A fill valve system with a float nested in a container connected to the fill valve and a siphon device passing water out of the container into the toilet tank, with the siphon device having an air vent dimensioned such that: (i) tank refilling is delayed until after the flush valve closes; (ii) the fill valve is not turned on by small leaks in the tank; and (iii) the fill valve turns off when it encounters large leaks in the tank.

A fill valve system with a float nested in a container connected to the fill valve and a siphon device passing water out of the container into the toilet tank, with the siphon device having an air vent dimensioned such that: (i) tank refilling is delayed until after the flush valve closes; (ii) the fill valve is not turned on by small leaks in the tank; and (iii) the fill valve turns off when it encounters large leaks in the tank.

To provide a control valve with excellent durability performance without being restricted in terms of applications, such as usages under high pressures or high temperatures, as well as reduced generation of particles. A valve body forming an inflow passage and an outflow passage of a fluid; a valve seat formed at a peripheral edge of the inflow passage in the valve body; a diaphragm configured to connect and shut off the inflow passage and the outflow passage by coming into and out of contact with the valve seat; a diaphragm holder configured to press a central portion of the diaphragm; and an actuator configured to move the diaphragm holder are provided, includes a regulation mechanism configured to adjust a closing pressure generated between the valve seat and the diaphragm to a predetermined pressure.

A valve includes a valve body with an inlet and an outlet coupled to a tubular conduit operable to circulate a flow of a process fluid, an actuator with an interior volume divided by a valve diaphragm into a first volume portion that encloses a working fluid and a second volume portion, and a plug coupled to the valve diaphragm and operable to move toward an open position or a closed position based on movement of the valve diaphragm relative to a pressure of the working fluid. A seal isolator is coupled to the tubular conduit and includes an isolator diaphragm having a first side exposed to the flow of the fluid and a second side fluidly coupled to the first volume portion through the working fluid. The isolator diaphragm is configured to transmit a pressure of the flow of the process fluid to the pressure of the working fluid.

A valve arrangement having a main valve and having a pilot valve which is provided for controlling the main valve and which is inserted into a pilot valve receptacle in an insertion direction, wherein, through closure of the pilot valve, a pressure is able to be built up within a pressure chamber which is closed off by a diaphragm, whereby a valve seat between a main valve inlet and a main valve outlet is able to be closed off. By opening the pilot valve, it is possible to set a release of pressure within the pressure chamber by water flowing away via an inflow, connected to the pressure chamber, of the pilot valve receptacle and via a pilot valve inlet, adjoining the latter and formed by a main body of the pilot valve. A pilot valve outlet, formed by the main body, and via an outflow, adjoining said pilot valve outlet, into the main valve outlet, opens into the main valve outlet on the outflow side of the diaphragm. The pilot valve inlet and the pilot valve outlet are arranged offset from one another along a longitudinal axis of the pilot valve.

A valve arrangement having a main valve and having a pilot valve which is provided for controlling the main valve and which is inserted into a pilot valve receptacle in an insertion direction, wherein, through closure of the pilot valve, a pressure is able to be built up within a pressure chamber which is closed off by a diaphragm, whereby a valve seat between a main valve inlet and a main valve outlet is able to be closed off. By opening the pilot valve, it is possible to set a release of pressure within the pressure chamber by water flowing away via an inflow, connected to the pressure chamber, of the pilot valve receptacle and via a pilot valve inlet, adjoining the latter and formed by a main body of the pilot valve. A pilot valve outlet, formed by the main body, and via an outflow, adjoining said pilot valve outlet, into the main valve outlet, opens into the main valve outlet on the outflow side of the diaphragm. The pilot valve inlet and the pilot valve outlet are arranged offset from one another along a longitudinal axis of the pilot valve.

A flow regulating switch valve includes a valve core that includes a switch assembly configured to drive a diaphragm assembly to open or close a water outlet, and also includes a flow regulating assembly that comprises a rotating ring, a sliding block, and a magnet. A control key is configured to control the switch assembly. The rotating ring is connected to the control key and includes an inclined plane that transitions from high to low and is configured to drive the sliding block to slide up and down such that the sliding block drives the magnet to move up and down. The magnet is configured to control the diaphragm assembly to regulate a size of the water outlet.

A flow regulating switch valve includes a valve core that includes a switch assembly configured to drive a diaphragm assembly to open or close a water outlet, and also includes a flow regulating assembly that comprises a rotating ring, a sliding block, and a magnet. A control key is configured to control the switch assembly. The rotating ring is connected to the control key and includes an inclined plane that transitions from high to low and is configured to drive the sliding block to slide up and down such that the sliding block drives the magnet to move up and down. The magnet is configured to control the diaphragm assembly to regulate a size of the water outlet.

Three-way valve drivable by a pump, switchable between at least two switch positions wherein a first port is selectively in fluid communication with a second port or with a third port. The three-way valve comprises a movable support and a pair of obstructing members carried by the movable support, at least one of which is responsive to the pressure applied by the pump at the first port, at least one of the movable support and obstructing members being movable due to transitions between an off-state and an on-state of the circulation pump. The obstructing members are adapted to engage reciprocatingly the respective seats of the three-way valve. The obstructing members are capable of changing shape synchronously when the pump switches from the off-state to the on-state.

A diaphragm assembly for a diaphragm valve is described, which has a diaphragm which includes a functional portion adapted to cooperate with further components of the diaphragm valve and to separate opposite chambers. The diaphragm further includes a tab projecting laterally from the functional portion and having a through-opening provided therein. A marking element is fastened in the through-opening. In addition, a diaphragm valve having such a diaphragm assembly is presented.