Abstract: Provided is a high-pressure tank that includes a tank main body including a mouthpiece, a valve fitted to the mouthpiece, and a pipe extending from the valve in an axially inward direction of the tank main body and for ejecting a gas into the tank main body. The pipe includes an ejection nozzle provided at an end of the pipe and for ejecting the gas, a first bent portion located between the ejection nozzle and the valve and extending in a direction inclined relative to an axial direction of the tank main body, and a second bent portion having the ejection nozzle and extending in a direction inclined relative to the axial direction. One of an inclination angle of the first bent portion relative to the axial direction and an inclination angle of the second bent portion relative to the axial direction is larger than 0° and not larger than 90°, and the other is not smaller than ?0° and smaller than 0°, when the pipe is viewed in a direction perpendicular to the axial direction.

Abstract: A gas pressure regulator for use with gas delivery systems is provided. The gas pressure regulator includes, in one form, a body defining a proximal end portion, a distal end portion, and a central portion having a longitudinal axis extending therethrough. An inlet is disposed proximate the distal end portion of the body, the inlet defining an inlet axis extending therethrough, and the inlet axis being offset from the longitudinal axis. A cavity is disposed within the central portion of the body, and defines an upper portion and a lower portion, the cavity centrally aligned with the longitudinal axis. The gas pressure regulator further includes a channel extending between the inlet and the cavity, and a guide disposed within the lower portion of the cavity in abutment with a bottom surface of the cavity substantially perpendicular to the lateral axis.

Abstract: A gas pressure regulator for use with gas delivery systems is provided. The gas pressure regulator includes, in one form, an inlet with an entry portion and a bottom portion. A pocket is disposed proximate the bottom portion of the inlet, and a cavity is disposed within a central portion of the gas pressure regulator. A guide is disposed within a lower portion of the cavity, and a flow of gas through the gas pressure regulator extends through the inlet, changes direction to flow through the cavity, and the flow of gas changes direction to impact the guide prior to flowing through the cavity. The pocket and the guide reduce the amount of particles capable of reaching internal components of the gas pressure regulator, resulting in low sensitivity and high fault tolerance to ignited particles coming through the gas pressure regulator in the event of accidental particle contamination.

Abstract: A water pressure regulator includes a sealing member and a body having a diaphragm assembly. The diaphragm assembly is positioned and secured within the body to define first and second chambers. The diaphragm assembly has a force acting thereon from within the second chamber. The first chamber defines first and second zones and a passageway therebetween. An inlet of the body is configured to provide water to the first zone and an outlet of the body is configured to deliver water out of the second zone. The sealing member is positioned within the first zone. The sealing member seals the passageway by a force of the water in the first zone acting upon the sealing member and by a gravitational force acting upon the sealing member. The sealing member is formed in the shape of a spherical ball. The water pressure regulator may be used in a watering system.

Abstract: A device (1; 101) for controlling the flow of a fluid through a conduit (2; 102; 402; 602; 702) from an upstream side (3; 103; 703) to a downstream side (5; 105; 405; 605; 705), the device (1; 101) comprising: a valve having a valve member (14; 114; 414; 514; 614) arranged to move reciprocally selectively to open and close one or more valve apertures (10; 110; 412; 512; 611, 612), thereby controlling flow of the fluid from the upstream side (3; 103; 703) to the downstream side (5; 105; 405; 605; 705); and means for introducing a reference pressure (24; 124; 324; 424; 524; 624); wherein said valve member (14; 114; 414; 514; 614) is acted on by the pressure of the downstream side (5; 105; 405; 605; 705) and the reference pressure so as to be moved by the difference between said pressures.

Abstract: A pressure regulating valve includes a device body and an actuator. The device body includes a valve seat member, a valve, which is capable of closing the first opening of the valve seat member, an urging member, which urges the valve toward the valve seat member, a piston arranged opposite to the valve across the valve seat member, an actuator, which adjusts the position of the piston, and a protrusion provided on at least one of the piston and the valve. When the tip end of the protrusion comes into contact with the piston or the valve, the second opening of the second fluid passage is closed. When the tip end of the protrusion is not in contact with any of the piston and the valve and the second opening is opened, the second fluid passage is in communication with the pressure regulation chamber.

