Abstract: A valve for water sprinklers and the like, with an inlet and first and second outlets, has a hinged clapper biased to close the second outlet but held closing the first outlet by a dosing device after delivery of a given volume of liquid through the first outlet. The dosing device includes a chamber communicating with the inlet via a flow regulator. Filling of the chamber with liquid moves a piston extended by a rod cooperating with the clapper.

Abstract: A Venturi is formed in a portion of the passage of a metal tube by drilling an opening in the downstream part of the tube wall at that portion and deforming the metal at the upstream part of the wall inwardly by a cold flow of the metal so as to define a step in that portion with the opening at the downstream end of that step.

Abstract: A vapor fuel control apparatus adapted to be connected between a gasoline tank and a filter-supporting canister of a fuel supply system to an engine, comprising a main body, first valve means movably disposed within the main body and forming a first valve member therewith, second valve means movably disposed within the first valve means and forming a second valve member therewith, first spring means interposed between the main body and the first valve means urging said first valve means to move in one direction, and second spring means interposed between the first valve means and the second valve means urging said second valve means to move in the opposite direction, and both of first and second spring means holding the closing states of the first and second valve means at respective preset values.

Abstract: The butterfly valve vane is constructed with a main vane portion and a movable servo tab. The servo tab is controlled to open relative to the main vane portion in order to define an auxiliary flow path so that the flow forces acting on the vane create a substantially zero closing moment. The servo tab can be moved by a linkage means integrally connected with the control shaft on which the vane is mounted or can be moved by a separate actuator.

Abstract: A fuel filter bypass valve assembly includes a valve body having inlet and opposite sides. A movable member is peripherally sealed to the opposite side, and moves toward and away therefrom to define a variable volume chamber. Port means extends past the valve body for establishing communication between such chamber and the valve body inlet side. Yieldable biasing means is connected with the movable member for normally biasing same toward the valve body opposite side and biasing the entire assembly in a direction for positioning the inlet side against a valve seat. Cooperating stop means between the movable member and valve body limits movement of such movable member away from the valve body opposite side. The movable member and valve body are proportioned so that the pressure required to move the movable member away from the valve body against the force of the biasing means is substantially less than the pressure required to move the valve body away from the valve seat against the force of the biasing means.

Abstract: A sliding gate valve has a sliding plate provided with an under-hung insulating member having a hollow nose, the hollow nose having a tapered bore in which a molten metal resistant liner is cemented, the liner being tapered to fit the bore and a frangible cement being used to detachably secure the liner in the nose so that the liner can be readily replaced when worn.

Abstract: A shut-off valve for the automotive fuel system is operable to shut off the fuel flow whenever a positive pressure exists in the fuel line between the fuel tank and the shut-off valve. The shut-off valve may be employed in combination with a fuel pump or may be employed separately in the fuel line and comprises a flexible diaphragm connected by a stem directly to the valve member and movable with the valve member. The diaphragm air chamber has an air vent controlled by a vent valve providing a relatively large opening for bleeding in air and providing a relatively small opening for exhausting air from the diaphragm air chamber. The vent valve thus permits a relatively fast movement of the valve member to an open position and a relatively slow or restricted movement of the valve member toward a closed or partially closed position.

Abstract: A novel emergency flow shut off device for fluid control systems particularly adapted for use in adverse marine environments. In normal operation the valve spool is continuously exercised by a reversing fluid pressure differential as fluid reversibly flows through the valve. External means are provided to conveniently monitor movement of the spool and thereby assure that the spool is free to shut off flow in a sudden emergency. Fluid cushioning means are provided at the end of the spool emergency shut off stroke to prevent damage to the valve. In a typical application the vertical motion of an offshore drill ship on the ocean swells causes oscillating flow in the fluid control system thereby automatically exercising the valve.

Abstract: A safety-pressure-vacuum relief valve assembly for vehicle fuel tanks and the like which is adapted either to be mounted at an external point on the vehicle and connected to the interior of the tank by a conduit or to be a part of the cap for the conventional tank filler neck. The assembly comprises a fitting having an upwardly facing annular flange area concentric with the axis of the fitting, a circular plate concentrically resting on the flange, an inverted cup providing a peripheral skirt having a concentric and peripherally extending shoulder above the flange, the cup and fitting being secured against axial separation to capture the said plate therebetween, and an annular flexible gasket having an outer peripheral portion gripped between the plate and the shoulder of the cup and an inner peripheral bead engaging the upper surface of the plate normally to close pressure relief openings in the plate.

