Fluid flow control devices and related systems and methods may include a body or housing and a plug at least partially positioned in the body or housing to define a flow path. In a position of the plug, the plug and the body or housing may collectively define a fluid flow path.

A fluid control valve includes a valve housing having a fluid inlet and a fluid outlet. A valve body is disposed within the valve housing and is transitional relative to the valve housing between an open position and a closed position. In the closed position, the valve body prevents fluid flow between the fluid inlet and the fluid outlet. The valve body is incrementally transitional from the closed position to the open position to incrementally increase the amount of fluid flow from the fluid inlet to the fluid outlet. A flow control element is positioned within the valve housing downstream of the valve body. The flow control element includes a peripheral body and an inward body having a plurality of flow control passageways extending therethrough. The flow control element additionally includes an opening defined collectively by the peripheral body and the inward body.

A ball for a hydraulic component comprises a spherical body provided with at least one first through channel, which extends along a first axis; and at least one flow changer element arranged along the first through channel.

A ball valve (10) is described comprising a valve body (12) in which an axial channel (14) for the unidirectional flow of a fluid is obtained. The axial channel (14) extends between an inlet port (11) and an outlet port (13) for the fluid, wherein the ports are axially aligned with the axis of the axial channel (14). The valve is provided with a motorized actuator (20) for adjusting the position of the fluid adjusting ball (15) and comprises a head block (17) for installing the motorized actuator (20) on the valve body (12). The head block (17) includes at least one stem (21) for rotating the ball (15). The valve body (12) has a first window (26) whose axis is coincident with the axis of rotation of the ball (15) and at least one second window (27) whose axis is coincident with the axis of rotation of the ball (15). The first and second windows (26, 27) are symmetrically made in opposite parts of the valve body (12) with respect to the axis of the axial channel (14) and have the same shape and size to receive, on one side, the head block (17) on the valve body (12) and, on the opposite side of the valve body (12), a covering element (18). The head block (17) has an engaging portion (71) having shape and size adapted to allow it to be inserted into the first window (26) or into the second window (27).

A ball valve trim apparatus for high differential pressure service that is resistant to erosion includes elements selected from a plurality of stacked impedance trim plates positioned in the passage of the ball portion of the valve; the plates being independently adjustable along transverse axes that are parallel to the axis of rotation of the ball: one or more of the plates having a convex upstream contour, each plate provided with a predetermined pattern of variously sized fluid passageways, the pattern varying from plate-to-plate in the stack; erosion-resistant bushings inserted into the trim plate holes can be independently rotationally adjustable to control the rate of the flowing fluid, the upstream surface of the plate surrounding the orifice of the bushing defining a raised toroidal body.

A flapper assembly for an aspirator system includes a flapper plate and a valve assembly. The flapper plate defines a first plurality of apertures. The valve assembly includes a first valve plate disposed over the first plurality of apertures and a first pressure relief assembly arranged to move the first valve plate relative to the flapper plate.

A valve device includes: a valve housing having a valve passage connected with an air flow passage; a valve disk rotatably disposed inside the valve housing through a valve driver and changing air flow cross-section of the valve passage; and a porous member installed at the valve disk and positioned in an open section between the valve disk and the valve passage.

A mixing assembly comprises a tubular member and a spherical body disposed within a portion of the tubular member. The spherical body has a central volume, and a wall defined by an outside diameter and an inside diameter. The spherical body includes an inlet side and an outlet side, and a plurality of channels formed in each of inlet side and outlet side. The channels are oriented toward a center of the central volume.

A valve may include: a valve body; a valve member in the body, movable between closed and open, comprising a first orifice, a second orifice, a main conduit between them, and a bypass in fluid communication with the main conduit. The bypass includes a first portion with a first cross-section area and a second portion with a second cross-section area different from the first cross-section area. The valve body comprises a compensation chamber having a compensation orifice. The bypass comprises an outer bypass orifice defined by and disposed on the outer surface of the valve member. The valve member comprises an internal orifice situated between the bypass and the main conduit. In the closed position, the inlet is in fluid communication with the compensation chamber via the outer bypass orifice, the bypass, the internal orifice of the valve member, the main conduit, the first orifice, and the compensation orifice.

A flow restrictor is provided for a plug valve. The flow restrictor includes a restrictor body configured to be at least one of held within an internal bore of a valve body of the plug valve or mounted to the valve body in fluid communication with the internal bore. The restrictor body includes a plurality of fluid passages extending through a length of the restrictor body. The fluid passages include turns such that the fluid passages define tortuous fluid paths through the restrictor body.