Abstract: A method of manufacturing a valve with a corrosion-resistant barrier includes providing a valve body defining a first end, a second end, and a body bore extending from the first end to the second end, the valve body further defining a channel co-annular with the body bore, the channel comprising an outer edge defining a seat retention groove; and thermal spraying a corrosion-resistant barrier over the seat retention groove, the corrosion-resistant barrier defining a first edge and a second edge, the first edge oriented between the seat retention groove and the first end of the valve body, and the second edge oriented between the seat retention groove and the second end of the valve body.

Abstract: A fluid container has a first and second flexible membrane forming at least one chamber, a channel configured to receive pressurized inert gas, and one or more check valve assemblies disposed therebetween. The one or more check valve assemblies is formed from a continuous third flexible membrane folded at an apex, and configured to provide the flow of pressurized fluid in one direction upon inflation, from the channel to the at least one chamber, while restricting flow in the opposite direction. The one or more check valve assemblies are characterized in that they do not require pre-printing or electronic registering, thus allowing for an inflation flow rate of at least twice that of conventional inflatable packaging systems.

Abstract: A fluid immersion control system may use a common electrode along with a plurality of sensor electrodes at a planar surface associated with a distal end of an immersion microscope objective to monitor electrical resistance of a fluid as an indication of presence of a fluid layer having a meniscus greater than a diameter of an optical axis used for immersion microscopy. The fluid immersion control system may activate replenishment of the fluid when the resistance indicates that the diameter is not immersed in the fluid.

Abstract: An anti-surge recycle valve system for a natural gas line using a pipeline rotary control valve for controlling gas flow through the gas line and a valve controller having a surge-programmable feature including a threshold setpoint deviation limit, which is used to control first and second control valve loops. The first solenoid valve loop drives a rotary high-pressure piston actuator when the linear position sensor determines a setpoint deviation in gas flow below the threshold deviation, and the second solenoid valve loop drives the rotary high-pressure piston actuator when the linear position sensor determines a setpoint deviation in gas flow above the threshold deviation. The system provides ultra-rapid stroking speed in tandem with highly accurate and stable positioning.

Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.

Abstract: A one piece vent formed from one integral piece of material, such as Aluminum, and which defines a fluid pathway therethrough having a borehole within said fluid pathway, and further including a groove that retains a roto clip therein so as to secure a ball and a float within an interior of the vent, the float movable between a sealing position on said borehole and an unsealed position away from said borehole.

Abstract: A switching valve includes a valve body, a diaphragm, and a driving assembly. The valve body includes a valve cavity, a water inlet, a first water outlet, and a second water outlet in communication with the valve cavity. The diaphragm includes two unsealing parts connected with the driving assembly and respectively arranged opposite to the first water outlet and the second water outlet. Each unsealing part can control opening or closing of the first water outlet or the second water outlet. The driving assembly can individually drive each of the unsealing parts to switch between opening and closing such that at least one of the first water outlet and the second water outlet is in an open state.

Abstract: Technologies are described for a diaphragm. The diaphragm may comprise a structure. The structure may be a disc shape with a top and bottom side. The top and bottom sides may be circular in outline. The diaphragm may comprise a diaphragm stud at a center point on the top side. The diaphragm stud may be configured to couple with a connector of a bonnet assembly. The diaphragm may comprise a diaphragm bead on the bottom side. The diaphragm bead may be along a first axis. The diaphragm may comprise at least one tab which may extend radially from the structure along at an outer edge of the structure. The at least one tab may engage with a bonnet notch of a bonnet assembly to align the diaphragm to the bonnet assembly.

Abstract: An injection valve for introducing fluids into a subsurface environment includes a valve housing including a conduit having an inlet and an outlet. A valve seat is arranged in the valve housing. An anti-rotation dart is arranged in the valve housing adjacent the valve seat. The anti-rotation dart includes a valve element that is selectively engageable with the valve seat. An anti-rotation feature is provided on at least one of the valve seat and the anti-rotation dart. The anti-rotation feature constrains rotation of the anti-rotation dart relative to the valve seat.

Abstract: A butterfly valve includes a body and a gear box cover, the body having a fluid conduit and a gear platform supported on and over the fluid conduit, the gear platform configured to support a gear assembly for actuating a valve disk between an open position and a closed position, the gear box cover defining an internal cavity, the internal cavity sized to house the gear assembly, the gear box cover configured to be removably mounted to the platform such that the internal cavity is between the gear box cover and the platform.

Abstract: A fluid handling device includes a first channel, a second channel, and a valve disposed at a connection part between the first channel and the second channel. The valve include a partition wall disposed between the first channel and the second channel, and a diaphragm disposed so as to face the partition wall, a portion of the first channel, and a portion of the second channel. The diaphragm is configured in such a way that when no pressure is applied to the diaphragm, a gap, which serves as a third channel that allows the first channel and the second channel to communicate with each other, is formed between the diaphragm and the partition wall. In plan view, the length of the diaphragm in the extending direction of the third channel is longer than the length of the diaphragm in the direction orthogonal to the extending direction.

