Disclosed are a valve capable of preventing a vortex and a core used therefor. The plastic valve comprises: a body made of plastic; a core formed inside the body; and an opening/closing portion. A fluid transfer hole is formed in the inner space of the core such that a fluid moves therethrough. The opening/closing portion contacts one end of the core through a hole of the body, when the valve is closed, thereby blocking the movement of the fluid. At least a part of the portion of the inner surface of the core, which corresponds to the fluid transfer hole, adjacent to the hole of the body, or at least a part of the portion of the core, which contacts the opening/closing portion, has a curved shape.

A valve strainer basket of an interceptor-type or control-type steam valve is removed from its nested orientation within a counter bore and valve rim of the valve casing. A strong back beam straddles the casing rim over the strainer basket. It is coupled to the strainer basket, such as by engagement of threaded rods into threaded apertures formed in the strainer basket rim. Biasing cylinders, such pressurized fluid cylinders or screw jacks, are interposed between the casing rim and opposite ends of the strong back beam. When the biasing cylinders are actuated, the strong back beam rises, lifting and separating the strainer rim from its nested engagement with the counter bore of the valve casing.

A mechanical joint includes a main body having an interior surface, an exterior surface, an inlet end, and an outlet end, the interior surface defining a fluid path from the inlet end to the outlet end, the interior surface defining a pipe seat proximate to a one of the inlet end and the outlet end, the pipe seat having a pipe seat stop surface facing towards the one of the inlet end and the outlet end; and a lining engaging the interior surface and covering at least a portion of the pipe seat stop surface of the pipe seat.

Example valve bodies having resistant inner cores are disclosed herein. An example method includes forming a monolithic inner core of a valve body using a first material. The monolithic inner core defines a flow path of the valve body. The monolithic inner core has a thickness that varies between a first wetted portion of the flow path and a second wetted portion of the flow path different than the first wetted portion. The monolithic inner core provides erosion and corrosion resistant characteristics against process fluids. The method further includes overmolding an outer shell of the valve body to the monolithic inner core, the outer shell including a second material different than the first material.

A valve comprises a hand wheel, a locking operation member inserted in a space of the hand wheel and a fixing locking member. The valve is locked when the locking operation member is combined with at least partial of the fixing locking member, the valve is unlocked when the locking operation member is separated from the fixing locking member, the locking operation member rotates in response to rotation of the hand wheel while the locking operation member is inserted in the hand wheel, and the fixing locking member is used for locking of the valve with fixed.

A method of manufacturing a fluid-handling component includes forming a liner via an additive manufacturing process and forming a body about the liner via a powder compaction process. The body may be coupled to the liner via diffusion bonds during the powder compaction process. The fluid-handling component may be constructed for use in a mineral extraction system.

A method of manufacturing a fluid-handling component includes forming a liner via an additive manufacturing process and forming a body about the liner via a powder compaction process. The body may be coupled to the liner via diffusion bonds during the powder compaction process. The fluid-handling component may be constructed for use in a mineral extraction system.

A method of manufacturing a body of a fluid control apparatus using additive manufacturing, the method including forming an inner wall having an outside surface and an inside surface, an area surrounding an inlet, an area surrounding an outlet, and an area surrounding a fluid flow path, wherein the inner wall provides a fluid boundary and connects the inlet and the outlet. The method further including forming a portion of the inner wall that receives a valve seat, forming a portion of the inner wall that receives a control stem and a control element, and forming a lattice structure by depositing a solidifiable material onto the inner wall in a predetermined pattern, wherein the lattice structure is three-dimensional and includes a plurality of connected lattice members.

A valve (18.1) includes a first and second port (50, 52) connected by a flow path to allow medium containing solid particles to pass therethrough. The valve also includes a valve seat (61), a closure unit (62), and a cavity (85) configured to receive at least part of the closure unit. The closure unit further comprises (i) a barrier piston (74) inhibiting the flow of solid particles from the second port when the closure unit is in its closed position; (ii) a bleed passage connecting the cavity with the second port to provide a pressure balancing arrangement that reduces a pressure therebetween, and (iii) a downwards sloping top extending from a central portion of the barrier piston to the outer surface of the barrier piston to permit fine particles in the cavity to settle through the bleed passage towards the second port.

A valve (18.1) includes a first and second port (50, 52) connected by a flow path to allow medium containing solid particles to pass therethrough. The valve also includes a valve seat (61), a closure unit (62), and a cavity (85) configured to receive at least part of the closure unit. The closure unit further comprises (i) a barrier piston (74) inhibiting the flow of solid particles from the second port when the closure unit is in its closed position; (ii) a bleed passage connecting the cavity with the second port to provide a pressure balancing arrangement that reduces a pressure therebetween, and (iii) a downwards sloping top extending from a central portion of the barrier piston to the outer surface of the barrier piston to permit fine particles in the cavity to settle through the bleed passage towards the second port.