A connection system, in particular for a pressure reducer of a diving regulator, the system comprising a connector (1) having a first end (2) adapted to be fastened to a pressure reducer and a second end (2′) adapted to be fastened to a valve of a compressed air cylinder, said connector (1) having an internal passage (4) extending substantially axially between said first and second ends, said internal passage (4) including a filter (5), preferably made of sintered stainless steel, and a retaining member (6a; 6b; 6c; 6c′; 6d; 6e) fastened to said second end (2′) and supporting firstly said filter (5) and secondly a main O-ring (7; 9e), said retaining member (6a; 6b; 6c; 6c′; 6d; 6e) forming an inlet opening, said system including a shutter device comprising a shutter member (9a; 9b; 9c: 9c′; 9d; 9e) that is deformable and/or movable between a shut position in which it shuts said inlet opening, and an open position in which it does not shut said inlet opening, said shutter member (9a; 9b; 9c: 9c′; 9d; 9e) being urged resiliently towards its shut position and being deformed and/or shifted towards its open position by compressed air coming from said compressed air cylinder, said shutter member (9a; 9b; 9c: 9c′; 9d; 9e) being deformed and/or shifted towards its open position in a direction extending substantially transversely relative to the flow direction of the compressed air stream.

A flow path opening/closing apparatus includes a lid member and a receptacle member fixed to the lid member. The receptacle member includes a first wall that defines an outflow opening that is open to the lid member and a second wall provided around the first wall. The lid member closes the outflow opening by contacting the first wall due to relative movement of the lid member with respect to the receptacle member. A surface that is one of surfaces of the first wall and that faces the lid member and a surface that is one of surfaces of the second wall and that faces the lid member are separate by a stepped portion.

An actuator for a pilot valve, including a housing, a piston movably mounted in the housing and an actuator chamber defined between the piston and the housing. The actuator includes a control fluid feed for introducing a fluid into the actuator chamber to control fluid pressure, with the fluid pressure acting on the piston. The actuator also includes an actuation member for acting on the pilot valve and a loading spring between the piston and the actuation member. The loading spring is arranged to bias the piston against the fluid pressure in the actuator chamber. The control fluid feed controls the fluid pressure so the fluid pressure acts on the piston against the bias of the loading spring to control the biasing force.

A flow control device includes a housing with an inlet and an outlet and a flow conduit disposed in the housing. The inlet, the flow conduit, and the outlet define a flow passage. A valve seat is disposed in the housing downstream of the inlet, and a shuttle is movably disposed in the housing and displaceable between a closed position engaging the valve seat to close the flow passage and an open position spaced from the valve seat to open the flow passage. A sealed chamber is defined between the housing and the flow conduit. A port coupled with a source of pressurized fluid communicates with the sealed chamber, where the shuttle is displaceable between the closed position and the open position based on a pressure in the sealed chamber. The threshold water pressure for displacing the flow conduit may be adjustable by modifying the pressure in the sealed chamber.

A dome pressure regulator for regulating gas pressure, having a housing (1), a fixed valve seat (10), a movable valve body (8), a closing spring (9) acting on the valve body (8), and a diaphragm (4) which is connected to the valve body (8) and which is able to be subjected to a control pressure, settable via a gas pressure spring, in the opening direction and to a secondary pressure in the closing direction. The object of the invention is to detect state parameters of the system and to integrate continuous functionality checking and logging of the collected measurement values into the pressure regulator. In order to achieve said object, the invention proposes at least one travel sensor (15), by way of which the stroke of the valve body (8) is measurable, and a sensor-system evaluation unit (17) integrated into the housing.

