Abstract: An adjustable mechanism for a valve or actuator is provided. The adjustable mechanism cooperates with one or more pistons, which in turn cooperates with a valve element to limit the axial displacement of the valve element relative to the valve seat. The adjustable mechanism can be adjusted axially, thereby providing a greater or lesser distance for the piston and diaphragm to travel. Embodiments incorporating the adjustable mechanism include a trickle valve, an on/off valve and a mixing valve. The adjustable mechanism also provides to the adjustment of the piston stroke to match or closely mirror the stroke of the vale element.

Abstract: A single handle mixing valve of the plate valve type where a single stem controls both the temperature and flow output from the valve. A control plate having an opening is positioned over the stem and has at least one surface defining limits of stem movement. An actuating ring positioned within an exterior cover for the mixing valve has inwardly facing cam surfaces, which interact with the control plate to adjust either maximum temperature or maximum flow from the valve. The actuating ring has a tab extending to the outside of the exterior cover for convenient operator manipulation without the need for disassembly or the use of tools.

Abstract: A hydraulic blowout preventer operator comprises a piston rod having one end coupled to a closure member. The operator further comprises an operator housing having one end coupled to a bonnet and a second end coupled to a head. The piston rod extends through the bonnet into the operator housing where it is coupled to a piston that is disposed within the operator housing. The piston comprises a body and a flange. A flange seal is disposed on the flange and is sealingly engaged with the operator housing. A body seal is disposed on the body and is sealingly engaged with the operator housing. The flange seal has a sealing diameter greater than a sealing diameter of the body seal.

Abstract: A valve actuator includes a body having at least a first side and an interior. A rotatable, threaded drive screw extends into the body and projects out of the body first and second sides. The drive screw comprises an insertion portion and a distal end portion. A traveling nut is threadingly captured on the drive screw in the body interior. The traveling nut is held against rotation whereby it travels along the drive screw as the screw rotates. An actuator arm engages the nut and is configured to be urged between valve open and closed positions as the traveling nut travels along the drive screw. A first collar is attached to at least a portion of the drive screw insertion portion and has at least a bearing for rotatably engaging the body. A second collar is attached to at least a portion of the drive screw distal end portion and has at least a bearing for rotatably engaging the body.

Abstract: A blowout preventer operator locking system comprises a piston rod having one end coupled to a closure member. The operator further comprises an operator housing having one end coupled to a bonnet and a second end coupled to a head. The piston rod extends through the bonnet onto the operator housing where it is coupled to a piston that is disposed within the operator housing. The piston comprises a body and a flange. A sleeve is slidingly disposed within a cavity disposed within the piston and is rotationally fixed relative to the piston. A lock rod is rotatably coupled to the head and is threadedly engaged with the sleeve so that rotation of the lock rod axially translates the sleeve relative to the piston.

Abstract: A valve actuator comprising a lower housing comprising a mounting spool that is operable to couple to a valve body. A rotating sleeve is disposed within the lower housing and coupled to a stem connector. A fixed sleeve in disposed within the lower housing and includes a first slot disposed therethrough. A second slot is disposed in the rotating sleeve, wherein at least one of the slots is a helical slot. An axle engages both the first slot and the second slot. A shaft is coupled to the axle and extends through a connector flange that is coupled to an upper end of the lower housing. A piston is coupled to the shaft and movably disposed within an upper housing that is coupled to the connector flange. Axial movement of the piston within the upper housing will result in rotational movement of the rotating sleeve.

Abstract: A flow valve that provides for control of a fluid flow rate utilizing a first open position and a second open position. Various embodiments of a flow valve having an inlet, an outlet, and a passageway therebetween are provided that comprise a damper element pivotally arranged within the passageway that is movable between a first position in which fluid flow through the passageway is substantially unaffected by the damper element, and at least a second position in which fluid flow through the passageway is substantially reduced by the damper element. An adjustable stop is further provided for adjustably limiting the movement of the damper element to establish the second position of the damper. A moveable operator is provided for moving the damper element between the first position and second position.

