A toy gun magazine constant gas flow valve structure is coupled with a magazine of a pneumatic toy gun and structurally includes a gas valve body fixed in the magazine and includes a gas inlet end portion, a gas discharge portion, and a coupling end portion, a driving rod movably disposed in the gas valve body, a control member coupled with one end of the driving rod, a stroke limiting trough having a front limiting portion and a rear limiting portion, and a stop element. Before the toy gun is firing, the stop element abuts the front limiting portion to control the extent by which the driving rod presses against the leak-sealing element and after the firing of the toy gun, the stop element abuts the rear limiting portion to control the extent of opening of the gas inlet end portion and the gas discharge portion.

A valve for pressurized fluid including a body having a front face and a rear face and housing an internal fluid circuit having an upstream end configured to be placed in communication with a reserve of pressurized fluid and a downstream end configured to be placed in communication with a user of fluid, the circuit including a collection of valve shutter(s) including at least one shutoff valve shutter allowing the circuit to be closed or opened, the valve including a control lever controlling the collection of valve shutter(s), an end for grasping, the control lever being mounted with the ability to rotate on the valve between a rest position and an active position in which the control lever is away from the body of the valve and actuates the collection of valve shutter(s) into a position in which the circuit is open with a first bore section.

A valve for pressurized fluid including a body housing a fluid circuit having an upstream end configured to be placed in communication with a reserve of pressurized fluid and a downstream end configured to be placed in communication with a user of fluid, the circuit including a collection of valve shutter(s) having at least one shutoff valve shutter allowing the circuit to be closed or opened, the valve having a member for manually controlling the collection of valve shutter(s), the control member being mounted thereby allowing the body to move between a rest position in which the collection of valve shutter(s) is in a position in which the circuit is closed and an active position in which the control member actuates the collection of valve shutter(s) into a position in which the circuit is open with a first bore section.

A pressure evacuation device for a compressed gas cylinder having a fixed assembly that is semi-permanently attached to an opening in the cylinder and comprises a retractable bleed valve, and a detachable assembly that can be readily attached to and detached from the fixed assembly and comprises a valve stem to control the bleed valve and a valve tee to direct the flow of gas from the cylinder.

A toy gun magazine constant gas flow valve structure is coupled with a magazine of a pneumatic toy gun and structurally includes a gas valve body fixed in the magazine and includes a gas inlet end portion, a gas discharge portion, and a coupling end portion, a driving rod movably disposed in the gas valve body, a control member coupled with one end of the driving rod, a stroke limiting trough having a front limiting portion and a rear limiting portion, and a stop element. Before the toy gun is firing, the stop element abuts the front limiting portion to control the extent by which the driving rod presses against the leak-sealing element and after the firing of the toy gun, the stop element abuts the rear limiting portion to control the extent of opening of the gas inlet end portion and the gas discharge portion.

A blood pressure measurement system is provided that includes an inflatable cuff, a valve assembly and chamber assembly. The chamber assembly can house a gas canister for providing gas to the inflatable cuff. The valve assembly can include a valve having a high pressure cavity, a low pressure cavity, and a channel providing a gas pathway between the high pressure cavity and the low pressure cavity. The valve assembly can further include a channel cover and spring in the high pressure cavity. The spring can exert a force on the channel cover to create a seal between the high pressure cavity and the channel. The valve assembly can further include a rod extending through the channel and exerting a force on the channel cover to create a gas pathway between the high pressure cavity and the channel.

A fill limit vent valve for a fuel system includes a housing assembly, an outlet port and a flow dam. The housing assembly has a main housing including a cylindrical body and an upper housing portion. The upper housing portion has a lower wall that defines an orifice and an outer cylindrical wall that defines an upper housing chamber. The outlet port is formed on the main housing and fluidly communicates fuel vapor out of the fill limit valve. The orifice is offset from a centerpoint of the lower wall in a direction away from the outlet port. The flow dam extends from the lower wall into the upper housing chamber and connects on opposite ends to the outer cylindrical wall. The flow dam and upper housing chamber cooperating to form a liquid trap that mitigates the possibility of liquid fuel from reaching the outlet port from the orifice.

Novel air valve includes a valve stem assembly and a storage space provided on one side of the valve stem assembly and used for storing an inflating component; the valve stem assembly includes a valve base and a valve core capable of elastically retactable relative to the valve base; the valve base is provided with an opening, and the bottom of the opening having a core cavity enabling the valve core to expand and contract elastically therein; and vents are disposed in a circumferential direction of the core cavity; the valve core is provided with a sealing block for sealing the opening; and a pressure spring is disposed between the sealing block and the bottom of the core cavity for pressing the sealing block to block the opening.

The invention is directed to a gas cylinder valve (2) comprising a body (4) with an inlet (18), an outlet (40) and a passage (20) fluidly interconnecting said inlet and outlet; a shut-off device (22) with a seat (26) formed in the passage (20) and a shutter (24) movable along a longitudinal axis (7) for cooperating with said seat; a spindle (12) rotatably mounted on the body (4) along the longitudinal axis (7) and cooperating with the shutter (24) such as to move said shutter upon rotation of said spindle; a residual pressure device (28) fluidly downstream of the shut-off device (22), with a seat (32) formed in the passage (20) and a piston (30) movable along a transversal axis (38. At least one of the shutter (24) and the piston (30) shows a recess or opening (24.4) accommodating the other of said shutter and piston.

Provided are: a shut-off valve control device which is capable of reducing the difference between a set opening amount and the actual opening amount, when executing a partial valve stroke test; a shut-off valve control system; a method for calculating a shut-off valve control coefficient; and a method for controlling a shut-off valve. This shut-off valve control device is provided with a microcomputer for controlling the opening and closing of a solenoid valve which supplies air from an air supply source, to a cylinder of an air cylinder for controlling a valve shaft of a shut-off valve, and discharges said air. The microcomputer acquires a set opening amount of the shut-off valve. Furthermore, the microcomputer controls the solenoid valve to a value obtained by dividing the acquired set opening amount by a predetermined coefficient C.