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.

A steam valve 10 of an embodiment includes: a valve element 32 of a steam control valve 30, the valve element 32 being provided to be movable in an up and down direction; a valve element 42 of a main stop valve 40, the valve element 42 being provided under the valve element 32 coaxially with the valve element 32 to be movable in the up and down direction; a valve seat 60 with which the valve element 32 and the valve element 42 come into and out of contact; and a guide tube 43 slidably supporting a valve rod 41 including the valve element 42, and having a flange portion 43a at a bottom side in a casing 20. The steam valve 10 further includes: the casing 20 housing the valve element 32, the valve element 42, the valve seat 60, and the guide tube 43; a drain discharge hole 23 formed at a bottom side of the casing 20; a drain pipe 70 provided with a shutoff valve 71 and communicating with the drain discharge hole 23; and a flow direction changing part 80 which changes a direction in which steam having passed between the valve element 32 and the valve seat 60 and flowing along the guide tube 43 flows toward the drain discharge hole 23.

A single fill valve for a cryogenic liquid storage vessel. The valve includes a central opening configured to receive a cryogenic liquid and distal and bottom openings configured to direct cryogenic liquid into the cryogenic liquid storage vessel. The valve further includes a plunger and a pin configured to move the plunger and block at least the distal and bottom openings of the single use valve.

A refrigerant can tap with a tap body having an inlet and an outlet, an internal pin, a gasket, and a backflow preventer. The inlet and outlet of the tap body have a one-half inch ACME left-handed thread, the inlet for engaging the self-sealing valve of an R-1234yf can.

A valve apparatus has both solenoid and pneumatic drivers. Solenoid controls the flow rate, and pneumatic driver will provide a seal force to realize near zero sealing wherever needed. Pneumatic driver uses welded diaphragm cylinder structure so the whole system is small enough to fit into the case of a mass flow controller. The valve apparatus uses a diaphragm structure and the diaphragm is directly over the valve seat, so all other valve components will not expose to process gases. The valve apparatus is equipped with means to adjust air gap and preload force. A spacing spring is used to keep the centering of the plunger to avoid the friction between plunger and bearing as the conventional solenoid valves have. The solenoid driver can work alone with pneumatic driver removed wherever there is no close to zero sealing needed.

A self-sealing safety valve (10) for a container of pressurised fluid (12) comprises a substantially solid body (14) and attachment means (24) for connecting to a dispensing valve. The self-sealing safety valve includes a substantially central bore (16) extending through both the attachment means and the solid body, and the bore connects an inlet (20) to an outlet (18). The bore comprises at least three parts each of a different diameter: a first part (16a) immediately adjacent the outlet has a first diameter; a second part (16b) located immediately adjacent the first part has a second diameter that is wider diameter than the first diameter; and a third (16c) part located immediately adjacent the second part has a third diameter that is wider than the second diameter. The second part of the bore houses a first biasing means (30). The third part of the bore houses a sealing ball (28) and a second biasing means (38), and the sealing ball is located between the first and second biasing means. The diameter of the sealing ball is greater than the first diameter but smaller than the second diameter and is capable of sealing the second part of the bore. Under normal flow conditions of fluid through the bore, the first biasing means is configured to bias the sealing ball away from the second part of the bore. Under conditions of high pressure fluid flow through the bore, the sealing ball is forced towards a junction (21) between the second and third parts of the bore, against the first biasing means, sealing the outlet.

An assembly for a fire extinguisher system includes a fire extinguisher fitting that extends into a fire extinguisher container and a fill adapter. The fitting defines a fitting bore through which a connection portion of a pressure monitoring device at least partially extends and a fitting flange that is disposed about the fitting and is disposed parallel to a flange of the pressure monitoring device. The fill adapter includes an adapter housing and an adapter shaft. The adapter housing is arranged to be disposed about the pressure monitoring device. The adapter shaft that at least partially extends through the adapter housing. The adapter shaft is arranged to engage a monitoring housing of the pressure monitoring device.

A single fill valve for a cryogenic liquid storage vessel. The valve includes a central opening configured to receive a cryogenic liquid and distal and bottom openings configured to direct cryogenic liquid into the cryogenic liquid storage vessel. The valve further includes a plunger and a pin configured to move the plunger and block at least the distal and bottom openings of the single use valve.

The invention relates to a shut-off valve for controlling flow of a pressurised gas. The shut-off valve comprises a body defining a passage extending between a gas inlet channel and a gas outlet channel, and a sealing element arranged to, in a first position, close the passage, and in a second position, open the passage to allow gas to flow between the gas inlet channel and the gas outlet channel through the passage. The invention also relates to a method for controlling flow of a pressurised gas by means of a shut-off valve.

The present invention is directed to a self-aerating valve (1) comprising a valve body (2) with an aperture (3), and a valve flap (4) swivel-mounted to the valve body (2). The valve flap (4) is particularly configured to swivel between a closing position for closing the aperture (3), and an opening position for opening the aperture (3). Further, the self-aerating valve (1) comprises an air-supply port (5) connectable to an air-supply (12). The valve flap (4) is designed to release air supplied to the air-supply port (5) into the aperture (3) of the valve body (2) in the closing position. Preferably, the valve flap (4) is designed to release the air through its whole surface area (6), wherein the surface area (6) comprise a porous membrane (7) fluidly connected to the air-supply port (5). The self-aerating valve 1 may be used in an aerating system (11) of the present invention, which includes also an air-supply (12) fluidly connected to the air-supply port (5). The aerating system (11) may further comprise a drying unit (13) of the air-supply (12) adapted to dry and preferably also cool air supplied through the air-supply (12) to the air-supply port (5).