Abstract: An air volume regulator for use in an air distribution duct for maintaining a substantially constant volume flow of air therethrough and having a pair of spaced apart opposing airfoils positioned so as to define a passageway for the flow of air therebetween, with the airfoils being pivotally mounted adjacent their leading ends with trailing portions extending in the downstream direction. The flow of air between the opposing airfoils exerts a force over the surface of the airfoils to pivotally move the same relative to each other so that the size of the air passageway between the airfoils is varied in response to fluctuations in upstream pressure to thereby maintain the flow of air from the regulator substantially constant.

Abstract: A hydraulic control valve body is pre-cored for selective adaptation to provide a first valve assembly having two independent circuits or a second valve assembly having a single circuit with either a series-parallel or interrupted series function.

Abstract: A control valve apparatus adapted to be positioned within a subsea blowout preventer stack for controlling the flow of fluid from an offshore well includes a control unit releasably latched to a valve body having tandem, normally closed valve assemblies, the upper valve assembly including a flapper valve element and the lower valve assembly including a ball valve element. The control unit has hydraulically operable mechanisms adapted to open the valve elements in response to pressurization of control lines extending upwardly to the surface, and to assist in closure of the ball valve element to effect cutting of wireline or cable extending into the well in case of emergency.

Abstract: A water mixing valve comprising a fixed valve seat and a valve plate which is slideable over the valve seat, means providing two modes of slideable movement of the valve plate with respect to the valve seat, one being a shifting movement and the other a rotational movement, and a porting arrangement in the valve seat and a cooperating system of passages in the valve plate, permitting shifting of the valve from a full on to a full off position at any desired mixture of hot and cold water, and permitting positioning of the valve to obtain changes in temperature of the water without change in volume, and changes in volume of the water without change in temperature.

Abstract: The check valve comprises an integral body of elastomeric material of generally exterior hemispherical shape with an annular flange portion on the base of the hemisphere. An inlet passage is formed in the base and terminates within the hemispherical portion, there being provided a cut from the end of the inlet passage to the outer periphery of the hemispherical portion defining a slit of given dimensions. This slit is formed at an acute angle to the plane of the base of the hemisphere; that is, the plane normal to the axis of the inlet passage. The geometry of the configuration is such that the slit will open to pass fluid either liquid or gas from the inlet to the exterior of the body when a differential pressure of the fluid across the body is exceeded and collapse or close when the differential pressure reverses to block reverse flow of fluid through the body.

Abstract: A combinaton washer-dryer laundry machine having a washing, extraction and drying operations. There is included in the machine a rotatable drum for tumbling the clothes, a liquid pump for removing liquid from the machine, a vacuum blower for extracting liquid, and a heater and blower to be utilized during the drying operation. The vacuum blower is structurally arranged to help reduce noise.

Abstract: Apparatus utilizes two or more orifices in series, fixed normal to the flow field, which provide a pressure reservoir from which the static pressure is sensed for the purpose of sensing variations in flow within a tube. The apparatus comprises a plurality of orifices, flow regulators, pressure repeaters and electrical pressure switches all connected so as to function as a complete system.

Abstract: A hydraulic installation with means for storing energy produced by the prime mover during a rest period of the installation. Energy is stored by a fluid accumulator by suitable positioning of control valves during the reset period. Control of the valves is effected by a logic circuit responsive to pressure in the accumulator, pressure in the main feed conduit leading to the driven device, and the position of a feed conduit control valve.

Abstract: A valve assembly kit permits the assembling of a plurality of different slide valves each having an elongated housing element formed with a main passage, fluid passages communicating with the main passage, and fluid ports which also communicate with the main passage, and an elongated valve spool element slidably receivable in the main passage. One or both of these elements comprises a plurality of diverse but interchangeable components which can be coaxially assembled in different sequences so as to obtain a selectable configuration of the respective element.

Abstract: A main valve has a housing, a valve member slidable in the housing and defining at its opposite ends two pressure chambers, a high-pressure port and a low-pressure port of which one communicates with one of the chambers, a throttle connecting the chambers and a spring acting in the other chamber upon one end of the valve member and urging the same from a blocking position towards a rest position. A control valve has a fluid line which communicates with the other of the chambers for selecting a main-valve response pressure. A first set of passages connects the ports with one another via the one chamber when the valve member approaches the rest position thereof, and a second set of passages connects the chambers with one another when the valve member approaches its blocking position.

Abstract: An unloader type valve for spray guns supplied from pumps to limit operating pressures of the pump when the spray gun is stopped. The valve utilizes an adjustable spring to select pressure forces for opening the valve and a variable flow passage from the valve to an outlet when the valve is open, the allowing matching of the valve to the precise operating pressures and flow rates in spray gun and pumping system installations.