Abstract: A bypass valve to be connected in line with a gas service line conducting gas from a gas meter to the corresponding residence or commercial building includes an open ended tubular fitting forming a flow chamber therein having a flow inlet end and a flow outlet end and an auxiliary port formed thereon to allow for access to the gas service line by an auxiliary gas source. An open ended poppet cage is mounted internally in the flow chamber and has one end thereof connected to the auxiliary port and further has a number of ports formed in the side wall thereof defining cage outlets. A poppet comprising a cylindrical center body with enlarged-in-cross section disks at the opposite ends thereof is disposed inside the poppet cage and has free axial movement therein.

Abstract: Multiphase fluid flow, such as gas and water, is controlled to provide splitting the flow from a supply conduit into one or more branch conduits with a predetermined gas-to-liquid ratio in the branch conduits by providing a flow mixing device interposed in the main conduit at the intersection of the main conduit with the branch conduits and a variable area orifice provided by a sleeve type closure member to effectively regulate the gas-to-liquid ratio entering the branch conduit. Gas to liquid ratios may be varied by providing the branch conduits as swivel connections to the main conduit so that the entry portion of the branch conduit may be oriented vertically upward or downward or at a selected position in between. Gas-to-liquid ratios may be measured by flowmeters and differential pressure gauges located upstream and downstream of the intersections of the branch conduits with the main supply conduit or manifold.

Abstract: The module contains a tubular filter cartridge within an enclosure and a fuel pressure regulator mounted on an end wall of the enclosure. The fuel pressure regulator is entirely self-contained allowing it to be a mass-produced part that can be used in various module configurations having differently shaped enclosures and differently shaped filter cartridges. In the illustrated embodiment, the pressure regulator separably mounts on the exterior of the end wall of the enclosure. A retention ring that has certain features is used to mount the pressure regulator with a tight fit on the enclosure end wall. The enclosure also has features for a tight fit in the socket of a fuel pump module into which the pressure regulator/filter module is inserted when used.

Abstract: A drain valve for replacement of drain plugs or drain valves to facilitate the quick drainage of fluid from an equipment. The drain valve has a tubular housing assembly having a threaded section to be threaded into a threaded drain hole and a hexagonal nut section for assisting in mounting or removing the tubular housing assembly to threaded into or from the drain hole. A valve stem assembly has a valve stem which extends through the tubular housing assembly and has an actuator which an operator can push to open the drain valve. A compression spring disposed between the valve stem assembly and the tubular housing assembly provides a force on the actuator to force the drain valve into a closed position. Inlets in the valve stem permit fluid to flow through a drainage bore in the valve stem when the drain valve is in the open position.

Abstract: A differential pressure regulator connected in a fluid system including a bypass line and including a valve body with a high pressure inlet and a compensation inlet connected to the high pressure side of the system, a low pressure inlet, and a bypass outlet. A valve member is reciprocable within the valve housing and includes an intermediate passage between the compensation inlet and the bypass outlet, a metering port between the intermediate passage and the bypass outlet, and a compensating port between the compensating inlet and the intermediate passage. The position of this valve member controls the degree of opening of the ports. Also included is spring biasing the valve toward the closed position of the ports. The high and low pressure inlets are coupled to high and low pressure faces on the valve member, and the resulting forces act with the spring force to adjust bypass flow to achieve the substantially constant pressure drop.

Abstract: The invention involves an apparatus for the induction and admixture of additives into a fluid stream by means of a joining piece, whereby a plug projects into the fluid stream and blocks a major part of the stream cross-section. This plug exhibits, in the area of the flow-through gap, an opening that is joined with a connecting conduit for the additive that is to be inducted. It is fundamental that the gap cross-sections for the fluid steam on both sides of the plug are of differing sizes.

Abstract: A flow regulator valve that is intended particularly for positive-displacement pumps for auxiliary power steering systems in motor vehicles contains in a valve borehole (1) a flow regulator piston (3) that is guided in an axially movable and sealing manner. Inside flow regulator piston (3), there is arranged a pressure limiting valve (18) whose closing body (19) is pressed against a valve seat (22) by the force of a spring (21). The force of spring (21) is adjusted by a headless pin (23) which--in its adjusted position--is secured with respect to flow regulator piston (3) by a locknut (25).

