Abstract: A control valve is provided that includes a valve body, a valve element, a first radial seal, and a second radial seal. The valve body forms an inlet, an outlet, and a fluid flow passage therebetween. The valve element is disposed at least partially within the valve body, and is movable between at least a closed position and an open position. When the valve element is in the closed position, fluid is restricted from flowing through the fluid flow passage. When the valve element is in the open position, the fluid is allowed to flow through the fluid flow passage. The first radial seal is disposed against the valve body at a first distance from a centerline of the control valve. The second radial seal is disposed against the valve body at a second distance from the centerline, the second distance being greater than the first distance.

Abstract: Disclosed is a one-way valve and sealing assemblage wherein an affixed curved pliant film device, a compressible spring, and a reciprocal curved channel surface automatically work cooperatively to permit forward material flow above a predetermined fluid pressure threshold yet check reverse material backflow at any pressure.

Abstract: The invention relates to a device for regulating a pressurised gas, said device including: a stopper (4) engaging with a seat (5) and capable of closing a pressurised gas passage; a so-called low-pressure chamber (29) downstream from the seat (5), the low-pressure chamber including a plate (27) to which the stopper (4) is coupled, and the plate being subjected to the force of a spring (30) housed in said chamber (29) and arranged concentrically relative to the seat (5) and the fastening means (28) thereof. The chamber (29) is defined by a diaphragm (26) in free contact with the plate (27). The opposite surface of the diaphragm (26) is subjected to the force of a spring (20) having a prestress which is adjustable via control means (13, 14). The control means are indexed according to two positions: a first prestress release position for ensuring the closure of the device at the stopper (4), and a second calibrated prestress position of the diaphragm (26) corresponding to the regulator operational position.

Abstract: A compact pressure regulator (10?) has a body (20?) having a fuel inlet (23) and a fuel outlet (25) defining a fuel chamber (22?). A valve seat (24?) is defined in the body at the fuel outlet. A valve element (26?) is movable between open and closed positions and has a seating surface (36) that engages the valve seat in the closed position. A housing (46) has a proximal end (56) coupled to the body with a distal end (58) of the body having a housing fuel outlet (60). A coil compression spring (40) is disposed between the valve element and the housing and is constructed and arranged to bias the valve element to the closed position. The valve element includes a spring engaging surface (50) that engages one end of the spring and the housing includes spring retaining structure (44) engaging the other end of the spring.

Abstract: The invention relates to a dosing system for a liquid reduction medium enabling precise dosing of the reduction medium in the exhaust gas system of an internal combustion engine. This is carried out particularly by using a quick and safe closing of a pressure-actuated dosing valve. Simultaneously, the dosing system according to the invention also enables the dissipation of the pressure impulses resulting due to the closing movement of the dosing valve.

Abstract: A pressure relief valve 1 having small dimensions and generating a high flow rate comprises an annular channel 15 between the pressure medium inlet 7 and the pressure medium outlet 8, the channel acting on a sealing cone 17 made of a special plastic material at the upper end of the closing unit 17 in case of pressure peaks such that the same is lifted out of the sealing seat 12 against the force of the valve spring 6. An embodiment is also possible in which the corresponding sealing rings 76, 80 must be passed over. The inner bore 9 of the pressure relief valve 1 has a stepped wall 21, so that a differential pressure relieving the valve spring 6 is generated.

Abstract: A pressure control valve including a valve housing having a first opening and second opening. The valve housing including a valve member configured to control gas flow between the first opening and the second opening. The valve member is supported by a first membrane and a second membrane, both of which are formed on a single-piece membrane body.

Abstract: A safety discharge system comprises a pressure relief valve having an inlet, designed to mate with an outlet of a heating appliance, and a relief outlet, wherein at least the inlet of the pressure relief valve and the outlet of the heating appliance include a threaded region, and wherein the threaded region is threaded with a reverse or left handed thread.

