Abstract: A valve device includes: a valve body defining a flow path; a diaphragm as a valve element for opening and closing the flow path; a stem for making the diaphragm separate and seat on a valve seat; a coil spring as a spring member for constantly biasing the stem in a valve-closing direction; a piston connected to the stem; and an actuator body for slidably accommodating the piston, wherein the inside of the actuator body is partitioned by the piston into a pressure chamber to which a driving gas is supplied and an atmospheric chamber communicating with the atmosphere via vent holes formed in the actuator body, and the actuator body includes an adjustment mechanism capable of restricting the ventilation amounts of the vent holes so as to adjust a valve closing time required for valve closing and a valve opening time required for valve opening to be equal.

Abstract: The present invention relates to a water line connection system with a hose attachment and method of installation comprising a tee joint inserted into an incoming cold-water pipe, a section of pipe connected to the tee joint, a shut-off valve attached to the pipe, a flexible branch line attached between the shut-off valve and a quick-connect coupling affixed to a coupling housing. An adaptor fitting is inserted into a hole in a countertop and the coupling housing is secured to the adaptor fitting such that the quick-connect coupling is accessible through the adaptor fitting. A hose may be attached to the quick-connect coupling and a nozzle may be attached at the end of the hose. A washer and nut may be used to secure the adaptor fitting to the countertop, and one or more pairs of goggles, and one or more safety face masks may be provided.

Abstract: A rotor tube assembly for a fluid valve actuator including a bearing housing assembly, a lead screw with a bottom shoulder, a rotor sleeve assembly with a non-block assembly, a bushing and a rotor tube. The lead screw is provided at least partially inside the bearing housing assembly, the rotor sleeve assembly, the bushing and the rotor tube. The bottom shoulder abuts the bearing housing assembly and the lead screw includes a bottom threaded portion on one side of the bottom shoulder and on the other side of the bottom shoulder and in this given order a bottom coupling portion for coupling the bearing housing assembly to the lead screw, a central coupling portion for coupling the rotor sleeve assembly to the lead screw, and an upper coupling portion for coupling the bushing to the lead screw.

Abstract: An appliance coupler water pumping apparatus, used in a liquid heater having a detachable inner container from a base body, is provided. The appliance coupler water pumping apparatus contains a water inlet pipe assembly communicating with an inner portion of the inner container by means of a first through hole and a water pumping pipe assembly being used for matching with the water inlet pipe assembly and extracting liquid in the inner container when communicating with the water inlet pipe assembly. According to the technical solution provided in the present disclosure, a user is able to enable the water inside the inner container of the kettle to flow out by means of the water inlet pipe assembly and the water pumping pipe assembly without lifting the kettle, thereby reducing cases of water spillage, avoiding the scalding for the children, elderly people and users with physical disabilities, and achieving high safety.

Abstract: A valve assembly includes a housing having an interior wall defining a chamber having a longitudinal axis. A piston is disposed in the chamber and is movable between first and second positions along the longitudinal axis, wherein the piston includes a piston head. The piston head has opposite first and second sides, longitudinally spaced first and second peripheral grooves disposed between the first and second sides, wherein the first and second grooves define a space therebetween, and a relief passage extending radially inwardly from the first groove and communicating between the space and the first side of the piston. Longitudinally spaced first and second O-rings are disposed in the first and second grooves and engage the interior wall.

Abstract: Disclosed are a method and a system for safety monitoring of a gas pipe well based on a smart gas IoT. The method may include: obtaining an environmental information sequence of the gas pipe well and an in-well monitoring data sequence by controlling a monitoring component according to a monitoring parameter based on the smart gas IoT, and storing the environmental information sequence and the in-well monitoring data sequence in a storage unit; determining an in-well risk value; adjusting the monitoring parameter in response to determining that the in-well risk value exceeds a risk threshold and updating the in-well risk value; determining weatherability of a gas component; determining an impact degree of the gas component; determining a pipe well inspection program and generating a corresponding pipe well inspection instruction to be sent to an inspection terminal; and adjusting the monitoring parameter and clearing expired data in the storage unit.

Abstract: A valve assembly of a fluid end of a pump may include a valve seat having a bore defining an inner surface and an outer surface of the valve seat, a first end configured to engage with a valve in a closed position of the valve, and a second end, opposite the first end, defining a groove surrounding the bore. The valve assembly may include a sacrificial ring, positioned in the groove, configured to control corrosion of a fluid end block of the fluid end.

Abstract: A valve assembly having a handle and a valve body. The valve assembly includes an indicator and a marker that denote the rotational range and position of the handle relative to the valve body. The indicator generally has a contrasting color compared to the handle to ensure visibility. The indicator can be an inlay embedded on the top side of the handle. The indicator is generally arc-shaped. The alignment of the marker and the indicator can allow users to determine an appropriate direction to rotate the handle that is within the rotational range of the handle.

Abstract: A pressure reducing valve includes a valve housing, plunger, pressure sensing cavity, and biasing member. The valve housing includes a valve inlet and valve outlet in selective fluid communication with each other. The plunger is in the valve housing and movable between a closed position and open position. The plunger is positioned downstream from the valve inlet and upstream from the valve outlet. The plunger includes a venturi and a channel. The venturi is within the plunger and has a venturi inlet and venturi outlet. The channel is within the plunger and is in fluid communication with the venturi. The pressure sensing cavity is in fluid communication with the channel. The biasing member exerts a biasing force on the plunger toward the open position. The channel is in fluid communication with the pressure sensing cavity to provide a fluid pressure that is lower than the outlet pressure during flow.

