Abstract: Drip irrigation emitters having low activation pressures, desirable flow rates, and are configured to clog less than existing emitters are provided. The disclosed emitters include membrane cavities that are devoid of a channel and a land to help advance fluid through the cavity, to an outlet, and to an outside environment. Instead, the membrane cavities have various shapes and configurations that, in conjunction with a depressed membrane, help to drive fluid out of the membrane cavity and to an outside environment. The shapes of the membrane cavities include a sinusoidal configuration, a cylindrical shape configuration, and a flat bottom configuration. Various features of such emitters, and methods of using the same, are also provided.

Abstract: The present invention relates to an emitter that can properly exhibit a flow rate adjustment function even when produced by molding a resin material having low hardness. The emitter has an emitter body and a base part stored in the emitter body. The emitter body comprises a water intake part, a reduced-pressure flow path groove, a storage part, and a diaphragm part. The base part has a base, a communication hole, and a deformation prevention part that is disposed protruding from the reverse surface to the surface of the base which the diaphragm part deformed by the pressure of a drip irrigation liquid contacts, and when the diaphragm part contacts the base by the pressure of the drip irrigation liquid, contacts the tube to prevent the base from being deformed by the pressure of the drip irrigation liquid.

Abstract: Disclosed is an emitter comprising a plurality of holes 106, running along a first edge 102 and a second edge 104 of the emitter. The emitter 100 may further comprise of an echelon shaped teeth portion 114. The echelon shaped teeth portion may run parallel to the first edge 102 and the second edge 104. Further the echelon shaped teeth portion 114 at least partially extends between the first side 110 and the second side 112.

Abstract: A drip irrigation apparatus and system. The drip irrigation apparatus includes a flow channel body and an elastic body. The elastic body is mounted on the outer circumference of the flow channel body and fitted in a spontaneous state to the outer circumference of the flow channel body. The flow channel body includes an energy dissipation body. The first drainage channel is formed in the energy dissipation body, the first drainage channel is connected to both ends of the energy dissipation body. The first drainage channel is connected at both ends of the first drainage channel to the inner wall of the elastic body forming a radial drainage channel.

Abstract: Disclosed is a drip irrigation hose with an emitter, devoid of fluid storage, the emitter comprising, a plurality of holes, running along a first edge and a second edge of the emitter, wherein the plurality of holes enable filtration. An inlet support positioned at a first side of the emitter, wherein the inlet support has an inverted funnel shape, with a separating structure extending from at least one corner of the inverted funnel. A first inlet positioned parallel to the plurality of holes and located along the first edge. A second inlet positioned parallel to the plurality of holes and located along the second edge. Further an outlet support positioned at a second side of the emitter.

Abstract: Containers with one or more tray retention portions and a support stand are described. For example, a container can include: a substantially hollow body including a plurality of body walls extending vertically from a bottom portion; an extension portion rotatably coupled to an outward-facing surface of a body wall among the plurality of body walls, the extension portion configured to rotate to an active position in which the extension portion extends outwardly from the body wall; and a support stand having a proximal end coupled to the outward-facing surface of the body wall and a distal end, the support stand configured to move between at least a stowed position in which the support stand is positioned against or proximate to the outward-facing surface of the body wall and a support position in which the support stand extends outwardly from the body wall.

Abstract: A variable-flow-rate anti-clogging emitter includes an upper casing and a lower casing, where the upper casing and the lower casing are fixedly connected with each other; the upper casing has a flat top surface provided with a water outlet and a bottom surface provided with a truncated conical slot in communication with the water outlet; the lower casing includes a flow channel portion and a discharging portion, which are recessed in an upper surface of the lower casing; the flow channel portion has one end provided with multiple parallel feeding channels and an other end communicated with the discharging portion; one end of a lower surface of the lower casing is provided with an L-shaped platform; water inlets of the multiple feeding channels are arranged on a side wall of the L-shaped platform; and an elastomer flow channel is fixedly provided between the upper casing and the lower casing.

