Abstract: A mechanical pipe squeezer includes: an elongated primary arm having a side surface extending between a first end and an opposing second end; a secondary arm having a side surface extending between a first end and an opposing second end, the first end of the secondary arm being pivotably coupled to the primary arm at a location between the first end and the second end of the primary arm; a threaded passage disposed at the first end of the primary arm; and a threaded shaft having a first end and an opposing second end and being threadedly received within the threaded passage, the second end of the threaded shaft being rotatably coupled to the secondary arm so that rotation of the threaded shaft causes the second end of the secondary arm to either pivot outward away from the primary arm or toward the primary arm, depending on the direction of rotation.

Abstract: A gas transfer system for transferring gas into an analytical instrument for isotope ratio analysis comprises a capillary for delivering sample and/or reference gas from a gas source, a first connector for connecting the capillary to the gas source, a second connector for connecting the capillary to the analytical instrument, a crimping device, wherein the internal surface of the capillary comprises a coating material to prevent or minimize adsorption of water to the surface. Also provided is a device for regulating gas flow in a gas inlet system of an analytical instrument, comprising a body member having an internal gas flow channel, and a clamping member for attachment to the body member such that when the clamping member is tightened onto the body member, the internal gas flow channel is adjustably and reversibly crimped, to adjust gas flow therethrough.

Abstract: A clamp for closing a flexible tube includes an anvil and a hammer. The anvil includes a passage and a slot defined therein. The passage is configured to receive a flexible tube therethrough. The hammer is slidably received within the slot of the anvil. The hammer is securable in a first position in which the passage of the anvil is substantially unoccluded and a second position in which the passage of the anvil is occluded. The hammer and the anvil are configured to prevent fluid from flowing through the flexible tube received in the passage when the hammer is in the closed position. The hammer is substantially within the anvil in the closed position.

Abstract: A valve assembly with a multidirectional flow path includes a valve body that includes respective hinged portions defining respective passageways extending through the valve body when in a closed state. A flexible conduit or tubing having a loop portion and a plurality of branches extending from the loop portion is at least partially positioned within the valve body. Portions of the loop that extend beyond the valve body are encapsulated by respective rigid jackets. Multiple valves are situated on the valve body and are used to selectively pinch the loop portion in different pinching configurations to direct fluid to or from the particular branches. The valve assembly may be integrated into a manufacturing or other production process with optional additional jackets used to encapsulate the flexible conduit branches.

Abstract: A catheter delivery device includes a hollow longitudinal body, a fluidic bypass, and a hemostasis valve. The hollow longitudinal body includes a clamping portion and a guide catheter. The guide catheter has a distal end for access into a vessel of a patient and a proximal end coupled to the clamping portion. The clamping portion has a distal end coupled to the guide catheter, a proximal end coupled to the hemostasis valve, and a guidewire securing section. When the guidewire securing section of the clamping portion is securing the guidewire, the fluidic bypass maintains fluid communication between the guide catheter and the hemostasis valve. In some cases, the guidewire securing section and the fluidic bypass are separated by material within the hollow longitudinal body. In some cases, the fluidic bypass is separate from the guidewire securing section outside of the hollow longitudinal body.

Abstract: A fluid source management system (100) comprising a structure (101) that supports one or more fluid sources (103), sensors (102) that determine the fluid state of the fluid sources (103), at least one common reservoir (108) for storing the fluid, tubing (104) connecting the fluid sources (103) to the common fluid reservoir (108) and a controller (105) that controls the opening and closing of the tubing (104) based upon the fluid state of the fluid sources (103).

Abstract: A wearable medical device comprising an annular housing configured to attach to a wrist of a patient. The wearable medical device having a first receptacle attached to the annular housing for receiving a first portion of a tube of an intravenous delivery system. The wearable medical device comprising a flow regulator attached to the annular housing and in contact with the first portion of the tube, where the flow regulator is configured to modify a geometric characteristic of the first portion of the tube. The wearable medical device further comprising a wireless transmitter for communicating with a user console.

Abstract: A system for managing flexible conduit or tubing used in pharmaceutical, bioprocess, or food/dairy applications includes a segment of flexible conduit or tubing and a plurality of conduit tracks, each conduit track including a conduit channel disposed on a first side thereof and extending along the length of each respective conduit track and dimensioned to receive the segment of flexible conduit or tubing therein, each conduit track further including a connector channel disposed on a second, opposing side and extending along the length of each respective conduit track and containing the one or more connectors that connect adjacent conduit tracks. The conduit tracks can be connected to each other or other process components.

