US3880401A - Flow metering and shut-off valve - Google Patents

Flow metering and shut-off valve Download PDF

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US3880401A
US3880401A US402152A US40215273A US3880401A US 3880401 A US3880401 A US 3880401A US 402152 A US402152 A US 402152A US 40215273 A US40215273 A US 40215273A US 3880401 A US3880401 A US 3880401A
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valve
metering
plug
sleeve
bore
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Harold L Wiltse
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16877—Adjusting flow; Devices for setting a flow rate
    • A61M5/16881—Regulating valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/54—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S251/00—Valves and valve actuation
    • Y10S251/903—Needle valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8158—With indicator, register, recorder, alarm or inspection means
    • Y10T137/8225—Position or extent of motion indicator
    • Y10T137/8275—Indicator element rigidly carried by the movable element whose position is indicated

Definitions

  • ABSTRACT A combined flow metering and shut-off valve having inner and outer valve parts which are axially movable relative to one another to effect relative axial movement of a metering valve plug on one part into and from a metering bore in the other part for regulating and blocking flow through the valve flow passage.
  • the describing valve is an intravenous flow control valve in which the outer valve part is a plastic barrel containing the metering bore and the inner valve part is a plastic sleeve which carries the valve plug and is threaded to the barrel for relative axial movement of the barrel and sleeve by relative rotation of the same.
  • This invention relates generally to flow control valves and more particularly to a combined flow metering and shut-off valve.
  • the flow control valve of the invention may be used for a variety of flow controlling purposes. However, the valve is intended primarily for use as an intravenous flow control valve and will be described in this connection.
  • a typical intravenous feeding system comprises a stand for supporting a container filled with an intravenous solution, a tube extending from the container and fitted at its end with a needle for insertion into the patients body, and a valve in the tube for regulating the rate of flow of the solution to the patient.
  • Valves for this purpose must regulate the solution flow with great precision, must be capable of effective sterilization, and must be sealed against the entrance of foreign matter into the solution.
  • This invention provides a combined flow metering and shut-off valve which satisfies the above and other requirements of an intravenous flow control valve and hence is ideally suited to this purpose. As noted earlier. however, the valve may be used for other purposes.
  • the valve has inner and outer valve parts which are movable axially relative to one another and provide a flow passage including an axial flow metering bore in one part.
  • the other valve part includes a flow metering valve plug which is movable into and from the metering bore by relative axial movement of the valve parts to regulate or meter and to totally block flow through the passage.
  • the valve plug has a tapered portion providing a flow space between the plug and the wall of the metering bore. The taper of this portion is such that the effective cross-sectional flow area of the flow space increases as the plug retracts from the bore and decreases as the plug enters the bore. When fully inserted into the bore, the valve plug completely closes the bore to block flow through the valve flow passage.
  • the particular valve described is an intravenous flow control valve whose outer part is a tubular barrel containing the metering bore between the barrel ends and whose inner part is a sleeve closed at one end by a wall from which the valve plug projects.
  • Entering one end ofthe barrel is an axial opening which opens to one end of the metering bore and receives the closed or walled end of the valve sleeve.
  • the opposite or outer ends of the barrel and sleeve provide coupling ends through which the valve passage extends.
  • the barrel and sleeve have mating threads, such that relative rotation of the barrel and sleeve causes their relative axial movement to effect movement of the valve plug into and from the metering bore.
