Abstract: A pinch valve for selectively pinching or releasing a multiple plurality of fluid conduits includes a rotatable single cam as part of a rotor within a stator for locating the fluid conduits. The cam periphery with different lobe surfaces for engaging movable means which is either a plunger or a endless belt which pinch or release multiple fluid conduits. The rotor integrally includes a gear, shaft and flag indicator and is operable by a stepper motor. A backing means about the stator resiliently resists movement.

Abstract: A solenoid valve is formed with a first pressure chamber defined to be above a valve seat with and from which a valve member engages and disengages and to communicate with a fluid supply side within a valve housing, and solenoid means mounted to the valve housing with a pilot valve interposed between them while defining a pilot chamber below the pilot valve and a second pressure chamber above the pilot valve, the pilot chamber communicating with the first pressure chamber and with a fluid discharge side of the valve member. The pilot valve actuated by the solenoid means for a relatively smaller displacement allows the main valve member to be actuated to open and close the valve, whereby the solenoid means and eventually the entire valve can be minimized in size, and any impurity contained in flowing fluid can be prevented from adhering to a movable member in the solenoid means for assuring a highly reliable operation of the valve for a long term.

Abstract: A breakaway hose coupling with an integrated swivel mechanism for releasably joining two fluid dispensing devices, and for selectively disengaging such dispensing devices in response to a disengaging force in excess of a preselected value being exerted on said coupling device. The coupling (10) comprises a first valve assembly (12) for being secured on a first dispensing device and for selectively terminating the flow of fluid from such dispensing device when the coupling (10) is uncoupled. The coupling (10) further comprises a second valve assembly (14) with an integrated swivel mechanism (80) for being secured on a second dispensing device and for selectively terminating the flow of fuel from the second dispensing device when the coupling (10) is uncoupled.

Abstract: A frangible element valve assembly including a housing having an inlet port and an outlet port connected by a fluid passage that extends through the housing; and an actuator selectively controlling fluid flow through the fluid passage being biased to a predetermined fluid flow control position by a spring member of the valve assembly. Frangible elements of the valve assembly oppose the spring member to temporarily prevent the actuator from assuming the predetermined fluid flow control position, and these elements include breakable members that are broken by an operator to allow the actuator to thereafter assume the predetermined fluid flow control position until selectively changed by the operator.

Abstract: A water-control stopper comprises a stopper body (30), an I-shaped valve (32), an actuator tube (52) and a nut (31). It is characterized in a simple structural framework which can be manufactured easily at a relatively low cost and may utilize either a rigid tube or a soft tube.

Abstract: A hose reel includes a reel member rotatably mounted on a horizontal portion of an upstanding tube. The upstanding tube extends vertically from the horizontal portion and thence diagonally, to a lower vertical portion aligned generally under the center of the reel member. The lower end of the upstanding tube is rotatably mounted to one end of a support arm so that the reel and upstanding tube member combination will rotate around a vertical axis. The support arm extends a distance permitting complete rotation of the reel and upstanding tube, and has a short depending arm which is slidably mounted within a tubular support. A flexible hose is inserted through the upstanding tube, and has a swivel valve connected to the lower end thereof and a second swivel valve connected to the upper end thereof, to supply fluid to a hose on the reel while permitting full rotation of the reel member as well as rotation of the upstanding tube on the support arm.

Abstract: A valve arrangement comprises a stationary tubular wall with a cover plate defining a housing and an opening in the wall. A second coaxial tubular wall or valve element acts as a closure element for closing the opening with seals acting through axial displacement relative to the stationary wall. This allows for a very compact construction with simultaneous good flow conditions. The valve arrangement can also be directly integrated into a pump housing whereby the use of available space is further improved. The low force expenditure for the closing operation as well as the possibility of continuously controlling the flow for the valve are further advantages.

Abstract: A valve includes a hollow body having both a valve seat, and a threaded portion having helical right-handed threads. A stem disposed within the body has a threaded portion at one end, with left-hand threads. The stem is moved within the body by turning a cap assembly which has both a left-hand threaded portion engaging the threaded portion of the stem, and a right-hand threaded portion engaging the threads on the valve body. Large stem displacements per turn are realized.

Abstract: A heat exchanger having a plurality of tubes extending between front and rear tubesheets, baffles arranged inside the shell along a longitudinal direction of the tubes and 2 types of weld structures on respective tubesheets. Each of the tubes has an outer diameter in the range of 25.4 to 50.8 mm and the front tubesheet has a thickness less then 50 mm. The 2 types of welds comprise:(a) a structure (Type A) in which the tubesheet is provided with a hole having an inner diameter substantially equal to that of the tube, a protruded peripheral portion formed around an outside opening of the hole and an inside stepped cutout into which the end of the tube is inserted and a weld formed; and(b) a structure (Type B) in which the tube sheet is provided with an inner tapered hole and an adjacent communicating linear small diameter hole, a tube having an end portion provided with an inside stepped cutout which is inserted into the small diameter hole, and a weld formed.

Abstract: An arrangement for discharging to the atmosphere a jet of fluid released by a pressure relief valve in a pressurized hot fluid circuit of an aircraft, wherein the pressure relief valve is placed near a wall of the aircraft, e.g. the wall of an engine pod, so that any jet of fluid released by the valve is directed towards the wall, and the wall is provided with an orifice at the place where the fluid jet would hit the wall, the orifice being closed by a consumable plug designed to melt, at least partly, as a result of the heat of the fluid jet so that the jet is able to discharge through at least a part of the orifice.