Abstract: An improved plastic valve body design and construction which has strength and durability similar to that of steel valve bodies but with significantly reduced manufacturing time and cost. The valve body comprises a unique and nonobvious combination of a previously unused plastic material and a complex rib design that results in performance similar to that of steel valves. The valve body is preferably comprised of Delrin or a nylon/Kevlar composite material. A plurality of ribbed members connect outer and inner faces of the valve body to provide increased strength and durability. The plastic valve body has the ability to deform to mate with the valve seat and thus extrusion gaps are eliminated. This allows use of more desirable softer polyurethane inserts.

Abstract: A spiral flow connector imparts a spiral flow of air to urge parts being transmitted toward a central axis to avoid contact with the walls of the transmission passages of a pneumatic transmission apparatus. The invention is especially useful for preventing damage to fragile parts such as small resin molds, metal parts or powdered material. The spiral air flow prevents air stalling in the transmission passages.

Abstract: A valve assembly is provided to control a flow of liquid through a drain conduit from a sink in an aircraft. When the aircraft is in an inactive condition on the ground, a fluid motor presses a main valve member lightly against a main valve seat. At this time, liquid in the drain conduit can leak past the main valve member. However, at this time, the main valve member is effective to block a reverse flow of odors through the drain line into the cabin of the aircraft. When the aircraft is operating in the air above the ground, the motor presses the main valve member against the main valve seat with sufficient force to seal the drain conduit and prevent the leakage of fluid past the main valve seat. When a predetermined amount of liquid has accumulated in the drain conduit upstream from the main valve seat, a motor control assembly effects operation of the motor to move the main valve member away from the main valve seat to allow the liquid to flow through the drain conduit past the main valve seat.

Abstract: An adjustable metering valve (10) includes an upper housing (12) and lower housing (16) that cooperatively define an internal valve chamber (30) having an inlet end (80) and an outlet end (42). An inlet port (20) opens into the inlet end of the valve chamber, and an outlet port (24) provides for fluid flow exiting the outlet end (42) of the valve chamber. A floating piston (106) is slidably mounted within the valve chamber between the inlet and outlet ports. A seal (114) is provided between the piston and an interior side wall (44) of the valve chamber to prevent fluid flow past the piston except through an internal passage (118) through the piston. A valve seat (38) is mounted in the housing within the outlet end of the valve chamber, upstream of the outlet port. A valve pin (36) is carried by a pin assembly (34) that is threaded into the internal passage of the piston.

Abstract: A linearly adjustable fluid damper of the sliding plate adjustable orifice type damper system having a fixed plate with a plurality of specifically arranged hexagonal shaped apertures therethrough and a slidable adjustable plate also having a plurality of specifically arranged hexagonal shaped apertures therethrough. The sliding plate is juxtaposed the fixed plate such that the apertures of the sliding plate overlap apertures of the fixed plate with center lines bisecting the top and bottom sides of apertures in both plates coinciding. The area of the resultant hexagonal composite orifice through both plates varies non-linearly from full closed position to full open position throughout movement of the sliding plate, however, the result is that fluid flow from zero to maximum through the resultant orifice is a straight line relationship with linear displacement of the sliding plate.

Abstract: A chemical injector valve connected to a source of water under pressure harnesses the venturi effect to entrain liquid chemicals into a water stream and employs a variable size pressure chamber to ensure that the flow rate and quantity of chemicals entrained remains constant even when the pressure of water entering the valve varies widely. An increase in incoming water pressure causes expansion of the variable size pressure chamber and a decrease in incoming water pressure causes contraction of the variable size pressure chamber. A slidably mounted piston is biased toward the variable size pressure chamber so that the size of the pressure chamber does not increase unless the accumulation of water in the chamber exceeds the bias acting on the piston. When the bias is exceeded, a shank of the piston moves toward a piston stop and the flow of water into the valve is throttled.