Abstract: A pinch valve can include a finger guard or tubing retainer for blocking at least a portion of a tube slot. A headpiece for a pinch valve can include a tube slot for receiving tubing and can be adapted to couple with a guard. A guard can include a base and an extension and can be removably coupled to a headpiece. The extension can be adapted to block at least a portion of a tube slot.

Abstract: A system for managing flexible conduit or tubing used in pharmaceutical, bioprocess, or food/dairy applications includes a segment of flexible conduit or tubing and a plurality of conduit tracks, each conduit track including a conduit channel disposed on a first side thereof and extending along the length of each respective conduit track and dimensioned to receive the segment of flexible conduit or tubing therein, each conduit track further including a connector channel disposed on a second, opposing side and extending along the length of each respective conduit track and containing the one or more connectors that connect adjacent conduit tracks. The conduit tracks can be connected to each other or other process components.

Abstract: A fluid flow control valve includes a valve body with a fluid flow lumen therethrough and a valve member located within the fluid flow lumen. At least one of the valve body and valve member is resilient and respectively sized for movement between a normally closed position in which the valve member and a fluid lumen surface are in sufficient annular contact to block fluid flow through the fluid flow lumen and an open position in which at least one of the valve body and valve member flexes to a spaced apart position that allows fluid flow between them. Downstream fluid pressure may contact the valve body to enhance sealing. A fluid absorbent member may also be employed with the valve body. Flow control devices, such as medical fluid injection devices, and methods may employ this valve.

Abstract: A wearable infusion pump assembly including a reservoir for receiving an infusible fluid, and a fluid delivery system configured to deliver the infusible fluid from the reservoir to an external infusion set. The fluid delivery system includes a volume sensor assembly configured to receive a quantity of the infusible fluid from the reservoir. The volume sensor assembly includes an acoustically contiguous region having a volume that varies based upon the quantity of infusible fluid received from the reservoir, and an acoustic energy emitter configured to provide acoustic energy at a plurality of frequencies to excite a gas included within the acoustically contiguous region.

Abstract: A gypsum slurry modifier device is provided for use with a gypsum mixer outlet boot having at least one tubular outlet leg, and includes a support bracket mountable to the outlet boot; at least one clamp member associated with the support bracket and constructed and arranged for engaging the at least one tubular outlet leg of the outlet boot. Each at least one clamp member is constructed and arranged for exerting a vertical compression force on the associated at least one tubular outlet leg for expanding a slurry outlet flow from the at least one leg laterally beyond an exterior surface of the leg.

Abstract: An apparatus and method for crimping coupling rings are provided. The apparatus generally has a lower clamp head and an upper clamp head that may be drawn together by a fastener. The lower and upper clamp heads are designed to receive a first portion and a second portion of a coupling ring, respectively. A first and second post holds the clamp heads adjacent to each other. The upper clamp head is secured to the first post such that the upper clamp head may rotate in a generally circular motion to switch the apparatus from a closed to an open configuration, or vice versa. When the apparatus is placed in a closed configuration, the fastener may be engaged to draw the clamp heads together to increase the compressive force imposed on a coupling ring until the coupling ring becomes crimped.

Abstract: A pinch valve includes a clamping jaw (12) which displaces perpendicularly to an axial direction and forms a mouth (16) that receives a flexible tube (18) that extends in the axial direction, and an abutment (12; 21) which is opposite the clamping jaw in the jaw displacement direction. The clamping jaw and the abutment are disposed relative to one another such that the tube is pinched by the advancing clamping jaw against the abutment. The clamping jaw has a displaceable support element (14) and two claws (16a; 16b) located opposite one another and engaging around the tube at least in some regions. The claws are articulated on the support element by the respective rear ends thereof such as to pivot about pivot pins oriented parallel to the axial direction, whereby the mouth opens as the clamping jaw advances and closes as the clamping jaw retracts.