Abstract: The present invention is a post yard hydrant with controlled adjustable flow. The post yard hydrant includes a valve housing located below ground level for connection to a water supply under pressure, a head portion with an integral discharge nozzle positioned above ground level, and a casing portion with a first end connected to the head portion and a second end connected to the valve housing. The post yard hydrant further includes an operating rod disposed in the casing portion for reciprocation therein and an operating means configured to interact through a flow control linkage to reciprocate the operating rod. The flow control linkage is adapted to adjust water flow from a trickle level to a full pressure level.

Abstract: A pinch valve is provided with a main body (10) accommodating a tube body (11), a cylinder body (2) having an upper cylinder portion (17) and a lower handle support portion (3), a piston accommodated in the cylinder portion, a pressing piece (9) fixed to the piston for pressing the tube body, a cylindrical handle (1), a hollow stem (4), and a piston pusher (5, 6). The handle has a female screw portion, and a male screw portion having a pitch larger than the pitch of the female screw portion and adapted to be screwed with the female screw portion formed on the handle support portion. The stem has a male screw portion adapted to be screwed with the female screw portion of the handle on outer periphery, and is accommodated in the cylinder body. The piston pusher is inserted into the stem so that the bottom end surface thereof comes into contact with the top end of the piston and is urged toward the piston by a spring.

Abstract: A deformable fastener is provided. The fastener includes a first member having a cavity and a second member sized to be rotatably attached within the cavity. The fastener further includes a protrusion disposed on either the first or second member for locking engagement with a corresponding portion of the other of the first or second member when the first member is attached to the second member. The protrusion is sized and configured to deform both an inner and outer surface of the corresponding portion to assist in maintaining the locking engagement.

Abstract: In a switching valve containing a valve member for opening and closing a valve seat and a piston for driving the valve member by the action of a pilot fluid pressure inside a valve housing, a magnet for positional detection is attached to the piston, two sensor attachment grooves extending in the direction of the axial line L of the switching valve and having different groove lengths in accordance with the operational position are formed in parallel on the side face of the valve housing, and magnetic sensors are attached at locations on the side of the innermost end wall in the attachment grooves.

Abstract: Disclosed is a two-port valve in which a fluid passage between two ports is gradually openable without a rapid flow rate, by stepwise lifting a valve member off a valve sent using two pistons, to open the valve in a phased manner. A cylinder portion 2 for driving a valve member 4 has a first piston 24 through which a valve shaft 11 slidably extends, a sleeve 35 movably disposed in a second pressure chamber 27 to limit an operating stroke of the first piston 24, and a second piston 37 slidably disposed in the sleeve 35 and connected to the shaft 11. In an initial phase of opening of the valve, the pistons 24, 37 acting like a unit are together moved to a position at which the first piston 24 contacts the sleeve 35, to slightly open the valve member 4. Thereafter, the valve member 4 is moved by the second piston 37 to its fully open position.

Abstract: A suspension system that includes a simplified lockout mechanism and an adjustable blow-off mechanism. The system includes a valve mechanism and a valve actuating assembly, a valve mechanism housing and a resilient member disposed between the valve mechanism and the valve mechanism housing. The valve mechanism is slidably mounted along the valve mechanism housing and it separates a first chamber from a second chamber. The valve actuating assembly operates the valve mechanism between open and closed positions. The resilient member is configured to be deformable by the valve mechanism as the valve mechanism is slidably displaced by an increasing pressure in the first fluid chamber. The sliding valve mechanism is configured to collide against the valve actuating assembly when a blow-off pressure is reached in the first fluid chamber switching the valve mechanism from the closed position to the open position.