Abstract: The present invention relates to a door closer, and particularly to an air pressure inner circulation-type automatic compensation control door closer, comprising a cylinder body and a telescopic rod, wherein a one-way air intake valve means is provided at the other end of the cylinder body to take in air in one way in an internal cavity of the cylinder body when the door is opened, at one end portion of the telescopic rod in the interior of the cylinder body is connected a regulating valve means wherein the gas in the cylinder body flows cyclically in the cavity of the cylinder body when the telescopic rod in a moving state, an inner cover sealing means is fixedly provided inside the end cap, and a large compression spring is provided in a cavity between the inner cover sealing means and the regulating valve means; the internal cavity of the cylinder body is divided into two automatically pressurizeable and automatically compensatable gas cavities through the inner cover sealing means, the regulating valve me

Abstract: An exhaust check valve installed in an exhaust opening of a swash plate compressor comprises: a valve body having a refrigerant inlet and at least one refrigerant outlet; a movable body installed in the valve body and configured to move such that the refrigerant inlet and the refrigerant outlet communicate with each other; and a spring configured to push the movable body with a certain pressure. At least one refrigerant vent hole for venting a leak gas generated during an operation below a preset pressure difference to the outside of the valve body is formed in the valve body.

Abstract: Injection shut off valve devices and methods are provided for limiting flow and pressure from a pharmaceutical composition on injection. In some embodiments, the injection shut off valve is coupled to a syringe and can be used to monitor and avoid maximum pressures that can cause damage on injection.

Abstract: An enhanced fire prevention system includes a valve having three or more ports in which water is drawn from a source and diverted away from a water filtration system and directed towards a hose used to battle a fire. The valve includes a pressure relief assembly that is connected to and integrally formed within the valve. The valve may also be housed within a hydrant apparatus installed within an existing water main or irrigation lines.

Abstract: The present invention enlarges the working pressure flowing into the working chamber and improves the response ability of the valve controlling the fluid using a compact solenoid portion.

Abstract: A pressure relief valve is disclosed. The pressure relief valve comprises a body, a valve member, and a resilient member. The body includes a guide bore, a seat surface, an inlet, a first outlet, and a second outlet. The valve member is received within a portion of the body and includes a guide portion received within the guide bore, a valve seat configured to sealingly engage the seat surface, and an internal passage. The resilient member biases the valve seat into engagement with the seat surface. The valve member is moveable between a first position in which the inlet is fluidly blocked from the first outlet and the second outlet, a second position in which inlet is fluidly coupled to the first outlet but not to the second outlet, and a third position in which the inlet is fluidly coupled to the first outlet and the second outlet.

Abstract: The pressure relief valve of the instant invention allows automatic operation when over pressurization occurs and also allows the user to operate manually when required. Passages within the valve are minimized in length and an expanding cross-section outlet geometry is used to ensure that operation of valve is not hindered by dried material after initial use. A shield is also incorporated to ensure safe discharge in case of over pressurization.

Abstract: A pressure-controlled liquid supply system uses a pump control device to switch a pump on and off in response to a pressure level in the pumped liquid. The pump control device minimizes short cycling of the pump by preventing shut off of the pump while a flow is present through the pump control device and by delaying the shut off of the pump. The pump control device also avoids a significant drop in the output pressure by creating a reduced pressure zone, which provides the switch pressure used to switch the pump off.

Abstract: A relief valve device comprising: a valve body and a valve mechanism. The valve body includes a axial channel, an air inlet end and an air outlet end. The air inlet end is defined as one end of the valve body. The air outlet end is defined as the other end of the valve body. A first washer is mounted in the air inlet end. A second washer is mounted in the air outlet end. The valve mechanism includes a washer, a poppet, a torsion spring, and a ring. The washer, the poppet, the torsion spring and the ring are mounted in the axial channel of the valve body in sequence. The ring is mounted to restrict the torsion spring, the poppet and the washer in the valve body. Thus, the present invention can effectively lower the cost and be easy to assemble and manufacture.

Abstract: A gas flow monitor is to be created in which a defined value range of the closing or nominal flow rate can be set by changing the bias of the spring without changing the lift of the closing/valve body with a consequential concomitant reduction or enlargement of the flow gap. For this purpose, the gas flow monitor comprises a gas-tight housing (1), which has a valve seat (5) in its interior for an axially movable closing body (12), and a pin (11) at whose inlet side the closing body (12) is fastened, which with a stop (17) located at its outlet-side end by the force of a closing spring (15) is supported on a guide (6) disposed in the housing (1) on an outlet side by way of a tubular spacer (16). The guide (6) has in its center a sleeve (10), adjustable in an axial direction in which the pin (11) is guided in a longitudinally movable manner. The spacer (16) and the sleeve (10) are firmly connected to each other.