  • the valve plug is cylindrical and sized to fit closely in the metering bore. Entering the circumference of the plug is at least one tapered longitudinal groove or flow slot which opens through the tip of the plug. This flow slot provides a flow passage between the plug and the wall of the metering bore whose effective crosssectional area progressively increases as the plug retracts from the bore to increase flow through the valve and progressively decreases to reduce flow as the plug enters the bore.
  • the hose of the plug is sized to fit snugly in the metering bore to close the latter completely when the plug is fully seated in the bore.
  • the valve plug and the valve barrel may also have confronting valve seating faces which abut to block flow when the valve is closed by full insertion of the valve plug into the metering bore.
  • the intravenous valve barrel and sleeve are constructed of plastic and the valve is designed to be disposable.
  • the valve barrel and sleeve are sealed to another, preferably by a sealing bead about the sleeve, to prevent leakage and entrance of foreign matter into the valve passage.
  • FIG. 1 illustrates an intravenous feeding system embodying the present valve
  • FIG. 2 is an enlarged axial section through the valve when closed
  • FIG. 3 is a section taken on line 33 in FIG. 2;
  • FIG. 4 is a section similar to FIG. 2 with the valve open;
  • FIG. 5 is a section taken on line 5-5 in FIG. 4;
  • FIG. 6 is a fragmentary exploded perspective of the valve.
  • FIG. 1 illustrates a typical intravenous feeding system 1 for feeding a solution, such as a saline solution, to a patient.
  • the system includes a stand 10 from which hangs a container 12 filled with an intravenous solution.
  • the container hangs upside down with its mouth lowermost.
  • a cap 14 Secured to the lower mouth of the container is a cap 14 with a depending coupling nipple 16.
  • the present flow metering and shut-off valve 18 is secured to the nipple.
  • Extending from the lower end of the valve is a tube 20 whose lower end is secured to an intravenous needle (not shown) for feeding the intravenous solution to the patient.
  • Valve 18 is adjustable to regulate and cut off the solution flow.
  • valve 18 has inner and outer valve parts 22, 24 which are axially adjustable relative to one another and provide a flow passage 26 through the valve.
  • One valve part in this instance, the outer part 24 has an axial flow metering bore 28 which forms a portion of the valve passage 26.
  • the other or inner valve part 22 has a flow metering valve plug 30 which enters the bore 28 and is movable into and from the bore by relative axial movement of the valve parts to regulate and block flow through the valve passage.
  • the valve plug has a tapered portion 32 which forms with the wall of the metering bore 28 a flow passage 34 whose effective cross-sectional flow area increases as the plug retracts from the bore and decreases as the plug enters the bore. The plug, when fully inserted into the bore, completely closes the bore.
  • the outer valve part 24 comprises a tubular valve barrel which contains the metering bore 28 between the barrel ends.
  • an axial opening 36 Entering the normally upper end of the barrel is an axial opening 36 whose lower end opens to the upper end of the metering bore 28.
  • the lower end of the barrel is reduced to form a coupling nipple 38 containing a passage 40 which opens to the lower end of the metering bore 28.
  • a coupling nipple 38 containing a passage 40 which opens to the lower end of the metering bore 28.
  • an internal annular wall surface 42 of the barrel is about the upper end of the barrel.
  • the inner valve part 22 comprises a sleeve having a normally lower end 44 which enters the upper barrel opening 36 and a normally upper coupling end 46 which is enlarged to approximately the same outside diameter as the upper end of the valve barrel 24. Extending axially through the sleeve is a passage 48, the upper end of which is slightly enlarged to receive with a friction fit the container cap nipple 16. Extending across the lower inner end of the valve sleeve 22 is an end wall 50 with ports 52 which communicate the sleeve passage 48 with the space 54 between the wall and the inner barrel surface 42.
  • the flow metering valve plug 30 is formedintegrally with and projects axially from the under side of the sleeve wall 50.
  • This plug has a lower cylindrical end 56 which fits closely but slidably within the metering bore 28 and an enlarged annular shoulder 58 at the base of the plug facing the inner barrel surface 42.
