A valve is provided for use with liquid chromatography where liquid is provided to the chromatographic analysis equipment at more than one pressure, including up to ultra-high pressures. High and higher pressure operation are provided by application of force by an internal spring while avoiding wear of components by permitting higher pressure operation by mechanical engagement of an internal element to cause the internal spring to increase the force applied to the rotor, without the addition of external additional loading in the high pressure operation.

The present invention relates to the field of sanitary ware technologies, and discloses a push-pull valve element, including a housing, a base connected to the housing, a fixed porcelain piece, a movable porcelain piece and a switching assembly. A cavity and a mounting hole are set on the housing. A water inlet runner I, a water inlet runner II and a water outlet runner are set on the base. A switching slot is formed in one side of the movable porcelain piece. The switching assembly is set in the mounting hole and is connected to the movable porcelain piece. The switching assembly may control the movable porcelain piece to move, so as to control a communication area among the water inlet runner I, the water inlet runner II and the switching slot. Therefore, the push-pull valve element is more practical in use.

A fluid control valve includes: a sleeve in a bottomed cylindrical shape, including an inlet, communication ports, an inner peripheral surface, and an inflow annular groove recessed from the inner peripheral surface in a region facing the inlet; a spool slidably disposed on the inner peripheral surface in the sleeve to open and close the communication ports; a C-shaped leaf spring formed by bending a leaf spring into an annular shape with two ends facing each other to form a notch and disposed in the inflow annular groove capable of being contracted in diameter to open and close the inlet; and a restricting part provided on the sleeve for restricting diameter contraction of the C-shaped leaf spring beyond a predetermined inner diameter and for restricting a position of the notch in a region away from the inlet.

Disclosed is a pressing-controlled mixing valve core with through flow control type on the top, having a shell body, a rotational inner shell, a water guide base, fixed and moving ceramic chips, a flow adjustment top seat and a pressing-controlled lifting actuator. By changing the rotation angle of the moving ceramic chip, its mixed water adjustment hole has different communication states to the guide holes of the fixed ceramic chip, so as to adjust the mixture state of the inlet water flow. Through a pressing action by the user, the water control rod head on the lifting shaft of the actuator will have rising and descending positions inside the vertical through hole and through flow passage of the flow adjustment top seat, so as to change the sectional area of the water flow in the through flow passage and adjust the output water flow of the pressing-controlled mixing valve core.

Disclosed is a pressing-controlled mixing valve core with through flow control type on the top, having a shell body, a rotational inner shell, a water guide base, fixed and moving ceramic chips, a flow adjustment top seat and a pressing-controlled lifting actuator. By changing the rotation angle of the moving ceramic chip, its mixed water adjustment hole has different communication states to the guide holes of the fixed ceramic chip, so as to adjust the mixture state of the inlet water flow. Through a pressing action by the user, the water control rod head on the lifting shaft of the actuator will have rising and descending positions inside the vertical through hole and through flow passage of the flow adjustment top seat, so as to change the sectional area of the water flow in the through flow passage and adjust the output water flow of the pressing-controlled mixing valve core.

A stepper motor driven actuator system is provided. The system includes a stepper motor, a cam, and a gearbox system. The gearbox system operatively connects the stepper motor to the cam. The cam rotates in response to stepping of the stepper motor. The system also includes a valve having a control piston located therein. The control piston is configured to translate in response to rotation of the cam. The system further includes a rotary actuator. The rotary actuator is fluidly connected to the valve, and the rotary actuator is configured to rotate the cam in response to translation of the control piston.

Disclosed is steering drive device for a pressing-controlled valve core, the steering drive device including a fixed top frame, a lifting drive rod, a vertical guide column, a lifting receiving seat, a fork-shaped swinging member, and a steering linkage. The steering linkage has an end that swings laterally when being moved, and the laterally swinging end is provided with a through hole for the fork-shaped swinging member to drive the swing arm, and cause the horizontal post to axially slide. The vertical cross-section of the through hole is rectangular, and the drive horizontal column has a range of up and down movement space in it, so that, when the drive swing arm generates lateral displacement due to vertical swing, it will pull the steering linkage along a circular path laterally moving, and at the same time drives the valve to rotate the actuating seat and cause it rotate laterally.

A valve apparatus comprising a push button assembly coupled to a pressure balance valve, wherein the push button assembly comprises a pushbutton configured to be pressed/released and to be rotated, a first press/release of the button opens the valve, a second press/release of the button closes the valve, and a rotation of the button adjusts water temperature. A push button assembly comprising an axial press/release on/off function and an independent rotary setting function.

A valve device includes a washing inlet, outlets, a switching inlet, a movable switching member, and a conversion engagement portion. The outlets is configured to be in communication with the washing inlet. The movable switching member is movable in a linear direction based on a pressure of a fluid that is fed to the switching inlet. The conversion engagement portion converts linear movement of the movable switching member into a rotation of a predetermined angle. The valve device is configured to switch which of the outlets is in communication with the washing inlet in accordance with a rotation angle of the movable switching member

A stepper motor driven actuator system is provided. The system includes a stepper motor, a cam, and a gearbox system. The gearbox system operatively connects the stepper motor to the cam. The cam rotates in response to stepping of the stepper motor. The system also includes a valve having a control piston located therein. The control piston is configured to translate in response to rotation of the cam. The system further includes a rotary actuator. The rotary actuator is fluidly connected to the valve, and the rotary actuator is configured to rotate the cam in response to translation of the control piston.