Abstract: The present invention relates to technical field of faucet, specifically to an induction type pulling faucet, including a faucet body, a valve core, a handle, and a pulling shower head. A water inlet tube, a pulling tube, and an induction control valve are mounted in the faucet body. The pulling tube is connected to pulling shower head and valve core respectively. The valve core is connected to water inlet tube and the handle respectively. An infrared sensor and a magnetic sensor are mounted in faucet body, which are both electrically connected to the induction control valve via electric wire. A strong magnet is mounted in the pulling shower head. The present invention identifies magnetic field changes between the pulling tube and the pulling shower head by setting magnetic sensor to achieve induction control of water path switch, and increase convenience of using the induction type pulling faucet.

Abstract: Portable natural gas distribution systems for dual fuel fleets such as hydraulic fracturing fleets are described.

Abstract: The invention relates to a pressure maintaining gas cylinder valve. It consists of a pressure retaining device: The axis of the pressure retaining device and that of the valve element are in the same vertical plane; the pressure retaining device has a mounting base, a spring and a valve are located in the mounting base: the valve is in the valve element near the air outlet; the front section of the valve is near the air outlet, while the rear section of the valve is in the mounting base; the spring is between the valve and the mounting base. Because the invention has no eccentricity, the gas channel is smoother and the volume of the cylinder valve is greatly reduced. The mounting seat of the pressure retaining device not only provides support for the valve and spring, but also ensures that the stroke of the valve element is not interfered.

Abstract: Provided is a monitoring system for a milling facility, which includes a plurality of grinders including roll mills for grinding a material to be milled and sifting machines for sifting, according to grain size, the material to be milled as ground by the roll mills; and a plurality of pulverizers including roll mills for pulverizing the material to be milled and sifting machines for sifting, according to grain size, the material to be milled as pulverized by the roll mills. The material to be milled is milled by each of the grinders and pulverizers. A plurality of flow rate measuring devices are provided on respective flow paths for product flours discharged from the respective sifting machines in the respective grinders and pulverizers, and a monitoring device capable of monitoring presence or absence of an abnormality based on measurement results on respective flow rates of the product flours is provided.

Abstract: The invention relates to a head (2) for a tank (1) used to store pressurised gas, comprising, in an integrated manner: at least two components (131, 132) for treating, distributing and/or shutting off the gas; an upstream connector (20) suitable for being removably attached in a boss (4) of the tank (1); and downstream outlet pipes (211, 212) suitable for connecting the head (2) to any system using said gas by means of the aforementioned components (131, 132). According to the invention, each component (131, 132) comprises at least two sealing devices (141, 142) defining an intermediate space therebetween, and at least one pipe (12), called tapping pipe, connects each of the intermediate spaces and a common space (8) into which ail the tapping pipes (12) emerge, with an orifice (15) providing a connection between the common space (8) and a gas-detection device (16).

Abstract: A pneumatic tool includes an air chamber; and a pressure adjusting mechanism which adjusts a pressure of a compressed air in the air chamber. The pressure adjusting mechanism includes a valve body which opens and closes a flow path that communicates the air intake and the air chamber; an elastic body which exerts an urging force to the valve body; a support part which supports an end of the elastic body; a pressure receiving member which receives air pressure in the air chamber and presses the elastic body in a direction of closing the flow path; and a load reducing mechanism capable of switching the urging force of the elastic body acting on the valve body between a normal state and a load reduction state in which the urging force smaller than the normal state is exerted.

Abstract: A flow diversion valve, the flow diversion valve including: a valve housing having a first inlet, a second inlet, a first outlet, a second outlet, and an inner cavity; a float valve provided within the inner cavity of the valve housing; and a check valve provided on the float valve. The flow diversion valve having a first configuration in which the float valve is in a closed position to provide a first flow path from the first inlet to the first outlet. The flow diversion valve having a second configuration in which the float valve is in an open position to provide a second flow path from the first inlet through the second outlet and a third flow path from the second inlet to the first outlet.