Abstract: A pneumatic pinch valve having a main body, a piston supporting a plunger, and a detachable headpiece for receiving a portion of compressible tubing between the plunger and a contoured surface of the headpiece is disclosed. A first safety cap which may restrict access to the plunger when the valve is operated and a manual override handle which may open the plunger are also provided. The pneumatic pinch valve is opened by the injection of gas through an air inlet port to a pneumatic chamber. The headpiece and plunger are configured to compress a portion of flexible tubing in a manner which reduces or eliminates damage to the tubing even after repeated open/close cycles. Further, the pinch valve may be installed onto an existing process system without disruption of fluid flow. Also disclosed is a manual version of the pinch valve.

Abstract: A microfluidic valve assembly includes a structure defining a microfluidic fluid path and an actuator that can be moved between different positions controlling flow through the channel. In one embodiment, the actuator can be threaded into at least a portion of the structure, and can be moved rotationally between a first position, causing relatively greater constriction of a microfluidic fluid path, and a second position causing relatively lesser constriction of the fluid path. Actuating the actuator, e.g., by rotation, can deform material between the valve and the fluid path, thereby constricting at least a portion of the underlying fluid path and regulating the flow of a fluid in the fluid path. In another aspect, the invention provides a reservoir into which fluid can be placed and from which fluid can be introduced into a microfluidic system. In one embodiment, the reservoir is expandable and thereby able to store fluid under pressure for delivery to a microfluidic system.

Abstract: The present disclosure relates to a pinch valve having upper and lower casings respectively supporting upper and lower pinch elements. The upper and lower casings are adapted for receiving a sleeve. A synchronization mechanism drives movements of the upper and lower pinch elements for pinching the sleeve. The upper and lower casings are connected by a pivot allowing pivoting of one or the other of the upper and lower casings for opening of the pinch valve, and for ease of access to the sleeve for maintenance purposes.

Abstract: A device for controlling the rate of flow of a liquid in a flexible tube comprising two opposed surfaces between which the tube is received in use wherein the surfaces are elongated in the direction of flow of the liquid in the tube and are either parallel to one another or arranged so that in use the included angle does not exceed 40°, and means for varying the distance between the surfaces so as to compress the tube between them by the desired amount.

Abstract: The present invention provides a tube clamping and closing device which includes a main body having a first end and a second end, and a retaining assembly having several kinds of work portions and disposed at the second end of the main body. The first end has a first clamping member extending laterally and having a threaded hole extending vertically. A blocking member is threadedly connected to the threaded hole and adapted for closing an opening of a tube. The work portions alternatively define a clamping space with the first clamping member and the main body. Whereby a single device of the present invention can be used for different kinds of tubes or multiport valves. The present invention has advantages of operating conveniently, carrying and putting away easily, saving space and costs, etc.

Abstract: A flow controller controls flow through a deformable conduit by compressing the conduit. The conduit may be compressed along a section of its length. The controller may include a cam driven by an actuator, the cam driving a clamp to compress the conduit. The actuator may be a dial. The cam may be shaped such that the flow rate varies linearly with rotation of the dial. The controller may include a clicker to allow the controller to be set in a number of different positions, allowing ease of adjustment and preventing drift or accidental adjustment of the flow rate.

Abstract: Mechanical actuation of valves in flexible fluidic structures allows for the regulation of fluid flow. In accordance with the disclosure herein, a fluidic structure is provided wherein mechanical actuation is conferred using a pin to actuate a flexible layer to occlude fluid flow in a fluid channel.

Abstract: A radial artery compression device configured to be secured to a wrist or other portion of a patient to provide adjustable and consistent compression pressure in the area of a radial artery access site or other physiological portion of a patient to achieve hemostasis either during or after a medical procedure such as a percutaneous coronary procedure. The radial artery compression device includes a rotatable member and a compression pad adapted such that rotation of the rotatable member does not affect the rotational orientation of the compression pad. According to one embodiment of the present invention, a single rotation of the rotatable member results in complete extension or retraction of the radial artery compression device. According to another embodiment of the present invention, the rotation of the rotatable member results in a compounding of the extension or retraction of the compression pad relative to the body of the radial artery compression device.

Abstract: A tube constriction valve has a valve body (1) with an approximation sensor (3) and a clamping bolt (2) that squeezes the tube inside the valve body (1). The approximation sensor (3) detects the position of the tube constriction valve and can indicate corresponding data by an approximation element (4) on the clamping bolt (2). The tube constriction valve allows for automatic and also manual operation and at the same time contains a position indicator. Consequently, damage to the tube is prevented and processing reliability preserved.