Abstract: A vacuum regulating valve which is simplified in structure and where the flow rate characteristic in evacuating a vacuum vessel is improved, comprises (i) a main valve 1A of a large size which has: a principal body 4 having two main ports 11, 12 connected to a vacuum vessel 7 and a vacuum pump 8, respectively, a valve seat 14 disposed in a fluid passage connecting the ports 11, 12, a valve element 15 seated on and separated from the valve seat 14, and a shaft 20 extending from the valve element 15; and a valve element operating unit 5 for operating the valve element 15 via the shaft 20, and (ii) a sub valve 2A of a small size similar in structure to the main valve 1A. The sub valve 2A is attached to an outer side surface of a casing 10 of the main valve 1A.

Abstract: Methods and apparatus for regulating fluid pressure are described. A fluid regulator with relatively large passages and a high-pressure reserve may improve performance when the regulator is used in a sustained sequence. A smaller area stem piston may make the regulated pressure more independent of the input pressure.

Abstract: A nitrous oxide or fuel control valve has flow control of nitrous oxide from a fluid-delivery aperture (7) or flow control of fuel from a fluid-delivery aperture (8) into a injection nozzle (22) of an intake manifold of an engine by actuation of an adjuster coupler nut (11) with an actuation piston (14) that is actuated with gas pressure from an actuation-pressure source (43) with an actuation on/off valve(25). It can be structured for low-weight, short-term needs for racing and other sports uses or for heavier long-term needs of engines.

Abstract: A single handle mixing valve of the plate valve type where a single stem controls both the temperature and flow output from the valve. A control said characteristic plate having an opening is positioned over the stem and has at least one surface defining limits of stem movement. An actuating ring positioned within an exterior cover for the mixing valve has inwardly facing cam surfaces, which interact with the control plate to adjust either maximum temperature or maximum flow from the valve. The actuating ring has a tab extending to the outside of the exterior cover for convenient operator manipulation without the need for disassembly or the use of tools.

Abstract: A vacuum regulating valve has high controllability, wherein the opening of a valving member can be quickly and accurately controlled by using a small and inexpensive electric motor. In accordance with a signal indicative of a pressure set value and a pressure signal from the pressure sensor, the main controller in the valve control section outputs a signal for setting the opening of the valving member to a motor controller that controls the electric motor, and performs control to cause a pilot fluid to be supplied to a pressure receiving chamber of the piston, thereby causing the piston to move to the position of abutment with the stopper.

Abstract: There is disclosed a flow control valve which regulates a flow rate by determining a stop position of a piston by contact in an opened state, and which enables remote and high-precision flow rate regulation. In a closed state, an urging force of a return spring acts on a piston, bringing a diaphragm into close contact with a valve seat. In this state, when compressed air is supplied into a pilot chamber, moving the piston, the diaphragm is brought out of contact with the valve seat. Then, the piston comes into contact with a nut and the diaphragm is stopped providing a fixed clearance between the diaphragm and the valve seat. An opened state is established. Of course, the nut can be moved to any desired position by means of a serve motor or the like, so that a position at which the piston comes into contact with the nut can be changed.

Abstract: A hands-free device includes a sensor, a motor, a pilot valve, a gear train, an arm, and, an override control. The pilot motor opens the pilot valve when an activation signal is received from the sensor. The arm is coupled to the gear train, and the override control is coupled to the arm. The override control is capable of moving the arm between a locked and unlocked configuration.

Abstract: A vacuum regulating valve includes a valve casing provided with two main ports, a passage connecting the two main ports, a valve seat formed in the passage, a valve element capable of being seated on the valve seat, a valve stem extending from the valve element, and a piston attached to the free end of the valve stem. A valve opening setting unit includes a valve opening setting shaft having a free end held in contact with the back surface of the piston, and a driving mechanism capable of continuously axially moving the valve opening setting shaft to a desired position to set the piston at an operating position corresponding to a desired valve opening.