Abstract: A pneumatic valve for attachment to a source of high pressure gas comprises a valve body which comprises a gas inlet and a gas outlet. A rupturable membrane extends across the gas inlet. A membrane support element is slidably supported in the valve body for movement between an extended position and a retracted position, the membrane support element having a lower end engageable, in the extended position, with the rupturable membrane to support the rupturable membrane against rupture. The valve body further comprises a bore through which the membrane support element extends and one or more gas supply passages bypassing the bore for providing a gas flow path from the gas inlet to the gas outlet. The membrane support element is configured to be movable from the extended position to the retracted position to permit the rupturable membrane to rupture under the pressure of the high pressure gas.

Abstract: A dual shut-off valve including a valve body defining an interior cavity and a flow tube passing therethrough, an outer cylinder including a body portion defining an interior cavity and a through hole passing therethrough, the outer cylinder being rotatably disposed within the interior cavity of the valve body, and an inner cylinder including a body portion defining a through hole passing therethrough, the inner cylinder being rotatably disposed within the interior cavity of the outer cylinder, wherein the inner cylinder and the outer cylinder are both rotatable between a first position in which the through holes of the outer cylinder and the inner cylinder are aligned with the flow tube and a second position in which the through holes of the outer cylinder and the inner cylinder are transverse to the flow tube.

Abstract: An apparatus to allow or stop an air flow into an enclosed environment or piping system comprises (a) a housing, (b) a first valve seat, (c) a first sealing member, (d) a second valve seat, (e) a second sealing member, (f) at least one locking mechanism configured to limit a movement of the first sealing member and/or the second sealing member; wherein the first sealing member moves away from the first valve seat when the second pressure is greater than the first pressure in a predetermined pressure difference; wherein the second sealing member moves away from the first valve seat when the third pressure is greater than the second pressure in a predetermined pressure difference; wherein the first pressure communicates with a system pressure in the piping system; and wherein the third pressure communicates with an ambient air pressure.

Abstract: [Object] It is an object of the present invention to provide a valve structure capable of fixing a first connecting port of a first valve box block and a second connecting port of a second valve box block to each other when the first valve box block, a first driving portion block, the second valve box block and a second driving portion block are fixed to each other by bolts. [Solving means] A first valve box bolt insertion hole 113 is formed in the first valve box block 110, a first driving portion bolt fixing hole 123 is formed in the first driving portion block 120, a second valve box bolt insertion hole 213 is formed in the second valve box block 210, and a second driving portion bolt fixing hole 223 is formed in the second driving portion block 220.

Abstract: The present invention provides a leak-proof fluid dispensing system with a pressure sensor and an adjustable dispensing regulator, comprising: a gas cylinder and a pressure dispensing control valve. The dispensing control valve is formed outside the bottle body opening and has an internal channel that communicates with an inlet port, an outlet port, a bottle port, and the joint portion. The internal of the dispensing body includes an inlet valve, an outlet valve, a pressure dispensing regulator, a filter, and a pressure sensor. The pressure at the outlet end of pressure dispensing regulator is lower than or equal to a preset opening pressure value, the fluid is allowed to flow out. With the implementation of the present invention, it may prevent accidental leakage of fluid in the gas cylinder and dynamically monitor the flow gas capacity in the gas cylinder.

Abstract: This disclosure relates to a sanitary fitting for dispensing prepared liquids, for example, for beverages. A disclosed system includes a first control element for setting a quantity of the prepared liquid to be dispensed and an actuating element for providing the quantity of prepared liquid set by means of the first control element, wherein at least one second control element is configured to select a type of preparation, for example, from at least two different types of preparation, of non-prepared liquid, wherein the first and the at least one second control element are actuatable independently of one another.

Abstract: A pot filler including a metered dispense input device for dispensing of predetermined volumes of water. The pot filler illustratively includes an electrically operable valve operably coupled to a metered dispense input unit, and a control module configured to control operation of the electrically operable valve.

Abstract: The present invention relates to a cartridge for an electronic tap having a handle or controller with an extended operative range of motion, which allows moving said handle or controller beyond its normal range of motion determined by a first stop, providing in said extended areas additional functionalities using a control system that determines the position of the handle in order to associate to said position a flow value, a fluid mixing ratio value, and/or an additional functionality. The invention also relates to the tap including said cartridge with a handle having an extended operative range of motion and to the operation method thereof.