Abstract: A valve for a hydraulic damper comprising a flat circular disc(s) with a central axial opening wherein the disc(s) has a spring characteristic tending to maintain the disc in a flat shape and tending to return the disc(s) to the flat shape when forces deflect the disc(s) from the flat shape, and a disc retainer having a predetermined axial length, a circular cylindrical shape, a central axial opening, axially coextensive with said axial length, a perimeter wall around an outer perimeter of the retainer, an axial wall around a perimeter of the axial opening wherein the perimeter wall has a first diameter, an annular portion inside of the perimeter wall characterized by a shape having a continuously varying curvature arcuately rotated completely around the retainer axis, wherein during a high velocity event, the disc(s) deflects against the retainer and a load between the disc(s) and the disc retainer is spread along the disc(s) surface wherein excessive localized straining of the disc(s) is prevented and where

Abstract: A pneumatic membrane switch includes a body having an opening and a valve disposed within the opening. An actuator stem extends from the end of the valve, and the actuator stem is adapted to open the valve when moved inwardly with respect to the valve body. A flexible membrane covers the opening and is shiftable between standby and actuate positions. The membrane contacts and moves the actuator stem inwardly to open the valve when the membrane is shifted to the actuate position.

Abstract: A system, device, regulator and process for gas blanketing under precise gas pressure control is provided herein exhibiting extreme pressure sensitivity, position flexibility, smooth gas shutoff, for regulating the pressure of liquid storage vessels having vapor phases therein, and optionally being useful for gas blanketing of other units requiring positive gas pressures therein, such as pressurized rooms, duct, housings, such as computer housing, and the like, at pre-selected pressures of between 0.01 inches of water column and 15 inches of water column, with pressure sensitivities responsive to pressure changes of 0.01 inches of water column within a predetermined pressure set point. The system is compact, self contained, and requires no external source of power other than the supply pressure, which can range from about 10 psig to 1,000 psig. The system, device and regulator are not position sensitive, and may be properly operated in any orientation.

Abstract: The profile of the valve stop of a discharge valve is configured such that the portion facing the free length of the valve member has a first fixed radius portion and a second, larger fixed radius portion. The valve has a leg portion and a valve head with said leg portion tapering and widening in the direction of the valve head so as to have an increasing spring rate.

Abstract: An adjustable-rate flow regulator, including a split housing having an inverted-cup-shaped upper half connectable to a source of liquid to be dispensed, the upper half having a wall and a downward-facing bottom surface provided with an inlet port, and a lower half rotatably engaging the upper half, the lower half having a neck portion of reduced diameter and a recessed upper face having, at the bottom thereof, a control port leading to the consumer of the liquid. The regulator further includes an elastically deformable diaphragm seated on an annular step in the recess and defining with the bottom surface of the upper housing half a first chamber, and with the bottom of the recess in the lower housing half, a second chamber, and a tubular flow attentuator made of an elastomer, rotatably seated on, and fluid-tightly surrounding, the neck portion of the lower housing half, but non-rotatable relative to the upper housing half.

Abstract: A flow control apparatus comprises a base body, first and second gas passages provided in the base body for passing gas therethrough, gas flow adjusting mechanism, provided so as to connect the first and second gas passages to each other, for adjusting the flow of gas passing therethrough, and gas flow control unit for outputting a flow control signal to the gas flow adjusting mechanism so as to control the flow of gas passing through the first or second gas passage. In the base body, a bypass passage is formed in the base body for connecting the first and second gas passages to each other, and a valve mechanism is employed for opening and closing the bypass passage. When a trouble has occurred, the valve mechanism is opened, and a purging gas is supplied through the bypass passage to purge a flammable or noxious gas. Thereafter, the gas flow control apparatus is removed and repaired.

Abstract: A valve assembly for automatic venting of excess suction or pressure in a fluid conduit such as a sewage drain line. An elastomeric diaphragm is drawn by a stressed stem against a valve plate having a passageway therethrough which is normally closed by the diaphragm. A predetermined differential pressure across the diaphragm will lift the diaphragm away from the plate to open the passageway.