Abstract: The present invention provides a diaphragm valve moveable between a fully open position and a fully closed position, the valve comprising: a bonnet having a first thread and an abutment surface; a stem having at least one aperture and a second thread that cooperates with the first thread to allow the stem to be axially moveable relative to the bonnet; a handwheel being freely rotatable on the stem and freely axially slidable on the stem and having a stop with a surface for contacting the abutment surface of the bonnet; and a pin extending through the handwheel and into the at least one aperture in the stem for limiting rotary motion of the handwheel relative to the stem. In one aspect of the invention, the at least one aperture is a slot. In another aspect of the invention, the at least one aperture is a plurality of apertures.

Abstract: A valve apparatus for an air tool which has a valve rotatably disposed in a cylinder portion of a body of the air tool in which an air motor is accommodated; and a lever fixed to the valve and slidably received within a slit-shaped opening formed in the cylinder portion. The valve includes a first disc portion having an air inlet, a lever-fixing portion having an air passage which communicates with the air inlet, and a second disc portion having an air outlet which communicates with the air passage. The lever-fixing portion is narrower than the first and second disc portions. The lever has a knob portion slidable within the opening and a generally U-shaped engagement portion fixed to the lever-fixing portion so that two legs of the engagement portion sandwich the lever-fixing portion from diametrically opposite sides.

Abstract: A ball stop valve (10) allows liquid to enter a reciprocating piston pump when internal suction is great enough to raise the ball (13) and create a space between the ball (13) and a seat (9). This invention allows the user to easily insert or remove rings (15) into the ball inlet valve, either above or below the ball (13), so that the space between the ball (13) and the seat (9) can be adjusted. The valve (10) is easily accessible to the user and all components of the ball valve (10) are removable.

Abstract: A valve includes a housing having two inlets and an outlet formed in a bottom panel, a seat secured in the housing and having two ports and an aperture aligned with the inlets and the outlet of the housing. A rotary member is rotatably received in the housing, and engaged onto the seat, and includes a bore communicating with the aperture of the seat, and two slots selectively communicating with the ports of the seat when the rotary member is rotated relative to the housing and the seat. The seat and the rotary member are made of porcelain materials to make a water tight seal without spring members.

Abstract: A ceramic spindle for a faucet is disclosed. The spindle has a housing of which the top portion is a protruded edge having teeth to connect with a rotating rim seat having teeth surface. The top face of the rim seat is protruded to form a positioning block and the rotating shaft is a rotating-stop mounting rim of a rotating-stop protruded block. The combination of the protruded block and the rotating rim seat, the range of rotation of the water-distribution disc is controlled. As such, the adjustable control of hot and cold water is achieved. By replacement of the rotating-stop mounting rim on by placing a plurality of the mounting rim onto the rotating shaft, the range of rotating shaft can be changed and thus the ceramic spindle can be easily changed and the pattern of water control can be obtained.

Abstract: A valve having a valve body, a rotary valve member, a valve handle, and a selectively repositionable valve handle stop member. The valve body includes first and second openings into which the stop member may be installed. The openings are provided on opposite sides of the lower end of the valve handle such that, when the stop member is installed in the first opening, the valve handle is rotated in a first direction between a first orientation, which corresponds to the valve member being full open, and a second orientation, which corresponds to the valve member being full closed. Alternatively, when the stop member is installed in the second opening, the valve handle is rotated in a second, opposite direction to move the valve member from the full open to the full closed position. When no stop member is installed, the valve member is sequentially moved from the full closed position, to the full open position, and then to the full closed position as the valve handle traverses a 180° arc.

Abstract: A diaphragm operated valve having the diaphragm attached at its lower end to a valve closure plug, and movable therewith, and attached at its upper end to a portion of valve body that forms the pressure cavity. The diaphragm has a stepped portion between its upper and lower ends which folds back on itself when the valve opens. The valve body has shoulder portions that support the diaphragm when the valve is closed to avoid stressing the diaphragm material due to pressure in the pressure chamber. This allows the outside diameter of the diaphragm to be minimized, and eliminates the need for fabric reinforcement. A filter screen is positioned flush with the surface of the valve plug so that high velocity flow across the screen while the valve is opening and closing removes accumulated dirt thereby making the screen self cleaning.