A pressure reducing valve includes a valve housing, plunger, pressure sensing cavity, and biasing member. The valve housing includes a valve inlet and valve outlet in selective fluid communication with each other. The plunger is in the valve housing and movable between a closed position and open position. The plunger is positioned downstream from the valve inlet and upstream from the valve outlet. The plunger includes a venturi and a channel. The venturi is within the plunger and has a venturi inlet and venturi outlet. The channel is within the plunger and is in fluid communication with the venturi. The pressure sensing cavity is in fluid communication with the channel. The biasing member exerts a biasing force on the plunger toward the open position. The channel is in fluid communication with the pressure sensing cavity to provide a fluid pressure that is lower than the outlet pressure during flow.

Axial gas pressure regulator in which in a housing (01) is axially positioned a balanced nozzle (02), slidingly movably placed in sliding gaskets (23). Nozzle (02) is pressed by spring (10) and extension (03), while a seat (05) with a gasket (07) is mounted opposite to it, which is squeezed between the housing (01) and an outlet flange (04) and in which are performed openings (29). On the upper side of the housing (01) is mounted a carrier (30) of a second housing (21), consisting of a lower part (08) and an upper part (09), between which is squeezed a membrane (22). On the upper and lower side of membrane (22) is placed on each side one plate (33) which are in the central part connected by a support (34) and a tightener (35), and in the center of which the piston (12) is fixed with a performed choking channel (11) in the axis. The piston (12) is by its lower end slidingly movably placed, through a guide (36) and gaskets (24), in lower part (08) of the second housing (21), and by the upper end, through a guide (37) and gaskets (24), it is placed in the upper part (09) of the second housing (21). The piston (12) leans on roller (13) which is by an axle (17) rotatably placed at the end of a first lever (14), which is by its other end articulately connected with a support (30), and by its middle is articulately connected to a second lever (15). The second lever (15) is at its lower end articulately connected to a third lever (16), which is by an axle (18) is slidingly movably placed in the lower part of the carrier (30), while archly bended legs (161) of the third lever (16) comprise the nozzle (02) and, via plates (38), are slidingly movably connected to it.

A pressure relief valve for a gas pressure regulator includes: a deformable and gas-tight, laminar element; an outflow channel that allows the passage of the gas between one side and the other of the laminar element including a precisely-sized hole; a shutter removably associated with the laminar element through a coupler that defines, for the shutter, a closed position of the outflow channel and an open position of the outflow channel; an elastic element interposed between the shutter and the laminar element in order to push the shutter towards the closed position. The couple includes a through hole belonging to the laminar element and a shaft slidingly inserted in the through hole, and the shutter is operatively connected to the shaft. The outflow channel is distinct from the through hole, as sealing is provided to prevent the passage of the gas between the through hole and the shaft.

A flow and pressure stabilization device includes a housing; a first fluid chamber; a gas chamber; a deformable bladder that separates the first fluid chamber from the gas chamber, the deformable bladder comprising a longitudinally protruding portion shaped such that, when a pressure in the gas chamber is greater than a pressure in the first fluid chamber, the longitudinally protruding portion extends toward the first fluid chamber; and a valve in fluid communication with a fluid outlet, the valve including: a second fluid chamber in fluid communication with the first fluid chamber; a fluid port in fluid communication with the fluid outlet; and a deformable diaphragm positioned adjacent to and biased toward the fluid port.

The invention relates to a valve device (1) having a pressure regulator (3) for a flowing gas and a housing (4). The pressure regulator (3) includes a diaphragm (31), a spring (34), a control actuator (32), and a control seat (33). The control actuator (32) includes a plate-like portion (32′) and a rod-like portion (32″) adjacent to one side of the plate-like portion (32′), the control seat (31) encompassing the rod-like portion (32″) of the control actuator (32). The diaphragm (31) and the control actuator (32) are mechanically coupled to each other such that an axial movement of the control actuator (32) moves the diaphragm (31). In addition, the spring (34) and the control actuator (32) are mechanically coupled to each other. The control seat (33) limits a movement of the control actuator (32). In one state, the control seat (33) and the control actuator (32) prevent the gas from flowing. The control seat (33) is configured as a ring arranged in a recess (40) of the housing (4).