Abstract: A fluid distributor comprises a first conduit extending along a first elongated axis and a second conduit circumscribing the first conduit. A first area comprises a cross-sectional flow area of the first conduit taken perpendicular to the first elongated axis. The first conduit comprises a first plurality of orifices comprising a first combined cross-sectional area. The second conduit comprises a second plurality of orifices comprising a second combined cross-sectional area. A first ratio of the first area to the first combined cross-sectional area can be about 2 or more. A second ratio of the first combined cross-sectional area to the second combined cross-sectional area can be about 2 or more. An angle between a direction of an orifice axis of a first orifice of the first plurality of orifices and a direction of an orifice axis of a first orifice of the second plurality of orifices can be from about 45° to 180°.

Abstract: This emitter has an emitter body and a pedestal. The emitter body includes: a water intake part for introducing irrigation liquid; a pressure reducing flow passage groove which is for forming a pressure reducing flow passage which communicates with the water intake part and allows the irrigation liquid to flow out while reducing the pressure of the irrigation liquid; an accommodation part which communicates with the pressure reducing flow passage groove and into which the irrigation liquid flows while the pedestal is accommodated therein; and a flexible diaphragm part which approaches the pedestal upon receiving the pressure of the irrigation liquid inside a tube while the pedestal is accommodated in the accommodation part. The pedestal has through-holes for discharging the irrigation liquid that flowed into the accommodation part. The emitter body and the pedestal are connected through a hinge part.

Abstract: A drip emitter includes a frame, that can be made of plastic, and a membrane, that can be elastomeric; and both the frame and the membrane are formed by injection molding and are attached to each other.

Abstract: An irrigation drip emitter, and methods relating to same, are provided for delivering irrigation water from a supply tube to an emitter outlet at a reduced and relatively constant flow rate. The emitter having at least one movable member for compensating for fluctuations in supply line fluid pressure. In one form, the movable member includes a tapered baffle section movable between a first position wherein fluid is allowed to flow over the tapered baffle section and a second position wherein fluid is prevented from flowing over at least a portion of the tapered baffle section and the tapered baffle section effectively lengthening the extent of a pressure reduction passage. In another form, first and second movable members are provided for compensating for such pressure fluctuations. In another form, a plurality of inputs is provided which are movable between first and second positions to compensate for such pressure fluctuations.

Abstract: A tool for assembling components of a clutch pack coaxially about an axis includes a base, a first guide member, and a second guide member. The first guide member is coupled to the base and has a first guide face configured to matingly engage a toothed portion of an inner clutch plate of the clutch pack. A top portion of the first guide face is radially inward of a bottom portion of the first guide face. A second guide member is coupled to the base and spaced apart from the first guide member. The second guide member has a second guide face configured to matingly engage the toothed portion of the inner clutch plate of the clutch pack. A top portion of the second guide face is radially inward of a bottom portion of the second guide face.

Abstract: This emitter comprises: an emitter body having a groove, a recess and a through hole on the upper surface thereof; and a film joined to the upper surface. This drip irrigation tube comprises: a tube; a discharge opening that is a hole extending through a wall of the tube; and an emitter joined to an inner wall surface of the tube at a position of the inner wall surface corresponding to the discharge opening.

Abstract: An emitter forms a flow path that runs to a discharge part from a water collecting part for receiving an irrigation liquid in a tube. The flow path includes a flow rate control part which includes: an end surface including a concave inclined surface that faces a film for receiving the pressure of the liquid inside the tube; a hole that opens at the center of the flow volume control part and connects to the discharge part; and a groove crossing the inclined surface and running to the hole. When the film adheres to the inclined surface as a result of the pressure of the irrigation liquid inside the tube, the flow volume of the irrigation liquid inside the emitter is controlled so as to be a volume that can pass through the groove.

