A valve actuator device includes a supporting body, a driving shaft, and a fluid cylinder having a body connected to one side of the supporting body. The cylinder has a rod that controls rotation of a driving arm rigidly connected to the driving shaft. Linear movement of the rod is converted into rotation of the driving arm by engagement of a cam-follower pin carried by the rod within a slot formed in the driving arm. The slot is formed in an insert that constitutes an element separate from the driving arm body and that is received and held within a seat of the driving arm body. Thus, a single main body for the driving arm is provided, having a plurality of inserts for selective mounting within the seat and are differentiated from one another in the dimensions and shape of the slot and/or in the material of the insert.

An example actuator assembly includes a valve body having a body locating shoulder as a protrusion from an interior peripheral surface of the valve body, and an actuator having an end that is inserted into the valve body. The end has a first portion with a first diameter and a second portion with a second diameter that is larger than the first diameter, and the second portion includes a threaded region. A locating shoulder is between the first portion and the second portion of the end of the actuator arranged at a position where the first diameter changes to the second diameter. The locating shoulder mates with the body locating shoulder of the valve body when the actuator is inserted and screwed into the valve body to enable alignment of the valve body and the actuator.

An example actuator assembly includes a valve body having a body locating shoulder as a protrusion from an interior peripheral surface of the valve body, and an actuator having an end that is inserted into the valve body. The end has a first portion with a first diameter and a second portion with a second diameter that is larger than the first diameter, and the second portion includes a threaded region. A locating shoulder is between the first portion and the second portion of the end of the actuator arranged at a position where the first diameter changes to the second diameter. The locating shoulder mates with the body locating shoulder of the valve body when the actuator is inserted and screwed into the valve body to enable alignment of the valve body and the actuator.

Actuators for fluid catalytic cracking unit slide valves and similar valves are disclosed. The actuator frame is assembled by bolting, allowing for standardized configurations that permit stocking of parts and avoids prior art problems of dealing with actuators designed for each individual project, allowing for rapid assembly of new actuators on demand that suit each project by varying the incorporated components, as well as permitting for more-rapid servicing when necessary. Additionally, the instrumentation for the actuator is contained within the actuator frame, better protecting the instrumentation from damage such as from being struck. The actuator includes a new manual engagement system, providing for better engagement of manual controls to actuate the actuator and the accompanying valve when necessary.

Actuators for fluid catalytic cracking unit slide valves and similar valves are disclosed. The actuator frame is assembled by bolting, allowing for standardized configurations that permit stocking of parts and avoids prior art problems of dealing with actuators designed for each individual project, allowing for rapid assembly of new actuators on demand that suit each project by varying the incorporated components, as well as permitting for more-rapid servicing when necessary. Additionally, the instrumentation for the actuator is contained within the actuator frame, better protecting the instrumentation from damage such as from being struck. The actuator includes a new manual engagement system, providing for better engagement of manual controls to actuate the actuator and the accompanying valve when necessary.

A two-way faucet includes a hollow faucet body; a rotatable water guide seat positioned in the faucet body; a rocker arm water guide assembly coupled to the rotatable water guide seat, the rocker arm water guide assembly including a supporting water guide seat and a supporting water guide tube in communication with the supporting water guide seat; a reversing outlet assembly assembled to one end of the supporting water guide tube afar from the supporting water guide seat, the reversing outlet assembly defining an upper outlet and a lower outlet; an outlet tube hermetically connected to the reversing outlet assembly and in communication with the upper outlet; and a shower outlet assembly having a switch assembled to one end of the outlet tube afar from the reversing outlet assembly, the shower outlet assembly being detachably supported on the supporting water guide seat.

Embodiments of a directional valve assembly that provides a single device with functionality of a two-position design for automated operation and functionality of a three-position design for manual operation. The embodiments can include a housing with a piston chamber and a spool member that transits in the housing to regulate the flow of a working fluid to a cylinder. The embodiments can also have one or more pilot operators that regulate the flow of pilot air into the piston chamber to move the spool member between two positions, i.e., two open positions. The embodiments can also have a manual operator (e.g., a lever) that can move the spool to the open positions and to a closed position. In one embodiment, the spool member is configured to remain in either a first position, a second position, or a third position in the absence of an outside stimulus on the pilot operators.

Embodiments of a directional valve assembly that provides a single device with functionality of a two-position design for automated operation and functionality of a three-position design for manual operation. The embodiments can include a housing with a piston chamber and a spool member that transits in the housing to regulate the flow of a working fluid to a cylinder. The embodiments can also have one or more pilot operators that regulate the flow of pilot air into the piston chamber to move the spool member between two positions, i.e., two open positions. The embodiments can also have a manual operator (e.g., a lever) that can move the spool to the open positions and to a closed position. In one embodiment, the spool member is configured to remain in either a first position, a second position, or a third position in the absence of an outside stimulus on the pilot operators.

A gas valve that can be opened using a trigger mechanism. When triggered, the valve is preferably configured to deliver a rapid release of air and then reset itself in the closed state. Once in the closed state, pressure may again be built on the upstream side of the valve until another release is desired.

To suppress increase of a pressure loss in a channel and blocking of the channel due to water adhering to a rectification mesh provided downstream of a butterfly valve. A fuel cell system includes: a butterfly valve provided on a pipe between a fuel cell and another component; and a rectification mesh provided on a downstream side of gas flowing in the pipe relative to the butterfly valve, a mesh that rectifies a flow of the gas being formed in the rectification mesh. The rectification mesh has, in its lower end part in a vertical direction, a first opening part in which the mesh is not formed.