Abstract: Within a housing (3), a gas inlet (4) communicates with a gas outlet (5) through an inlet passage (11), a shut off valve (12) and an outlet passage (13), and a charging port (6) communicates with a discharging port (7) via a bypass passage (14). The outlet passage (13) is provided with a first pressure reducing valve (21) of piston type, a second pressure reducing valve (22) of diaphragm type and a first check valve (31) for retaining residual pressure, in series in the mentioned order. The bypass passage (14) is provided with a second check valve (32) which inhibits a flow from the discharging port (7) to the charging port (6).

Abstract: A housing (16) comprises a first housing (17) and a second housing (18). The first housing (17) is fixed to a gas cylinder (1) and is provided with a cylinder main valve (3) which is manually opened and closed. The second housing (18) is provided with a main stop valve (4) of an electromagnetically opening and closing valve. The second housing (18) is removably fixed to the first housing (17) by a tightening bolt (39). In this state where the second housing (18) is fixed to the first housing (17), the cylinder main valve (3) has a first valve chamber (44) communicated with a second valve chamber (63) of the main stop valve (4).

Abstract: An accommodation portion (53) is formed at a position where it faces a check valve member (42) through a chamber inlet (41a) of a check valve chamber (41). An opening means (51) is attached in the accommodation portion (53). This opening means (51) switches over between a valve opening position (Y) and a valve-opening cancellation position (X). A lock means (55) is attached between a peripheral wall of the accommodation portion (53) and the opening means (51). The lock means (55) changes over between a lock position (L) where it limits an advancement of the opening means (51) from the valve-opening cancellation position (X) and a lock cancellation position (M) where it allows the advancement. A valve-opening actuation means (60) is provided with a lock cancellation means (61). A magnetic force is made to occur between the lock cancellation means (61) and the lock means (55). The magnetic force changes over the lock means (55) to the lock cancellation position (M).

Abstract: A housing (4) is provided with a shut off valve attaching bore (16) within which an intermediate transmission means accommodating space (25) and a shut off valve chamber (9) are formed. A thrust screw member (17), an intermediate transmission means (18) and a closure member (19) are attached into this bore in the mentioned order. A diaphragm (21) is arranged between the closure member (19) and the intermediate transmission means (18). The diaphragm (21) partitions the shut off valve attaching bore (16) into the intermediate transmission means accommodating space (25) and the shut off valve chamber (9), and hermetically seals the shut off valve chamber (9). Disposed in the intermediate transmission means accommodating space (25) is a valve opening spring (29), which resiliently urges the intermediate transmission means (18) in a valve-opening direction.

Abstract: A housing (5) is formed with a cylinder communication bore (6) able to communicate with an interior space of a gas cylinder (1), a gas passage (7) and a joint attaching portion (8). The joint attaching portion (8) is provided with an engaged portion (21). A joint (14) is attached to the joint attaching portion (8). The joint (14) is provided with a connecting portion (16) to which a gas instrument is connected, a communication passage (18), and an engaging portion (19). The connecting portion (16) is opened to provide an instrument communication bore (17). The instrument communication bore (17) communicates with the cylinder communication bore (6) through the communication passage (18) and the gas passage (7) in order. The engaging portion (19) meshes with the engaged portion (21) unseparably.

Abstract: A container valve (2) comprises a housing (3) within which a fluid inlet (5) communicates with a fluid outlet (7) via a valve seat (9) and a valve chamber (10). A closure member (15) is inserted into the valve chamber (10). A spindle (17) is inserted into a guide hole (14) which communicates with the valve chamber (10). The closure member (15) is connected to a handle (18) through the spindle (17). The handle (18) enables the closure member (15) to operate for opening and closing with respect to the valve seat (9). An annular scraper (21) is attached between the closure member (15) and a peripheral wall of the valve chamber (10). The annular scraper (21) has a lip (21a) whose inner peripheral surface is brought into contact with an outer peripheral surface of the closure member (15). A sealing member (23) is attached between the closure member (15) and the guide hole (14).