Abstract: A drip emitter sized for insertion into a liquid supply tube and positioned adjacent to a dripping aperture in the tube comprises an emitter body having a convex side configured to internally and adjacently fit the tube and an opposite flat side comprising a regulator, wherein the convex side comprises an outlet chamber configured to be fluidically connected to the dripping aperture; a membrane covering at least the regulator; a cover provided with a liquid intake having a filter, wherein the cover is configured to envelop the emitter body except of most of said convex side; and a locking mechanism connecting the flat side and an inner surface of the cover that is adjacent to the flat side so as to join the cover to the emitter body, wherein the membrane is retained therebetween.

Abstract: A pressure compensation member, an irrigation drip emitter, drip lines and methods relating to same, are provided for delivering irrigation water from a supply tube to an emitter outlet at a reduced and relatively constant flow rate. The pressure compensation member being suitable for use in conventional emitters or alternate emitters being provided having either a uniform elastomeric emitter body configuration or a poly-material emitter body utilizing an elastomeric pressure compensation member. Various methods are also disclosed herein relating to the pressure compensation member, emitters and/or drip line using such pressure compensating members and/or emitters.

Abstract: An emitter (120) adjusts the flow rate of a liquid for irrigation to be discharged from a discharge opening (112) of a tube (110) so that, according to pressure of the liquid for irrigation within the tube (110) received by a second membrane (153), the flow rate is made smaller as the pressure becomes greater in a prescribed range of pressure. The emitter (120) is constituted by mating a first member (130) having a bottom surface with a shape that follows along the inside wall surface of the tube (110) and a second member (150) that includes the second membrane (153) and is mated to the first member (130).

Abstract: An emitter includes a water intake part, a pressure-reducing flow path part, a first flow-rate adjusting part, a second flow-rate adjusting part, and a discharge part. The first flow-rate adjusting part includes a first valve seat, a first communication hole, a first diaphragm part, and a valve body. The valve body is disposed between the first diaphragm part and an opening of the first communication hole. The valve body moves toward the first communication hole as the first diaphragm part approaches the first valve seat. The shape of the valve body is such that, when the traveling distance of the valve body is less than or equal to a predetermined value, the gap decreases as the valve body moves and such that, when the traveling distance of the valve body exceeds the predetermined value, the gap increases as the valve body moves.

Abstract: An integrated, self supporting elevated gas delivery and light emitting system for crops. The system has a gas and light line that is made of an elongated, tubular body having a central, longitudinal lumen and a plurality of apertures extending from the lumen through the body. The lumen conveys a gas and the apertures emit gas from the lumen to the plant foliage. A plurality of light emitting diodes are fixedly coupled to an exterior surface of the tubular body. A conductor is fixedly coupled to the tubular body and conductively connected to the plurality of light emitting diodes.

Abstract: A discrete flat dripper of the non-pressure regulated type of drippers or of the pressure compensated—flow rate regulated type of drippers, suited for being integrally installed within a hose, that comprises a body component whose configuration is essentially rectangular, wherein on its one side that is suited to being affixed to an internal wall of the hose, formed with an exit pool that it is elongated in its dimensions and substantially extends along the entire length of the body component, and with a flow passage circumferentially surrounding a substantial part of the elongated exit pool, and an integral dripper line wherein there are integrated at least one of such discrete flat dripper.

Abstract: This emitter has an emitter body, a film, and a cover. A sealed space is formed between the cover and a portion of the film. A flow channel in the emitter include: a first through-hole that is opened in a first surface and a second surface of the emitter body; and a second through-hole that is disposed downstream of the first through-hole. The film is disposed so as to block first surface-side openings of the first through-hole and the second through-hole. The film becomes distorted toward the side of the sealed space due to deformation caused in the film when the temperature of the film exceeds a preset value and when the pressure of irrigation liquid circulating within the flow channel exceeds a preset value, thereby creating a gap between the emitter body and the film, through which the first through-hole and the second through-hole are enabled to be connected.