  • the tapered portion 32 of the plug comprises a tapered longitudinal groove or flow slot which enters the circumference and opens through the lower tip end of the plug. This slot is tapered to increase in depth toward the tip of the plug.
  • the upper end of the slot 32 terminates a distance from the valve plug shoulder 58 to provide between the slot and shoulder a smooth cylindrical portion 60 of the plug which is sized to fit snugly in and seal the metering bore 28.
  • the particular valve shown has two diametrically opposed tapered flow slots 32 in the valve plug 30.
  • valve sleeve 22 and barrel 24 have mating threads 62 for imparting relative axial movement to the sleeve and barrel when they are rotated relative to one another.
  • a seal 64 is provided between the sleeve and barrel to prevent fluid leakage from the valve passage 26 and entrance of foreign matter into the passage.
  • the valve sleeve and barrel are constructed of a relatively rigid though yieldable plastic material and the seal 64 comprises an integral sealing bead about the lower end of the valve sleeve 22.
  • Valve 18 is closed by rotating the valve sleeve 22 and barrel 24 relative to one another to fully insert the valve plug end 56 into the metering bore 28, as shown in FIG. 2.
  • the base portion 60 of the plug is located within and seals the bore, and the confronting barrel and plug surfaces 42, 58, which provide confronting valve seating surfaces. abut to form an additional flow blocking seal closing the valve passage 26.
  • the valve is opened by rotating the sleeve and barrel in the opposite direction relative to one another to retract the valve plug end 56 from the metering bore 28. This action elevates the upper ends of the-plug flow slots 33 above the barrel seating surface 42 to permit flow through the slots. It is evident that the effective cross-sectional flow area of the slots, and hence flow through the slots, increases as the valve plug is retracted from the metering bore and decreases as the plug enters the bore.
  • valve sleeve 22 and barrel 24 are externally knurled at 66 to facilitate relative rotation of these parts.
  • the valve may be provided with a scale 68 on one valve part and an index or reference 70 on the other part for indicating flow rate through the valve.
  • the valve 18 is installed in the intravenous feeding system of FIG. 1 by inserting the container cap nipple 16 into the upper end of the valve sleeve passage 48 and fitting the upper end of the tube 20 over the lower coupling end 38 of the valve barrel 24. The valve may then be adjusted by rotation of the barrel to open and close the valve as well as to regulate flow of solution by gravity from the container 12, through the valve, to the base 20.
  • valve has been described in connection with its use in an intravenous feeding system, it obviously may be used for other purposes.
  • a valve comprising outer and inner valve parts each comprising a one piece molded plastic part
  • said outer part comprising a tubular barrel having a relatively large diameter cylindrical portion at one end, a relatively small diameter nipple at the other end, and an axial flow metering bore between said ends opening at one end to the interior of said eylindrieal portion and at the other end to an axial passage through said nipple,
  • said inner part comprising a sleeve having an axial flow metering plug at one end slidably fitting in said metering bore, a cylindrical coupling portion at the other end, and an intermediate portion between said sleeve ends having an axially presented transverse wall about said plug, said cylindrical sleeve portion being threaded in said cylindrical barrel portion, whereby said metering plug is adjustable axially in said metering bore by relative rotation of said parts,
  • said sleeve having a central passage opening at one end through said opposite sleeve end and at the other end through ports in said transverse sleeve wall to the interior of said cylindrical barrel portion about said metering plug, and
  • said metering plug having at ieast one tapered axial flow passage opening laterally of said plug and endwise through the end of said plug, whereby axial adjustment of said metering plug regulates fluid flow through said metering bore.
  • said barrel has a valve seat about one end of said metering bore, and said sleeve has a valve face about the base of said metering plug engageable with said valve seat.

