An adjustment device designed to adjust a flow rate of a fluid flowing in a duct, including a body in which an adjustment valve is mounted, movable in rotation about an adjustment axis, the body having an area upstream of the adjustment axis and a downstream area opposite to the upstream area with respect to the adjustment axis, where the adjustment axis is equipped with connecting means which cooperate with at least one first control member positioned in the downstream area and a second control member positioned in the upstream area.

A valve position indicator for a valve includes a spline barrel, indicator flag, and follower. The spline barrel may be generally tubular and may be positionable about a tail stem protector of the valve. The spline barrel may have a helical slot formed therein. The spline barrel may be rotatably coupled to the tail stem protector of a valve. The indicator flag may be coupled to the spline barrel and may extend radially therefrom. The follower may be coupleable to a tail stem of the valve. The follower may extend in a direction perpendicular to the extent of the tail stem. The follower may extend through a slot in the tail stem protector and the helical slot of the spline barrel when the spline barrel is positioned about the tail stem protector.

An actuator for controlling a flow regulation device. The actuator includes a drive device coupled to the flow regulation device and a motor coupled to the drive device and operable to move the drive device. The actuator further includes a processing circuit configured to receive a first measurement of a characteristic, control the actuator to reposition the flow regulation device in a first direction, receive a second measurement of the characteristic, determine an installation error associated with at least one of the actuator and the flow regulation device based on the first measurement and the second measurement.

A pressure gauge and/or relief valve which may be used in a single-use fluid system, such as a sterilizable fluid system. The pressure gauge and/or pressure relief valve may be formed of a disposable and/or sterilizable material, such as a non-metallic (e.g., polymeric) material. The material of the pressure gauge and/or pressure relief valve may be compatible with the material of a fluid-containing structure of the fluid system, such as to be bonded (e.g., welded) therewith. The fluid-containing structure may be retrofitted to integrate the pressure gauge and/or pressure relief valve therewith. The pressure gauge and/or pressure relief valve may have a simple configuration, such as a housing with a movable element therein. The movable element moves with respect to the housing to indicate pressure and/or to relieve pressure from within the housing and/or fluid-containing structure.

An adjustable rotary flow valve, comprising: a body; an upstream port; a downstream port; a rotary disc comprising a water flow opening; a rotating mechanism couple with the rotary disc and configured to move the water flow opening past a plurality of channels in a flow of water from the downstream port to the upstream port so as to variably restrict the flow; dial graduations that illustrate a plurality of flow percentage; and a dial couple with the rotating mechanism and configured to illustrate via the dial graduations the current flow percentage based on a position of the rotary disc.

A ball valve assembly includes a ball element arranged to be rotated by rotation of a shaft in engagement with the ball element, the ball element having first and second flow channels defined therethrough, a first inlet port at a first end of said first flow channel, a first outlet port at a second end of the first channel, a second inlet port at a first end of the second flow channel and a second outlet port at a second end of the second channel.

A valve stem for use in a fluid flow control valve having a valve body configured to receive a portion of the valve stem and to enable the valve stem to selectively rotate within the valve body between a fully-open position, where fluid is permitted to flow through the fluid flow control valve, and a fully-closed position, where fluid is prevented from flowing through the fluid flow control valve. The valve stem includes an elongate valve stem arm having a first end and a second end and a valve stem head integrally formed with and fixedly attached to the second end of the valve stem arm. The valve stem head includes a fluid inlet formed in the valve stem head, and a fluid outlet formed in the valve stem head, and a fluid passage that directs fluid from the fluid inlet, through the valve stem, and out of the fluid outlet.

A flow control smart valve and a flow control system using the same, including an opening/closing unit disposed inside a flow path and selectively passing a fluid, and a drive unit coupled with the opening/closing unit to control a position of the opening/closing unit in the flow path.

An open/closed display handle for rotating a spindle of an open/closed valve mechanism of a valve device includes a handle main body having a handle-side gear that rotates about an axis of the spindle, a rotary display body having an open/closed display portion that displays an open/closed valve state and a display body-side gear, and a rotary fixed body that pivotally supports planetary gears. The planetary gears, the handle-side gear, and the display body-side gear form a differential rotation mechanism, and a visual recognition restricting body that covers the rotary display body and has openings that open to allow a portion to be displayed of the open/closed display portion to be visually recognized from an outside and a transparent cover body that covers an entire outer side of the visual recognition restricting body and is translucent to allow visual recognition from an outer side form the handle main body.

The actuator includes a control unit configured to allow a first control capable of driving a drive part with a first driving force and a second control capable of driving the drive part with a second driving force which is stronger than the first driving force, a moving part configured to move in a predetermined direction, an elastic member configured to receive at least one of the first driving force and the second driving force from the drive part and to supply a force for the moving part to move to the moving part, and a detection unit configured to supply a detection signal for detecting a stop of the drive part to the control unit, in which the control unit performs the second control when a stop of the drive part is detected after performing the first control.