Abstract: This emitter (120) comprises: a first flow rate adjustment unit which adjusts the flow rate of an irrigation liquid according to the deformation of a first diaphragm (160); and a second flow rate adjustment unit which adjusts the amount of irrigation liquid ejected (discharged) from the emitter (120) according to the deformation of a second diaphragm (170). The first diaphragm (160) has a projection spaced apart by a space from a hole which is a flow path for the irrigation liquid. The projection has an inverted truncated cone shape and is formed so that the space widens as the projection goes into the hole.

Abstract: An irrigation system is provided for irrigating a field divided into irrigation zones. The irrigation zones are arranged in columns extending alongside each other. The system has irrigation strips and a control head at an upstream end of each irrigation strip. Each irrigation strip provides irrigation substances to a column of zones. All control heads are located alongside a boundary of the field outside of the irrigation zones.

Abstract: An emitter having a water intake part, a discharge part, a channel, and a pressure reduction channel. The pressure reduction channel includes a groove and a plurality of projections. The plurality of projections include first and second projections that are adjacent to one another in the groove depth direction. The first projections are positioned on one side in the depth direction of the groove, and when seen from a planar view, the tip ends thereof project from the inside surface of the groove so as to cross the center line of the groove. The second projections are positioned on the other side in the depth direction of the groove, and when seen from a planar view, the tip ends thereof project from the inside surface of the groove so as not to cross the center line of the groove.

Abstract: An emitter having a water intake part, a discharge part, a channel, and a pressure reduction channel. The pressure reduction channel includes a groove and a plurality of projections. The plurality of projections include first and second projections that are adjacent to one another in the groove depth direction. The first projections are positioned on one side in the depth direction of the groove, and when seen from a planar view, the tip ends thereof project from the inside surface of the groove so as to cross the center line of the groove. The second projections are positioned on the other side in the depth direction of the groove, and when seen from a planar view, the tip ends thereof project from the inside surface of the groove so as not to cross the center line of the groove.

Abstract: A drip irrigation emitter with an anticlogging attribute. In the case of multi season crops, the lifespan of the drip irrigation pipe and the installation as a whole must follow the life span of the crop itself. Commonly, drip irrigation installations sometime in their life span get clogged and are thus rendered unusable due to the clogging occurring in the drip irrigation emitters themselves. Despite the use of filtering systems for the irrigation water, objects/dirt of miniscule cross-sectional areas are carried with the water that cannot be filtered at the filtering systems, thus entering the drip irrigation pipe and reaching the labyrinths of the individual emitters. This issue is catastrophic for the cultivation as irrigation of the crop is not performed uniformly leading to lower yield and income loss and possibly leading to the total loss of the plantation and the unavoidable replacement of the drip irrigation pipes.

Abstract: A strip is provided for distributing water that is provided at an inner surface of a drip irrigation hose. The strip for distributing water having a repetitive labyrinth segment, wherein a plurality of profiles are provided at the base of the strip, the labyrinth segment comprises: a water input section; a regulating section arranged downstream from the water input section, wherein the regulating section is provided to regulate water flow rate of the strip in response to water pressure of a hose; a discharge section arranged downstream from the regulating section, wherein the discharge section is provided with deflection-resistant reinforcement means.

Abstract: An irrigation drip emitter, and methods relating to same, are provided for delivering irrigation water from a supply tube to an emitter outlet at a reduced and relatively constant flow rate. The emitter defining an inlet, outlet and flow passage extending between the inlet and outlet. In one form, the emitter includes a root growth inhibiting member disposed in the outlet of the emitter. In another form, the emitter includes stepped flippers for controlling fluid flow through the emitter. In yet another form, the emitter includes disconnected or freestanding outlet walls disposed in the outlet for preventing the outlet from collapsing under increased fluid line pressure without creating dead ends where grit can build-up. In other forms, the emitter defines one or more recess within which inserts may be disposed so the emitter and insert collectively define a fluid flow passage. Related methods are also disclosed herein.