Abstract: A flow control valve assembly with low noise is provided. The flow control valve assembly uses silicone to define a flow passage to reduce the friction with respect to a fluid flowing therethrough while preventing the occurrence of turbulent flow of the fluid, thereby minimizing the generation of noise. The flow control valve assembly comprises a pipe having a through hole therein and formed with a plunger guide on a lateral surface thereof, a plunger installed within the plunger guide of the pipe to move upwardly and downwardly along the plunger guide, a silicone wall installed on the inner surface of the pipe to define a flow passage in the middle thereof, a clamping joint installed at the inlet of the pipe to clamp the silicone wall to the pipe, and a stopping joint installed at the outlet of the pipe to prevent the silicone wall from being thrust out of the pipe.

Abstract: A valve for restricting and closing plastic tubing, comprising a base having a surface for holding a plastics tube, two side guides extending from the base, a top provided with a restriction member and means for raising and lowering the restriction member on to a seat. One of the side guides is pivotally connected to the base and connectable to the top. The top having a bifurcation to accept the guide, a seat being provided on the bifurcation to hold a head on the side guide. The valve can be placed round a plastics tube and the restriction member positioned to set the flow through the tube. To remove the valve from the tubing, depression of the top releases the head of the side guide from its seat opening the valve.

Abstract: A fine flow pinch adjust has a T shaped fluid communication path. A flexible tube is inserted within the fluid communication path in other than a straight path. A screw is inserted in one branch of the T unoccupied by the flexible tubing such that the screw cooperatively engages threads on the opening wall and such that the screw can engage the tubing when turned sufficiently in a known direction.

Abstract: A device for temporarily closing a flexible pipe against the flow of fluid through the pipe includes upper and lower jaw members pivotally connected at their first ends to receive and compress the pipe between the jaw members, with pipe engaging surfaces of the jaw members separated from each other to prevent excessive compression of the pipe. An elongate threaded rod is pivotally connected to the second end of the lower jaw member, to extend between bearing plates connected to and extending outwardly from the second end of the upper jaw member. A nut assembly is threaded onto the threaded rod to be received and tightened against the bearing plates to safely compress the pipe between the jaw members without damaging the pipe wall.

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: An apparatus for regulating a flow of fluid in a tube. The apparatus comprises a housing comprising a passage configured to at least partially receive the tube, an adjustment mechanism rotatably coupled to the housing and selectively configurable between a first position and a second position, and a stopper at least partially provided in the housing and coupled to the adjustment mechanism. The stopper is configured to engage the tube when the adjustment mechanism is rotated from the first position to the second position thereby constricting the tube.

Abstract: A device for controllably restricting flow through a resilient tube including a block and a pair of generally J-shaped leg members pivotally mounted to the block. The leg members, when pivoted together, together provide a tube support surface. The block is formed with a bore in which there is a rotatable internally threaded sleeve. A jaw member having a threaded shaft is threadedly mated to the sleeve and a knob is fixedly secured to the sleeve for rotation therewith. Accordingly, rotation of the knob moves the jaw member toward and away from the tube support surface to provide desired compression to a length of resilient tubing captured between the jaw and the tube support surface. By pivoting the leg members away from each other, space is provided for installation of the flow restriction device at any desired point along the length of the tubing.

Abstract: A flow-regulating device is provided for external placement along a garden hose to control the water flow therethrough. The flow-regulating device comprises an open-ended hollow housing for receiving the hose. A compression member for compressing the hose against the housing. An actuator mounted on the housing for moving the compression member toward and away from the hose thereby controlling the compression of the hose to vary the flow of fluid through the hose. The hollow housing may also have a longitudinal slot therein for inserting the hose.

Abstract: A portable flow control valve for allowing a user to control fluid flow from a conduit from anywhere along the hose. The portable flow control valve includes a frame assembly being designed for being selectively positioned around the conduit. A clamping member is coupled to the frame assembly whereby the clamping member is slidably positionable with respect to the frame assembly. The clamping member is designed for engaging the conduit whereby the clamping member is for compressing the conduit between the frame assembly and the clamping member for controlling the rate of flow of the fluid through the conduit beyond the clamping member.