Abstract: An electromagnetic pressure regulating valve includes a valve body and causes a valve body to move by an electromagnetic proportional solenoid to adjust an opening degree of a valve passage, thereby regulating secondary pressure to target pressure. A pressure return chamber is formed in the housing, and a diaphragm seal is provided at the valve body. The diaphragm seal receives the secondary pressure of the pressure return chamber to cause the valve body to move toward a closed position. A bearing member is provided between the valve body and the housing. In a gap between the valve body and the housing, a high-pressure sealing member is provided closer to the valve passage than the bearing member, and a low-pressure sealing member is provided closer to the bearing member than the high-pressure sealing member. A buffer chamber connected to a secondary port is formed between the sealing members.

Abstract: In a decompression valve, a valve mechanism housed in a body has a valve body that can be seated on a valve seat facing a valve chamber into which high pressure fluid is introduced, and a valve shaft that has one end linked to a pressure receiving member operable in association with pressure of a decompression chamber communicating with a valve hole surrounded by the valve seat and that extends through the valve hole while having the other end facing a back pressure chamber communicating with the decompression chamber, and the valve body is fitted around the outer periphery of the valve shaft.

Abstract: The apparatus uses an electrical signal controlled valve, for instance, a proportional solenoid controlled valve, controlled by a controller, to control a pilot operated valve for regulating pressure of fluid in a port thereof in connection with a fluid operated system. A pressure sensor in connection with the port is used to monitor the regulated pressure. The regulated pressurized fluid in the port is also used, as required, as a component of the pilot signal. The valves are configured such that when the electrical control signal is absent or the electrically controlled valve is unresponsive thereto, the presence of pressurized fluid at a predetermined supply pressure, will automatically operate the pilot operated valve in cooperation with a biasing element thereof, for delivering pressurized fluid at a minimum or reduced regulated pressure.

Abstract: A heating system can include certain pressure sensitive features. These features can be configured to change from a first position to a second position based on a pressure of a fuel flowing into the feature. These features can include, fuel selector valves, pressure regulators, burner nozzles, and oxygen depletion sensor nozzles, among other features.

Abstract: A system for hydraulically managing fluid pressure between selected set points includes a pilot control system operably coupled to a main valve. The pilot control system includes at least one fluid conduit, a variable orifice assembly, and a control pilot valve apparatus. Fluid is passed through a fixed orifice and into a first chamber of the control pilot valve apparatus. Fluid is passed through the variable orifice of the variable orifice assembly and into a second chamber of the control pilot valve apparatus. The main valve is hydraulically opened or closed in response to a pressure differential between the first and second chambers of the control pilot valve apparatus so as to manage fluid pressure downstream of the main valve between the selected upper and lower set points.

Abstract: A pressure reducer having a high pressure inlet, a low-pressure outlet and a valve having a valve seat and a cooperating movable piston valve. With displacement of the piston valve away from the valve seat, a path between the high pressure inlet and the low pressure outlet is opened. In addition, a closing force caused by a low pressure acts on the piston valve towards the valve seat during operation of the pressure reducer. A spring is also provided for the purpose of exerting an actuating force on the piston valve to move away from the valve seat in the valve opening direction. A solenoid coil is configured to exercise a magnetic force superimposed on the closing force or the actuation force acting on the valve piston.

Abstract: A pressure relief valve includes a base including a fluid inlet and outlet, a nozzle, and a disc. The nozzle includes a substantially annular seat, a substantially cylindrical seat inlet, and a substantially cylindrical bore in fluid communication with the seat inlet. A ratio between a bore diameter and a seat diameter is a constraint ratio. The disc contacts the seat to seal the fluid inlet to substantially prevent fluid communication between the fluid inlet and outlet when the valve is closed. The disc and the disc holder are adapted to be urged by fluidic pressure such that contact between the disc and the seat is removed at the fluidic pressure to allow fluid communication between the fluid inlet and the cavity. Dimensions of the disc, the disc holder, and the nozzle may be functions of the seat diameter and limited by the constraint ratio.

Abstract: A fluid supply device includes a fluid supply source, a valve, a differential-pressure generator, and a pressurizing device. The valve includes a casing, a displacement member that divides an inside of the casing into a first valve chamber and a second valve chamber, the displacement member being displaced by a pressure of a fluid being exerted on a front main surface and a back main surface of the displacement member, a first opening provided in the first valve chamber, a second opening provided in the first valve chamber, and a third opening provided in the second valve chamber. Thus, flow rate fluctuations are reduced even when the pressure on the ejection side or the suction side of the device fluctuates due to changes in atmospheric conditions.