Abstract: A ball valve type fluid coupling having identical interconnectable parts characterized by low fluid spillage during disconnection. The rotatable ball valve is axially displaceable by cam structure along the flow passage as the valve is rotated between open and closed positons which prevents the valve from passing through the plane of the coupling connection end during valve operation and the valve exterior surface includes a flat coupling connection end sealing surface substantially coplanar to the coupling connection end when the valve is closed to reduce trapping fluid and spillage.

Abstract: A pinchcock comprises a housing, a tube section of elastically flexible material arranged in the housing, a pinching element displaceable in the housing in a direction extending transversely to the longitudinal axis of the tube section and engaging on the outer side of the tube section and an actuating member for displacing the pinching element. The housing is designed as a plastic molded part, in which a ball is displaceable, as pinching element, in the direction extending transversely to the longitudinal axis of the tube section. The actuating member comprises a cam engaging the ball, this cam being rotatable about an axis aligned at right angles to the longitudinal axis of the tube section and to the direction of displacement of the ball.

Abstract: A magnetic valve which is closed when current is absent includes an electromagnet driver having a U-shaped magnetizable yoke carrying a winding; a pivotally attached armature including a soft magnetic material; a permanent magnet disposed on the armature; and a pole plate disposed between the permanent magnet and a part of the yoke which carries the winding. The yoke part and the pole plate define a separating plane therebetween. The mangetic valve further has a valve cone disposed on the armature below the separating plane.

Abstract: A heat exchanging device includes two heat exchangers, each of the heat exchangers including a metal plate and a pipe attached to the plate for conducting a heat exchanging medium, the plate with the pipe being bent into a winding, and the heat exchangers being arranged with respective axes of winding aligned with each other and with any opposite faces of the heat exchangers positioned with a specified distance not to come in contact with each other.

Abstract: A dry-break pipe coupling includes a valve body and a quarter turn rotary valve such as a butterfly valve, plug valve, ball valve and the like, the valve body and the contained valve having been split transversely in a direction intersecting the Y--Y axis of rotation of the valve into two separate valve body and valve portions that are rotatable about an axis concentric with or closely proximate to the Y--Y axis of the body, the valve portions being separable one from the other when the valve is in a closed position, the respective valve body portions each providing rotational support for the valve portion associated with that valve body portion.

Abstract: A push-to-connect, pull-to-disconnect ball detent coupling has a socket, a plug, detent balls carried by the socket for holding the plug in coaxial coupled relation, and a collar with two interlocking sleeves forming a channel. The channel receives a spring biased plunger for moving the collar to actuate the detent balls. The collar is biased so that when the socket and plug are disconnected, the ball detents are not maintained in a fixed position. The plug enters the socket through an orifice in the plunger and engages the balls and the plunger to compress the plunger spring. On further insertion of the plug into the socket, the retaining balls move inwardly into an annular groove on the plug and release the collar. The compressed spring then causes the collar to snap so that a projecting shoulder on the inner sleeve of the collar holds the balls in place in the annular groove in the plug and the socket and plug are locked in coupling engagement.

Abstract: A diaphragm valve comprises a housing (1) provided with a supply and a discharge opening, and adapted to be inserted in a conduit. A sleeve-shaped elastic diaphragm (4) is accomodated in the housing (1), and extends between the openings. The diaphragm (4) is adapted to be loaded from the outside by a pressure fluid. In its unloaded condition, the diaphragm (4) is at a radial distance from a core body (5) located centrally therein, and the valve is open. In its fully loaded condition, a middle section (11) of the diaphragm (4) is pressed against the core body (5), and the valve is closed. The wall of the resilient diaphragm has means (10) for increasing its stiffness. These means (10) only extend from an end of the diaphragm (4) to a place near its middle section (11), thus simplifying manufacture of the diaphragm (4) and improving its sealing.

Abstract: An adjustable pressure check valve comprises a generally cylindrical body having a throughbore communicating with an inlet and an outlet at opposite ends thereof, an annular valve seat in the throughbore, a valve member having a sealing surface for engagement with the seat disposed in the bore for movement into and out of engagement with the seat, a compression spring disposed in the throughbore for biasing the valve member into engagement with the seat, and an adjusting member for adjusting the biasing force of the spring on the valve member.

Abstract: A security and safety latch system for fluid couplings particularly for fluid couplings utilizing rotatable valves wherein connection and disconnection of the coupling parts is by relative rotation of the parts and the valves are rotated between open and closed positions by exterior manually operated handles. The coupling parts and the valve handles are provided with interfering surfaces which prevent the parts from being relatively rotated and disconnected until both coupling valves are closed. Further, the valve handles are provided with security latches which permit the handles to be locked in the closed position, and prevent the valve handles from being locked in the valve open position.

Abstract: A unitarily constructed clamp for selectively occluding a resilient tube includes a curved platen formed with a pair of holes through which the tube is threaded to position and hold the tube against the concave surface of the platen. The platen has a first end and a second end. Additionally, an articulated pressure member having a hinged juncture is pivotally connected to both the first end and the second end of the platen to locate the juncture between the ends of the platen. With this configuration, the articulated pressure member is positioned for movement between an open configuration and a closed configuration. In the open configuration, the pressure member is distanced from the platen to leave the tube patent. In the closed configuration, the tube is squeezed between the platen and the pressure member to occlude the tube.