Abstract: The valve controller is driven by a motor. The valve controller has a control circuit and a driving circuit. The driving circuit drives a motor based on a control signal generated by the control circuit and a rotational position signal generated by a rotational position sensor. The driving circuit generates a rotation number signal representing an actual rotation number of the motor according to the rotational position signal, and transfers the rotation number signal to the control circuit.

Abstract: Apparatus for actuating a valve includes a support frame and at least one valve driving linkage arm, one end of which is rotatably connected to a valve stem of the valve and the other end of which is rotatably connected to a screw block. A motor connected to the frame is operatively connected to a motor driven shaft which is in threaded screw driving relationship with the screw block. The motor rotates the motor driven shaft which drives translational movement of the screw block which drives rotatable movement of the valve driving linkage arm which drives translational movement of the valve stem. The valve actuator may further include a sensory control element disposed in operative relationship with the valve stem, the sensory control element being adapted to provide control over the position of the valve stem by at least sensing the travel and/or position of the valve stem.

Abstract: The present invention provides a motorized valve actuator wherein the drive from the motor to the output shaft of the actuator is via a worm and worm wheel or other gear mesh which is incapable of being back driven, the actuator having an alternative manual drive, the manual drive comprising a hand wheel and a clutch and lever to change from motor power drive to hand drive mode, the actuator further having an intermediate shaft between the motor and output shaft, the hand wheel being carried by or at least operatively linked to the intermediate shaft to drive the intermediate shaft, the clutch mechanism being associated with/mounted on the intermediate shaft, the intermediate shaft being positioned between the motor and the worm/worm wheel drive whereby the clutch mechanism associated with/mounted on the intermediate shaft operates substantially freely when the lever is operated to bring the actuator into hand drive mode, the output shaft torque generated by the previous motor powered run and locked into the

Abstract: Isolating device, in particular for an injection valve with a turning spindle, rotatably mounted in a device housing, actively connected to a drive device, for the variable displacement of an operating element for an isolation stop valve, connected to the turning spindle, by means of a gearbox unit. The aim of the invention is to improve said isolating device such that the above may be operated in a simple and controllable manner, whereby the control of the isolating device may be carried out from a remote position and in a secure manner. Said aim is achieved, whereby the drive device comprises at least two individually or synchronously operable electric motors and the gearbox unit comprises at least one in particular self-locking drive unit, said drive unit being connected to both electric motors for turning the turning spindle.

Abstract: An air passage opening/closing device includes a film member for opening and closing an opening of an air passage of a case. One end of the film member is fixed to a fixing portion on an outer periphery of the opening of the air passage, and the other end thereof is connected to a film winding shaft. A moving member movable by rotation of a drive shaft is provided on the opening, and the film winding shaft is moved while being rotated by the movement of the moving member, so that the film member at the other end side is wound around and unwound from the film winding shaft. Accordingly, when the air passage is opened and closed by the film member, sliding friction can be prevented from being generated between the film member and the case.

Abstract: A hand-operated hemispherical or spherical valve that provides an improved seal when dealing with fluids containing, or consisting entirely of, particulate matter is provided by the present invention. The valve utilizes an inflatable elastomeric valve seat that interacts with a primary closing member to permit or restrain the flow of fluids or particulate matter in a channel. The valve is opened and closed by turning a handwheel that is connected to a drive shaft. A sleeve having a cam is mounted on the drive shaft such that the cam engages a pressurized gas supply switch that inflates the inflatable elastomeric valve seat or seats when the hand wheel is turned to a closed position. Conversely, when the hand wheel is turned to an open position, a valve drive shaft, key and keyway function in conjunction with the drive shaft to turn the sleeve and disengage the cam such that the elastomeric valve seats are deflated prior to the primary closing member moving out of the closed position.

Abstract: A self-locking device for a gear set is configured to permit forward-driving an input in either of first and second rotational directions and for substantially preventing an output from being back-driven in either of the rotational directions. The device includes a gear disposed to rotate with a drive shaft. The device further includes first and second releasable couplings coupled to the gear and, respectively, to first and second ratchets. The first ratchet is disposed to prevent rotation in a first direction and to permit rotation in a second direction. The second ratchet is disposed to prevent rotation in the second direction and permit rotation in the first direction. The device may be useful, for example, in a valve gearbox. A gearbox and a method of fabricating a gearbox are also disclosed.

