air adjustment valve in a first chamber located at the rear end of a rear path of the spray gun. The spray gun is connected with a compressor and the users operates the air adjustment valve to reduce the pressure in the first chamber, and the second chamber is supplied with a pre-set pressure so as to stably provide constant pressure to the front path to proceed paint spraying task.

An apparatus that produces and dispenses foam comprises a housing, an adjustable water flow member, an adjustable foam concentrate flow member, a first mixing chamber comprising an outlet, a water pressure reducing member with a portion thereof disposed within the first mixing chamber, a second mixing chamber in a communication with the outlet from the first mixing chamber, an air pressure reducing member with a portion thereof disposed within the second mixing chamber, a third mixing chamber in a communication with an outlet from the second mixing chamber, the third mixing chamber comprising a port in a communication with an external environment to the housing, and a screen member disposed within the third mixing chamber and configured to convert a mixture of air, water and foam concentrate exiting the outlet of the second mixing chamber into the foam, the foam being dispersed through the port during operation of the apparatus.