Fluid valves with an anti-stagnation trim guide are disclosed herein. An example valve includes a valve body including a fluid inlet, a fluid outlet, and a fluid passageway extending between the fluid inlet and the fluid outlet, a plug disposed in the fluid passageway, and a trim guide positioned between the plug and the valve body, the trim guide including at least one balance passageway, the balance passageway to guide trapped process fluid to enter or exit an area between the plug and a bonnet of the valve during movement of the plug.

The present invention relates to a valve for a system for spraying a cleaning liquid, said valve comprising: —a valve body including a hydraulic cavity configured to be fluidically connected to a hydraulic channel of the spray system and intended to receive the cleaning liquid, —a plunger configured to be displaced in the hydraulic cavity between an open position, in which it allows the cleaning liquid to enter the hydraulic channel, and a closed position, in which it prevents the passage of the cleaning liquid through the hydraulic channel, —a compressible elastic element containing a gas disposed in the hydraulic cavity and configured to be compressed if the cleaning liquid in the valve freezes.

A valve device includes a body, a solenoid valve, and a manual valve mounted to the body. The manual valve being configured to open and close the gas flow channel via a manual operation. The gas flow channel includes a first flow channel including the valve-side opening portion, and a second flow channel including the tank-side opening portion, and includes an intersection portion in which a first center axis that is a center axis of the first flow channel and a second center axis that is a center axis of the second flow channel intersect with each other. A center axis of the solenoid valve coincides with an extension line of the first center axis and a center axis of the manual valve coincides with an extension line of the second center axis.

The present disclosure relates to an air supply valve having a backflow prevention function and a valve module, for preventing backflow of air or gas through an outlet. The air supply valve includes a housing that includes a motor mounted therein and in which a supply flow path and an outlet of air are formed, a driver including a gear part for transmitting driving force of the motor and a converter for converting rotation of the gear part to linear motion, and a valve module that is coupled to an end of the converter and is opened while being spaced apart from the outlet of the housing to be connected to the supply flow path or is closed while being in contact with the outlet.

A valve (1) for fluids, preferably for gases, comprises an inlet passage (2); an outlet passage (3); a shutter (4) interposed between the inlet passage (2) and the outlet passage (3) and movable between an open position and a closed position; actuating means (26,27). The valve (1) also comprises actuating means (26,27) operatively active on the shutter (4), which comprises an electromagnet (26) and a ferromagnetic element (27) that is movable as a function of the field generated by the electromagnet (26) for displacing the shutter (4) along the movement direction (L). In particular, the actuating means comprises a tubular body (5) made of non-magnetic material in which the ferromagnetic body (27) is inserted.

The invention relates to a fuel cell system (200) having a valve (10) in a valve housing (50), the valve (10) having: a) a drive unit (12), b) an elongate rotor (20) with a first rotor section (21) and a second rotor section (22), the second rotor section (22) having: I. a first radially circumferential projection (31), II. a second radial projection (36), which is spaced at a distance (d1) from the first radially circumferential projection (31) and has at least one opening (39) for the passage of the fluid of the fluid source (102), c) a main valve plate (60) which is movably mounted on the second rotor section (22) and has a rotor hole (62).

A valve assembly (6000) for use with a valve body (7000) having a valve seat (7112) is disclosed, the valve assembly (6000) comprising: a cartridge (6200) threadably engaged with and extending away from the valve body (7000); a poppet (6500) slidably engaged with the cartridge (6200); a plate (6600) engaged with the poppet (6500); a plunger (6400) slidably engaged with the cartridge (6200) and slidably extending through the plate (6600); and a retainer (6450) captured between the plate (6600) and a surface of the poppet (6500), wherein the retainer (6450) is threadably engaged with the plunger (6400). The valve assembly (6000) can regulate fluid flow.

A bypass valve assembly for a turbine generator includes a valve body, bypass seats, valve stem, valve cap, bypass valve disc, bypass valves, and pressure seal head. The valve body defines a central bore and a plurality of passageways. Each passageway has an inlet smaller than its outlet. Each bypass seat is within the inlet of a corresponding passageway. The bypass seats have a higher wear resistance than the valve body. The valve stem is within the central bore. The valve cap is secured to the valve body. The bypass valve disc is secured to the valve stem. Each bypass valve has a base portion and a nose portion. Each nose portion defines a contoured surface area with a wear coating and extends into a corresponding passageway. The pressure seal head is disposed around the valve stem and defines steps having a wear coating.

A valve system for controlling a corrosive process liquid flow, while avoiding corrosion due to a liquid/vapor interface of the process liquid, causes the process liquid to flow from the valve through a purge port into a vertical segment of a purge line. During valve initialization, a non-reactive gas backpressure within the purge line is controlled to establish the liquid/vapor interface at a desired height within the vertical segment, as determined by an interface level sensor, which can be ultrasonic. The vertical segment is constructed from, or lined with, a material that can withstand contact with the liquid/vapor interface. During valve operation, the non-reactive gas pressure can continue to be regulated, or a purge valve can be shut, trapping a fixed quantity of the non-reactive gas within the purge line. The valve can include a heater configured to prevent a molten process liquid from solidifying within the 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.