Abstract: The invention relates to a blowout valve assembly (blowout preventer (BOP)) (1) comprising a connecting channel (3), which can be closed by at least one closing device (2), whereby the closing device (2) can be transversally displaced with regard to the connecting channel (3) by means of a drive device (4). The aim of the invention is to further improve a blowout valve assembly of this type in order to enable this assembly to be precisely and easily actuated by remote control and while, at the same time, reliably preventing an unintentional opening of the closing device. To this end, the drive device (4) comprises at least two electric motors (5, 6), which can be operated individually or in a synchronized manner, and comprises a transmission device (7) having at least one irreversible transmission unit (8). In order to displace the closing device (2), said transmission unit (8) is drive-connected to both electric motors (5, 6).

Abstract: A gear for use as the pinion in a rack and pinion gear includes spur gear teeth that have an upper portion of the face cut in a worm cut so the gear is effective as a worm wheel for a worm gear while retaining involute curved faces so it is effective as the pinion for the rack. The rack, pinion, and worm driver are connected. When the worm gear connected to a shaft, power is transmitted from the shaft to the rack via the worm driver and pinion with all gears making line contact instead of point contact. This improvement turns one gear piece into two gears. The rack pinion can be geared to a worm gear while it is also matched up with a straight cut rack. In this way the gear translates force between the two different types of gears.

Abstract: An improved butterfly damper for air delivery systems, having multiple rotatable blades, and a centrally located blade rotating, or actuation means. Each blade comprises an offset, or displaced portion to allow concealment of the actuation mechanism upon closure. This offset portion allows the blades, upon closure, to meet and form a seal around the least complex portion of the actuation mechanism.

Abstract: An actuator for opening and closing a globe valve. The globe valve has a stem through which positioning of the globe valve is achieved. The globe valve is normally biased to open position. The actuator comprises an electric motor which drives a worm and pinion arrangement. The pinion drives an output gear which gear is movable between a base and a raised position within a frame and held in the base position by a compression spring with a similar compression rating to that of the required valve shutoff. The output gear drives a worm stem bearing against the stem of the globe valve to move it against its bias in one direction to close the globe valve. The output gear and worm stem are arranged so that, when the globe valve is fully closed, the worm stem is at its extreme position in that one direction and the output gear then begins to move within its frame from its base to its raised position.

Abstract: A multiple mode valve assembly including valve actuators equipped with a combination of a shaft (4) and a spindle (5), coaxial and immobilized in an axial direction, but capable of rotating freely one with respect to the other, so that by means of the spindle (5), through a threaded nut assembly (6) and the pertinent motor (9), the longitudinal displacement of the gate (3) is produced in valve opening and shutting operations, whilst by means of direct application of a rotary movement to the shaft (4), which does not affect the spindle (5), from a second motor (23), the gate (3) turns on the valve seat (2), in the shut position, producing a friction effect and consequent self-cleaning of the seal.

Abstract: An apparatus (30) and method for adjusting an actuator (32) on a real-time basis includes a rack (40) extending axially over at least a portion on an outer surface of an adjustable member (36). The actuator (32) has a bore (42) that extends from the rack (40) to the outer surface (44) of the actuator (32) to receive an adjustment member (46). The adjustment member (46) includes a pinion (48) at one end for engaging the rack (40) while the adjustment member (46) is situated out of the functional flow or positioning area. Engagement of the pinion (48) of the adjustment member (46) with the rack (40) on the adjustable member (36) provides a real-time adjustment of the actuator (32) to a desired position or setting which then may be fixed or locked into that position.

Abstract: A declutchable manual override gearbox, comprising a casing, and a drive shaft mounted for rotation within the casing. The drive shaft has an input end and an output end, the input end of the drive shaft adapted to engage the output of a rotary actuator and the output end of the drive shaft adapted for attachment to a device or mechanism, for example the drive linkage for a damper valve, to be driven by the actuator. A manual override is provided for manually rotating the drive shaft, the gearbox also including a clutch arrangment for selectively rendering the manual override inoperative. Attachments associated with a base portion of the casing enable mounting of the gearbox on an underlying support stand.