Abstract: A valve arrangement for a fluid control system has a housing, comprising a fluid inlet, a fluid outlet, and extending along a central axis. The valve arrangement has a valve component, movable along the central axis between a first position, closing the fluid inlet, and a second position, a maximum valve lift defined therebetween. The valve arrangement has a biasing member, biasing the valve component towards the first position, and an intermediate component movable along the central axis, and relative to the valve component. The valve arrangement has a first stop and a second stop, the intermediate component axially movable therebetween, a range of the relative axial movement being less than the maximum valve lift.

Abstract: A vacuum valve for high/ultra-high vacuum systems includes a valve housing defining a passage connecting a first and a second opening of the housing. A valve body and a complementary seat is disposed in the passage, the valve body and/or the seat including a seal and the valve body being movable in a linear axial direction along between an open position and a closed position. The valve body cooperates with the seat in the closed position so as to close the first opening gas-tightly. An electromechanical actuation unit for actuating the valve body includes an electric motor and a mechanical conversion unit with an input portion drivingly connected to the motor and an output portion drivingly connected to the valve body. The conversion unit converts a rotational output of the electrical motor into a linear movement of an output portion to move the valve body in the axial direction.

Abstract: A mechanical power transmission module (10) comprising a housing (100) and a plurality of parts forming an epicyclic gear train, one of the inputs/outputs (101) of which is immobilized in relation to the housing, the other two inputs/outputs comprising an input (120) and an output (130, 140), power being supplied by an input shaft (110) of the module, the input shaft (110) being coupled to the output assembly (130, 140) by means of the input assembly (120) in a first axial position of the shaft. The input assembly (120) comprises a through-bore (123) and the output assembly (130, 140) comprises direct coupling means (142), toward the through-bore (123), accessible in a second position obtained by axial translation.

Abstract: Techniques involve detecting a mechanical play (Ws) in a system having a hydraulic valve and a valve drive for driving the hydraulic valve. A valve slide, which is driven by the valve drive of the hydraulic valve, is clamped with at least one return spring which is designed, in the case of a de-energized valve drive, to push the valve slide from any arbitrary valve slide position back into a neutral position of the valve slide.

Abstract: A fluid control device includes a housing portion including an inlet port and an outlet port, and a valve portion fixedly coupled to an internal surface of the housing portion, in which the valve portion includes a lower plunger module, an upper plunger module, an elastic member including one side configured to press the lower plunger module downward and the other side configured to press the upper plunger module upward, and a solenoid, in which the lower plunger module includes a lower plunger member movable in an upward/downward direction H, and in which the upper plunger module includes an upper plunger member provided to be movable in the upward/downward direction H relative to the housing portion, and a core provided to be penetrated by a partial region of the upper plunger member and including at least a partial region surrounded by the solenoid.

Abstract: A tandem gas valve includes a valve body, a first solenoid valve and a second solenoid valve. An inlet passage, a first chamber, a second chamber, a third chamber and an outlet passage are successively provided on the valve body along a gas flow path, a first valve seat is provided between the first chamber and the second chamber, and a second valve seat is provided between the third chamber and the outlet passage. Upper ends of the first valve seat and the second valve seat are respectively provided with a sealing rib and inclined surfaces located at both sides of the sealing rib, an upper end face of the valve body is provided with first openings at positions corresponding to the first valve seat and the second valve seat, and the two solenoid valves are arranged corresponding to the first openings.

Abstract: A fluid ejection system includes an electromagnetically operated valve for regulating the flow of a fluid. The electromagnetically operated valve includes a valve body defining a fluid inlet and a fluid outlet, a plunger member, an electromagnetic driving means, and a spring adapted to bias the plunger member toward a closed position. The electromagnetic driving means is adapted to drive the plunger member along an open direction inside the valve body and into an open position facilitating the flow of the fluid through the valve body. The electromagnetic driving means includes a coil and a coil reel. The coil is arranged to surround the coil reel, and the coil reel is arranged to surround the plunger member for generating an electromagnetic field suitable for driving the plunger member into the open position. A nozzle is arranged at the fluid outlet for ejecting the cleaning fluid.

Abstract: A pressure-balanced valve is disclosed, which can be used both as a control valve and as an ON-OFF valve, whose sealing system is marked by a longer service life as compared to that of prior art solutions. The longer service life derives from the fact that the sealing elements are energized when the valve is closed, whereas they maintain a non-energized condition during valve regulation (when the closure member is subject to oscillations relative to the cage body). Advantageously, the sealing assembly as disclosed herein is easy to produce and assemble, as it can be inserted (and subsequently removed) together with the closure member, via a stem to which the closure member is connected.

Abstract: Systems, methods, and devices for magnetically actuating a gate valve of a subsea system via external magnetic actuation from a magnetic actuator. The magnetic actuator is disposed externally around a valve cavity such that motion of a valve stem disposed within the valve cavity can be controlled externally through magnetic coupling with the magnetic actuator such that a physical link (and the dynamic pressure seals associated therewith) is not needed to actuate the valve stem.

Abstract: An electromagnetic valve and an electromagnetic valve assembly are provided. The electromagnetic valve includes a first elastic member. An end of the first mounting cavity proximal to the valve port is provided with a limiting portion integrated with the valve body, the first elastic member is sleeved on the plugging assembly. One end of the first elastic member abuts against the plugging assembly, the other end of the first elastic member abuts against the valve body, and an outer surface of the other end of the first elastic member abuts against the limiting portion.

Abstract: A flow rate adjustment device includes: an adjustment unit including a pipe and a sealing plate provided below an outlet of the pipe, the sealing plate having a sealing surface; and a moving unit that moves the sealing plate to a sealing position where the sealing surface of the sealing plate is positioned vertically below the outlet of the pipe and a retraction position where the sealing surface of the sealing plate is retracted from a point vertically below the outlet of the pipe.