Abstract: A flow resistance setting nozzle capable of easily setting a target flow rate is provided. A metallic block has a through-bore through which a flow path forming metallic pipe is inserted. A pressing member in the form of a rectangular cross-section bar abuts the pipe at a first abut portion. An anvil having a distal end with an arcuate surface is mounted to the metallic block such that the distal end abuts the pipe at a second abut portion that is opposite to the first abut portion. A coarse adjustment screw presses a center portion of the pressing member against the pipe to squeeze the pipe between the pressing member and the anvil to form an orifice in the pipe. Two fine adjustment screws impart a force to the pressing member to further squeeze the pipe until the target flow rate is set.

Abstract: An apparatus for regulating a flow of fluid in a tube. The apparatus comprises a housing comprising a passage configured to at least partially receive the tube, an adjustment mechanism rotatably coupled to the housing and selectively configurable between a first position and a second position, and a stopper at least partially provided in the housing and coupled to the adjustment mechanism. The stopper is configured to engage the tube when the adjustment mechanism is rotated from the first position to the second position thereby constricting the tube.

Abstract: A flow-regulating device is provided for external placement along a garden hose to control the water flow therethrough. The flow-regulating device comprises an open-ended hollow housing for receiving the hose. A compression member for compressing the hose against the housing. An actuator mounted on the housing-for moving the compression member toward and away from the hose thereby controlling the compression of the hose to vary the flow of fluid through the hose. The hollow housing may also have a longitudinal slot therein for inserting the hose.

Abstract: A pinch valve for connection between an upstream pipeline and a downstream pipeline, the pinch valve including a body having a fixed upper pinch bar and a moveable lower pinch bar, an elastomeric sleeve, wherein the elastomeric sleeve is situated between the fixed upper pinch bar and the moveable lower pinch bar, and means to raise and lower the moveable lower pinch bar. A method of regulating fluid flow is also disclosed.

Abstract: A catheter movement control device is presented having therein a resilient biasing member and a tube gripper which mount on a catheter tube. The biasing member and tube gripper are contained within a housing having a shoulder proximate the catheter tube. As the catheter tube is free to move in a forward direction through the housing, upon attempted rearward movement the biasing member engages the tube gripper causing it to pivot against a shoulder within the housing. Upon pivoting the tube gripper tightly engages the catheter tube preventing any further rearward movement of the catheter tube.

Abstract: A tubing pinch valve and mounting bracket assembly is disclosed, the valve having a cylindrical valve body, and the bracket having a flexible base with two upstanding jaws. The valve body and each jaw have releasably engagable retention members, such that upon flexing of the base, the retention members may be disengaged to permit assembly or disassembly from the valve to the bracket.

Abstract: A plant feeder includes a reservoir container, a stand supporting the container, a fluid feed line, and a flow control valve. The reservoir container provides a source of fluid nourishment for feeding plants, and includes an outlet for dispensing the fluid nourishment, and an inlet which provides aeration. The stand supports the reservoir container through a releasable securing mechanism, such as a lattice harness. The stand includes mutually adjustable vertical supports, a stand foot, and a reservoir support. The feed line is attached on one end to the outlet of the reservoir container. The flow control valve is disposed in the feed line to provide controlled meter dosing of fluid nourishment from the container, and may be adjustably attached through a casing and lateral supports to the stand. A control valve with a flexible valve line and an impinging annular ring adjusted through a radial pin structure is described.

Abstract: A self-contained attachment unit which is to be connected between the mouth of a baby nurser and a nipple, including a liquid flow path having a variable internal diameter, and an adjuster for varying the internal diameter, a track path following the liquid flow path to guide the adjuster along the liquid flow path for controlling the size of the internal diameter from its maximum to closure to vary liquid flow from the baby nurser to the nipple from a maximum to complete shut off of flow.

Abstract: A control system is disclosed for use on flexible fluid carrying hoses, such as a fire hose, which now employ clamping means to temporarily interrupt fluid flow during hose operation. Frictional engagement means are provided for use with the hose clamp means to limit clamp movement when both opened and closed. A method of operating such hose clamp assembly is also disclosed.

Abstract: An apparatus and method for dividing a mass of dough into a plurality of smaller volumes for buns and the like of uniform weight which includes a manifold having internal dividers and monolithic conduits for dividing the dough into a plurality of streams. The manifold has a large volume to surface area and divides the dough under relatively low pressure of preferably 40 to 45 pounds per square inch gauge pressure. The apparatus also utilizes restrictors to fine tune the flow rates of the separate streams. The restrictors are flexible tube conduits that pass through a valve assembly having adjustable pressure bars that pinch the flexible tubes to vary their opening.

