A valve apparatus may include a control valve including valve body having an inlet, an outlet, and a flow path. A rotational valve stem may extend along a longitudinal axis, the valve stem having a top portion and a bottom portion, the valve stem operatively coupled to a control element movably disposed in the flow path. A yoke may be attached to the valve body and arranged to operatively couple the valve body to an actuator, the yoke including a first bracket having an aperture and a second bracket having an aperture. A bushing may be arranged to align an actuator shaft of the actuator to the longitudinal axis of the valve stem, the bushing having a first portion and a second portion, the first portion engaging within the aperture of the first bracket and the second portion engaging the aperture of the second bracket.

A valve assembly for a fluid flow management control and leak detection and conservation system, the valve assembly is positioned within a valve well and includes a cam block, valve liner, valve body, spring, shaft, and cover. The cam block, valve liner, and valve body each include a plurality of projections for cooperating with each other to allow rotation of the valve body while preventing rotation of the valve liner. The valve body and valve liner each include opposing pairs of openings for opening and closing the valve assembly. The valve assembly when in an open position allows fluid to flow through the openings of the valve body and valve liner and when closed the sidewall of the valve body presses firmly against the sidewall of the valve liner to form a seal therebetween ceasing all fluid flow.

The disclosed technology includes pumps, pipes, valves, seals, and systems for pumping and controlling high temperature fluids, such as liquid tin, at temperatures of between 1000-3000 C. The systems and device may be partially or entirely constructed using brittle materials, such as ceramics, that are capable of withstanding extreme heat without significantly degrading, and may be secured using components made of refractory metals, such as tungsten. The systems and devices may utilize static and dynamic seals made from brittle materials, such as graphite, to enable the high temperature operation of such pumps, pipes, valves, and systems without leakage.

A fluid control system includes a choke valve having a first connector shaft; an actuator having a second connector shaft; a collar disposed around the first and second connector shafts; and a spring disposed on the first connector shaft. The collar may have an internal taper and a plurality of engagement pins.

A service valve for a valve body includes a base rotatable between an open orientation and a closed orientation relative to the valve body. When the base is in the open orientation, the service valve allows fluid flow into the valve body through the service valve. When the base is in the closed orientation, the service valve blocks the fluid flow into the valve body through the service valve. The service valve further includes a tab extending from the base. The tab prevents removal of a cover from the valve body when the base is in the open orientation.

A Centering Electronic Rotary Valve (CERV) includes a drive system and a rotor structure comprising a rotor fluid channel input opening communicated with a rotor fluid channel output opening via a rotor fluid directional channel that is moveable via a rotor shaft. The rotor fluid channel input opening is adjacent to and aligned with one of a plurality of stator input channel bottom opening. The rotor fluid channel output opening is adjacent to and aligned with at least one of the plurality of stator output channel bottom openings. The drive system includes a motor and a microprocessor for (i) controlling the rotor shaft to rotate about an axis M and (ii) for positioning the rotor shaft at a defined circumferential position.

A Centering Electronic Rotary Valve (CERV) includes a drive system and a rotor structure comprising a rotor fluid channel input opening communicated with a rotor fluid channel output opening via a rotor fluid directional channel that is moveable via a rotor shaft. The rotor fluid channel input opening is adjacent to and aligned with one of a plurality of stator input channel bottom opening. The rotor fluid channel output opening is adjacent to and aligned with at least one of the plurality of stator output channel bottom openings. The drive system includes a motor and a microprocessor for (i) controlling the rotor shaft to rotate about an axis M and (ii) for positioning the rotor shaft at a defined circumferential position.

A process control valve can include a valve body having a fluid inlet, a fluid outlet and a valve seat disposed fluidically between the fluid inlet and the fluid outlet; a valve stem having a longitudinal axis, a first end and a second end longitudinally opposite the first end; and a valve member disposed within the valve body and configured to selectively sealingly engage the valve seat for controlling fluid flow through the valve. The first end of the valve stem can be disposed at least partially within the valve body and can be operably coupled to the valve member for controlling a position of the valve member relative to the valve seat. The valve member can be configured to resist blowout of the valve stem.