Booster valve (4) for pneumatic circuits, comprising: a hollow body (5), a pilot flow inlet/outlet gap (15) communicating directly with a control volume (16), an inlet/outlet gap (45) communicating with an actuator and communicating directly with an accumulation volume (29), a supplying gap (53) communicating directly with a supplying volume (38), a discharge gap (44), an amplified discharge shutter (25) which determines the sealing towards the discharge gap (44), a central device (43) comprising an amplified charge shutter (32) which determines the sealing towards the supplying gap (53), an activation piston (22) which, subjected to the pressure acting in the accumulation volume (29) and in the control volume (16), determines the movement of the amplified discharge shutter (25) or the amplified charge shutter, and having two separated and independent charge (47) and discharge (46); gain control devices which allow an independent adjustment between the charge and the discharge step and vice versa, and the central device (43) comprising a plurality of stakes (33), which, in combination with the passage sections determined by the opening of the amplified discharge shutter (25) and the amplified charge shutter (32) determine the flow amplification in discharge and charge steps.

A device (1) for controlling the flow of a fluid through a conduit (3) from an upstream side (8) to a downstream side (10). The device includes a housing (4) having one or more valve apertures (6) through which the flow of fluid is selectively controlled. A valve member (12) is mounted on the housing and arranged to move reciprocally to selectively open and close the one or more valve apertures. A seal (20) is arranged at or beyond a position the valve member reaches when the one or more valve apertures are all closed. The device also includes a resilient member (26) that acts to bias the seal towards the valve member.

A pressure regulating module for regulating the pressure of a first fluid using a reference pressure of a second fluid. A pressure transfer assembly including a piston slidably disposed within a cylinder bore between a control fluid chamber and a reference fluid chamber is dimensioned to provide a predefined radial clearance between at least a portion of the outer side wall and the inner circumferential surface of the housing along a predefined axial length of the main body. The predefined radial clearance and predefined axial length are dimensioned to control the flow rate and amount of fluid along one or more fluid communication passages formed between at least a portion of the piston and the housing inner circumferential surface from one or more high pressure fluid zones to a lower pressure fluid zone which can include a leak and/or weep orifice directing fluid to a drain and/or vent circuit.

The present invention concerns a balanced regulating valve (1) for regulation of a medium, such as an inert gas, where the regulating valve comprises a valve housing, composed of at least two valve housing parts, wherein there is an inlet opening (3) for an inlet pressure, and an outlet opening (4) for an outlet pressure, where furthermore there is in the valve housing an inlet opening for a pilot pressure (5), where the regulating valve furthermore comprises at least one spring element (6) and one valve piston (7) with a sealing element (8), where the valve piston, via a valve seat with a seat area (10) in a first position closes off the inlet opening, and where the inlet pressure acts on said seat area on the valve piston and in opposite direction to said spring element. What is novel about a regulating valve according to the invention is that the valve piston furthermore comprises a bore (9), such that the inlet pressure further acts through said bore on another area (11) and in the same direction as said spring element, and where said valve seat cooperating with the sealing element (8) and only one additional sealing element (12) between said valve piston and said valve housing are arranged at the inlet pressure side in the closed position.

Relevant specifications in the field of gas supply provide for different safety devices for installation in a gas-supply system, in particular, an acetylene-supply system. To provide such a safety device, which is characterized by a compact structure and a high level of operational reliability, this invention proposes that a valve body (1) incorporates an over-pressure valve (4; 104) of a quick-action shut-off device, a control valve (3; 103) of a pressure-limiting device, and a safety valve (2; 102), whereby the safety valve (2; 102) can be fluidically connected to the over-pressure valve (4; 104) and the control valve (3; 103), and closes either when the over-pressure valve (4; 104) opens due to an inlet pressure that is above the inlet-pressure limit value or when the control valve (3; 103) opens due to an outlet pressure that is above an outlet-pressure limit value.

A valve controls the discharge of fluid stored under pressure in cylinders (4) and includes a body (2) with a fluid inlet hole (3), a fluid outlet hole (5), and a sealing shaft (6) whose movement, determined by release means (7), opens or closes the fluid passage The release means (7) includes at least one pneumatic actuation hole (11) with non-return valve (12) and a hermetic chamber (10) associated with said sealing shaft (6), a pressure cartridge (8) of compressed gas associated with an electric and manual actuator (9) external to the body (2) and the hermetic chamber (10), which, transmits the motion to a rod (15) linked to said sealing shaft (6). A spring (16) tends to keep the sealing shaft (6) closed, when the pressure is zero or when the cylinder (4) is empty.

The improved hydraulic control valve includes a spool with a primary side piston having a rigid linkage with a secondary side piston. The primary side providing the ability to tap into an existing hydraulic system without altering the existing hydraulic system pressures or fluid volume. The secondary side piston and associated ports form a regulating assembly for control of the pressures of a hydraulic system and for providing feedback to the primary. The primary and secondary piston sizes may be stepped to create an appropriate amplification ratio for the required secondary brake system pressures in relation to the primary. Multiple secondary pilot signals and multiple primary pilot signals are also envisioned.

A fluid phase change thermal management cooling method for removing heat from a source of heat includes the steps of: filling a cooling chamber with volume V1 of a fluid phase change thermal management cooling apparatus with a fluid in its liquid phase; increasing the volume of the cooling chamber to volume V2 to vapourise a portion of the fluid from its liquid phase to its vapour phase such that there is substantially only the fluid in its liquid phase and fluid in its vapour phase within the volume V2; allowing a dwell time that provides for at least some of the fluid in its liquid phase that has contact with a heated surface of the cooling chamber to be vaporised; and repeating the steps where timing of the steps and dwell time between steps is selected to control heat build-up within selected limits.

Relevant specifications in the field of gas supply provide for different safety devices for installation in a gas-supply system, in particular, an acetylene-supply system. To provide such a safety device, which is characterized by a compact structure and a high level of operational reliability, this invention proposes that a valve body (1) incorporates an over-pressure valve (4; 104) of a quick-action shut-off device, a control valve (3; 103) of a pressure-limiting device, and a safety valve (2; 102), whereby the safety valve (2; 102) can be fluidically connected to the over-pressure valve (4; 104) and the control valve (3; 103), and closes either when the over-pressure valve (4; 104) opens due to an inlet pressure that is above the inlet-pressure limit value or when the control valve (3; 103) opens due to an outlet pressure that is above an outlet-pressure limit value.

One embodiment of a media handling system (5) is disclosed for mixing and or entraining grinding media (15) with a liquid media (10) for supply to a selected destination (D). In one form, the system (5) comprises a first media transfer module (30) configured operable for providing a flow of liquid media (10) having a respective flow condition to a first inlet (11) by way of which liquid media is receivable by the system (5). The system (5) comprises a second media transfer module (25) arranged in fluid communication with and downstream of both of the first inlet (11) and a second inlet (16) by way of which grinding media (15) is receivable by the system (5). The second media transfer module (25) is configured operable for supplying to the selected destination (D) a mixed flow of liquid and grinding media having a respective flow condition. In operation, one or both of the first (30) and second media transfer modules (25) are configured operable relative to the other for modifying one or both of the respective flow conditions so as to be operable or cooperable for facilitating a drawing or urging of a flow of the grinding media (15) into the system (5) via the second inlet (16) for controllably modifying a concentration of grinding media in the mixed flow of liquid and grinding media so as to converge toward and or substantially maintain a target concentration of grinding media (15) determined to be suitable for enabling supply of the mixed flow to the selected destination (D) by the second media transfer module (25).