Abstract: This emitter has an emitter body having at least a concavity and a through-hole, and also has a flexible film that is joined to one or more surfaces of the emitter body, and blocks at least part of the opening of the through-hole and the concavity. The emitter also has a flow reduction part for reducing the flow of an irrigation liquid according to the pressure of the irrigation liquid inside the tube. The flow reduction part includes the concavity, a diaphragm which constitutes part of the film, and a valve seat to which it is possible to tightly adhere the diaphragm. The diaphragm includes a ring-shaped thin section positioned so as to surround the diaphragm region to be tightly adhered to the valve seat. The thin section is formed so as to both recess from the tube interior and also project toward the concavity.

Abstract: This emitter (120) has a first valve seat part (174) provided around a hole (173) which forms a portion of a flow path between a reduced-pressure flow path and a discharge part. The first valve seat part (174) is formed by a three-step recessed circumferential surface, and is provided with one groove (175) which intersects said three-step recessed circumferential surface, and becomes shallower as said groove approaches the hole (173). As the external liquid pressure increases, a film (140) gradually bends towards the first valve seat part (174), and the open area of the groove (175) gradually decreases. The flow rate of an irrigation liquid is adjusted to an amount capable of passing through the opening of the groove (175).

Abstract: This emitter (120) has double ridges provided around a hole (173) which forms a portion of a flow path between a reduced-pressure flow path and a discharge part. A first ridge (174), which is the outermost ridge, is provided with four first grooves (177) which intersect said ridge. A second ridge (175) is provided with one second groove (178) which intersects said ridge. As the external liquid pressure increases, a film (140) sequentially adheres to the first ridge (174) and the second ridge (175). The flow rate of an irrigation liquid is adjusted to an amount capable of passing through the groove or grooves in the ridge to which the film (140) is adhered.

Abstract: A fluid supply line is provided to reduce the labor and cost required for dripline system installations by providing predetermined fitting locations where driplines can be attached. The supply line consists of a conduit having a side wall, a connector extending through the side wall of the conduit, the connector having a conduit connecting segment extending outside the conduit and an inlet segment extending into the conduit, and the inlet segment being connected to the side wall of the conduit.

Abstract: A drip irrigation emitter is provided extending between first and second longitudinal ends. The emitter has an outer side for attaching to a pipe that is laterally bound between first and second longitudinal edges. The outer side has a flow path and an exit pool, and at least a section of the flow path extends downstream along the first edge and at least a portion of the exit pool is formed between the section of the flow path and the second edge.

Abstract: A drip emitter includes a frame, that can be made of plastic, and a membrane, that can be elastomeric; and both the frame and the membrane are formed by injection molding and are attached to each other.

Abstract: A drip irrigation emitter may be provided with a coupler for bonding to an inner surface of a conduit. The emitter may include for example a button flow restrictor. The coupler may optionally provide an outlet zone on the conduit surface that is large enough for automated perforation. Bonding the emitter to the surface of the conduit may have a minimal effect on the dimensions and/or properties of the conduit. A button drip irrigation emitter may optionally include a two part labyrinth. The labyrinth may for example be confined between a cylindrical surface and a cover and/or wind between intermeshing baffles on the cover and/or the surface.

Abstract: An irrigation emitter and drip line, and methods relating to same, are provided for reducing the flow and pressure of fluid via an emitter or plurality of emitters defined by two concentric tubes. In one form, the first tube defines an emitter inlet and connected pressure-reducing flow channel and the second tube is extruded over the first tube to enclose the emitter inlet and flow channel and defines an outlet connected to an end of the flow channel opposite the inlet to create an emitter for converting fluid flowing at a high flow rate in the lumen and at the first end of the inlet to a fluid with a low flow rate at the outlet of the emitter. In another form, a drip line is provided having a plurality of such emitters. The emitters capable of being provided with pressure compensation structures to compensate or account for fluctuations in supply line fluid pressure and root growth inhibiting members. Various methods related to the emitter and drip line are also disclosed.