Abstract: The present invention is an apparatus for restricting the flow of fluid. The apparatus defines a tubular member having a channel. The tubular member has a first portion in which the channel has a first cross sectional area. There is also a second portion for restricting the flow of fluid defined by a reproducible deformity in the channel such that the channel has a second cross sectional area which is smaller than the first cross sectional area of the first portion. The tubular member further defines a third portion having a third cross sectional area which is greater than the second cross sectional area of the second portion. All of the cross sectional dimensions of the second and third portions are disposed within a cylindrical envelope having a diameter equal to the diameter of the first portion and extending therefrom. The tubular member is comprised of a material having sufficient rigidity to maintain a preferred reproducible permanent deformity in the channel.

Abstract: An improved glow-plug engine for use with a model airplane of the type that includes an output shaft for driving a propeller, a needle valve for controlling a flow of fuel into a carburetor, and a fuel line formed from resilient silicone rubber is provided, wherein the improvement comprises a pinch valve for controlling the flow of fuel through the fuel line which is located farther away from the propeller than the needle valve so that the fuel flow may be adjusted by the fingers of the engine's operator more safely. The pinch valve includes a valve body for securing a section of the resilient fuel line, and a pinching mechanism including a control member that is accurately extendible toward and retractable from a secured section of the fuel line to constrict or expand the fuel flow path defined by the secured section of the fuel line. In one embodiment, control member is a cam mounted on a lever which in turn is linked to a servo-mechanism.

Abstract: A pinch valve is provided for controlling the flow in a flexible wall tube. The valve includes a slotted saddle with female threading to receive a male threaded stem which is actuated within the saddle by a knob integrally connected to the stem. The slotted saddle may be installed onto an existing tube run without requiring disconnection. The stem has a spherical tip which contacts the tube to collapse to decrease the area flow therethrough. The knob and saddle are closely fitted to prevent spreading of the saddle during high thread loads. Calibration is also provided so that a desired flow control can be repeated with accuracy.

Abstract: This invention relates to a novel counter flow tube-manifold heat exchanger which can be installed in a wood or concrete floor and used to heat the floor and the earth space associated with the floor. A heat exchanger for conveying a heat containing fluid material in counter flow pattern comprising a hollow conduit comprised of three hollow elongated resillient fluid conducting tubes which are disposed parallel to and are joined to one another; and a first hollow elongated manifold with ports therein; and a second hollow elongated manifold, with ports therein adapted for connection with the ends of the tubes, the first ends of two of the three tubes being connected to the ports of the first manifold and the opposite ends of the same two tubes being connected to ports of the second manifolds, and the first end of the third tube adjacent the first ends of the two tubes being connected to a port of the second manifold, while the opposite end of the third tube is connected to a port of the first manifold.

Abstract: A fluid flow restrictor comprising a restrictor valve and a flexible tube housed in the valve, and an internally located outwardly biasing spring positioned in the tube such that the tube is biased against the action of the valve, the assembly being adapted to reduce the diameter of the tube with minimal permanent deformation of the tube.

Abstract: A micro-leakage regulating valve, in which a metal block has a through hole and a tapped hole extending from one side of the metal block and communicating with the through hole at the center thereof. The through hole has inserted therethrough a capillary metal tube. At one end of the through hole a sealing member provides a seal between the outer peripheral surface of the capillary metal tube and a surrounding wall surface of the metal block. An adjusting screw is screwed into the tapped hole, to crush the capillary metal tube to a desired degree, setting a desired flow rate.

Abstract: A fire hose clamp that comprises a U-shaped guide structure for slidably supporting a movable jaw; a manual rotary screw extends from the movable jaw through a nut in the central wall of the U-shaped structure, whereby rotation of the screw moves the jaw along the guide structure. A stationary jaw is arranged in the path of the movable jaw, such that the two jaws exert a squeezing action on a fire hose extending through the jaw space; the hose fabric is flattened to shut off the flow of water through the hose. Preferably the jaws have curved surfaces that tend to iron away any creases or bulges in the hose fabric during the hose-squeezing operation, thereby assuring a more consistent water shut-off action.