Valve trim and related methods are described. An example valve trim includes a cage defining a body having a bore to receive a valve plug. The cage includes a first passageway through a side surface of the body. The first passageway has an axis that is non-parallel relative to a longitudinal axis of the bore. A valve seat is to receive the cage. The valve seat has a first projection defining a first opening. The cage to be positioned relative to the valve seat in a first orientation to align the first opening and the first passageway to provide a first flow characteristic. The cage to be positioned relative to the valve seat in a second orientation to offset an alignment between the first projection and the first passageway to provide a second flow characteristic different than the first flow characteristic.

Gate valve (1) with a valve casing (4) and a closing body (3) arranged longitudinally movably in the valve casing (4). An inlet channel (5) and an outlet channel (6) are formed in the valve casing (4). The closing body (3) via longitudinal movement cooperates with a valve seat (8) formed in the valve casing (4) and hence opens and closes a hydraulic connection between the inlet channel (5) and the outlet channel (6). The inlet channel (5) and the outlet channel (6) are each formed as a spiral.

The present invention proposes a balancing valve, a fluid network with such a balancing valve, and a method of maintaining such a balancing valve. The balancing valve comprises a housing having a main fluid passage extending along a main flow axis, a valve body disposed within the housing in the fluid passage, wherein the valve body has a first through hole forming a first fluid passage with a variable first fluid passage cross section. The valve body has a second through hole distinct from the first through hole and forming a second fluid passage in the valve body. The first fluid passage is a main fluid passage and the second fluid passage is a by-pass passage.

A solenoid includes a coil configured to generate magnetic force when a current flows therethrough; a stator core provided inside the coil, the stator core being configured to be excited by the magnetic force of the coil; a plunger received in a plunger chamber formed inside the stator core, the plunger being configured to move toward an attraction part in the plunger chamber by the magnetic force of the coil; a shaft provided to be able to move, together with the plunger, along axial direction; and a filter provided inside the stator core. The filter is provided on a side of the attraction part from the plunger and in an axial range where the coil is provided.

A solenoid includes a coil configured to generate magnetic force when a current flows therethrough; a stator core provided inside the coil, the stator core being configured to be excited by the magnetic force of the coil; a plunger received in a plunger chamber formed inside the stator core, the plunger being configured to move toward an attraction part in the plunger chamber by the magnetic force of the coil; a shaft provided to be able to move, together with the plunger, along axial direction; and a filter provided inside the stator core. The filter is provided on a side of the attraction part from the plunger and in an axial range where the coil is provided.

A pump housing has a main oil passage, a return oil passage provided substantially in parallel with the main oil passage, and a valve insertion hole extending across the main oil passage such that a closed fore end of the valve insertion hole reaches in the vicinity of the return oil passage. The valve insertion hole has a female screw formed at an open end thereof, and a through-hole is formed in the pump housing, having one end connected to the valve insertion hole at a portion adjacent to the closed fore end thereof and an opposite end opened to the outside of the pump housing. With the valve insertion hole thus provided, a temperature sensitive valve mechanism can be readily inserted in the valve insertion hole at any time.

A pump housing has a main oil passage, a return oil passage provided substantially in parallel with the main oil passage, and a valve insertion hole extending across the main oil passage such that a closed fore end of the valve insertion hole reaches in the vicinity of the return oil passage. The valve insertion hole has a female screw formed at an open end thereof, and a through-hole is formed in the pump housing, having one end connected to the valve insertion hole at a portion adjacent to the closed fore end thereof and an opposite end opened to the outside of the pump housing. With the valve insertion hole thus provided, a temperature sensitive valve mechanism can be readily inserted in the valve insertion hole at any time.

A multistage stacked disk choke includes a housing having a high pressure inlet port and a low pressure outlet port, an assembly, a cage, a seat, and a plug. The assembly includes: a tubular inlet port, a galley intersecting the tubular inlet port, a tubular outlet port, and a bore inward from the tubular outlet port. The cage has an inlet port in communication with the tubular inlet port. The seat is configured to support the assembly. The plug moves inside the assembly bore and restricts flow through the tubular outlet port and/or the tubular inlet port. Operation fluid flows from the high pressure inlet port through the cage inlet port into the tubular inlet port and is redirected into the galley and into the tubular outlet port into the bore of the assembly to a bore in the seat, and out through the low pressure outlet port.

A choke includes a cage having a plurality of openings extending therethrough, a first fluid port and a second fluid port, the openings in the cage fluidly interposed between the first and second fluid ports, and a selectively positionable blocking member positioned with respect to the openings to selectively overlie all of a portion of the openings, wherein the surface of the opening extending through the cage are a single crystal material. The single crystal material may be provided as an insert, having an opening therethrough, secured in position with respect to the cage.

A valve controller configured to operate on a Foundation Fieldbus Network and including a spool valve movable between at least an opening position and a closing position, and a flapper nozzle pilot valve arranged to move the spool between the opening position and the closing position.