Abstract: Pressure-compensating emitter. The emitter includes an inlet connected to a source of pressurized water and an orifice in fluid communication with the inlet and extending into a channel including a raised land surrounding an outlet. A compliant membrane is positioned above the land in the chamber wherein pressurized water will cause the membrane to deform into contact with the land to alter flow through the outlet so as to provide a constant flow rate. Parameters of the emitter are selected so that the emitter has a large operating range and an activation pressure of 0.15 bar or below.

Abstract: Systems, methods, process, and article of manufacture regarding alignment orifice shields are provided. Shields can be configured to mate with leaching conduits in a certain configuration and can provide visual clues with regard to orientation as well as stability of installation for a pressurized or gravity-flow conduit. Methods of manufacture are also provided where manual or automated systems may be used for securing and adapting conduits to align with one or shields prior to or during installation of a leaching system.

Abstract: An emitter (120) forms a flow path that runs to a discharge part (250) from an intake part (220) for receiving an irrigation liquid in a tube. The flow path includes a flow volume control part (240) which includes: an end surface (243) including a concave inclined surface that faces a film (300) for receiving the pressure of the liquid inside the tube; a hole (244) that opens at the center of the flow volume control part (240) and connects to the discharge part (250); and a groove (245) crossing the inclined surface and running to the hole (244). When the film (300) adheres to the inclined surface as a result of the pressure of the irrigation liquid inside the tube, the flow volume of the irrigation liquid inside the emitter (120) is controlled so as to be a volume that can pass through the groove (245).

Abstract: This emitter (120) includes a channel which spans to a recessed section (252), from an intake path (221) for receiving an irrigation liquid inside a tube. The channel includes an aperture (243) which is closed by a lid (244) disposed so as to not be in contact with a film (300). A groove is formed at the periphery of the aperture (243). When the film (300) is pressed as a result of the pressure of the irrigation liquid inside the tube, and the lid (244) closes the aperture (243), the flow rate of the irrigation liquid inside the emitter (120) is controlled so as to be the amount capable of passing through the groove. This flow-rate control continues until the pressure difference in the channel between a side upstream with respect to the lid (244) and a side downstream with respect to the lid (244) has been sufficiently reduced.

Abstract: A drip irrigation emitter may be provided with a coupler for bonding to an inner surface of a conduit. The emitter may include for example a button flow restrictor. The coupler may optionally provide an outlet zone on the conduit surface that is large enough for automated perforation. Bonding the emitter to the surface of the conduit may have a minimal effect on the dimensions and/or properties of the conduit. A button drip irrigation emitter may optionally include a two part labyrinth. The labyrinth may for example be confined between a cylindrical surface and a cover and/or wind between intermeshing baffles on the cover and/or the surface. In some embodiments the device may be formed using molding elements moving along a single axis.

Abstract: A discrete flat dripper of the non-pressure regulated type of drippers or of the pressure compensated—flow rate regulated type of drippers, suited for being integrally installed within a hose, that comprises a body component whose configuration is essentially rectangular, wherein on its one side that is suited to being affixed to an internal wall of the hose, formed with an exit pool that it is elongated in its dimensions and substantially extends along the entire length of the body component, and with a flow passage circumferentially surrounding a substantial part of the elongated exit pool, and an integral dripper line wherein there are integrated at least one of such discrete flat dripper.

Abstract: A drip irrigation emitter (1), which comprises a low pressure stop filter (5), a pressure reduction channel (8), and a diaphragm (10), is disposed on the inner wall surface of a flow pipe (3) through which the irrigation liquid flows. The low pressure stop filter (5) has a hydrophobic surface and prevents inflow of the irrigation liquid when the fluid pressure is lower than an established value. The pressure reduction channel (8) reduces the pressure of the irrigation liquid. The diaphragm (10) changes the degree of opening of the pressure reduction channel (8) according to the fluid pressure of the irrigation liquid. The drip irrigation emitter (1) can be manufactured at low cost as a result of being a one-piece molding. The drip irrigation device comprising the drip irrigation emitter (1) stably ejects the irrigation liquid even when the liquid pressure is low.