Abstract: A device for adjusting an armature stroke of an armature upon actuation of a magnet of an electromagnetic valve having a stop bush disposed in an axial guide relative to a main body of the electromagnetic valve and adjustable in its axial position relative to the main body of the electromagnetic valve, which stop bush forms a stop for limiting the armature stroke in an axial direction. A variable adjusting element with two threaded portions providing a variable thread pitch (P) and the same thread direction by which the position of the stop bush is adjustable. The first threaded portion engages a corresponding first threaded portion of the stop bush, and the second threaded portion engages a corresponding second threaded portion of the main body, and to an electromagnetic valve having a corresponding device, in particular for use in a fuel injector.

Abstract: A device for closing a gas inlet in a valve device for a pressurized gas cylinder has a freedom of translation between an extreme gas inlet closing position and an open position at an extreme stop position or an intermediate position determined by the position of a component having translatory movement that can be adjusted by a handwheel.

Abstract: An apparatus for regulating fluid pressure comprising an inlet for accepting fluid at high pressure and an outlet for supplying fluid at a predetermined pressure to the device that requires fluid flow. A piston and seal form the valve used to regulate the fluid pressure at the outlet. Another aspect of the invention is a high-pressure chamber to that provides a reserve of fluid for continuous regulated pressure during periods of sustained use. The regulated pressure is adjustable using a sphere and ramp mechanism. One embodiment of the invention is adapted for use with a paintball marker.

Abstract: A handle assembly mountable on a valve is disclosed. The assembly includes a head having a receptacle engageable with a rotatable shaft on the valve and a grip projecting outwardly from the head to facilitate turning of the head for actuating the valve. An arcuate slot is positioned in the head, the slot having a curvature matched to the arcuate motion of the handle when used to turn the valve shaft. A limit post is attached to the valve and projects through the slot. A jam nut is mounted on the post adjacent to the head. When tightened against the head the jam nut fixes the position of the head relatively to the valve. A bolt is positioned within the slot and retained by a nut. The bolt is movable along the slot to a predetermined position where it can be temporarily fixed by tightening the nut. The bolt acts as a memory stop when it engages the limit post as the head is turned.

Abstract: In a proportional solenoid valve, a valve drive portion that includes a coil, a core that is excited by application of a current to the coil, a plunger that is displaced by a magnetic attraction force generated by the excited core, and a spring that biases the plunger in a direction in which a distance to the core is increased. The spring is set so that a space is maintained between the plunger and an attraction surface of the core when the spring is fully compressed.

Abstract: A valve includes a fluid inlet passage having a fluid inlet, a fluid outlet passage, an orifice between the fluid inlet passage and the fluid outlet, and a moveable valve plug adapted to move with respect to the orifice to vary the flow of fluid between the fluid inlet passage and the fluid outlet passage. A movable valve stem is attached to the valve plug and a travel limiting device is attached to the valve stem. The travel limiting device permits the valve to be placed in one of a plurality of desired flow configurations.

Abstract: A first piston and a second piston are accommodated in a piston chamber of a cylinder. The first piston is connected to a main valve member which opens and closes a main flow passage. The second piston is connected to a second rod having a stopper whose position can be adjusted. Pressure fluid is supplied to the second pressure chamber to move the second piston forward to a position where the stopper abuts against the abutting portion. In this state, pressure fluid is supplied to the first pressure chamber to move the first piston to a position where the first piston abuts against the second piston, thereby opening the main valve member by a stroke of the first piston.

Abstract: The tap intended for controlling the flow of a fluid, for example of a gas, comprises a tap body (34), an inner member (36) for opening and closing the passage of the gases, an outer rotary operating handwheel (42), a connector member (40) connecting the operating handwheel (42) to the closing member (36) and a stop mechanism limiting the movement of the operating handwheel (42) and of the opening and closing member (36) in the opening direction of the tap. In order to avoid the tap becoming jammed in the open position, the stop mechanism that limits the movement of the operating member comprises of an abutment (44) and a counterabutment (46) with frontal contact, which are arranged respectively on a rotary element and on the body (34) of the tap, or vice versa.

