An acetal co-polymer valve body and/or spin ring in a solenoid operated dishwasher or washing machine valve has been found to reduce a likelihood of breaking when subjected to freezing and thawing conditions over the polypropylene and glass filled nylon components normally employed in the marketplace.

A magnetically-operable shutter assembly comprises a fixed core and a movable core which can be configured between a contact condition and a condition of the utmost mutual distance and further comprises an encapsulation body capable of simultaneously containing the fixed core and the movable core; the encapsulation body can be installed within a body of a complex functional assembly which is configurable at least in a hindrance configuration for a fluid flow and in an admittance configuration for said fluid flow through the complex functional assembly itself.

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.

The present invention discloses a solenoid valve for water capable of enhancing a electromagnetic suction force and an implementation method thereof. the method comprises: obtaining a plastic-sealed stator assembly by injecting plastic on a stator assembly, the plastic-sealed stator assembly; assembling the plastic-sealed stator assembly and a valve body assembly comprising a movable iron core together to form the solenoid valve for water; wherein the upper end face of the movable iron core at the initial position is set as not lower than the upper edge of lower magnetic conductive inner sleeve and not higher than ¼ of the distance from the upper edge of lower magnetic conductive inner sleeve to the lower edge of upper magnetic conductive inner sleeve, so as to enhance the electromagnetic suction force of the solenoid valve for water. The plastic-sealed stator assembly comprises a coil assembly; an upper magnetic conductive inner sleeve and a lower magnetic conductive inner sleeve mounted in a hole of the coil assembly; a water-isolating sleeve located inside the upper magnetic conductive inner sleeve and the lower magnetic conductive inner sleeve; a yoke located outside the coil assembly and connecting the upper magnetic conductive inner sleeves and the lower magnetic conductive inner sleeves; a magnetic conductive seat mounted on an inner side of the water-isolating sleeve; and a plastic-sealed layer covering the coil assembly and the yoke.

A proportional valve is provided that comprises an input port (3) and an output port (5), with a diaphragm (19) therebetween. A diaphragm plate (21) with a pilot orifice (31) formed therethrough is mounted to the diaphragm (19). The valve has a solenoid (7) comprising an armature (15) and a field winding (17), with the armature being movable in an opening direction in response to a magnetic field generated by the field winding. A spring assembly (13) is arranged to provide a biassing force to the armature (15) in its closing direction. In its closed position, the diaphragm plate (21) sits in a main orifice (20) between the input and output ports to block flow of fluid therebetween, with the armature (15) blocking the pilot orifice (31). Opening movement of the armature (15) opens the pilot orifice (31) to allow fluid to flow therethrough, in turn allowing the diaphragm plate (21) to move out of the main orifice (20) to create a gap allowing flow of fluid from the input port (3) to the output port (5). The diaphragm plate (21) and main orifice (20) are configured such that in at least the initial opening movement of the diaphragm plate, the rate of increase of the gap between them changes approximately linearly.

In the case of a valve-actuating device (1) having a first valve (3) and a second valve (38), it is provided to form, on the first valve (3), a pressure chamber (14), which can be filled with a pressure from a first inflow (16) via a filling opening (15), wherein the first valve (3) separates the first inflow (16), in a closed position, from a first outflow (19), and wherein the pressure chamber (14) can be emptied into the first outflow (19) via an outflow opening (18), and the outflow opening (18) can be opened and closed by a closure element which can be activated by an operating element (2).

A valve box for irrigation systems is described, comprising a box-shaped body closed by a lid, and a plurality of electrovalves contained in an inner compartment of said box-shaped body and adapted to allow a fluid from a supply conduit to flow towards a plurality of outlet conduits, each being controlled by an electrovalve. The valve box comprises a single programmable drive and control module of said electrovalves which is contained in a containment box releasably secured above said compartment.

The present invention is a flow-rate adjustable valve for adjusting a flow rate of liquid flowing through a flow path. The flow-rate adjustable valve includes: a rotatable member; a lifter linearly movable by a rotation of the rotatable member; a valve body linearly movable by a linear movement of the lifter; a stopper configured to restrict a movable range of the lifter in a fixed state of the stopper in which a position of the stopper is not able to be changed; and a stopper-holding member configured to hold the stopper selectively in the fixed state or in a provisional fixed state in which the position of the stopper is able to be changed.

The present invention is a flow-rate adjustable valve for adjusting a flow rate of liquid flowing through a flow path. The flow-rate adjustable valve includes: a main valve body; a back pressure chamber; an inlet hole; an outlet hole; a pilot valve body for opening and closing an end of the outlet hole on a side of the back pressure chamber; an elongated member holding the pilot valve body; and a lifter rotatable and also movable in the axial direction of the elongated member by the rotation of the rotatable member. The lifter and the elongated member are integrally movable in the axial direction. The elongated member is connected to the lifter under a condition in which the elongated member is biased to the lifter in a one-way direction of the axial direction by a biasing-connecting member.

The present invention is a flow-rate adjustable valve for adjusting a flow rate of liquid flowing through a flow path. The flow-rate adjustable valve includes: a main valve body movably supported in the flow path via a diaphragm membrane; a back pressure chamber; a plurality of inlet holes communicating the upstream side of the flow path with the back pressure chamber; an outlet hole communicating a downstream side of the flow path with the back pressure chamber; and a pilot valve body for opening and closing the outlet hole, wherein moments acting on the main valve body based on the liquid flowing into the back pressure chamber through the plurality of inlet holes are canceled by each other in total, under a condition in which the pilot valve body opens the outlet hole.