Abstract: Fluid distribution system including conduit with openings, membrane for covering of openings, deflector for manipulating membrane, activator which is movable in the conduit with propulsion and control, the activator for communicating via deflector to manipulate membrane and uncover openings for fluid to be emitted from the conduit in relative vicinity.

Abstract: Embodiments disclosed herein describe systems and methods for a drip irrigation system with triangulated drip emitters configured to uniformly distribute wetting patterns. The drip irrigation system may be wrapped with a protective filter fabric for the length of the distribution line prolonging the life of the distribution lines and emitters by preventing soil and root intrusion and protecting the drip tubing from abrasions, cuts, or pinching. The drip irrigation system may be a unified device that is configured to be rolled, placed, positioned, etc. over a desired area, wherein the drip irrigation system may be coupled to a single water inlet and output water at a plurality of uniformly distributed drip emitters.

Abstract: An emitter (120) is arranged inside a tube and is constituted by a resin molded body that has at least a recessed part and a through hole. The emitter (120) has a screen part, an intake volume adjusting part, a pressure reducing part, a discharge volume adjusting part, and a discharge part. The screen part is constituted by a slit (301) and a recessed part that intersects the slit (301) when seen in plan view. The discharge part includes an infiltration preventing part that is for preventing the infiltration of foreign matter from the discharge opening of the tube.

Abstract: An emitter (120) includes a flow path from a water intake path (221), which is for taking in irrigation liquid within a tube, to a recessed part (251). This flow path includes a recessed surface part (242) closed, without contact, by a film (300). A channel (243) that forms a reduced pressure flow path included in the above flow path is formed on the surface of the recessed surface part (242). If the film (300) is pressed by the pressure of the irrigation liquid in the tube (110) and adheres to the recessed surface part (242), the flow rate of the irrigation liquid inside the emitter (120) is controlled to an amount that can pass through the channel (243).

Abstract: This drip-irrigation device has plate-shaped inflow parts, an emission-rate control part, and a first groove section. The long direction of each inflow part is parallel to the lengthwise direction of a circulation tube that has a bottom surface joined to the inside surface thereof and a top surface opposite said bottom surface. The inflow parts are laid out on said top surface and cause an irrigation liquid inside the circulation tube to flow into channels. The emission-rate control part controls the rate with which said irrigation liquid is emitted, via the channels, from emission holes. The first groove section is formed as a recess in the aforementioned top surface, from one lengthwise end thereof towards the other lengthwise end, and is shaped such that the width and depth thereof gradually decrease with decreasing distance from said other lengthwise end.

Abstract: An irrigation drip emitter, and methods relating to same, are provided for delivering irrigation water from a supply tube to an emitter outlet at a reduced and relatively constant flow rate. The emitter having at least one movable member for compensating for fluctuations in supply line fluid pressure. In one form the movable member includes a tapered baffle section movable between a first position wherein fluid is allowed to flow over the tapered baffle section and a second position wherein fluid is prevented from flowing over at least a portion of the tapered baffle section and the tapered baffle section effectively lengthening the extent of a pressure reduction passage. In another form, first and second movable members are provided for compensating for such pressure fluctuations. In another form, a plurality of inputs are provided which are movable between first and second positions to compensate for such pressure fluctuations.

Abstract: An irrigation emitter and drip line, and methods relating to same, are provided for reducing the flow and pressure of fluid via an emitter or plurality of emitters defined by two concentric tubes. In one form, the first tube defines an emitter inlet and connected pressure-reducing flow channel and the second tube is extruded over the first tube to enclose the emitter inlet and flow channel and defines an outlet connected to an end of the flow channel opposite the inlet to create an emitter for converting fluid flowing at a high flow rate in the lumen and at the first end of the inlet to a fluid with a low flow rate at the outlet of the emitter. In another form, a drip line is provided having a plurality of such emitters. Various other forms and methods relating to the emitter and drip line are also disclosed.