Abstract: An intake relief valve comprises a bronze sectional gate positioned within the valve chamber adjacent to an outlet section of the valve. A quick attachment coupler of the valve connects the outlet section typically to a pumper fire truck, and a hose from a hydrant or draft source connects to an opposite inlet section of the valve. When the valve is closed and the hose is disconnected from the valve with the valve connected to the pumper fire truck, there is no water remaining in the valve chamber. Any residual water is released by a pit drainage outlet on the bottom wall of the valve. Not having water stored in the valve eliminates corrosion problems within the valve, when the valve is connected to the pumper fire truck.

Abstract: An valve actuator in a hydronic heating and cooling system includes a motor for changing the position of a valve, a switch for switching power to the motor, and a sensor for detecting the arrival of the valve at a desired position and for stopping the motor without using a mechanical stop. The motor's power source includes a capacitive power source which can be used to drive the motor under low-power conditions. A worm gear is used in the drive train, and combined with a clutch assembly to permit the valve to be operated manually.

Abstract: An arm-driven sleeve valve utilizes a single pin connection to transmit torque from a shaft of the sleeve valve to a pair of arm portions suspended therefrom for controlling the flow of fluid from the valve by axially moving a gate. The single pin connection is centrally positioned between the arm portions and ensures the each of the arm portions exerts an equal force on the gate, regardless of torsional deflection of the shaft. Use of the invention allows arm-driven sleeve valves to be driven asymmetrically from only one of opposite axial ends of the shaft without tending to bind the gate against the main body of the valve.

Abstract: A motorized servo actuator has an output shaft rotated by a sector gear driven by a worm. The worm has a co-axially disposed torsion spring which is wound as the worm rotates. The worm is driven by a motor and gear train. In the event of motor failure during rotation of the sector gear in a given direction from an initial position, the wound torsion spring has sufficient stored energy to rotate the worm to return the sector gear to the initial position.

Abstract: A safety valve to stop flow in the flow pipe (3), the safety valve including a drilling device (8) with its frame (6) to drill a hole in the flow pipe, a winding device (7) fixed to the frame of the drilling device and a band (4) wound with a winding device. The safety valve includes a sleeve to which sleeve a drilling device (8) and a winding device (7) have been fixed and the sleeve has been equipped with systems to fix it to the outside surface of the pipe (3).

Abstract: An air distribution device comprises a casing (10) provided with a cylindrical wall (12) having at least one air passage opening (14, 16), a shutter (20) mounted so as to pivot with respect to an axis of rotation (X—X) and having a generally cylindrical obturation wall, which is mounted so as to movable with respect to a body of the shutter, consisting of two plates, in a direction substantially radial with respect to the axis of rotation (X—X) of the shutter by virtue of movement means (46, 48) synchronised with the rotation of the shutter, which makes it possible to move the obturation wall (24) away from the wall (12) when the shutter is in an open position (P1, P2) and bring the obturation wall (24) closer to the wall (12) of the casing when the shutter is in a closed position.

Abstract: An valve actuator in a hydronic heating and cooling system includes a motor for changing the position of a valve, a switch for switching power to the motor, and a sensor for detecting the arrival of the valve at a desired position and for stopping the motor without using a mechanical stop. The motor's power source includes a capacitive power source which can be used to drive the motor under low-power conditions. A worm gear is used in the drive train, and combined with a clutch assembly to permit the valve to be operated manually.

Abstract: A water shut-off system incorporates a water shut-off valve utilizing a pair of adjacently disposed electrodes, a transmitter and a receiving means. The water shut-off valve is in the form of a ball valve. A timing logic causes current to flow to a valve driving motor as electric pulses.

Abstract: A flow control valve for allowing the flow to be controlled on a proportional basis using a direct current(DC) motor thereby improving the flow control function. The flow control valve is constructed in a manner that a valve housing having a guide space and an inlet and an outlet is formed on the both sides of the valve housing, the inlet and the outlet being in communication with each other through the guide space. A spool is installed inside the guide space of the valve housing and up/down movably coupled therein so as to control the opening of the outlet. A spool guide is placed on the upper side of the guide space passing through liquified coolant by moving up/down along with the spool. A elastic support elastically supports the spool guide to one direction. A sealing member prevents the leakage of liquefied coolant by surrounding the spool on the lower side of the valve housing. A driving mechanism moves the spool up/down by use of a DC motor.