Abstract: Control valve assembly for controlling a process fluid flow in a process engineering plant such as a power plant, a chemical plant, a food processing plant or the like, wherein at least one fine-adjustment poppet valve with a fine-adjustment drive for the fine adjustment of a fine-adjustment poppet valve flow area; and at least one open/close poppet valve having a discrete adjustment actuator for placing the open/close poppet valve either into an open position, in which a poppet valve flow area is completely open, or into a closed position, in which the poppet valve flow area is closed off, wherein a cumulative total flow area of the adjustment valve assembly is defined by the fine-adjustment poppet valve flow area of the at least one fine-adjustment poppet valve and by the poppet valve flow area of the at least one open/close poppet valve.

Abstract: This document describes devices and methods for reducing liquid spillage, such as fluid coupling devices that include one or more apertures that reduce spillage when the fluid coupling devices are disconnected. In some embodiments, the one or more apertures are designed with features to increase a level of acceleration that liquid within an internal volume of the fluid coupling devices would need to be exposed to in order to spill from the internal volume via the one or more apertures.

Abstract: An intermittent air blow gun (10a) has a switching valve (26) including a switching-valve case (27) and a valve assembly (31), and the valve assembly (31) includes: a valve body (53) configured to open and close a valve hole; a small-diameter piston (33) partitioning so as to form a small-diameter pilot chamber (34); and a large-diameter piston (37) partitioning so as to form a large-diameter pilot chamber (38). The valve body (53) is switched to a closed position when air discharged from an inside of the switching-valve case (27) to an air discharge section (24) is supplied to the large-diameter pilot chamber (38) through a bypass flow path (77), and the valve body (53) is switched to an open position when air is exhausted.

Abstract: An electro-hydrostatic actuating drive has a variable-volume and/or variable-speed hydraulic machine, which is driven by an electric motor, for the provision of a volumetric flow of a hydraulic fluid. Furthermore, the actuating drive comprises a cylinder with a piston, a piston rod and a first piston chamber, a valve with a first position and a second position, which valve can be moved by a first hydraulic actuator into the first position and by a second hydraulic actuator into the second position, wherein the second position controls a greater volumetric flow of the hydraulic fluid than the first position, a sink, a main line which connects a first piston chamber of the cylinder to the sink and in which the hydraulic machine is arranged, an auxiliary line which connects the first piston chamber to the sink and in which the valve is arranged, a first control line to the first hydraulic actuator, and a second control line to the second hydraulic actuator.

Abstract: A pipeline assembly includes a hollow body having a first opening and a second opening. A valve port fluidly coupled to the first opening is provided on the body and a valve port seat is disposed in the valve port. A shutter is urged against the valve port seat by a spring fluidly de-coupling the second opening from the first opening and the valve port. A valve plug includes a check valve. When the valve plug is disposed in the valve port, the valve plug decouples the shutter from the valve port seat to fluidly couple the first opening and the second opening with a fluid flow in only a first direction when the check valve is in an open condition.

Abstract: A mobile dispenser may be used to at least partially fill hydrogen tanks of fuel cell-powered vehicles. The dispenser uses a purely mechanical control of the fill using an orifice plate across which a pressure differential is maintained through use of a backpressure regulator whose reference pressure is controlled by a differential pressure regulator. Because it does need or use electrical power, it may be used in situations where no electrical power is available or convenient.

Abstract: A pressure-type flow rate control device 1, while maintaining an upstream pressure P1 of an orifice 5 at approximately at least twice a downstream pressure P2, calculates a flow factor FF of a mixed gas consisting of two types of gases mixed at a mixture ratio of X:(1?X) by FF=(k/?){2/(?+1)}1/(??1)[?/{(?+1)R}]1/2 using an average density ?, an average specific heat ratio ?, and an average gas constant R of the mixed gas that are calculated by weighting the densities, specific heat ratios, and gas constants of the two types of gases at the mixture ratio, and calculates a flow rate Q of the mixed gas passing through the orifice by Q=FF·S·P1(1/T1)1/2, where S is the orifice cross section, and P1 and T1 are respectively the pressure and temperature of the mixed gas on the upstream side of the orifice.

