Provided is an electric valve and a manufacturing method thereof. The electric valve includes a valve body member, a valve seat member, a transmission member, a valve core member and a nut. The valve core member includes an upper tubular body including a first cavity, a valve core body and a connecting member. The valve core body is roughly in a round tubular shape and includes an annular thin wall portion and a second cavity. The connecting member includes a first axial through hole, and the upper end portion of the connecting member includes a lower stop portion. The annular thin wall portion is capable of abutting against a sealing portion of the valve seat member. A lower end portion of the nut is engageable with the lower stop portion to limit downward movement of the nut.

A block forged valve body includes a fully encapsulated seat ring. The valve body includes a through hole and a chamber having a shelf portion that overlies an annular shoulder that encapsulates the valve seat. Methods for the manufacturing and use thereof are also provided.

A solenoid valve has a housing which comprises a first and a second housing part, wherein a flexible diaphragm is arranged between the first and the second housing part. A movably mounted actuating element is provided which is connected to the diaphragm and detaches the diaphragm from a valve seat in an operating position of the first and the second housing part upon movement into an open position, and which presses the diaphragm onto the valve seat upon movement into a closed position. The first and the second housing part can take up a service position in which the diaphragm is accessible. The diaphragm is connected with a positive fit to the actuating element in a nondestructively detachable manner such that in the service position, the diaphragm can be removed from the actuating element by releasing the positive fit and can be connected thereto by establishing a positive fit. An assembly and a method of replacing a diaphragm are furthermore proposed.

A backflow prevention assembly is disclosed including a backflow prevention valve having a valve housing including a valve inlet end and a valve outlet end; a spool spacer of predetermined length having a first end and a second end; an inlet shut-off valve; and an outlet shut-off valve, wherein the spool spacer extends between the backflow prevention valve and one of the inlet shut-off valve and the outlet shut-off valve. The entire assembly, including the backflow prevention valve, the spool spacer, the inlet shut-off valve, and the outlet shut-off valve, is a certified assembly, certified by a certifying authority prior to installation. Methods of manufacturing a backflow prevention assembly and replacing a backflow prevention assembly are also disclosed.

A plug valve is disclosed having one or more components that are coated to reduce wear on the components. A plug of the valve may include a bore therethrough defined by an inner surface of the plug. The inner surface of the plug may include a nitride layer, such as a carbonitride layer. An outer surface of the plug may include both a nitride layer, in addition to a thermal spray coated layer, such as WC. The nitride layer may be formed by a ferritic nitrocarburizing process and the thermal spray coating may be formed by a high velocity air fuel (HVAF) or similar process. Inserts of the plug valve may also be coated by similar processes. An outer surface of the inserts may have a nitride layer and an inner surface of the inserts may have a nitride layer and a thermal spray coating.

A rotary valve can include a housing, a manifold with multiple flow paths can be fixedly mounted to the housing. A rotary actuator with a first surface can be rotatably mounted within the housing, and a valve seat with a second surface can be fixedly attached to the manifold, where the second surface can sealingly engage the first surface. The rotary actuator can include a gap that selectively aligns with respective ones of valve seat ports as the rotary actuator rotates relative to the valve seat, thereby selectively pressurizing one or more actuators. A system and method can include a rotary valve that selectively causes pads to extend at a predetermined orientation in the wellbore to steer a drill bit. The azimuthal orientation of a rotary actuator of the valve can determine which pads are extended and which are retracted as the drill bit rotates.

A shutoff switch for dispensing mixed beverages is presented. The shutoff switch includes a syrup inlet receiving syrup and a syrup outlet dispensing the syrup to a pump. The shutoff switch also includes a water inlet receiving water, and a water outlet dispensing the water to a either the pump or a dispensing point. Two distinct inlets and outlets for syrup and water prevent the syrup and water being mixed in the shutoff switch. The shutoff switch further includes a pressure responsive member that deforms based on pressure changes in the shutoff switch. When the deformation of the pressure responsive member reaches a threshold, an electrical gate in direct communication with the pressure responsive member opens, turning of a pump of the beverage dispensing system. Valves in either chamber of the shutoff switch can also be used as a redundant mechanical way to stop flow in the system.

According to various embodiments, a toilet system includes a toilet fill valve and a bowl fill valve that is configured to attach directly to the toilet fill valve. The toilet fill valve can include a body having an extended portion that forms a bowl fill outlet port, a water inlet configured to couple to a water source, and a tank water outlet configured to output water to a toilet tank. The bowl fill valve can include a bowl fill valve inlet port that is configured to mate directly to the bowl fill outlet port of the body of the toilet fill valve, a bowl fill valve outlet port, a protrusion configured to insert into a recess of the toilet fill valve and retain the bowl fill valve to the toilet fill valve, a slot that is configured to receive an extension of the toilet fill valve, and a water flow adjustment handle.

A backflow prevention assembly is disclosed including a backflow prevention valve having a valve housing including a valve inlet end and a valve outlet end; a spool spacer of predetermined length having a first end and a second end; an inlet shut-off valve; and an outlet shut-off valve, wherein the spool spacer extends between the backflow prevention valve and one of the inlet shut-off valve and the outlet shut-off valve. The entire assembly, including the backflow prevention valve, the spool spacer, the inlet shut-off valve, and the outlet shut-off valve, is a certified assembly, certified by a certifying authority prior to installation. Methods of manufacturing a backflow prevention assembly and replacing a backflow prevention assembly are also disclosed.

The present disclosure relates to a method of modifying a conventional injector (e.g., a high pressure direct fuel injector) and to the modified injector resulting therefrom. The modified injector provides a fluid flow rate and/or fluid spray plume (i.e., pattern) which is different than the fluid flow rate and/or fluid spray plume (i.e., pattern) of the original conventional injector. In one embodiment, provided is a modified injector used in internal combustion engines for fuel delivery directly into the combustion chamber.