Abstract: A flush control valve core assembly is provided including a valve core body, a back spring accommodated in the valve core body, a valve piece and a valve shaft. The valve piece includes a discharge hole. A portion of the back spring extends as a pin structure, which is able to slidably move in the discharge hole. The pin structure is formed by a free end of the back spring horizontally bending towards the center, and then bending downwards vertically. The back spring of the flush control valve core assembly has a smaller size, which is more reliable and more easily mounted.

Abstract: A safety valve for a fluid circuit under pressure (P), the valve comprising a body (2), a piston (3) able to move with respect to the body between a closed position and a purge position. A thermally deformable element (5) acts to cause the piston to move from the closed position to the purge position above and beyond a purge temperature so as to connect the circuit to a discharge duct (16). The valve further comprises an overpressure relief device sensitive to the pressure of the fluid and configured to connect the circuit to the discharge duct when the pressure (P) of the circuit reaches a trip pressure.

Abstract: A vapor pressure equalization assembly having an underpressure relief assembly and an overpressure relief assembly in fluidic communication with the vapor space of a liquid storage tank (vessel). The underpressure and overpressure relief assemblies each have movable pistons sealingly engageable with respective sealing members, and biasing members which exert respective biasing forces to maintain the pistons in sealing engagement with the sealing members. A predetermined underpressure or overpressure differential between the vapor space pressure and atmospheric pressure will cause one of the pistons to open fluidic communication of the vapor space to equalize the vapor space pressure with that of the surrounding atmospheric pressure.

Abstract: A shaft furnace bleeder valve for controlling a gas outflow from the interior of a pressurized furnace to the ambient atmosphere through an exhaust conduit is proposed. The bleeder valve comprises a valve seat associated with the exhaust conduit, a movable closure member having a central closure surface and a peripheral sealing surface cooperating with the valve seat, the closure surface comprising a convex surface at least in proximity to the sealing surface. The valve further has an actuating mechanism, which is connected to the closure member for moving the closure member between a closed position on the valve seat and an open position distant from the valve seat.

Abstract: A variable device for regulating the outlet pressure of a fluid from a valve body, includes a pressure-sensing chamber having a wall formed by a resilient self-restoring diaphragm which is responsive to pressure in the chamber. A valve element connected to the diaphragm controls flow into the chamber. Increased pressure in the chamber decreases the flow into the chamber and decreasing pressure increases flow whereby fluid flow out from the chamber is maintained at a desired pressure. The outlet pressure is adjusted by deflecting the diaphragm in a direction to open the valve while permitting a section of the diaphragm connected to the valve member to remain responsive to the pressure in the chamber. An adjustment cover is provided to adjustably deflect the diaphragm and includes a catch mechanism to allow adjustment of the fluid outlet pressures and also retain the device at a desired value. An indicator arrangement may be provided to visually indicate the fluid outlet pressure.

Abstract: The present invention relates generally to methods and devices for providing a fire hydrant with a vented steamer port cap assembly to allow air and water to pass through an upper area of a fire hydrant. Various embodiments include hydrants with a vented steamer port cap assembly. In other embodiments, a secondary valve is included in the barrel of the fire hydrant to controllably allow liquid to flow through the hydrant.

Abstract: An adaptor for a water delivery device to reduce water wastage, wherein movement of a plunger over a first part of its stroke is controlled by an air flow control valve to provide a predetermined volume of water and movement over a second part of the stroke is substantially instantaneous such that water is not supplied for a significant length of time at a water flow rate that is not useful.

Abstract: A check valve includes a valve seat and a compliant member that moves to seal the check valve by contacting the valve seat. A method for priming a chromatography solvent pump includes providing the check valve in fluid communication with an outlet of the pump, drawing fluid into the pump from a fluid source, and expelling the fluid from the pump through the valve, thus wetting the check valve. Another method for priming a chromatography solvent pump includes providing the check valve in fluid communication with an inlet of the pump, drawing fluid through the valve into the pump, and expelling the fluid from the pump.

Abstract: A relief valve comprises a housing having a supply line inlet, for allowing fluid to enter the housing and a fluid supply outlet configured for allowing fluid to exit the housing. The fluid exiting the housing flows proximate and against a valve seat, thereby, flushing the valve seat. The relief valve also includes a relief outlet having an inlet region and an outlet region and a valve mechanism. The valve mechanism includes a valve seat configured for operation between a first, closed position closing the inlet region of the relief outlet inlet region thereby preventing fluid from exiting the relief outlet, and a second, open position opening the inlet region of the relief outlet inlet region, thereby allowing fluid to exit from the housing through the relief outlet.