Abstract: A water purifier that includes: a filter unit that is configured to purify water; a cooling unit that is configured to cool water purified by the filter unit using cooling water; a water discharge unit that is configured to discharge water cooled by the cooling unit; a cold water flow path that couples the cooling unit to the water discharge unit and through which water cooled by the cooling unit passes; a cold water discharge valve that is coupled to a first side of the cooling unit and that is configured to control water flow inside the cold water flow path; and a check fitting unit that is coupled to a first side of the water discharge unit and that is configured to block pressure change inside the cold water flow path is disclosed.

Abstract: A steam valve includes a housing defining a steam inlet and steam outlet in fluid communication with a valve cavity, and an annular valve seat disposed within the valve cavity. A control valve is configured to selectively engage the valve seat. The steam valve further includes a stop valve configured to selectively engage the valve seat. The steam valve includes a pressure seal head configured to receive the stop valve. The pressure seal head includes an elongated body having a bore extending longitudinally through the body; and a nose piece extending from an end of the elongated body. The nose piece has at least a tapered end portion and a bore extending longitudinally therethrough. The bore of the nose piece is longitudinally with the bore of the elongated body. The nose piece is formed of a first material which has greater erosion properties than a second material forming the elongated body.

Abstract: An anesthesia delivery and ventilation system (ADVS) includes an expiratory section, a circulation flow system (CFS), an inspiratory section, a ventilation drive system (VDS), and an anesthesia delivery system (ADS). The expiratory section receives gases from a patient and the inspiratory section and fresh gases from a fresh gas supply system. An elastic mixing reservoir receives and mixes the gases circulated by the CFS with residual gases via a connector element. The inspiratory section connects to the expiratory section at one end and to a patient connector tube at the other end. The ADS infuses an anesthetic agent into the mixed gases in the inspiratory section. The VDS delivers the mixed gases with the anesthetic agent to the patient. The VDS and the CFS are controlled and operate independently of each other to provide positive end-expiratory pressure control and ventilation control to the patient without use of a proportional valve.

Abstract: A valve for controlling the flow of a solid material from an opening includes a gate having a first face adjacent the opening, a second face opposite the first, and an orifice. A support is disposed adjacent the second face of the gate and is configured so that the gate can move relative to the support from a first position permitting the material to flow from the opening through the orifice and a second position preventing the material from flowing through the opening. The support is movable in a direction substantially orthogonal to the first direction so that the distance from the first face to the opening can be varied.

Abstract: A premixing apparatus includes a mixing unit, an air supply adjusting unit, and a gas switching unit. The mixing unit draws a fuel gas in the mixing unit by supplied air to mix the fuel gas and the supplied air with each other. The air supply adjusting unit applies a load on the supplied air flowing toward the mixing unit and switches the load. The gas switching unit switches a gas amount of the fuel gas to be supplied to the mixing unit.

Abstract: A golf bag (100) comprises a rotatable roller (116) upon which the bag (100) can be supported while being moved. The roller (116) is axially elongate and has outer portions (120) whose axial section has a convex curvature to reduce damage to ground over which the bag (100) is moved. Also disclosed is a golf bag accessory (200) comprising mounting means (206) for receipt of a portion of a golf bag (202). The golf bag accessory (200) further comprises securing means (204) for securing the golf bag (202) in the mounting means (206) and a rotatable roller (116) which is axially elongate and comprises an outer surface whose axial section (120) has a convex curvature.

Abstract: A bypass valve assembly for use in turbine generators includes a valve body defining a central bore and a plurality of passageways. Each passageway has a smaller area at an inlet portion and a larger area at an outlet portion to define a flared passageway. A plurality of bypass valves is disposed within the plurality of passageways within the valve body. Each bypass valve includes a base portion and a nose portion, with each nose portion defining a predefined contoured surface area. At least a portion of the contoured surface area includes a wear coating disposed thereon. Optionally, the wear coating includes a plasma enhanced magnetron sputtering nanocoating.