Abstract: A multifunction relief valve includes a relief chamber having an introduction port and a relief port for introducing and relieving pressure fluid; a back pressure chamber formed on one end side of the relief chamber; a piston which is movably provided in the back pressure chamber and divides the back pressure chamber into a first back pressure chamber and a second back pressure chamber; a first spring which is provided in the first back pressure chamber and exerts a biasing force in a direction in which the relief port is closed; a second spring which is provided in the second back pressure chamber and biases the piston in the direction in which the relief port is closed; and a pilot pressure supply port formed in the first back pressure chamber. The pressure fluid introduced into the first back pressure chamber via the pilot pressure supply port changes the relief pressure.

Abstract: A control valve comprises a valve housing (1) having an inlet side (17) and an outlet side (18). The control valve also has a pressure maintaining arrangement for maintaining a constant differential pressure between the inlet and outlet sides, as well as an amount control arrangement for setting the maximum flow through the valve. A pair of cylinder shells located in the flow path have cooperating recesses which provide an uncovered area forming an opening (25). One cylinder shell is rotatable relative to the other cylinder shell by a rotatable handle (13), whereby a larger or smaller opening (25) between the cooperating cylinder shells may be provided. Both cylinder shells are axially displaceable within a seat hole (8), resulting in an increase or a decrease of the opening (25).

Abstract: A pilot device cooperates with a gas pressure regulator suitable for use in gas distribution systems and consists of: a head with two chambers separated by a first membrane, one chamber at the gas pressure regulator outlet pressure and the other at atmospheric pressure; a body with elastic means and an axial thrust unit acting on the first membrane and cooperating with a regulation unit having at the inlet a supply pressure and at the outlet the motorization gas which is transferred to the motorization chamber of the gas pressure regulator. The pilot device features a tank having a wall with a further membrane provided with the mechanical elastic setting means. Gas is conveyed into the tank with a load pressure to modify the thrust of the elastic setting means. The device has a closed compensation chamber at atmospheric pressure, having the further membrane in common with the tank.

Abstract: A monodirectional intake pressure stabilization structure of pneumatic tool includes a tool main body and a pressure stabilization unit. The pressure stabilization unit is disposed in a first directional intake passage formed in the tool main body for controlling the pressure of the air guided by the first directional intake passage into an air chamber of the tool main body. Accordingly, excessively great intake pressure can be avoided so as to avoid over-torque output of the pneumatic tool. In this case, the pneumatic tool can stably output power within a safety range in accordance with the requirements of actual use. The pressure stabilization unit can be a pressure stabilizer or a pressure relief valve.

Abstract: The inventive technology, in embodiments, may include a controller configured to coordinate operation of valves and remotely controllable regulators that are fluidically communicative therewith, allowing the control of positioners of positioner zones that are fluidically communicative with such remotely controllable regulators. Preferred embodiments may find application as, e.g., a pneumatic system to control positioners, whether such positioner find use in bottling applications or elsewhere. Additional aspects of the inventive technology may relate to methods for pressurized fluid positioner control.

Abstract: A pressurized gas containing system has a cowling and mounting ring which supports a valve and regulator on a cylinder containing gas under pressure.

Abstract: The present invention relates to a pressure reducing apparatus. A diaphragm made from an elastic material is provided in the interior of a body. The diaphragm includes a main body portion having a seat member that is capable of being seated on an inner tubular member of the body, a retaining portion disposed on an outer peripheral side of the main body portion and which is slidably displaceable with respect to the inner tubular member, and a skirt that is retained on a flange of the body. Additionally, by flexing of the skirt by means of an elastic force of a spring, the seat member thereof separates away from the inner tubular member.

Abstract: A system and method for controlling fluid pressure downstream a main valve includes associating a variable orifice with the main valve such that the variable orifice opens as the main valve is opened and closes as the main valve is closed. A fluid stream taken from a fluid inlet of the main valve is passed to an inlet of the variable orifice. A fixed orifice is in fluid communication with an outlet of the variable orifice. A pressure differential between the inlet and outlet of a fixed orifice is detected by a control pilot device, which hydraulically opens or closes the main valve in response to the detected fixed orifice pressure differential between low pressure and high pressure set points.

Abstract: A fuel supply system includes a fuel pump for supplying fuel in a fuel tank to an engine, a pressure regulator and a three-way valve disposed in a valve chamber. The pressure regulator includes a pressure regulating chamber and a control pressure chamber and adjusts a fuel pressure in the pressure regulating chamber depending on a fuel pressure in the control pressure chamber. A control pressure passage for flowing the fuel to the control pressure chamber and the valve chamber is formed in a unit case.