Abstract: The invention relates to a check valve for a hydraulic power-assisted steering system, with a valve housing, into which a movable valve member is inserted, wherein the valve member interacts with sealing effect with a valve seat, and has lateral guide elements for guiding the valve member in the valve housing, wherein the movable valve member is a shaped metal part with uniform wall thickness and at least three guide elements having a constant width in the circumferential direction.

Abstract: A backflow prevention device includes a check valve including a valve body and a valve seat, an enclosure member retained by a peripheral member and arranged at a downstream side of the valve body, the enclosure member including an entrance facing an upstream side and being formed into a cylindrical shape having a bottom wall, the enclosure member into which the valve body is inserted via the entrance, the enclosure member having an inner diameter for guiding an outer periphery of the valve body, the upstream side corresponding to a direction where the fluid flows into the check valve while the downstream side corresponding to a direction where the fluid flowing into the check valve flows out therefrom, and a bypass passage provided at an outer periphery of the enclosure member, the bypass passage through which the fluid passing through a valve portion of the check valve flows.

Abstract: A hydro-pneumatic system has an air powered motor driving a hydraulic pump with a pressure limiting valve that turns off air flow to the air motor when a hydraulic pressure output by the pump at a sense port of the valve reaches a certain limit. A valve element of the valve has spring, hydraulic and pneumatic sections, with an unbalanced area of the hydraulic section in a sealed pressure chamber of a cartridge that is part of the valve housing. The pneumatic section extends out one end of the cartridge to fill a bore between the air inlet and outlet ports when the pneumatic section is extended, and allow air to pass when it is retracted.

Abstract: [PROBLEM] To provide a directional control valve assembly, in which a check valve for controlling a flow rate of pressure oil to be guided to a directional control valve as a main valve and a control means for limiting an opening degree of the check valve by a pressure are integrated with the directional control valve and therefore, a flow hardly occurs in the pressure oil that produces the pressure.

Abstract: A gas flow monitor is provided, in which a defined range of the closing or nominal flow can be set without engaging functional elements. Furthermore, the original closing or nominal flow can be adjusted or amended, even outside the manufacturing plant. The gas flow monitor consists of a gas-tight housing (1) which comprises an inner valve seat (5) for a closing member (9) which is displaceable within the housing (1) and is guided in a sleeve (6) in a longitudinally displaceable manner by a pin (7) and is held in the open position against the flow direction by the force of a closing spring (11). The housing (1) is connected on the inlet side to a tubular insert (13), the inner contour (14) of which determines the flow profile up to the valve seat (5).

Abstract: An LNG sampling system is provided which includes a sampling probe. The sampling probe includes a backflow prevention check valve positioned within the probe adjacent the inlet end. The probe is inserted into a source of LNG to extract samples of LNG by providing a pressure differential between the probe piping system and the pressure of the LNG within the source. In the event the pressure in the piping system increases above a predetermined amount, the check valve will close preventing backflow of LNG from the sampling system back into the source.

Abstract: The relief valve uses a slotted Belleville spring preloaded in a cage. The center area of the spring is closed and presses a hole in the bottom wall of the cage. The top wall of the cage is open and has a ledge against which the radial end of the spring presses. The relief valve is used in a hydraulic tensioner and positioned in the tensioner to have the bottom wall form a wall of the pressure chamber. When the pressure in the pressure chamber exceeds the pressure of the spring against the hole, fluid leaks out of the hole.

Abstract: A fluid filter is described, which includes a housing having a first end portion defining fluid inlet and fluid outlet areas, a filter media disposed in the housing, having inlet surfaces communicating with the fluid inlet and outlet surfaces communicating with the fluid outlet, and a relief valve assembly for selectively opening a filter bypass connecting the fluid inlet and the fluid outlet. The relief valve assembly has a media plug for anchoring it in the filter media, the media plug having a bypass aperture connecting to the fluid outlet, and a valve element secured to the media plug. The valve element has a valving portion cooperating with the bypass aperture in the media plug for resiliently closing the bypass aperture when an inlet fluid pressure is below a threshold pressure, and for opening the bypass aperture when the inlet fluid pressure is above the threshold pressure.

