A process includes placing a nut around a valve cartridge, the valve cartridge comprising a valve stem. The process also includes aligning the valve stem with an engagement crown of a handle. The process also includes pressing the handle towards the nut after placing the nut around the valve cartridge and aligning the valve stem with the engagement crown, such that the valve stem is rotatably coupled to the handle through the engagement crown.

A thermostatic automatic faucet includes a faucet body, a solenoid valve, a human body sensor unit, and a water mixing valve. The water mixing valve is installed in the faucet body. An inlet end of the solenoid valve is in communication with a water mixing outlet of the water mixing valve. An outlet end of the solenoid valve is in communication with a nozzle of the faucet body. The human body sensor unit controls the solenoid valve to be opened and closed. The faucet is controlled to spray water or not by a sensor, and the water temperature can be adjusted. The safety and durability of the product are improved.

A control valve of a manual/automatic and cold/hot water faucet includes a sliding member, a linking member, and an operating member. The sliding member has a notch. The linking member is recessed with a connecting groove. The operating member has a valve stem and a linking portion. The linking portion drives the linking portion and the sliding portion through the connecting groove. The valve stem, the connecting groove and the central axis are arranged concentrically, so that the overlapping area of the notch and the cold water hole is equal to the overlapping area of the notch and the hot water hole to keep the same ratio of cold water to hot water in an automatic mode to dispense water, thereby increasing the safety in use.

A faucet includes a faucet body, a faucet spout and a spray pattern controller for providing a plurality of spray patterns. The faucet body includes a faucet handle that is movable with respect to the faucet body. The faucet spout has a first end extending from and integral to the faucet body. The spray pattern controller is located along a side of the faucet spout. The spray pattern controller is configured to adjust a spray pattern. The faucet spout may include at least first and second selectable outlets, and water flow through the outlets is selectably managed by the spray pattern controller to select a spray pattern from a plurality of spray patterns capable of being dispensed through the faucet spout.

Device and method are disclosed for transforming an angular movement changing linearly to a linear movement changing non-linearly with respect to the linear change of the angular movement. Embodiments of the device and method may be useful for on providing better and more accurate control of a user of the amount of fluid flowing from a faucet at the low flow rates. According to other embodiments a flow diversion plate is disclosed adapted to divert the flow entering the plate through one facet of the plate at a input location to an outlet opening diverted away from the input location by an angular diversion of between 90 to 180 degrees.

An automated liquid delivery system comprising: a housing defining an internal chamber, the housing comprising at least one delivery hole; a flow control valve inserted into the internal chamber and connectable to a source of liquid, the flow control valve for controlling a flow of liquid coming from the source of liquid; at least one pipe inserted into the internal chamber and connected to the flow control valve for delivering the liquid coming from the flow control valve through the delivery hole of the housing; a controller inserted into the internal chamber for controlling the flow control valve, the flow control valve and the controller being powerable by a battery insertable into the housing; and a cover securable to the housing for enclosing the flow control valve, the pipe, the controller and the battery therein.

A misoperation prevention structure of a two-handle faucet includes a faucet spout and two switching valves for controlling water to be delivered to the faucet spout. At least one of the two switching valves is equipped with a misoperation prevention mechanism. The misoperation prevention mechanism is configured to restrict the rotation of the handle of the switching valve and to release the restriction on the rotation of the handle of the switching valve. With the misoperation prevention mechanism, the switching valve won't be opened by mistake, thereby avoiding a waste of water resources and improving the safety of use.

A dual-handle and dual-control faucet includes a faucet body and a faucet spout, a mechanical control unit, a sensor control unit, a water flow sensor and a controller that are mounted to the faucet body. The controller detects whether the mechanical control unit is operated through the water flow sensor. When the mechanical control unit acts, the sensor control unit becomes inactive. The faucet has a mechanical control mode and a sensor control mode and is convenient to use.

A spray head contains: a shell and a waterway which includes a body, a side plate, and a spray face. The side plate covers on the body so as to define a first conduit, a second conduit, and a third conduit among which a water-diverting valve chamber is defined and accommodates a water-diverting valve, a button is connected with the water-diverting valve, a spring is fixed between the water-diverting valve and the water-diverting valve chamber, an aerator is mounted on the spray face which includes multiple spray nozzles. The body further includes a first cliff, a first fence, a first cavity, a first space, multiple first grooves, and multiple second grooves. The spray face includes a panel, a second cliff, and a second fence which has multiple locking tabs, wherein the second cliff has a second cavity, between the second cliff and the second fence is defined a trench.

A faucet having a body with a core securely mounted thereon and a handle rotatably mounted on top of the core is provided with a recoil mechanism sandwiched between the handle and the body to drive the handle back to its original position as well as slow down return of the handle. The recoil mechanism includes a positioning seat snugly mounted on top of the core and a restoring spring a free end of which is securely connected to the positioning seat and the other free end of which is adapted to securely connect to the handle to drive the handle back to its original position after the handle is rotated.