Abstract: A floating ball valve comprising: a housing having an internal cavity and first and second fluid flow ports through which fluid flows selectively in either direction from the first to the second or the second to the first fluid flow ports when the valve is open; a floating ball housed in the cavity and formed having a through hole for passage of fluid the ball being rotatable to open the valve and allow fluid flow through the fluid flow ports and internal cavity and to close the valve and block fluid flow through the fluid flow ports and cavity; and a pressure relief valve (PRV) having a cracking pressure mounted to the floating ball so that the PRV communicates with the through hole, and when the floating ball valve is closed the PRV faces and communicates with the first fluid flow port; wherein the PRV is normally closed whether the floating ball valve is open or closed, and when the floating ball valve is closed, if pressure in the internal cavity exceeds the cracking pressure of the PRV, the PRV opens to

Abstract: A vacuum valve or door having a closure plate for closing an opening in a wall. The opening has opposing first and second longitudinal edges and shorter opposing first and second transverse edges. A sealing unit seals the closure plate against the wall in the closed position. The sealing unit includes a supporting frame having opposing first and second longitudinal legs and shorter opposing first and second transverse legs, on which supporting frame there is mounted on one side a circumferential closure plate seal and on the other side a circumferential wall seal. The supporting frame is secured to fastening points on the wall, with central portions of the first and second longitudinal legs being free with respect to the wall, or the supporting frame is secured to fastening points on the closure plate, with the central being free with respect to the closure plate.

Abstract: A gate valve includes a valve plate that opens and closes a gate opening, a valve shaft that is fixed to the valve plate, an air cylinder that includes a drive rod, and a valve moving mechanism that causes, by expanding and contracting movements of the drive rod, the valve plate to move between a hermetically closed position at which the gate opening is hermetically closed by the valve plate and a full open position at which the gate opening is fully opened. A cylinder housing of the air cylinder is provided with a locking mechanism that locks the valve plate that has moved to the hermetically closed position and a lock detection unit that detects a locked state of the valve plate. The locking mechanism includes a lock piston that is capable of advancing and retreating with respect to the cylinder housing. A cam frame that is fixed to the drive rod has an engagement hole. The lock detection unit detects whether the lock piston is in a state of being engaged in the engagement hole.

Abstract: The vacuum valve includes a closure member that can be moved, parallel to a longitudinal movement direction, between an open position in which it unblocks the valve opening and an intermediate position in which it covers the valve opening but is raised off the valve seat, and that can be moved, parallel to a transverse movement direction, between the intermediate position and a closed position in which it bears against the valve seat; a valve rod that bears the closure member is mounted for displacement parallel to the longitudinal and transverse movement directions; a displacement part rigidly connected to the valve rod; and a drive motor which rotates a driveshaft about an axis parallel to the longitudinal movement direction in order to move the closure member between the open position, the intermediate position and the closed position.

Abstract: The present invention describes a device consisting of a rotor, a holding-down device, and a base plate. The base plate is normally a fluidic system, a planar fluidic system for example or a fluidic system with several fluidic ports for a directed guidance of liquids or gases through different channels, channel systems, cavities or tubing, for the combination liquid and gas streams, or for prevention of liquid flows.

Abstract: A cam control valve includes a valve casing having a fluid passage and valve seat, a valve disc seated on the valve seat to open and close the fluid passage, a valve stem holding down the valve disc so it contacts the valve seat, a cam acting on the valve stem to hold it down, a motor rotating the cam, a motor holder holding the motor, a supporting frame fixed to the valve casing and supporting the motor holder so it moves vertically, an elastic member biasing the motor holder towards spacing from an upper side portion of the supporting frame, and height adjustable screws suspending the motor holder from the supporting frame, and adjusting a height of the motor holder with respect to the supporting frame, wherein the height adjustable screws are slidably inserted into the upper side portion of the supporting frame and screwed into the motor holder.