Abstract: A snow making apparatus of the low profile snow gun type or of the tower type having independent and co-extending air and first water conduits supported above ground. Air and first water discharge nozzles are connected to the upper ends respectively of these conduits for producing a plume of atomized water from external interacting air and water discharge under pressure from the air and water discharge nozzles to produce snow in sub-freezing ambient conditions. A second water conduit co-extends with the air and first water conduits and a second water discharge nozzle is connected to the upper end of this second water conduit in the head of the snow gun or tower for discharge of additional water under pressure to ambient atmosphere through this second water discharge nozzle.

Abstract: An air compressor utilizing an electronic control system. A pneumatically controlled regulator is provided for controlling output pressure for an air compressor. Digital gauges are provided on the air compressor to replace conventional mechanical gauges. A variable speed motor is used, which in turn varies the speed of the pump. Tools are provided for an air compressor that are capable of transmitting a signal to the air compressor indicating a desired pressure and/or motor speed at which the air compressor is to operate.

Abstract: A pressure regulator having a housing that defines a gas inlet, a gas outlet, and a reference pressure connector. A diaphragm is provided in the housing, where the diaphragm defines, at least in part, a reference pressure chamber. In some illustrative embodiments, the reference pressure connector fluidly references the reference pressure chamber to a first pressure via a first orifice, and to a second pressure via a second bleed orifice. A gas valve incorporating a pressure regulator is also disclosed.

Abstract: A gas pressure regulator comprises a main body having a first, gas inlet pipe and a second, gas outlet pipe, a calibrated gas passage through which gas flows from the first pipe to the second pipe, a shutter housed at least partially in the main body and mobile lengthwise along a first defined line to adjust the opening of the calibrated passage, a device for actuating the shutter and a regulator spring unit opposing the movement of the shutter.

Abstract: A device for regulating the delivery pressure of gases includes a valve unit having at least one valve seat and a respective closure element displaceable along an axis with respect to the valve seat which is controlled by a diaphragm. The device further includes a first spring which acts on the diaphragm in order to subject it to a preselected resilient load. A second spring is selectively activated to exert an additional resilient load on the diaphragm. The device includes a handle associated with the first and second springs in order to impose selectively the desired delivery pressure value, between a minimum value and a maximum value of pre-calibration, the pressure value being proportionally correlated with a predetermined resilient load exerted on the diaphragm.

Abstract: A pressurized gas containing system has a cowling and mounting ring which supports a valve and regulator on a cylinder containing gas under pressure.

Abstract: Gas pressure regulator valve adapted to a household appliance for the supply of a flow of NG or LPG gas that comprises a valve body (11) with an inlet conduit (12), an outlet conduit (13) of the gas at a nominal pressure, a pressurised chamber (14) connecting both conduits through a regulation valve (39,40), a diaphragm (22) connected to the valve member (39), a closure cap (26) and means (26-29,19,23,35) for the adjusting of the nominal pressure for NG or LPG gas. The adjusting means include a prestressed adjusting screw (35) on the diaphragm (22), a guide means (28) of the rotation on the cap (26) and a stopper means of the rotation on the body (11). The pressure value is adjusted by the rotation of the cap between two positions.

Abstract: A pressure controller device includes a housing accommodating a precision pressure regulator incorporating a first diaphragm operable upon a main valve provided between an inlet and an outlet in the housing. The regulator further includes a second diaphragm operable upon a flapper-nozzle arrangement to set the pressure of the working fluid discharged through the device. The housing further includes a resiliently loaded shuttle actuable by an operating handle connected thereto and externally protruding from the housing to operate the second diaphragm and the flapper-nozzle arrangement. Manual operation of the handle, and resulting linear movement of the shuttle, effects movement of the second diaphragm and the flapper-nozzle arrangement and thus by pressure fluid to operate the first diaphragm and thus the main valve. Consequential variation in the pressure of the fluid delivered by the device is thus achieved by the shuttle overriding the operation of the diaphragms and thus the valve.

Abstract: The invention relates to a gas regulator which is intended to be mounted on a gas delivery pipe connecting a gas source to a user device. The inventive regulator comprises a pressure regulation mechanism which is controlled by the movement of a mobile element. The invention is characterised in that it comprises a casing housing at least one adjustable prestressed actuator which acts on the aforementioned mobile element and which can be used to take account of the altimetric pressure variation.