Abstract: A cylinder (32) is hermetically attached into an attaching bore (31) formed within a housing (4) and is made to advance and retreat between a take-out position (A) and a charging position (B). A check valve chamber (28) is formed within the cylinder (32). A check spring (43) resiliently pushes a check valve member (29) inserted into the check valve chamber (28) toward a check valve seat (42). The cylinder (32) has an outer surface provided with an actuation portion (50). If the actuation portion (50) is pushed, it retracts the cylinder (32) toward the charging position (B). Provided at a position opposing to the check valve member 29 through a chamber inlet (40) of the check valve chamber (28) is a receiving portion (46), which receives the check valve member (29) on a halfway while the cylinder (32) is retreating.

Abstract: A housing (2) has an upper portion engaged with a cylindrical stopper member (20) in screw-thread fitting so as to be able to vertically advance and retract the stopper member (20). The stopper member (20) has an outer thread (20a) engaged with a nut member (21) and has an inner thread (20b) engaged with a thrust screw member (23) each in screw-thread fitting. The stopper member (20) has a stopping portion (A) which prevents the downward movement of the intermediate transmission member (25) connected to the thrust screw member (23) over a predetermined distance. This inhibits a metal diaphragm (12) from being excessively pushed to a valve seat (15). When further moving the diaphragm (12) for valve closing, the nut member (21) is loosened and at the same time the stopper member (20) is advanced downwards to thereby define a gap between a receiving portion (B) of the intermediate transmission member (25) and the stopping portion (A).

Abstract: A stop valve (7) and a pressure reducing valve (8) are arranged in series with each other within a housing (3). A first check valve (11) is arranged in a gas charging passage (10) provided in parallel to the pressure reducing valve (8). The pressure reducing valve (8) is adapted so as to move a piston member (59) for opening and closing by a balance between a spring force for valve opening and a secondary pressure for valve closing. A first coned disc spring (F) urges the piston member (59) toward an opening direction. The first coned disc spring (F) is connected in series with a second coned disc spring (S). The second coned disc spring (S) is compressed by a pushing member (66) projecting from a cap member (61).

Abstract: A gas inlet (4) an inlet passage (8), a stop valve (7), an outlet passage (9) and a gas outlet (5) are communicated orderly with one another within a valve casing (3). The outlet passage (9) is communicated with the inlet passage (8) through a gas charging passage (10). A check valve (11) for blocking a flow from the inlet passage (8) to the outlet passage (9) is arranged in the gas charging passage (10). When a vacant gas cylinder (1) is charged with a high-pressure gas, the charge gas is supplied to a gas charging mouthpiece (17) connected to the gas outlet (5) while the stop valve (7) is kept closed. Thereupon, an interior space (A) of the gas cylinder (1) is charged with the charge gas from the outlet (5) through the check valve (11) and the gas inlet (4) in order.

Abstract: A gas inlet (4), a stop value (7), a pressure reducing valve (8) and a gas outlet (5) are arranged in series within a valve casing (3). The gas outlet (5) and an outlet (7b) of said stop valve (7) are communicated with each other by a gas charging passage (10) provided with a check valve (11). The gas outlet (5) is communicated with a secondary safety valve (28) by a gas inducting passage (29). When a gas cylinder (1) is charged with a gas, a gas charging mouthpiece (14) is attached to the gas outlet (5). Thereupon, an opening or closing portion (A) provided in the gas inducting passage (29) is closed by an actuating portion (30) provided in the mouthpiece (14). Thereby, a high-pressure gas is not released from the secondary safety valve (28).

Abstract: An attachment of a gas charger for a gas container is adapted to be mounted to a valve device with a check valve and to be used for forcedly opening a spring-closed type check valve by means of a charging pressure of a fresh gas. The attachment is provided with a gas charging mouthpiece detachably secured to a valve box of the valve device, a piston supporting member movable together with the gas charging mouthpiece, and a valve-opening piston. The valve-opening piston is sealingly supported by the piston supporting member in such a condition as being freely movable in the diametrical direction and is detachably sealingly fitted into a received pressure removing cylinder room of a check valve member.

