The mechanism includes a pipe and a valve provided in the pipe. The pipe is configured to connect a gas source and a semiconductor manufacturing apparatus. The valve is configured to control a flow rate of the gas. The valve includes a housing and a columnar shaft. The housing includes an inlet and an outlet. A gas flows from the gas source into the internal space through the inlet. A gas flows from the internal space to the semiconductor manufacturing apparatus through the outlet. A gap is provided between an outer peripheral surface of the shaft and an inner wall surface of the housing. The shaft is accommodated in the internal space of the housing and is rotatable. A through hole which penetrates the shaft is formed on the outer peripheral surface of the shaft. Both ends of the through hole correspond to the inlet and the outlet.

A switch blade type water flowing structure is provided. The switch blade type water flowing structure comprises a main body, a main water channel, a water inlet, water outlets, water flowing switches and the like, each water flowing switch comprises a switch seat, a switch piece and the like, wherein each switch seat is positioned and plugged in the corresponding water outlet in a sealed manner in the axial direction of the corresponding water outlet, and each switch piece is positioned on one side of the corresponding switch seat and is rotatably mounted in the corresponding switch seat in a sealed manner in the radial direction of the switch seat; meanwhile, each switch piece is provided with a pulling arm extending to the outside of the corresponding switch seat in an integrated manner, and each pulling arm is provided with a pulling piece extending out and being exposed on the outer surface of the corresponding water outlet.

A throttling valve that allows staged pressure drop increments upstream and/or downstream of a primary flow trim assembly within a valve body to help prevent cavitation and freezing effects. The flow trim assembly can be quickly and efficiently removed from the throttling valve (and repaired or replaced) without requiring disassembly of the throttling valve from a flow line or other fluid conduit, and without requiring removal of an automated actuator. A throttling valve body that allows direct mounting of actuators to the valve without the need for brackets and linkages.

A valve comprises a body that includes a first channel connected to the gas tank and a second channel connected to a circuit, with the first and second channels communicating with a central housing. The valve comprises a closure member movable between a closed position of the first channel and a supply position in which the first and second channels communicate. A third channel is formed in the body and communicates with the central housing The closure member is configured to isolate the third channel from the first and second channels in the closure and supply positions, and to allow communication between the third channel and the first and second channels in a discharge position.

An electrically operated fluid flow valve arrangement (50) includes an electrically powered magnetic field generator (42), a valve body (44) defining a valve chamber (7), an inlet port (5), an outlet port (20) and a valve member (18) located in the chamber (7). The valve member (18) is movable between closed and open conditions relative to one of the ports (5, 20). The valve member (18) includes a permanent magnet (9). The arrangement (50) includes a switchable pole 46 formed of a ferromagnetic material. In use, in a first latched condition, the valve member (18) is retained by the switchable pole (46) in one of the closed or open conditions and, in a second latched condition, in the other of the closed or open conditions, the valve member (18) being moved from one latched condition to the other by operation of the generator (42).

The valve has a pair of mutually rotatable ceramic valve bodies within the bonnet that cooperate to allow a flow of water in one relative position and to block a flow of water in a second relative position. One valve body is engaged by the valve stem to rotate therewith while the second valve body is held fixed within the bonnet via radial projections that fit into recesses in the bonnet. An elastomeric ring of square cross-section is squeezed against the non-rotatable valve body by a spiral retaining ring that is positioned in a circumferential groove in the bonnet.

A connection system for components through which a fluid is passed comprises an actuator and a main housing. The actuator has a cylindrical portion with an outer face. A handgrip is arranged at a first end of the cylindrical portion. In the region of a second end the cylindrical portion has a cavity, which is open towards the second end, and in the region of the second end there are arranged at least two gate-like passage openings for fluid connection. The main housing has a main body and at least two fluid passages arranged laterally on the main body. The main body has a cavity with an open first end, a base in the region of a second end, and at least two laterally arranged openings, which each produce a fluid connection to a corresponding one of the fluid passages. The cavity receives the cylindrical portion of the actuator rotatably through the open first end, and the inner diameter of the cavity corresponds to the outer diameter of the cylindrical portion of the actuator. The laterally arranged openings correspond to the passage openings of the actuator. A substantially cylindrical bearing pin is arranged on the base of the main body and a peripheral surface shaping is arranged in the region of the second end of the actuator, which shaping at least partially surrounds the bearing pin and thus forms a counter bearing for the second end of the actuator.

The present utility model discloses a novel switch blade type four-way water flowing structure. The novel switch blade type four-way water flowing structure comprises a main body, a main water channel, a water inlet, water outlets, water flowing switches and the like, each water flowing switch comprises a switch seat, a switch piece and the like, wherein each switch seat is positioned and plugged in the corresponding water outlet in a sealed manner in the axial direction of the corresponding water outlet, and each switch piece is positioned on one side of the corresponding switch seat and is rotatably mounted in the corresponding switch seat in a sealed manner in the radial direction of the switch seat; meanwhile, each switch piece is provided with a pulling arm extending to the outside of the corresponding switch seat in an integrated manner, and each pulling arm is provided with a pulling piece extending out and being exposed on the outer surface of the corresponding water outlet; during working, each pulling piece only needs to be operated to carry out front-back reciprocating pulling along the shaft axis of the corresponding water outlet, and then the corresponding switch piece can be driven to synchronously forwards and reversely rotate in the corresponding switch seat, and therefore, sealing opening and closing or flow adjustment of each water outlet are realized. In the modified water flowing switches, a switch blade type pulling operation mode creatively replaces a traditional rotating mode or shifting mode, and therefore, the advantages of labor saving in operation, convenience in pulling, high operation state recognition degree and the like are achieved.

A valve comprising: a valve body; and a valve stem disposed at least partially within the valve body, the valve stem comprising a sidewall defining a central lumen and at least one opening in the sidewall, wherein the valve is adapted to prevent fluid flow through the lumen when the at least one opening is disposed within the valve body and permit fluid flow through the lumen when the at least one opening is exposed from the valve body, and wherein the valve is essentially free of a spring.

Provided are a two-way valve for flow rate control and a temperature control device using the same, which can linearly control a flow rate of a fluid with good accuracy as compared to a switching valve in which a communication hole is simply formed in a valve element so as to open a flow passage through alignment with an outflow portion. The two-way valve for flow rate control, includes: a valve main body (6), which includes a valve seat (8) having a columnar space, and has a first valve port (9) formed in one end portion of the valve main body in an axial direction of the valve seat (8) so as to allow flow of a fluid, and a second valve port (11) that is formed in a peripheral wall of the valve seat (8) to allow flow of the fluid and has a rectangular cross section; a valve element (12), which is arranged in a freely rotatable manner in the valve seat (8) of the valve main body (6), and has a shape forming a part of a cylindrical shape having a predetermined central angle () so as to linearly change an opening area of the second valve port (11); and drive means (3) configured to rotate and drive the valve element (12).