Abstract: It is an object of this invention to provide a gas fuel supply system in which a controllable range in the fuel injection quantity control by an injector is enlarged. According to one preferable aspect of this invention, the gas fuel supply system comprises an injector provided in an intake pipe of an internal combustion engine, a fuel supply passage for supplying the gas fuel to the injector, and means for controlling pressure of the gas fuel supplied to the injector through the fuel supply passage by using negative pressure in the intake pipe such that the pressure of the gas fuel increases if the negative pressure in the intake pipe decreases, and the pressure of the gas fuel decreases if the negative pressure in the intake pipe increases.

Abstract: A regulator for use with fuel cells, which is mounted in a pressure controller of a fuel cell system, has a first diaphragm flexible under the pressure of pilot air supplied as an oxidizing agent to a pilot chamber, a second diaphragm flexible under the pressure of a hydrogen-containing gas flowing through a fluid passage, and a rod connected to a valve head. The spring force of a first spring is set to a value greater than the spring force of a second spring. The regulator is of a normally closed type in which the valve head is seated on a valve seat when the pilot air is not supplied to the pilot chamber.

Abstract: The present invention provides a pressure control apparatus for controlling the pressure at an output port without reducing the effective sectional area by controlling a main valve through the switching operation of a small-sized directional control valve, wherein the main valve has any of the following functions, i.e. a function of-providing a valve full-open position, a function of reducing pressure, and a function of providing a valve full-closed position. When a diaphragm chamber is placed at the secondary pressure by switching the directional control valve, the primary pressure is reduced by the main valve, and a predetermined reduced pressure is outputted. When the diaphragm chamber is at the primary pressure, the main valve is fully closed. When the diaphragm chamber is at the atmospheric pressure, the main valve fully opens, and hence the primary-side fluid flows to the output port as it is.

Abstract: A fuel vapor pressure regulator by which the input pressure of an input fluid is regulated by the opening and closing of a valve unit controlled by a piston pressure sensor, the operation of which is, in turn, controlled by a movement of a preset bias, the output pressure of the fluid delivered by the regulator, and a biasing pressure that reflects the operating demands of the utilization unit to which the fluid is delivered.

Abstract: There is provided a pilot valve (50), suitable for use in water and gas supply systems, the valve including biassing means (57), to control a gate (55), for controlling fluid flow through a control chamber (51), and a second chamber (52), which is sealed by a diaphragm (53), the second chamber (52), in use, receiving a control pressure for controlling the operation of the gate (55), such that an increase in control pressure acts to reduce fluid flow through the gate (55). The side of the diaphragm (53), against which the control pressure is not applied, is in fluid communication with the control chamber (51).

Abstract: A back pressure valve, comprises: a first housing including a first chamber formed therein having an inlet and an outlet for a first fluid; a second housing including a second chamber formed; a flexible diaphragm having an outer peripheral edge portion abutting the second housing; and closing off the second chamber; a back pressure member moveably disposed in the first chamber of the first housing, wherein the first chamber is defined by the first housing and the back pressure member; wherein the flexible diaphragm is fixed onto and moveable together with the back pressure member, whereby pressure in the second chamber determines fluid pressure required to maintain the back pressure member in a steady position.

Abstract: A regulator valve has a housing with a seal member therein. First and second plungers are movable in the housing toward and away from the seal member. The plungers are sealed to the housing and have passages therethrough. The plungers are biased toward the seal member by fluid pressure at the housing outlet end. The plungers are biased away from the seal member by a spring. First and second diaphragms connected to the plungers engage the housing inner wall in sealing engagement so that fluid must flow through the passages. The diaphragms and housing define an expansion chamber. A port in fluid communication with the expansion chamber allows selectable introduction of pilot pressure into the expansion chamber to force the first plunger into engagement with the seal member and prevent flow through the passages. In an embodiment of the regulator valve, the water inlet may be oriented at some divergent angle with respect to a water outlet such as 90 degrees.

Abstract: An electronically modulating gas valve comprising a modulating solenoid for simultaneously displacing two servo regulator diaphragms, one for controlling LP Gas outlet pressure and another for controlling Natural Gas outlet pressure. A switch is used to select operation with either Natural or LP Gas, wherein the switch activates a gas selection solenoid for controlling gas flow through the Natural Gas servo regulator and the LP Gas servo regulator. The servo regulators are factory adjusted for a maximum Natural Gas pressure setting and a maximum LP Gas pressure setting. Thus, the gas valve is convertible from Natural Gas to LP Gas without re-adjustment.