Abstract: A valve for a vacuum drainage system includes a valve body having an interior chamber operatively connectable to a suction device and through an outlet to a vacuum source. A movable member having an aperture is secured within the chamber and movable through points between closed and open positions to adjust the open area of the aperture and the fluid flow through the outlet. The aperture is configured such that during adjustment to increase the effective operational area of the aperture, a rate of change of the effective operational area increases non-linearly in relation to a linear increase in the distance of travel, while providing advantageous and more controllable linear adjustment of the applied vacuum. The aperture can have a trilateral shape including at least one curved side, or comprise a plurality of sub-apertures, and the movable member can comprise a rotary sleeve.

Abstract: A magnetic valve device includes a valve receiving device and a valve insert of a magnetic valve which is received in the valve receiving device. A high pressure resistance is obtained in one of the modes of embodiment. The magnetic valve device includes either a pressure mechanism configured to press the valve insert against the valve receiving element or a sealing element arranged in a notch in the valve insert or a sealing element arranged between an axial filter and the valve insert.

Abstract: A subsea valve comprises a valve gate (4) moveable within a valve cavity (3) and a main passageway (2) extends transversely of the cavity. At least one annular valve seat (6) is in communication with a respective portion of the main passageway and extends to engage the gate. An annular pocket (7, 7a) accommodates an end of the respective seat remote from the valve gate. The seat has at the said end an annular buffer (54) in radial engagement with the pocket (7) and comprising a multiplicity of cantilever springs (55) each extending radially and circumferentially of the rim of the seat.

Abstract: In one embodiment of the invention, a valve apparatus is provided to proportionally control fluid flow. The valve apparatus includes a housing having a valve body with an inlet port having a valve seat and an outlet port; a valve assembly including an armature, a movable fluid control member, and at least one spring biasing the valve assembly into a closed position, a diaphragm in contact with the valve seat of the inlet port when the valve is in the closed position, and a poppet plate backing the diaphragm, in contact with the fluid control member and extending beyond the valve seat on the inlet port. The valve apparatus also has a solenoid assembly including an electromagnetic coil and a pole piece, the solenoid moves the armature when energized to allow fluid to flow through the valve apparatus.

Abstract: The current invention provide a microfluidic valve having a housing that includes a microfluid control port disposed adjacent to a microfluid exhaust port, where a movable rigid material having a first diameter is disposed in the housing between the microfluid control port and the microfluid exhaust port. The housing further includes a microfluid pressure port having a first microfluid pressure. The microfluid pressure port is connected to the microfluid exhaust port by a microfluid valve orifice having a second diameter, where the first diameter is larger than the second diameter, and when a second microfluid pressure is applied to the control port the moveable rigid material closes the microfluid valve orifice, where the first microfluid pressure is greater than the second microfluid pressure.

Abstract: A ball valve comprises a housing, a first seat surface, a second seat surface, wherein the first seat surface and the second seat surface are fixed relative to each other, and a ball rotatably movable within the housing and contacting at least one of the first seat surface and the second seat surface to form a seal within the ball valve; wherein pressure acting in a first direction and in a second direction opposite the first direction increases the contact pressure of the first seat surface and the second seat surface with the ball.

Abstract: A venturi valve pressure compensator apparatus and method include a venturi valve with an inlet and an outlet and with a small diameter opening at the inlet and a large diameter opening at the outlet and with an air intake opening. An insert, with a front and a back, is provided such that the front of the insert faces the small diameter opening of the venturi valve. At least one hole is provided in the insert that extends through the insert from front to back. A pressure seal is located at the back of the insert, the pressure seal conformed to seal leaks around the insert and force fluid to flow through the at least one hole.

Abstract: For a vacuum valve comprising a valve housing (1) with a valve opening, a valve seat surrounding the valve opening, a closing element (9), and at least one peripherally closed seal (10, 11) that is arranged on the closing element (9) and has first and second seal main sections (14, 15) and first and second seal connecting sections (16, 17) allocated to first and second seat main sections arranged offset relative to each other in a direction of the axis (3) of the valve opening (2) and first and second seat connecting sections, is provided, with the seal extending in a groove that is defined, when viewed in cross section, by two side walls and a base wall. The first seal main section (14) is arranged on a front end face (18) of the closing element (9) with respect to the closing direction (8) of the closing element and has a middle part (19) in which the seal (10, 11) extends in a straight line.

