Abstract: A high-pressure fluid discharge device that can adapt to large flow rates while being small in size has a diaphragm valve body that cooperates with a valve seat provided to a body to switch between communication and blocking between a first flow path and a second flow path. A pilot chamber and a valve chamber joined to the first flow path are sectioned by the diaphragm valve body, and the diaphragm valve body is provided with a pilot passage allowing communication between the valve chamber and the pilot chamber. The diaphragm valve body is also provided with a pilot-type spool valve that switches between communication and blocking between the pilot chamber and an excretion port.

Abstract: An actuator for a pilot valve, including a housing, a piston movably mounted in the housing and an actuator chamber defined between the piston and the housing. The actuator includes a control fluid feed for introducing a fluid into the actuator chamber to control fluid pressure, with the fluid pressure acting on the piston. The actuator also includes an actuation member for acting on the pilot valve and a loading spring between the piston and the actuation member. The loading spring is arranged to bias the piston against the fluid pressure in the actuator chamber. The control fluid feed controls the fluid pressure so the fluid pressure acts on the piston against the bias of the loading spring to control the biasing force.

Abstract: A proportional solenoid, capable of linear motion, includes an electromagnetic valve device including a solenoid assembly having a mobile core, a push rod connecting the solenoid mobile core to a valve plunger, and a device operable to apply a controlled friction force to hold the mobile core in an intermediate position. The friction force applied by the friction device is greater than the motive forces generated by the solenoid.

Abstract: A valve device includes an operating portion including an operating rod switchable between a first state where the operating rod is at a first position, a second state where the operating rod is displaced from the first position, and a third state where the operating rod is displaced from the first position, a push member that can advance by being pushed by the operating rod, a first valve that can be opened and closed in accordance with the amount of displacement of the operating rod and the push member from the first position, a housing storing the first valve, and a second valve that can open and close a communication passage allowing communication inside and outside the housing by switching operation of the operating rod so as to switch from the first state to the second state.

Abstract: Funnels are disclosed for use with filling packages with bulk product.

Abstract: Funnels are disclosed for use with filling packages with bulk product.

Abstract: Funnels are disclosed for use with filling packages with bulk product.

Abstract: A manually operable valve for restricting airflow to and/or from a patient. The valve includes a body having one or more walls that extend between a first end and a second end. The one or more walls form a passage between the first end and the second end of the body. Two moveable members are positioned on opposing sides of the passage and axially fixed between the first end and the second end of the body. The two moveable members are configured such that depressing the two moveable members inwardly deforms the one or more walls to thereby restrict the passage. When the two moveable members are subsequently released, the one or more walls return to unrestrict the passage.

Abstract: A shaft end section of a shaft is inserted into a receiving hole of a shaft receiver of a gear arrangement. An outer periphery, which forms an outer periphery of the shaft end section, has an end section flat surface portion and an end section curved surface portion. A receiving hole inner periphery, which forms an inner periphery of the receiving hole, has a receiving hole flat surface portion and a receiving hole curved surface portion. The shaft end section is press-fitted such that the receiving hole flat surface portion contacts at least a part of the end section flat surface portion, and the receiving hole curved surface portion contacts at least a part of the end section curved surface portion, while a central axis of the shaft end section overlaps with a central axis of the receiving hole.

Abstract: Described is an active check valve that uses electro-magnetic actuation for operation. The valve includes a plunger assembly having a magnet in a sealed internal volume. The plunger assembly further includes a plunger tip that extends from either a plunger assembly housing or a sealing member. Although the plunger assembly is disposed in the solvent flow, the magnet is not exposed to the solvent. When the valve is actuated, the plunger tip moves the sealing member to open or close the valve. Optionally, an arming force may be applied to the sealing member in advance of opening or closing to reduce the subsequent additional force necessary to move the sealing member during opening or closing, thereby improving the accuracy of the solvent composition in liquid chromatography system applications.

Abstract: Systems and methods are provided for controlling hydraulic valves. One embodiment is a method that includes blocking an orifice for a return line of a hydraulic valve via a flapper assembly, initiating a phase change in a Shape Memory Alloy (SMA) at the flapper assembly, and opening the orifice for the return line via the flapper assembly in response to the phase change.

Abstract: The present disclosure relates to a water supply device for sanitary ceramics, including a housing including a water supply hole, a water discharge hole, and an opening/closing device including a diaphragm formed above the water discharge hole, a partition cap having a support protrusion and a through-hole through which an upper space communicates with a lower space of the housing, a cam plate configured to gradually open or close the through-hole, a shaft part formed above the cam plate, and a motor formed on the upper surface of the housing to rotate the shaft part, wherein the cam plate, rotating and elevating along the upper surface of the support protrusion of the partition cap, gradually opens or closes the through-hole and gradually opens or closes the water discharge hole by the diaphragm, and thus the flow of water discharged through the water discharge hole is prevented from being suddenly blocked.