Abstract: A pressurizing and pressure regulating valve is provided. In one embodiment, the pressurizing and pressure regulating valve includes a sleeve, a first flow passage formed through the sleeve, a second flow passage formed through the sleeve, and a piston slidably disposed in the sleeve. The piston is configured to move between: (i) a pressurizing position wherein the piston impedes fluid flow through the first flow passage, and (ii) a pressure limiting position wherein the piston impedes fluid flow through the second flow passage. A sensing chamber is fluidly coupled to the first flow passage and configured to receive pressurized fluid therefrom. The piston is configured to move from the pressurizing position to the pressure limiting position when the pressure within the sensing chamber exceeds a predetermined minimum pressure.

Abstract: An improved check valve that can exhibit satisfactory sealing performance for hundreds of thousands of forward and reverse flow cycles under the severe conditions encountered in an application such as a carwash. The check valve may reduce the number of possible failure points found in conventional check valves and may reduce the risk of failure associated with other possible failure points that may not be eliminated.

Abstract: The invention relates to a safety valve (1) with an inlet (2) and an outlet (3) and a closing element (4) which seals the inlet (2) and moves under overpressure, thus opening a way from the inlet (2) to the outlet (3), wherein the closing element (4) is connected by at least one arm (5) to at least one spring element (6), against the force of which the closing element (4) moves during opening. According to the invention an arm (5) is provided, which connects closing element (4) and spring element (6), wherein the arm (5) is swivel-mounted respectively about an axis (7, 8) on the closing element (4) and on the spring element (6) and is rotatable around a further axis (9) arranged between the cited axes (7, 8) and is longitudinally displaceable with respect thereto, whereby an optimal adjustment of a spring force with respect to forces acting on the closing element (4) is given.

Abstract: A method and apparatus are provided for a cost effective pressure dampening device used in a fluid delivery system for substrate processing. In one embodiment, the pressure dampening device is disposed between a mounting substrate and a control valve within a fluid control assembly in fluid communication with a substrate processing chamber. The pressure dampening device is capable of dampening small pressure perturbations in a process fluid which is used for substrate processing.

Abstract: A variable device for regulating the outlet pressure of a fluid from a valve body, includes a pressure-sensing chamber having a wall formed by a resilient self-restoring diaphragm which is responsive to pressure in the chamber. A valve element connected to the diaphragm controls flow into the chamber. Increased pressure in the chamber decreases the flow into the chamber and decreasing pressure increases flow whereby fluid flow out from the chamber is maintained at a desired pressure. The outlet pressure is adjusted by deflecting the diaphragm in a direction to open the valve while permitting a section of the diaphragm connected to the valve member to remain responsive to the pressure in the chamber. An adjustment cover is provided to adjustably deflect the diaphragm and includes a catch mechanism to allow adjustment of the fluid outlet pressures and also retain the device at a desired value. An indicator arrangement may be provided to visually indicate the fluid outlet pressure.

Abstract: A pressure relief mechanism may utilize a casing that defines an internal cavity, a fluid inlet, and a fluid outlet. A first valve may reside within the internal cavity to permit fluid flow in one direction and further utilize a first valve carriage and a first valve spring that forces the first valve carriage against a first end of the casing internal cavity, over the fluid inlet. The first valve spring may reside against a second end of the casing cavity. A second valve may reside within the internal cavity and utilize a second valve carriage, a second valve body, and a second valve spring that biases the second valve body against the first valve body, the second valve permitting fluid flow opposite to the flow of the first valve.

Abstract: Pressure relief device (27) usable in a high-pressure fluid circuit for limiting the pressure in the case of a failure of a circuit component, comprising a body (4) and a pusher (3) sliding therein and axially movable by return means (5) in such a way that it drives sealing means (2) of an orifice (9) connecting an upstream chamber (7) receiving a high-pressure fluid and a downstream chamber (10) which is delimited by the body (4), the side of the pusher (3) and the perforated wall of said orifice (9), said upstream chamber (10) comprising at least one fluid discharge opening (12, 12?) and the sealing means (2) being held by the return means (5) in the position closing the orifice (9) below a predetermined pressure threshold in the upstream chamber (7).