Abstract: A closing unit for a vacuum valve includes a first valve plate (7) for closing a first valve opening (2) of the vacuum valve, a second valve plate (8) for closing a second valve opening (3) of the vacuum valve, and a carrier plate (19) that lies between the valve plates (7, 8) to which the valve plates (7, 8) are fastened detachably. For fastening a corresponding valve plate (7, 8) to the carrier plate (19), at least one clamping piece (20, 21) is used by which interacting clamping surfaces (22-26) are clamped with each other. Of the interacting clamping surfaces (22-26), at least one is constructed as an angular surface by which the corresponding valve plate (7, 8) is pressed against the carrier plate (19).

Abstract: A pressure-sensing valve comprises a first housing part, a second housing part, a first regulating knob, a second regulating knob, a valve piston, an upper washer and lower washer, and a pair of springs. The housing parts each has an inner space for moveably receiving the other elements therebetween, and connected with the regulating knobs by a threaded portions. The regulating knobs adjustably abut against the opposite ends of the pair of springs to shift the balanced position thereof to a gating position for closing the pressure-sensing valve under a desired compressed length of the springs and opening for temporarily responding to the acceleration of engine.

Abstract: The present application relates to an arrangement for selectively providing a plurality of output forces, such as for example, a higher and a lower output force or a predetermined, time dependent output force. In one embodiment, a first piston assembly is moveable between a first and a second position and a second piston assembly moveable between a third and a fourth position. When the first piston assembly is in the first position, the second piston assembly is selectively movable between the third position and the fourth position. When the first piston assembly moves the second position, it moves the second piston assembly to the fourth position.

Abstract: A nozzle (11), for example for a liquid fuel delivery system, has a shut-off valve (17) closed by a magnetic closing force. In the open condition the valve (17) moves against a closing spring (31); the magnetic force weakens as the spring force increases.

Abstract: The present invention relates broadly to a valve (10) comprising a valve body (14) connected to a valve member (16). The present invention relates broadly to a valve (10) comprising a valve body (14) connected to a valve member (16). The valve body (14) includes a fluid passageway (18) across which the valve member (16) is connected. The valve member (16) includes a plurality of valve elements such as (20A and 20C) which are moveably coupled to the valve body (14) to permit opening and closure of the valve (10). The valve member (16) includes a collapsible opening (22) located at or adjacent an apex of the conical-shaped valve member (16). The valve (10) includes a series of resilient hinges such as (30A and 30C) disposed about a perimeter of the valve member (16). The resilient hinges (30A and 30C) are substantially straight and configured to minimise the force required in deflecting the valve elements such as (20A) to open valve member (16) and expose the collapsible aperture (22).

Abstract: A trunnion type ball valve having valve seats that are laterally moveable within seat recesses of the valve and establish sealing engagement with a valve ball member that is trunnion supported for rotational movement between open and closed positions. The valve seat members are self-centering for optimum sealing engagement with the spherical sealing surface of the ball member. The internal geometry of the seat assemblies are designed to permit optimum flow through the valve mechanism even under circumstances where the seat members are located in laterally off-center relation with respect to the centerline of the flow passages due to self-centering seat movement. The ball valve is readily adapted for fire-safe application via the use of heat resistant seals and metal-to-metal sealing of components to prevent or minimize leakage in the event of seal destruction or degradation by excess heat.

Abstract: The invention relates to a shut-off device for a waste-water inspection chamber which has an upwardly open gutter in its interior with an inlet opening and an outlet opening for the waste-water flow, comprising a shut-off member which is arranged in front of the inlet opening, can be pivoted upwardly through the flow force of the waste-water flow and can be held and released by a magnetic catch, with the magnetic catch tightly holding the shut-off member against the inlet open in the shut-off position and releasing it again on a defined water pressure acting on it in the flow direction for the release of the inlet opening.