Abstract: In contrast to the conventional air brush, an air brush in the invention has a function in which even a beginner can easily perform an operation for pulling an operating rod little by little while the operating rod is slightly pushed and pulled at an initial stage of the drawing of a line requiring a technique and an experience. The operating rod arranged in an air brush main body forms a slanting face therein projected on the front face of this operating rod while the slanting face is inclined from below to above, and this slanting face abuts on the front side edge of a notch port of the air brush main body. An air valve is opened every small amount and a needle is simultaneously retreated every small amount in a range in which the slanting face of the operating rod and the front side edge of the notch port come in contact with each other and are slid at the initial stage of an operation for pushing and moving the operating rod.

Abstract: A rotational limit stop comprising a substantially circular disc having an upper surface, a lower surface and a perimeter surface, the perimeter surface containing a plurality of teeth on one portion thereof, a central aperture passing through the center of the circular disc, and a plurality of resilient spring legs extending downwards from the lower surface of the disc, such that the resilient spring legs of the rotational limit stop flex to accommodate the compression forces as a faucet assembly containing the rotational limit stop is being assembled.

Abstract: An adjustable stop apparatus for limiting movement of an element of a metering valve for setting a flow limit condition of the valve, the apparatus comprising a stop, a housing, a rotary adjuster device connected to the stop for adjustably positioning the stop relative to the housing, and a guide device operable to guide and secure the adjuster device relative to the housing into any one of a plurality of pre-set positions determined by the guide device.

Abstract: A valve which intended to control the flow of a fluid, for example a gas, comprises a valve body (50), an internal member for opening and shutting-off the passage of the gases, an operating handwheel (56) connected to the opening and shut-off member, and means limiting movement of the operating handwheel (56) and of the opening and shut-off member in the direction of opening of the valve. To avoid the valve jamming in the open position, said means limiting the movement of the operating member includes a stop (60) and of a mating stop (62), with frontal contact, arranged respectively on a rotary element and on the body of the valve (50) or vice versa. To ensure optimum contact between the stop (60) and the mating stop (62), the latter forms part of an element the angular position of which can be adjusted.

Abstract: A proportional flow control valve, for controlling fluid flow through a flexible tube, includes first and second jaws on opposing sides of the tube. An actuator drives one of such jaws for adjusting the separation distance therebetween. When the valve is open, the separation distance is small enough to partially deform the tube without significantly restricting fluid flow. When the valve is closed, the separation distance is just small enough to essentially block fluid flow. A control system controls the actuator to determine such separation distance. Such valve can be used within a level control system for controlling the thickness of a work material in a slurry form cast upon a moving belt. A fluid reservoir is disposed above the belt, and the control valve adds slurry to the reservoir. A lens disposed near the moving belt and above the reservoir is coupled by fiber optics to a remote sensor for detecting the height of the slurry.

Abstract: A hand drive for shut-off members is described, for example for membrane valves, the hand drive comprises a hand wheel for actuating the valve which is provided with a closure limiter and a valve lift limiter, the hand wheel is provided with two inserts mounted thereon for axial adjustability; and wherein the inserts interact with a threaded spindle coupled with a valve element so as to adjust the valve lift limiter and the closure limiter.

Abstract: A dual end stop is provided for setting precise open and closed positions for the valve to which the pneumatic actuator is attached. In a preferred embodiment, a stop assembly housing contains two stop adjustment bolts as well as a cam that defines first and second stop surfaces. The stop assembly housing is preferably mounted to the actuator housing outside of the pressurized zone contained by the actuator housing. The stop bolts and associated threaded apertures are designed for minimum overhang of the stop bolts to provide more support. The stop assembly housing not only preferably houses the stop assembly components but also preferably serves as an adaptor plate for the various valves to which the actuator may be mounted.