Abstract: A hydraulic driving device for a steam valve includes a plurality of hydraulic actuators to generate driving force to be transmitted to the valve body through a valve shaft of the steam valve. The hydraulic actuators each include a cylinder, a piston that is capable of reciprocating in the cylinder, and a rod having respective ends connected to the piston and valve shaft. The hydraulic actuators include a main actuator including a throttle portion for regulating a flow of pressure oil in a hydraulic chamber defined by the cylinder and piston so that a damping force is applied to the valve body during its closing operation. The one or more hydraulic actuators other than the main actuator include at least one sub actuator not having the throttle portion. The hydraulic chamber of the sub actuator communicates with the hydraulic chamber of the main actuator.

Abstract: Embodiments of the present disclosure provide a smart water dispenser and a control method thereof. The smart water dispenser includes: a mechanical switch, an electronic switch and a controller. The controller is configured to determine whether water usage is normal according to ON/OFF states of the mechanical and the electronic switches; if so, to indicate a water discharged volume detection unit to collect a water discharged volume; and otherwise, to turn off the electronic switch and transmit a play instruction to a voice playback unit. The control method includes: detecting states of the mechanical switch and the electronic switch in real time; determining whether the mechanical switch is in the ON state when the electronic switch is switched from the OFF state to the ON state; if so, turning off the electronic switch and outputting a prompt voice; and otherwise, collecting the water discharged volume when the mechanical switch is switched from the OFF state to the ON state.

Abstract: An integrated tire inflation valve comprises an inlet configured to receive air from an air tank, a pressure protection assembly configured to control air flow into the tire inflation system when an air pressure reaches a pre-set pressure level, a valve assembly in fluid communication with the pressure protection assembly, a pressure regulator configured to be adjusted to a desired pressure to thereby allow air through the pressure regulator at a desired level, a flow switch configured to selectively allow air therethrough, and an outlet configured to provide air from the flow switch to one or more tires of a vehicle. The inlet, pressure protection assembly, valve assembly, pressure regulator, flow switch, and outlet are all positioned within a single housing.

Abstract: A control valve (1) comprising a valve body (2) having an inlet opening (3) and an outlet opening (4) for a fluid; a obturator (6) placed within the valve body (2) between the inlet and outlet openings (3, 4); recovery means (5) configured to transfer kinetic energy and/or potential energy extracted from the fluid out of the valve body (2), the recovery means (5) comprising a rotating element (7) placed within the valve body (2) downstream of the obturator (6) and configured to be put in rotation by the fluid.

Abstract: The present invention relates to a downhole flow device for controlling a flow of fluid between an annulus and an inner bore of a well tubular metal structure arranged in a borehole. The downhole flow device comprises a tubular part comprising a first opening and an axial extension, and a sliding sleeve configured to slide within the tubular part between a first position covering the opening and a second position fully uncovering the opening, the tubular part comprising a first groove and a second groove, the first groove being arranged at a first distance from the second groove along the axial extension, and the sliding sleeve comprising a projecting part configured to engage the first groove in the first position and the second groove in the second position, wherein the tubular part comprises a third groove configured to be engaged by the projecting part and having a second distance to the second groove which is smaller than the first distance.

Abstract: An isolation valve assembly having a valve body (22) provided with an inlet (23) and an outlet (24), fluidly connected by a fluid passageway (25), and an isolation valve (26, 27) that is operable to selectively open or close the fluid passageway. A vent is fluidly connected to the fluid passageway and a vent valve (34) is operable to open and close fluid communication between the fluid passageway and the vent. The vent valve comprises a stem (36) with a sealing member (37) and is operable between an open position, in which the sealing member is disposed such that the fluid passageway and the vent are fluidly connected and a closed position in which the valve stem extends across the fluid passageway and the sealing member seals the vent from the flow passageway.

Abstract: In accordance with the present disclosure, a full top-to-bottom subsea system and method used to drill, complete, produce, and perform interventions on HPHT subsea wells is provided. The disclosed systems and methods involve the use of a controlled multiple barrier system, such as a high integrity pipeline protection system (HIPPS), incorporated into the subsea system to divide the system into two sections. The sections on either side of the barrier may be rated for different pressures, temperatures, and/or flow rates. For example, the first section (upstream of the barrier) is rated for operating at pressures/temperatures/flow rates up to a first (higher) threshold. The second section (downstream of the barrier) is rated for operating at pressures/temperatures/flow rates up to a second (lower) threshold. The disclosed subsea production system methodology, which uses barriers to divide the system components between two pressure ratings, may allow for enhanced development of HPHT reservoirs.

