Abrégé

An improved hemi-wedge type valve is disclosed that has upstream and downstream sealing surfaces that cooperate with opposed surfaces on the hemi-wedge valve member. This results in improved sealing and less leakage, at both high and low pressures.

Classes IPC  ?

• F16K 1/16 - Soupapes ou clapets, c.-à-d. dispositifs obturateurs dont l'élément de fermeture possède au moins une composante du mouvement d'ouverture ou de fermeture perpendiculaire à la surface d'obturation à éléments de fermeture articulés à pivot

Abrégé

A rotatable wedge cartridge valve has a cartridge body defining a cartridge chamber of a defined internal width having flow ports in communication with the cartridge chamber. A rotatable wedge valve cartridge assembly is removeably positioned within the cartridge chamber and has a controllable width. A core member defines a flow passage and has a spherical outer surface portion. A valve seat is located within the cartridge chamber. A rotatable wedge valve member is mounted for rotation relative to the core and has a concave surface portion in rotary guided relation with the spherical outer surface. The rotatable wedge valve member also has an external convex surface that is positioned for sealing engagement with the valve seat and has a geometry developing a non-uniform wall thickness along the rotatable wedge valve member.

Classes IPC  ?

• F16K 51/00 - Autres détails non particuliers aux types de soupapes ou clapets ou autres appareils d'obturation

Abrégé

A rotatable wedge valve mechanism has a valve body or valve cartridge defining a valve chamber and flow ports in fluid communication with the valve chamber. A valve seat is located within the valve chamber in registry with one of the flow ports. A non-rotatable core member having a convex external surface portion is supported within said valve chamber. A wedge member is mounted for rotation within the valve chamber and has a range of rotary motion between open and closed positions of said valve and a non-uniform wall thickness throughout said range of rotary motion. An actuator upon rotary movement achieves opening and closing rotation of said wedge member. A method is provided for machining concave and convex wedge member surfaces from selected center-points to achieve relative thicknesses of wall sections of the wedge member.

Classes IPC  ?

• F16K 43/00 - Moyens de fermeture auxiliaire des soupapes, pouvant prendre à leur compte, en cas de réparation de la soupape, p. ex. un regarnissage des rondelles, la fonction des moyens normaux de fermetureDispositifs pour le remplacement temporaire des parties de soupapes dans le même but

Abrégé

A valve having a cartridge that fits within the valve housing and that may be replaced without removing the valve housing from adjoining equipment. The cartridge contains a wedge having curved surfaces and a driver to rotate the wedge from an open to a closed position. When the wedge rotates to the closed position a seal is formed on the convex surface of the wedge and a sealing assembly is moved to form a seal around the outlet of the valve housing.

Classes IPC  ?

• F16K 1/16 - Soupapes ou clapets, c.-à-d. dispositifs obturateurs dont l'élément de fermeture possède au moins une composante du mouvement d'ouverture ou de fermeture perpendiculaire à la surface d'obturation à éléments de fermeture articulés à pivot