Abstract: In a solenoid valve for controlling a fuel injector of an internal combustion engine, which has an electromagnet (29), a movable armature having an armature plate (28) and an armature pin (27), and a control valve element (25), which is moved with the armature and works together with a valve seat (24), for opening and closing a fuel drain channel (17) of a control pressure chamber (14) of the fuel injector (1), this armature plate (28) being mounted on the armature pin (27) so it is movable by sliding under the effect of its inertial mass in the closing direction of the control valve element (25) against the tension of a return spring (35) acting on the armature plate (28), in order to be able to easily set the maximum slide path of the armature plate (28), an actuator is provided on the armature plate which is arranged on a section (42) of the armature plate (28) facing away from the electromagnet (29) and is adjustable in the sliding direction of the armature plate (28) relative to a face (41) of the armatu

Abstract: A dual end stop is provided for setting precise open and closed positions for the valve to which the pneumatic actuator is attached. In a preferred embodiment, a stop assembly housing contains two stop adjustment bolts as well as a cam that defines first and second stop surfaces. The stop assembly housing is preferably mounted to the actuator housing outside of the pressurized zone contained by the actuator housing. The stop bolts and associated threaded apertures are designed for minimum overhang of the stop bolts to provide more support. The stop assembly housing not only preferably houses the stop assembly components but also preferably serves as an adaptor plate for the various valves to which the actuator may be mounted.

Abstract: A dual end stop is provided for setting precise open and closed positions for the valve to which the pneumatic actuator is attached. In a preferred embodiment, a stop assembly housing contains two stop adjustment bolts as well as a cam that defines first and second stop surfaces. The stop assembly housing is preferably mounted to the actuator housing outside of the pressurized zone contained by the actuator housing. The stop bolts and associated threaded apertures are designed for minimum overhang of the stop bolts to provide more support. The stop assembly housing not only preferably houses the stop assembly components but also preferably serves as an adaptor plate for the various valves to which the actuator may be mounted. The stop bolts preferably have a convex head to provide a defined point contact rather than a random point contact as may be produced with flat heads.

Abstract: A dual end stop is provided for setting precise open and closed positions for the valve to which the pneumatic actuator is attached. In a preferred embodiment, a stop assembly housing contains two stop adjustment bolts as well as a cam that defines first and second stop surfaces. The stop assembly housing is preferably mounted to the actuator housing outside of the pressurized zone contained by the actuator housing. The stop bolts and associated threaded apertures are designed for minimum overhang of the stop bolts to provide more support. The stop assembly housing not only preferably houses the stop assembly components but also preferably serves as an adaptor plate for the various valves to which the actuator may be mounted.

Abstract: A dual end stop is provided for setting precise open and closed positions for the valve to which the pneumatic actuator is attached. In a preferred embodiment, a stop assembly housing contains two stop adjustment bolts as well as a cam that defines first and second stop surfaces. The stop assembly housing is preferably mounted to the actuator housing outside of the pressurized zone contained by the actuator housing. The stop bolts and associated threaded apertures are designed for minimum overhang of the stop bolts to provide more support. The stop assembly housing not only preferably houses the stop assembly components but also preferably serves as an adaptor plate for the various valves to which the actuator may be mounted.

Abstract: A dual end stop is provided for setting precise open and closed positions for the valve to which the pneumatic actuator is attached. In a preferred embodiment, a stop assembly housing contains two stop adjustment bolts as well as a cam that defines first and second stop surfaces. The stop assembly housing is preferably mounted to the actuator housing outside of the pressurized zone contained by the actuator housing. The stop bolts and associated threaded apertures are designed for minimum overhang of the stop bolts to provide more support. The stop assembly housing not only preferably houses the stop assembly components but also preferably serves as an adaptor plate for the various valves to which the actuator may be mounted.

Abstract: A modular, actuated valve controlled by means of pressure fluids comprising a head plate mounted on a housing plate mounted on a base plate, held together by screws, having a piston with attached valve spindle and a pressure relief space provided between the flow passage 28, 29 and the piston.