Abstract: A process control valve comprises a valve body having an inlet and an outlet and a plug. The plug selectively restricts fluid communication between the inlet and the outlet. The plug can have a plug body and a plurality of fins extending radially outward from the plug body between a first end of the plug and a second end of the plug. Each one of the plurality of fins can have a tapered section proximate the second end of the plug. The tapered section can taper radially inward toward the second end of the plug.

Abstract: The invention concerns a method for flushing of debris from a valve assembly arranged in a fluid line. The valve assembly comprises at least two flow regulating units arranged in series between an inlet and an outlet of the valve assembly. The inlet pressure is larger than the outlet pressure, and each flow regulating unit has a spring element and an opening is provided for each flow regulating unit which initially is set as a minimum opening allowing fluid to pass from one side of the each of the flow regulation unit to the other side of the flow regulation unit. The spring element regulates the opening in response to the pressure difference over the flow regulating unit.

Abstract: A tubular guide assembly provides lateral support to a tubular extending through a BOP. The inner diameter of the BOP encasement is larger than the joint diameter. The assembly has a guide spool with a central bore extending therethrough along a longitudinal axis, wherein the diameter of the guide spool central bore is greater than the joint diameter of the tubular. At least two guide spool apertures extend radially inwardly through a wall of the guide spool to the central bore. A guide post for each guide spool aperture is movable through the respective guide spool aperture into the guide spool central bore to limit lateral displacement of a tubular extending therethrough. A method for providing lateral support to a tubular extending through a BOP during a snubbing operation uses their guide assembly.

Abstract: An adapter includes a housing having an inlet port defining a flow path and an outlet port. An interior wall has an inner surface defining an interior passageway communicating with the outlet port and an exterior surface defining an exterior passageway communicating with the inlet port. The interior wall defines a mouth communicating between the interior and the exterior passageways. The interior wall is positioned transverse to the flow path of the inlet port. A medicament delivery port opens into the mouth. A valve is moveable between a closed position, wherein the valve closes the medicament delivery port, and an open position, wherein the medicament delivery port is open. A ventilator circuit and method of delivering a medicament are also provided.

Abstract: The present disclosure generally relates to an annular blowout preventer (“BOP”) apparatus for sealing a wellbore. In particular, the annular BOP includes a body comprising a vertical bore extending therethrough, an upper packing element located in the body, a lower packing element located in the body and spaced axially from the upper packing element, and a piston configured to move the upper and lower packing elements radially with respect to the vertical bore. The annular BOP provides for bi-directional sealing across the annular BOP. In other embodiments, the annular BOP may include only a single packing element configured to provide for bi-directional sealing across the annular BOP.

Abstract: Valve assemblies with butterfly valves for use as a double isolation & bleed (DIB) valve and a double block & bleed (DBB) valve. The embodiments may have a twin-disc design with a non-separable, valve body having a central bore. A pair of butterfly valves may reside in the central bore, each having an annular seal and a rotatable disc that contacts the annular seal to prevent flow of fluid into space between the butterfly valves. Implementations of the embodiments configure the annular seal with a sloped contact surface at an angle to positively seal the rotatable discs in the preferred direction of incoming flow. In this way, the valves can always close in response to either uni-directional flow into one end of the central bore or bi-directional flow into both ends of the central bore, respectively or simultaneously.

Abstract: A microfluidic valve includes: a first structural layer and a second structural layer; a microfluidic circuit having a first microfluidic conduit and a second microfluidic conduit, which are defined in a superficial portion of the first structural layer, are adjacent, and are separated by a wall; a membrane set between the first structural layer and the second structural layer and delimiting the microfluidic circuit on one side; and a recess containing a gaseous fluid in the second structural layer. The membrane is movable in response to an actuation stimulus between a closed position, in which the first and second microfluidic conduits are fluidly decoupled, and an open position, in which the membrane is at least in part retracted into the recess and the first and second microfluidic conduits are fluidly coupled by means of a fluidic passage defined between the wall and the membrane.