Abstract: A valve assembly with a check valve for a gas container has a check valve chamber formed in such a portion of a circumferential wall of a stop valve chamber within a valve box as being adjacent the portion on the side of a stop valve opening and closing manipulation assembly and the portion on the side of a gas outlet port. Within the check valve chamber a check valve body is resiliently urged to a check valve seat for valve closing by means of a checking spring. A check valve body opening member for opening the check valve body is arranged so as to face the check valve body from the side of the check valve seat and is adapted to be advanced toward the check valve chamber so as to be changed over to the valve open position for opening the check valve body and to be retreated from the check valve chamber so as to be changed over to the valve opening cancellation position.

Abstract: There are provided coned disc springs and an intermediate transmission member in order between a thrust threaded member for generating the valve closing thrust and a valve body, and the intermediate transmission member is adapted to be urged by means of the coned disc springs toward the valve closing side with respect to the thrust threaded member. A contact receiving means is so arranged as to limit the movement of the thrust threaded member toward the valve closing side, and a contact receiving position of the contact receiving means is set at a midway position of the compression range of the coned disc springs. Wherein, the handle is adapted to be changed over between the handle held condition and the handle released condition by the relative movement of the intermediate transmission member with respect to the thrust threaded member.

Abstract: In a gas-cylinder valve adapted to be mounted onto a gas cylinder for use there are provided a gas supply valve chamber and a protection valve chamber in sequence between a gas inlet and a gas outlet within a valve box of the gas-cylinder valve. The gas supply valve chamber is provided with a gas supply valve body and the protection valve chamber is provided with a protection valve body. When the gas outlet of the gas-cylinder valve is opened to the atmosphere, the protection valve body serves to prevent ambient air, and moisture and/or dust in it from entering the gas supply valve chamber thereby avoiding damage to the valve and leakage of gas from the valve.

Abstract: The present invention relates to a valve with a residual pressure indicator for a portable oxygen inhalant cylinder, which is a small-sized valve secured to a mouth portion of such portable small cylinder in which the inhalant oxygen is charged in a pressurized state. A residual pressure indicator is assembled in the valve casing of the valve so that a residual amount of compressed oxygen within the cylinder is observed accurately from an outside of the valve casing. Accordingly, the oxygen inhalation device provided with the valve can be safely carried by a patient who has pulmonary disease or respiratory disease or rescuers.

Abstract: The invention relates to a valve with a level gauge for a elongated liquidfied carbon dioxide container, comprising a body, and a level gauge having at least one articulating or flexible part between a float and a rod connected on the float to move an indicating member by a detecting member fixed thereon. The flexible part allows the float to contact the inner periphery of the container, wherein the inner periphery of the container shares a part of the weight of the float, cancelling the bending moment which is produced by the weight of the float and acting on the rod.

Abstract: A gas-inlet attachment includes an air-tightly sealed pressure differentiator in the mouthpiece of a gas charger, wherein the pressure differentiator includes a valve-opener slidably and air-tightly connectable to the check valve in the cock with a pressure differentiating space interposed therebetween, thereby enabling the check valve to be biased in its opening direction under the differentiated pressure provided by the pressure differentiator.

Abstract: A pressure-responsive valve unit is received in the cavity of a valve assembly housing, the inner end of the cavity being connected with a fluid container. The valve unit includes a main body having a chamber containing a check valve body that is movable toward and away from engagement with a valve seat on the main body, the valve seat facing the check valve body and the inlet end of the cavity, and the main body having passage means communicating fluid from the container to the front end portion of the check valve body. The check valve body is biased into engagement with the valve seat by a spring, the force of which is adjustable with a plug threaded into the inner end of the main body chamber. An outlet bore extends from the outer end of the main body to the valve seat, and the check valve body is engageable by a push rod inserted through said outlet bore.

Abstract: A hand-operable takeout valve for temporary attachment to a fluid pressurized container, including a hand-operable main valve and a check valve operable in response to a fluid pressure, wherein the check valve is additionally controllable by hand for co-working with the operation of the main valve.