Abstract: A hand-held power tool for use in hand working operations including a hand pressure sensing element for adjusting the power of the tool. More specifically, the invention provides a hand engraving power tool that is activated from absence of power to much greater power or anywhere in between determined by the amount of pressure exerted by a human hand on the tool's handle.

Abstract: A dispensing assembly for automatically adjusting the carbon dioxide level in beer in a draught beer keg (1), said dispensing assembly comprising a beer tap (3) to be placed in the outlet opening (2) of the draught beer keg, a tapping cock (5) connected to said beer tap, a reducing valve (9) communicating with the beer tap (3) and a carbon dioxide compressed air cylinder (7) which in turn communicates with the reducing valve (9). The low pressure side of the reducing valve (9) is directly connected to a gas channel (3a) in the housing of the beer tap (3), said gas channel communicating with the interior of the keg. The reducing valve (9) is a needle/cone valve, where the valve body is controlled by a bellows device (30) arranged in the housing of the valve and including a closed control gas mixture (21) which at least includes carbon dioxide.

Abstract: A measuring device for gas flows including a gas regulator positioned immediately upstream of a volumetric meter for determining the volume of a gas passing therethrough. The measuring device includes means for modifying the pressure of the gas expansion at the regulator output based on the temperature of the gas.

Abstract: Gas supplying apparatus and gas substitution method where machinery and parts constituting the gas system are not damaged, and where gas substitution in the gas system is carried out in a short time with good efficiency.

Abstract: A single stage regulator is disclosed wherein a piston-type configuration is utilized to regulate an input working pressure as high as 4,500 PSI, to an output delivery pressure from 200 PSI to 1100 PSI. The single stage regulator can be used on paintball guns, markers and similar devices powered by compressed gas.

Abstract: A fluid pressure regulator and method of operating the same particularly adapted for use in alternating flow and no flow modes as in the batchwise delivery of pressurized gases used in semiconductor manufacture. Such pressure regulator and method include a controlled differential pressure setting capability which provides for the application of a differential pressure setting force independently of a main pressure setting force. As a result, operation of the pressure regulator may be controlled to obviate pressure creep at the regulator outlet.

Abstract: A pressure limiting valve includes an inlet and an outlet for a fluid, which includes a valve body which cooperates with a valve seat in such a manner that it opens or closes a flow connection for the fluid between the inlet and the outlet when a limiting pressure is reached. The valve also includes a spring element which acts on the valve body and loads the latter. A container for a liquid is provided which is arranged and designed in such a manner that through its thermal expansion, the liquid varies the loading of the valve body which is caused by the spring element, and thus varies the limiting pressure in dependence on the temperature of the liquid.

Abstract: A two-stage fluid pressure regulating valve has a solenoid operated lever for moving a regulator shaft between two positions. The regulator shaft biases the regulator spring of a flow rate control diaphragm valve. When the solenoid is actuated the lever is pivoted, applying increased force to the regulator spring, to change the valve set point to its higher pressure output. A return spring returns the arm to the low pressure set point when the solenoid is de-energized. A pair of adjustable stops are positioned for engagement by the lever and forming limits for its motion, for independently adjusting the low and high pressure set points for the valve.

Abstract: A returnless fuel regulator includes a diaphragm assembly dividing the regulator into a control chamber for calibration purposes and a fuel chamber in communication with fuel under pressure from a supply and a fuel rail which receives fuel under regulation pressure. The regulator includes a spring-biased valve element which is opened to a greater or lesser extent by movement of the diaphragm assembly. In the diaphragm assembly, a post is spring-biased into a predetermined position relative to the diaphragm assembly to engage the valve element. The spring is formed of a shape memory alloy which elongates in response to a predetermined temperature of the fuel within the regulator to open or further open the valve element.

Abstract: Gas pressure regulator valve adapted to a household appliance for the supply of a flow of NG or LPG gas that comprises a valve body (11) with an inlet conduit (12), an outlet conduit (13) of the gas at a nominal pressure, a pressurised chamber (14) connecting both conduits through a regulation valve (39,40), a diaphragm (22) connected to the valve member (39), a closure cap (26) and means (26-29,19,23,35) for the adjusting of the nominal pressure for NG or LPG gas. The adjusting means include a prestressed adjusting screw (35) on the diaphragm (22), a guide means (28) of the rotation on the cap (26) and a stopper means of the rotation on the body (11). The pressure value is adjusted by the rotation of the cap between two positions.