Abstract: The present invention provides a two-stage turbocharger unit having a valve that will help to create a smooth transition of exhaust gas energy from the high-pressure turbine (HP) turbine to the low-pressure (LP) turbine. The LP and HP turbines are positioned such that the valve can be in one position to force all of the exhaust gas to flow through the HP turbine and when in another position to force all of the exhaust gas through the LP turbine. When the valve is placed in an intermediary position, the exhaust gas can be variably directed to flow through both turbines, with the percentage of exhaust gas flowing through each turbine being dependent on the position of the valve.

Abstract: A thermal deburring apparatus has a pressure-tight closeable deburring chamber connected to an environment via a ventilation passage having a passage direction; a ventilation valve closing said ventilation passage and having a stationary valve seat encompassing said ventilation passage, a valve tappet that is movable in said passage direction, and a seal affixed to said valve tappet.

Abstract: A motor-operated damper device includes a baffle driving device equipped with a motor, a baffle that is driven by the baffle driving device, a frame defining an opening section that is closed and opened by the baffle, the opening section having a peripheral edge section, and a buffer member that is attached to the baffle and that resiliently deforms and contacts the peripheral edge section of the opening section when the opening section is closed by the baffle. A detent torque of the motor is used to maintain a stopping state in which the buffer member is resiliently deformed to provide a close contact with the peripheral edge section of the opening section. The motor-operated damper device includes a stopper that allows an appropriate amount of elastic deformation of the buffer member and yet prevents the peripheral edge section of the opening section from excessively sinking into the buffer member.

Abstract: A valve including: a bonnet; a body secured to the bonnet and including at least two ports and at least one weir positioned between the ports; a valve stem being movably coupled with the bonnet, the valve stem including first and second longitudinal ends, and a recess in the first longitudinal end; a diaphragm positioned substantially adjacent to the second end of the valve stem so as to be deflectable towards the weir by the valve stem to restrict a flow between the ports; a handwheel rotatably secured to the valve stem so as to enable a torque to be applied to the valve stem, the handwheel including a longitudinal aperture; and, a screw directed through and engaged with the handwheel aperture and being selectively engagable within the recess of the valve stem, such that the valve stem and handwheel remain in a constant relative longitudinal position with respect to one another, and when the diaphragm sets against the weir the handwheel abuts the bonnet to serve as a closing lift valve stop.

Abstract: A gate valve device which includes a partition wall having an opening, a valve member movable along the partition wall to open or close the opening, a driving system for moving the valve member, and a pressing mechanism for pressing the valve member toward the partition wall. The pressing mechanism has a pressing member projectable toward and retractable from the valve member, wherein the pressing mechanism presses the valve member against the partition wall when the valve member is in a position closing the opening.

Abstract: A force and multiplication control valve which utilizes ball leverage to produce multiplied forces on a ball lock seat device. Constantly changing wear surfaces provide self-cleaning and self-compensating wear characteristics to provide extremely high reliability of the device of the present invention. Non-hardened metals can be used because of the self-compensating wear characteristics. High pressures can be handled by the valve of the present invention because of the ability to use metals for metal contact surfaces to produce a valve seal. Additionally, the present invention can be used with many fluids which would normally be corrosive to materials used in valves employing rubber-type seals. The device can be configured to act as a pressure regulator control valve, a solenoid valve and can be used with various fluids including gases and liquids.

Abstract: A rotary valve has a valve body with a pair of fluid ports providing fluid exits on a face of the valve body. The fluid ports are connected to corresponding fluid channels in the valve body extending between the fluid ports and fluid inlet connections to the valve body. A fluid control plate is positioned in contact with the face of the valve body and extends across the fluid ports. The control plate has a fluid channel therein which is dimensioned to extend between the fluid ports in one position of the valve plate. The valve plate is axially mounted on an output shaft of a drive motor which is connected to the valve plate by a coupling shaft. The face of the valve body and the contacting face of the valve plates are ground precisely flat and after hard anodizing are coated with a low friction coating such as molydisulphide. The motor is arranged to urge the valve plate parallel to and against the face of the valve body by the weight of the motor and the connecting elements between the motor and the valve.

Abstract: A valve for a concrete pump having a front valve closing portion which in the closed position prevents flow through a T-pipe section, a supporting structure secured to the T-pipe section and an annular sealing band carried by the supporting structure and positioned about the valve closing portion.