Abstract: A method of controlling a dispensing unit is used to dispense material on a substrate. The method includes connecting a solenoid coil of a pneumatically-driven pump to an amplifier output of a dispensing system, and driving the solenoid coil with the amplifier to a cause the pneumatically-driven pump to dispense material on a substrate. The method further may include commanding an idle current to flow in the solenoid coil during periods of inactivity. The idle current may be sufficient to cause warming of the solenoid coil, yet not sufficient to activate the solenoid to an engaged position. The method further may include commanding a first current level to flow in the solenoid coil to rapidly activate the solenoid, and commanding a second current level to flow in the solenoid coil after the solenoid is activated.

Abstract: An electropneumatic proportional flow valve improves flow control because it incorporates a plurality of internal valves in parallel with each electronically controlled, miniature proportional valve manipulated sequentially to each other. Such parallel arranged valves operated sequentially allows for precision control of the low-end of the full scale output; the larger mechanical valve allows for the high-end of the full scale output.

Abstract: A device, method and system is provided for regulating an ambient condition of a space via a heat exchanger that transfers heat energy from a secondary fluid to a primary fluid, and a flow control valve in fluid communication with the heat exchanger to vary a flow of the secondary fluid through the heat exchanger to provide a continuous flow of the secondary fluid between a minimum flow rate and a maximum flow rate. While in a first mode for regulating the ambient condition of the space, the flow control valve is modulated so as to provide variable and continuous flow of the secondary fluid through the heat exchanger to regulate the ambient condition to a desired target ambient condition. While in a pull-down mode for recovering after a defrost cycle of the heat exchanger, the flow control valve is modulated so as to provide variable and continuous flow of the secondary fluid through the heat exchanger to regulate a temperature drop of the secondary fluid across the heat exchanger.

Abstract: A system for dispensing material on a substrate includes a dispensing unit having a dispensing piston. The dispensing piston is pneumatically driven from a first lower position to a second upper position. The system further includes a solenoid valve coupled to the dispensing unit, with the solenoid valve being configured to control air flow to and from the dispensing piston. The solenoid valve includes a solenoid coil and an amplifier connected to the solenoid coil. The system further includes a controller coupled to the amplifier, with the controller being configured to generate a command signal to the amplifier to control current in the solenoid coil.

Abstract: A valve body for an irrigation system is disclosed. The valve body is formed as a unitary molding and comprises a manifold arrangement integrally formed in the valve body and includes an inlet and at least one outlet. The manifold arrangement includes a valve receiving region located between the inlet and each outlet where each valve receiving region is operable to receive a valve to selectively control the flow of liquid between the inlet and each respective outlet of the manifold arrangement.

Abstract: A redundant valve system to provide a regulated fluid flow includes a housing having an inlet at an inlet end which receives a pressurized fluid, and an outlet at an outlet end which provides the regulated fluid flow, a first piston assembly arranged in the housing having a first cavity, the first piston assembly configured to regulate the fluid flow, and a first fluid connection connected to the first cavity and to a point along the housing at the outlet end. The redundant valve system may further include a second piston assembly arranged in the housing downstream of the first piston assembly having a second cavity, the second cavity having a second fluid connection to a vent, an upstream valve to control the first fluid connection and control a position of the first piston assembly, and a downstream valve to control the second fluid connection and control a position of the second piston assembly.

Abstract: A part (P) includes a first (FP), and a second portion (SP), which meet at an interface (IF). A channel (CH) extends from the first portion (FP) through the interface (IF) into the second portion (SP). Further there is a method to generate the part (P). To refurbish a part with tiny geometry channels, the second portion (SP) is produced by additive manufacturing technology on the interface (IF) with the first portion (FP), the channel (CH) has a first average diameter (DI) in the first portion (FP) and the interface (IF), and the channel (CH) has a second average diameter (D2) in the second portion (SP) at said interface (IF). The second diameter (D2) is larger than the first diameter (DI). The channel (CH) has a first tapered portion (TP) which narrows in the second portion (SP) at increasing distance from the interface (IF).