A control member for use in a fluid control device is disclosed. The control member may include a through-bore for receiving a valve stem and one or more counter-bores aligned with the through-bore. One of the counter-bores may receive a connection member, such as a retaining nut, for connecting the control member to the valve stem. Accordingly, the connection member may be concealed within the control member and thus prevented from interfering with the fluid flow around the control member. Also disclosed is a fluid control device incorporating the control member and a method of assembling a fluid control device incorporating the control member.

A balanced port pressure regulator includes a valve body having a fluid inlet and a fluid outlet connected by a fluid passageway, an orifice being disposed between the fluid inlet and the fluid outlet. A valve seat is disposed within the fluid passageway. A valve plug is also disposed within the fluid passageway. A piston is disposed within the valve body, the piston separating the fluid passageway from a balancing chamber. A sleeve extends away from the piston, the sleeve forming a balancing passage that fluidly connects the fluid passageway with the balancing chamber. The sleeve includes an open end that terminates within the orifice. By terminating within the orifice, the open end of the sleeve generates boost only towards the end of a valve opening cycle when the valve plug approaches a fully open position, which is where boost is most needed.

A regulator includes a body, a first cage positioned in the body, a diaphragm positioned within the body, and a second cage operatively connected to the diaphragm. The body has an inlet, an outlet, and a passage formed between the inlet and the outlet and the first cage is positioned adjacent the passage. The second cage moves with the diaphragm and is positionable on a first side of the diaphragm, opposite the first cage, or on a second side of the diaphragm such that the second cage is positioned within the first cage and is movable relative to the first cage.

A flow and pressure stabilization device comprises a housing; a first fluid chamber; a gas chamber; a deformable bladder that separates the first fluid chamber from the gas chamber and at least partially defines a volume of the first fluid chamber; a second fluid chamber in fluid communication with the first fluid chamber via a fluid passage; and a variable flow valve in fluid communication with the second fluid chamber, the variable flow valve comprising: a fluid port in fluid communication with a fluid outlet; a deformable diaphragm positioned adjacent the fluid port, the diaphragm at least partially defining a volume of the second fluid chamber; and an outflow control button coupled to the diaphragm and extending at least partially into the fluid port, the outflow control button comprising an at least partially tapered surface.

A pressure reducer includes a housing, defining upstream and downstream pressure chambers. A valve is positioned in the housing and includes a diaphragm acting on a valve tappet. The valve includes a valve body fastened to the valve tappet and cooperating with a sealing element. The valve body has a cylindrical, hollow-cylindrical, or conical contour and forms a sealing surface effective in the radial direction. The sealing surface is interrupted at at least one circumferential position by a flow channel, such that, depending on a pressure drop in the downstream pressure chamber, either the sealing element lies against the sealing surface and completely closes a flow region between the sealing element and the sealing surface or the sealing element is removed from the sealing surface and completely opens the flow region or the sealing element lies against the sealing surface and partly opens the flow region exclusively by the respective flow channel.

Disclosed is a method and a unit (10) for the regulation or control of a fluid pressure, having at least one housing section (13, 14) and a switching film (22) connected to the at least one housing section (13, 14) for switching at pressure differentials of 1 to 250 mbar, preferably from 1 to 100 mbar, relative to an ambient pressure acting on the switching film (22), and for the regulation, release or blocking of a flow of the fluid between an inlet (28) and a discharge (30) for the fluid. The switching film (22) is made out of a polymer material having fluorine and carbon. In this arrangement, a hole cross-section (40) of the at least one housing section (13, 14) is closed off by the switching film (22).

A burner includes: an adaptor to which a fuel supply box for supplying fuel is connected, and having a fuel inlet; a combustion part configured to perform combustion while fuel injected from the fuel inlet is discharged through a flow path; a connection housing disposed between the adaptor and the combustion part, having a fuel supply path communicated with the fuel inlet, and configured to feed fuel of the fuel supply box to the combustion part; an inflow fuel control part provided at one side of the connection housing, and configured to control the amount of fuel injected by controlling an open degree of the fuel inlet; and a feed fuel control part provided at another side of the connection housing, and configured to control the amount of fuel supplied to the combustion part by controlling an open degree of one side of the fuel supply path.

A valve poppet (54) is provided for use in a regulator valve assembly (200) for regulating the pressure of a flowing gas through a gas flow pressure regulator (300). The valve poppet is includes a valve disc (54) having a flexible portion (60a) so as to permit upward and downward movement of a valve stem (52) in an axial direction. The valve disc may have an edge portion (60b) that provides a preloading force to self-align the valve disc within a valve seat (70), and axially constrain the motion of valve stem. The valve stem (52) may extend perpendicularly relative to the valve disc from a sealing portion (58). The movement of the valve stem is axially constrained and results in upward and downward movement of the flexible portion when the valve is opened and closed. The flexible and end portions of the valve disc may be formed of a plurality of spiral arms for self-aligning and axially constraining the valve disc.

A control member for a fluid regulating device. The control member includes a top side and a bottom side. The top side is adapted to engage a valve seat of the fluid regulating device when the control member is arranged in a closed position. The control member also includes a means for reducing a suction force exerted on the bottom side of the control member by fluid flowing proximate to the control member. In one example, the means takes the form of a rim that extends outwardly from the bottom side to a position below the bottom side. The rim is configured to reduce a downward force exerted on the bottom side of the control member by directing fluid flowing through the fluid passageway away from the bottom side of the control member.

A control member for use in a fluid control device is disclosed. The control member may include a through-bore for receiving a valve stem and one or more counter-bores aligned with the through-bore. One of the counter-bores may receive a connection member, such as a retaining nut, for connecting the control member to the valve stem. Accordingly, the connection member may be concealed within the control member and thus prevented from interfering with the fluid flow around the control member. Also disclosed is a fluid control device incorporating the control member and a method of assembling a fluid control device incorporating the control member.