Abstract: Rotary metering valve (200) with a valve inlet (260), a valve outlet (270) and a rotary valve member (280) for transferring a metered dose of aerosol formulation from the inlet to the outlet, wherein the rotary valve member is provided with an inlet port (290) and an outlet port (300), both in communication with a metering conduit (310) in the rotary valve member, the rotary valve member in sequence being rotatable between at least three positions: inlet position where the inlet port is in communication with the valve inlet and aerosol formulation enters the metering conduit, metering position where both ports are closed preserving a metered volume of aerosol formulation in the metering conduit, outlet position where the outlet port is in communication with the valve outlet and the metered dose of aerosol formulation is dispensed from the valve.

Abstract: To provide at low cost a check valve which is relatively lightweight and not limited in applicable range thereof, has a good sealing property, and exhibits excellent pressure resistance and durability, a valve chamber (5) is formed between a fluid inlet (3) and a fluid outlet (4) in a valve casing (2), a valve seat (7) is formed to have a valve hole (6) on a fluid inlet (3) side of the valve chamber (5), and a valve body (11) is provided in the valve chamber (5) so as to be movable in a direction in which fluid flows and to be brought into contact with the valve seat (7) from a fluid outlet (4) side, the valve body (11) including, when seen from the fluid inlet (3) side, a first valve body portion (11a) and a second valve body portion (11b) which respectively have a small diameter and a large diameter, the valve seat (7) including a first valve seat portion (7a) and a second valve seat portion (7b) with which the first valve body portion (11a) and the second valve body portion (11b) are brought into contact,

Abstract: A valve that includes a housing defining first and second bores having a central axis, and a peripheral valve seat. An actuator is located in the first bore and has a reciprocating seal disposed for movement along the central axis for engaging the valve seat and closing the valve. A coiled return spring is mounted in the housing for urging the reciprocating seal towards the chamber to open the valve, the return spring having a first end connected to the reciprocating seal and a second end engaging a spring support in the housing facing the first bore. The return spring may have a larger diameter at its second end than its first end. The housing may include a third bore in communication with the second bore and having a different cross-sectional area than the second bore. A closure cap formed from moldable material may close an opening in the housing, the closure cap being sealably joined to the housing by a welded joint.

Abstract: Valve, in particular for compressors, comprising a seat (1) provided with at least one flow way (111), an obturator member (4) able to obstruct said flow way (111) and movable with respect to said seat in a given direction, and means (5) for resiliently stressing said obturator (4), which are able to force said obturator (4) into a given position and are active in the direction of movement thereof; said resilient stressing means (5) comprise at least one cylindrical helical compression spring (5), characterized by the presence, between all the turns and along the entire working length of the spring (5), of inter-turn apertures.

Abstract: A control device for controlling a hydraulic consumer, is equipped with a distributing valve having a control pressure chamber and a control slide that can be displaced against the force of a spring by the build-up of a control pressure in the control pressure chamber. A pilot control valve controls the supply and discharge of control fluid into and out of the control pressure chamber. A release device is used to drive the control fluid out of the control pressure chamber, bypassing the pilot control valve.

Abstract: A check valve is for use in a fluid system. A valve body has an inlet end, a valve cavity, and an outlet end. A valve enables a valve assembly to control the flow of fluid therethrough. A plug of the valve assembly includes tapered and non-tapered sections, the tapered section having a cross section that increases in diameter in a direction that is downstream from the inlet end of the valve body. A sealing ring is mounted to reciprocate on the non-tapered section and an elastomeric actuation ring is mounted along the tapered section. The tapered section biases the actuation ring to a normal position, at which the actuation ring contacts and positions the sealing ring in contact with the valve body and the valve assembly to prevent fluid from flowing out the outlet end of the valve body.

Abstract: A priming valve device for a beverage machine. The device includes a casing assembly including a water inlet, a water outlet, and a drain and venting portion for discharging water or air during priming and a valve assembly associated with the casing assembly. The valve assembly includes a valve member which is moveable to a closed position which closes the water outlet by elastic return when the pressure in the water inlet decreases under the elastic return pressure of the valve member.

Abstract: A regulator comprises a regulator valve and an actuator. The regulator valve comprises a valve body equipped with a customized valve port. That is, the valve seat is designed to have a customized seat height depending on a diameter of an orifice through the valve port, a longitudinal dimension of an orifice through the valve port, and/or a flow capacity of the valve port. Such a design advantageously maximizes the efficiency at which gas flows through the regulator. The actuator is coupled to the valve body and comprises a valve disc disposed within the valve body and adapted for displacement between a closed position engaging the valve seat and an open position spaced from the valve seat.