Apparatuses for controlling gas flow are important components for delivering process gases for semiconductor fabrication. In one embodiment, a gas flow control system for achieving improved transient response in apparatuses for controlling gas flow is disclosed. Specifically, by providing a command to an apparatus to deliver a predetermined mass flow rate at a future turn on time, the apparatus is able to pre-pressurize a P1 volume so that the response time of the apparatus is no longer dependent on the speed of the apparatus's control valves and the limitations of the control loop.

Spray heads for use with desuperheaters and desuperheaters including such spray heads. One example of a spray head includes a main body having an exterior surface and defining a central passage, the main body adapted for connection to a source of fluid, at least one entrance port formed in the main body along the central passage, and at least one spray nozzle arranged adjacent the exterior surface of the main body. The spray head also includes a plurality of flow passages, each of the plurality of flow passages providing fluid communication between the entrance port and an exit opening of the spray nozzle. A first one of the plurality of flow passages follows a first non-linear path and has a first distance, and a second one of the plurality of flow passages follows a second non-linear path and has a second distance different from the first distance.

A spray system for a milling machine includes a plurality of flow adjustment assemblies, which include a flow adjustment assembly, and a spray controller. The flow adjustment assembly includes a pressure sensor and a valve. The spray controller is configured to receive, from a user interface, an input that indicates a desired flow rate of a fluid through the flow adjustment assembly. The spray controller is configured to receive, from the pressure sensor, a pressure measurement of the fluid. The spray controller is configured to determine, based on receiving the pressure measurement, a desired opening size of the valve to enable the desired flow rate of the fluid. The spray controller is configured to actuate the valve to adjust an opening size of the valve to equal the desired opening size and cause the fluid to flow through the flow adjustment assembly at the desired flow rate.

A valve including a body having an inner central orifice and a chamber, a piston formed by a rod and by a head mounted in the chamber, the rod extending outside the body and moving in a bore of an application system. The valve includes a first sealing device around the rod on one side of the valve where the rod extends outside the body, part of the chamber being filled with a pressurized control fluid to obtain movement of the piston against the force of a spring housed in the body. The valve includes a second sealing device around the rod, between the first sealing device and the chamber. The valve includes a vent duct in the rod that communicates with the inner central orifice between the first and second sealing devices and emerges in the open air or in part of the chamber communicating with the open air.

A shower head assembly includes a main body, a face plate, and a switching device installed inside the main body for controlling an outflow of water from the face plate. The circumferential portion of the face plate is provided with a plurality of water outlet units. Each water outlet unit includes a plurality of jet orifices for producing a plurality of fine spouts. Since the diameter of each jet orifice is small, the water discharge force of the fine spouts is stronger. The water-saving effect is good. The shower head can be used for a low water pressure environment.

An arbitrary directional touch switch, having a valve body and a push member. The valve body includes a housing, a main flow passage and a switching mechanism. The housing has at least one support portion formed at a water outlet end that protrudes outwardly. The switching mechanism selectively blocks the main flow passage. The push member is connected to the valve body, and has a water passage portion, at least one suspension portion and a push-abutment portion. The suspension portion is movably connected to the support portion, and the push-abutment portion can drive the switching mechanism to block the main flow passage. As a motion space is formed on the inner side of the suspension portion, the switching mechanism can be driven to operate by pushing the push member in an axial, transverse and/or oblique direction, to switch the arbitrary directional touch switch between closed and open states.

A device for dispensing liquid onto a target area of a vehicle surface is described, and includes a mixing valve that is in communication with a pressurized fluidic supply system via a fluidic distribution system, and a controller. The mixing valve includes an outlet orifice that is disposed proximal to the target area, and the mixing valve includes first and second valve conduits that are fluidly connected to the outlet orifice via a mixing portion. The first valve conduit includes a first control valve, and the second valve conduit includes a second control valve. The fluidic distribution system includes a first fluidic conduit and a second fluidic conduit. The controller is operatively connected to the fluidic supply system, and the first and second control valves.

Valve for a system for applying a covering product, including projecting or recessed shapes on a peripheral part, configured to cooperate with projecting or recessed shapes of a dedicated mounting and dismounting tool, these projecting or recessed shapes of the valve being configured to transmit a rotational movement to the valve, and to be secured to the tool. The projecting or hollow shapes of the valve include a first peripheral profile having at least one planar surface, and a second peripheral profile located behind the first profile relative to an outer end of the valve. The second profile has at least one first planar surface aligned with the planar surface of the first profile, and at least one second planar surface angularly offset relative to the planar surface of the first profile, such that the second planar surface of the second profile forms a shoulder relative to the first profile.

A valve for a bathroom or kitchen hand shower is described including—a body of the valve; —an inlet for the water into the body of the valve; —at least one outlet for the water out of the body of the valve, —a closing body inside the body of the valve; —an actuation device for shifting the closing body along a first axis between at least one closing position of a fluid path between the inlet and one of said at least one outlet and an opening position of the fluid path between the inlet and said at least one of said at least one outlet; —an actuator button outside the body of valve associated with the actuation device. The actuation device includes a cam located in the body of the valve and a stepwise advancement mechanism located outside the body of the valve and operatively associated with the cam, the cam being associated with the closing body of the valve and the advancement mechanism advancing by one step upon each next shift of the actuator button from a release position to an actuation position, by moving the closing body between the closing and opening positions, —an elastic return system is operative between the actuator button and the body of the valve and between the actuator button and the advancement mechanism, to return the actuator button from the actuation position to the release position and to reposition the advancement mechanism for a next step.

A liquid dispensing valve for dispensing of liquid solution, the liquid dispensing valve operable to create a vacuum buildup of pressure, such that the liquid moves on a recirculation path from the intake port to the output port. The recirculation of the liquid prevents sediment within the liquid from settling, and further prevents backpressure, and allows for continuous recirculation of the solution through a suction return line, providing generally consistent flow of liquid. The liquid dispensing valve's ability to minimize sediment buildup allows for a quick cleaning of the lines while also minimizing potential contamination of the general area.