Abstract: An electrically-operated ON/OFF valve for a high pressure hydrogen tank for an automotive fuel cell system has a valve body, a solenoid group, a first gate that achieves a first-stage seal, and a sealing element provided with a main sealing surface to achieve a second-stage seal. The first-stage seal and the second-stage seal are both achieved by the sealing element.

Abstract: A PRV is provided, comprising an inlet, an outlet, and a pressure regulating system therebetween to maintain a set pressure at the outlet. The PRV further comprises a selection system configured to select between the two working pressures based on the pressure of the fluid at the inlet of the PRV, and to direct the pressure regulating system to maintain the set pressure at the outlet at the selected working pressure. The selection system comprises a pressure-motion transducer for directing the set pressure when in pressure communication with the inlet, and an auxiliary valve having an auxiliary inlet in pressure communication with the inlet and an auxiliary outlet in pressure communication with the pressure-motion transducer. The auxiliary valve is configured to establish pressure communication between its inlet and outlet when pressure in the inlet traverses a predetermined threshold.

Abstract: Aspects of the present disclosure relate to actuator assemblies and related methods for valve systems. In one implementation, an actuator assembly for valves includes an outer housing. The outer housing includes a first internal volume and an inner shoulder portion. The actuator assembly includes an inner housing disposed at least partially in the outer housing. The inner housing includes a second internal volume. The actuator assembly includes one or more first pistons disposed in the first internal volume of the outer housing, and one or more second pistons disposed in the second internal volume of the inner housing. The one or more first pistons are disposed between the one or more second pistons and the inner shoulder portion of the outer housing. The actuator assembly includes an actuator stem disposed through at least a portion of the outer housing and coupled to the one or more second pistons.

Abstract: It is a pig launcher (1) comprising a pig magazine (2), launcher mechanism (3) and a connector (7) being connectable to a fluid flow line. The pig magazine (2) is able to hold a number of pigs arranged side by side, control lines (4) being connected to the pig magazine in such a way that each control line (4) is able to provide control fluid to manipulate a pig. The pig launcher further comprises a pig selector (5) being able to receive source control fluid from one control fluid source line (9) and to channel the control fluid to one of a number of control lines (4) being connected to the pig selector, thereby being able to launch one of the number of pigs by means of the control fluid.

Abstract: A method for controlling at least one valve provided to a tube in a bioprocess flow system, said method comprising the steps of: —controlling the at least one valve to be in a first state, which is an open state when a flow through the tube should be allowed; —controlling the at least one valve to be in a second state during some parts of a process run in the system, said second state is a closed state were a first closing force is provided; and—controlling the at least one valve to be in a third state during some parts of a process run in the system, said third state is a closed state were a second closing force is provided which is a higher force than the first closing force.

Abstract: A valve assembly includes a fluid flow passage, a valve seat, and an actuator assembly. The actuator assembly includes an actuator body stationary relative to the valve seat and a valve member moveable relative to the valve seat between a first position in which the valve member engages the valve seat, and a second position in which the valve member is remote from the valve seat. The valve member includes at least one orifice extending therethrough. The actuator assembly further includes a bellows attached to the valve member and to the actuator body. An interior surface of the bellows, the actuator body, and the valve member define a control chamber therebetween. An exterior surface of the bellows and the valve member define an outer volume therebetween such that the outer volume is around the control chamber. The at least one orifice fluidly communicates the control chamber with the outer volume.

Abstract: An air valve comprises a casing, a valve body driving assembly and a valve body. The casing comprises a chamber, a vent hole, and at least one switching hole communicating with the chamber. The valve body driving assembly is disposed in the chamber, and comprises a pusher, a shape memory metal wire in a linkage relationship with the pusher, and two conductive members disposed in the casing and located at two ends of the shape memory metal wire respectively, the pusher travels a uniaxial displacement stroke due to a temporary change of the shape memory metal wire. The valve body is disposed in the chamber and faces the switching hole, when the pusher travels the uniaxial displacement stroke, the valve body is driven to rotate a central angle relative to the switching hole to change a ventilation state between the switching hole and the chamber.

Abstract: A manifold body includes a body block, with one or more end connections each extending laterally outward from a first surface of the body block, one or more lower valve cavities each recessed laterally inward from the first surface, one or more upper valve cavities each recessed laterally inward from the first surface and connected with a corresponding one of the one or more lower valve cavities by a vertically extending second passage, one or more lower end ports each extending laterally outward from a second surface of the body block and connected with a corresponding one of the one or more lower valve cavities by a laterally extending third passage, and one or more upper end ports each extending laterally outward from the second surface and connected with a corresponding one of the one or more upper valve cavities by a laterally extending fourth passage.