Abstract: A drainage device includes a conduit extending from a bottom end toward a top end and a valve coupled to the conduit. The valve includes a first stop having an opening and an obstruction within the conduit. The obstruction, in a first configuration, may be spaced apart from the opening, enabling fluid to flow through the first stop and through the conduit. The obstruction, in a second configuration, may block the opening to prevent fluid flow through the first stop and through the conduit. The obstruction may move from the first configuration to the second configuration in response to (1) fluid pressure acting in a direction from the bottom end toward the top end of the conduit, or (2) when a fluid having a higher density than the obstruction is disposed within the valve.

Abstract: Disclosed is an armature for receiving a sensor for measuring a medium in a container. The armature includes a hollow cylindrical housing designed to connect the armature to the container at least sectionally in the container. The housing includes first and second openings through which medium flows in or out; a service chamber formed in the interior of the housing between the first and second openings; a rotationally movable closing element in the housing, which, in a first position, opens the first and second openings to the medium and, in a second position, blocks a flow through the first and second openings; a sensor holder; and the sensor arranged on or in the sensor holder. The sensor holder is designed such that the sensitive element is arranged in the service chamber in the measuring/service position.

Abstract: A valve seat for a ball valve. The valve seat having a valve seat body with a circumferential concave seating surface configured to mate with a curvature of the valve ball. A seal pocket formed within the valve seat body, the seal pocket having (i) an throat formed in the concave seating surface, (ii) an outer pocket sidewall, and (iii) an inner pocket sidewall. A retaining groove positioned below the throat on either the outer pocket sidewall or the inner pocket sidewall and a flexible seal element shaped for positioning in the seal pocket. The seal element includes (i) an extended lip configured to rest within the retaining groove when the seal element is seated in the seal pocket, and (ii) a sealing face with an upper end laying below the valve seat's concave seating surface and a mid-portion extending upward above a curvature path of the concave seating surface.

Abstract: A valve includes: a drive; a plunger connected to the drive; and two closing bodies connected to the plunger and movable by the plunger such that the two closing bodies are movable into abutment against respective sealing seats or away from the respective sealing seats. The two closing bodies are arranged fixedly on a sleeve, and the sleeve is slidable onto the plunger and connected fixedly to the plunger.

Abstract: The invention relates to a hydraulic proof test assembly comprising at least a valve (1) with parallel seats (102). It comprises: a shut-off member (2) with parallel plates (20, 21), connected by connecting means for regulating their separation, to make them go from a first position in which this separation is sufficient to enable the shut-off member (2) to be introduced into said valve (1) to a second position where said separation is greater, this separation making it possible to apply them firmly against said parallel seats (102); a device (3) for inserting said shut-off member (2) into said valve (1) which comprises at least a “U” shaped tool, configured to be introduced into said valve (1), its parallel arms forming guides, while its base forms a support for retaining said shut-off member (2); a “dummy stem” (4).

Abstract: Valves and valve assemblies are described herein employing architectures which can mitigate degradative wear mechanisms, thereby prolonging life of the assembly. In one aspect, a valve comprises a head including a circumferential surface and a valve seat mating surface comprising sintered cemented carbide. Leg members extend from the head, wherein thickness of one or more of the leg members tapers in a direction away from the head to induce laminar fluid flow around the head. In some embodiments, the sintered cemented carbide is an inlay coupled to the valve head.

Abstract: An appliance includes an appliance unit having a housing with the housing having steam emission holes, a heater in the housing, a primary water tank in the housing, and a cradle that is removably connectable to the appliance unit. The cradle has a secondary water tank that can communicate with the primary water tank when the appliance unit is connected to the cradle.

Abstract: A ventilation component (1a) is to be attached to a housing (2) at a ventilation opening (5). The ventilation component (1a) includes a gas-permeable membrane (10), a ventilation valve (20), and a structural member (30). The structural member (30) has an inner space (40), and at least one of a first ventilation path (51) and a second ventilation paths (52). The inner space (40) is a space accommodating the gas-permeable membrane (10) and/or the ventilation valve (20). The first ventilation path (51) allows the inner space (40) to communicate with an external space of the ventilation component (1a). The first ventilation path (51) has a first inner opening (51i) and a first outer opening (51e), and the first inner opening (51i) faces the first outer opening (51e). The first inner opening (51i) and the first outer opening (51e) are present along a plane parallel to an outer surface (2s) of the housing.

Abstract: A riser for a surface irrigation system has a housing and an outlet valve. The housing has an open upper portion and an outlet defining an orifice. The valve includes an upper closure, a valve member, and an actuating lever. The upper closure is securable to the riser. The valve member is coupled to the closure and mountable within a flow path of the fluid, the valve member operable for opening and closing the valve, and configured to seat against a valve seat of the housing, and on an upstream side of the orifice, whereby the pressure of fluid within the valve urges the valve member against the seat when the valve is closed. The pivotable actuating lever having one end extending through the orifice and coupled to the valve member, and an operable end for operating the valve member to open and close the valve.