The disclosure discloses a switch configured to switch an on-off state of a liquid flow conduit to a working mode controlled by a mechanical valve when an induction control component is detected not to be in a working state. The disclosure further discloses an induction control box including the switch, and an induction faucet including: a faucet having a automatic switch mode and a manual switch mode; a sensor arranged on the faucet; a solenoid valve arranged on a water output path and connected with the sensor, wherein when the sensor and solenoid valve are in a working state, the faucet supplies water by automatic switch mode; and a switch configured to switch the faucet from the automatic switch mode to manual switch mode when the sensor and/or the solenoid valve are detected not to be in the working state.

A solenoid valve is formed by engaging locking protrusions with engagement holes and thereby joining a valve body and a magnetic cover to each other. A top wall of the magnetic cover is formed by a pair of bent portions that extend from a pair of respective sidewalls of the magnetic cover and that are bent toward the space between the sidewalls. The bent portions are fastened to each other in the width direction Wd by a circuit board spacer (first fastening member), and the circuit board spacer and the valve body are fastened to each other in the axial direction Ld by a connector cover.

A pump and valve combination for bladder adjustment is revealed and including a fluid supply member, a valve member and a bypass line. The fluid supply member includes a head end and a tail end. A bottom cover is disposed on the tail end and the fluid supply member provides fluid to the bottom cover through the tail end. The valve member is arranged at the head end and communicating with bladders. The valve member includes a valve cap fixed on the head end, a solenoid operated directional control valve, and an air supply tube. Two ends of the bypass line are connected to the bottom cover and an air input end of the air supply tube, respectively. An input portion and an output portion of the solenoid operated directional control valve are connected to an air output end of the air supply tube and the bladder respectively.

A solenoid valve having a valve housing in which a flexible diaphragm is accommodated, having a rocker for deforming the diaphragm, wherein a first orifice of a first fluid channel serves as a first valve seat against which the diaphragm is pressed in a sealing manner in the first functional position of the rocker and which valve seat is released by the diaphragm in the second functional position of the rocker, and further comprising a magnetic drive for moving a linearly movable armature part which is provided with an intermediate part for transmitting force to the rocker and which passes through the intermediate part, wherein the intermediate part is connected to the end region in a force-locking and/or substance-locking manner and/or is supported in a form-locking manner on an annular collar of a retaining part fixed to the end region in a force-locking or substance-locking manner.

This invention shows a type of dual-sensing basin faucet, includes the shell of faucet, the shell of this faucet is setting a valve seat with adjustment switch. The top of valve seat is connected to the cavity of water outlet and cavity of solenoid valve. There is the outlet tube inside the cavity of water outlet and a solenoid valve inside the cavity of solenoid valve. Both outlet tube and solenoid valve are setting inside the shell of this faucet. There is circuit board setting on the top of outlet tube, and the circuit board is electrically connected with the solenoid valve. There is a support plate that is setting above the circuit board and is firmly connected with the circuit board.

A pneumatic trip valve that may include a valve structure, a switch plate air path and an internal check valve. In various aspects, the pneumatic trip valve may be connected to a valve positioner, an actuator, or a combination thereof to control the operation of a fluid process control valve. In operation, the Pneumatic trip valve acts to put the actuator in a preset fail-safe position when the actuator loses sufficient pressure or communication from a main air supply, stored pressurized air from an actuator air reservoir, and/or an external air reservoir.

A solenoid valve is formed by engaging locking protrusions with engagement holes and thereby joining a valve body and a magnetic cover to each other. A top wall of the magnetic cover is formed by a pair of bent portions that extend from a pair of respective sidewalls of the magnetic cover and that are bent toward the space between the sidewalls. The bent portions are fastened to each other in the width direction Wd by a circuit board spacer (first fastening member), and the circuit board spacer and the valve body are fastened to each other in the axial direction Ld by a connector cover.

A double action directional fluid flow valve includes a stepped piston connected with a poppet valve and moveable by a controller between open and closed positions by applying a continuous pressure to a small diameter piston face and selectively applying and removing pressure from a large diameter piston face to move the poppet valve between an open position and a closed position.

A servo valve comprises a valve housing, a cavity formed in the valve housing and defining a longitudinal axis (X), and a member disposed in the cavity and axially-moveable therein, wherein the member comprises a portion with first and second cylindrical sections having a first diameter (R1, R2), a central section located between the first and second cylindrical sections and having a second diameter (R3), and first and second frusto-conical sections connecting the first and second sections to the central section and forming respective first and second frusto-conical surfaces. A plurality of ports, each form a fluid passage through the valve housing and have first and second nozzles with first and second nozzle openings.

A directional control valve includes: a housing having a cylindrical spool hole communicating with an inlet port letting a fluid from an external supply source at a predetermined pressure and an outlet port flowing the fluid to a working cylinder; a spool movable in the spool hole axially and changing an amount of flow of the fluid; a first solenoid driving section having a first needle coupled to or integral with a first end portion of the spool and driving the spool; and a second solenoid driving section having a second needle coupled to or integral with a second end portion of the spool and driving the spool, the directional control valve including a pressure equalization circuit equally applying a pressure to the end portions.