A valve is disclosed with a clamp mechanism that accepts interchangeable outlet connections. The interchangeable outlook connections may have different sealing geometries, where different sealing geometries are specified to be used with different gases. For use with a particular gas, the valve may be configured with the interchangeable outlook connection with the sealing geometry that is appropriate for that gas.

A valve assembly can include a valve body and a stuffing box attached to the valve body, the stuffing box comprising a stuffing box body and a lifting lug extending from the stuffing box body. A method for lifting a valve assembly can include attaching a lifting mechanism to a lifting lug of the valve assembly and lifting the valve assembly with the lifting mechanism.

A vacuum valve comprises: a valve body configured to house a valve plate; a drive shaft configured to openably/closably drive the valve plate; a shaft seal configured to vacuum-seal the drive shaft; and an entrance prevention wall configured to prevent a particle from entering the shaft seal.

The invention provides an electric valve including a valve core, an actuating assembly to actuate the valve core and a housing receiving the valve core and the actuating assembly. The housing is provided with a partition plate dividing an internal space of the housing into a first space and a second space. The valve core and the actuating assembly are respectively accommodated in the first and second space and connected with each other via a through hole defined in a centre of the partition plate. The partition plate defines at least one diversion groove communicating with the through hole. Said at least one diversion groove extends through a sidewall of the housing.

A system including a valve. The valve includes a valve body having an interior volume and a bore along a first axis. A stem extends along a second axis and a flow control element couples to the stem. The stem selectively moves the flow control element through the interior volume between a closed position and an open position relative to the bore. A valve insert system retains a pressurized lubricant in the interior volume.

Shut-off valves for cryogenic fluids are disclosed herein. An example valve includes a valve body defining a flow path and a valve seat, a bonnet coupled to the valve body and defining a bonnet chamber, a plug, and a stem coupled to the plug. The stem is configured to slide to cause the plug to slide. The valve includes a spindle that includes external threads. The spindle is configured to move along a longitudinal axis of the bonnet as the spindle is rotated about the longitudinal axis via the external threads to cause the stem to slide linearly along the longitudinal axis. The valve includes a pivot ball positioned between and operatively coupled to the stem and the spindle. The pivot ball is configured to translate linear and rotational movement of the spindle into linear movement of the stem and the plug.

An example apparatus is disclosed herein comprising a valve that includes a valve body defining a fluid passageway between an inlet and an outlet, a flow control member in the fluid passageway, a stem coupled to the flow control member, and a bonnet coupled to the valve body. The stem extends through a channel in the bonnet. A section of the channel forms a bore. The bore is threaded. The apparatus includes packing in the channel to form a seal between the bonnet and the stem. The apparatus includes a worm wheel nut threadably engaged with the bore. The stem extends through an opening in the worm wheel nut. The apparatus also includes a worm meshed with the worm wheel nut. The worm is to rotate the worm wheel nut to cause the worm wheel nut to move and adjust a load on the packing.

The invention provides an electric valve including a valve core, an actuating assembly to actuate the valve core and a housing receiving the valve core and the actuating assembly. The housing is provided with a partition plate dividing an internal space of the housing into a first space and a second space. The valve core and the actuating assembly are respectively accommodated in the first and second space and connected with each other via a through hole defined in a centre of the partition plate. The partition plate defines at least one diversion groove communicating with the through hole. Said at least one diversion groove extends through a sidewall of the housing.