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  • Engineering & Computer Science (AREA)
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  • General Engineering & Computer Science (AREA)
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  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

A combined flow metering and shut-off valve having inner and outer valve parts which are axially movable relative to one another to effect relative axial movement of a metering valve plug on one part into and from a metering bore in the other part for regulating and blocking flow through the valve flow passage. The describing valve is an intravenous flow control valve in which the outer valve part is a plastic barrel containing the metering bore and the inner valve part is a plastic sleeve which carries the valve plug and is threaded to the barrel for relative axial movement of the barrel and sleeve by relative rotation of the same.

Description

ilnited States Patent [1 1 Wiltse 1 Apr. 29, 1975 1 1 FLOW METERING AND SHUT-OFF VALVE [76] Inventor: Harold L. Wiltse, 4322 Baldwin Park Ave., Baldwin Park, Calif. 91706 [22] Filed: Oct. 1,1973
21 Appl. No.: 402,152
[52] US. Cl 251/205; 128/214 R; 251/D1G. 4; 251/351; 137/556 [51] Int. Cl. F16r 47/00 [58] Field of Search 251/205, DIG. 4, 351; 128/214 R, 214 C, 214.2; 137/556 3,557,833 1/1971 Gilmont 251/205 X Primary I:'.\'aminer-Henry T. Klinksiek Attorney, Agent, or FirmBoniard 1. Brown [57] ABSTRACT A combined flow metering and shut-off valve having inner and outer valve parts which are axially movable relative to one another to effect relative axial movement of a metering valve plug on one part into and from a metering bore in the other part for regulating and blocking flow through the valve flow passage. The describing valve is an intravenous flow control valve in which the outer valve part is a plastic barrel containing the metering bore and the inner valve part is a plastic sleeve which carries the valve plug and is threaded to the barrel for relative axial movement of the barrel and sleeve by relative rotation of the same.
2 Claims, 6 Drawing Figures 1 61 References Cited UNITED STATES PATENTS 2,771,878 11/1956 Folland Ct a1 128/214 R 2,980,392 4/1961 Greenwood 251/205 X 3,072,147 1/1963 Allen St 211. 251/205 X 3,139,262 6/1964 Morris ct a1. 251/205 'W/ .fr
FLOW METERING AND SHUT-OFF VALVE BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates generally to flow control valves and more particularly to a combined flow metering and shut-off valve.
2. Prior Art As will appear from the later description, the flow control valve of the invention may be used for a variety of flow controlling purposes. However, the valve is intended primarily for use as an intravenous flow control valve and will be described in this connection.
Medical treatment of a patient often involves intravenous injection or feeding of various solutions into the patients body, a typical intravenous feeding system comprises a stand for supporting a container filled with an intravenous solution, a tube extending from the container and fitted at its end with a needle for insertion into the patients body, and a valve in the tube for regulating the rate of flow of the solution to the patient. Valves for this purpose must regulate the solution flow with great precision, must be capable of effective sterilization, and must be sealed against the entrance of foreign matter into the solution.
SUMMARY OF THE INVENTION This invention provides a combined flow metering and shut-off valve which satisfies the above and other requirements of an intravenous flow control valve and hence is ideally suited to this purpose. As noted earlier. however, the valve may be used for other purposes.
The valve has inner and outer valve parts which are movable axially relative to one another and provide a flow passage including an axial flow metering bore in one part. The other valve part includes a flow metering valve plug which is movable into and from the metering bore by relative axial movement of the valve parts to regulate or meter and to totally block flow through the passage. To this end, the valve plug has a tapered portion providing a flow space between the plug and the wall of the metering bore. The taper of this portion is such that the effective cross-sectional flow area of the flow space increases as the plug retracts from the bore and decreases as the plug enters the bore. When fully inserted into the bore, the valve plug completely closes the bore to block flow through the valve flow passage.
The particular valve described is an intravenous flow control valve whose outer part is a tubular barrel containing the metering bore between the barrel ends and whose inner part is a sleeve closed at one end by a wall from which the valve plug projects. Entering one end ofthe barrel is an axial opening which opens to one end of the metering bore and receives the closed or walled end of the valve sleeve. The opposite or outer ends of the barrel and sleeve provide coupling ends through which the valve passage extends. The barrel and sleeve have mating threads, such that relative rotation of the barrel and sleeve causes their relative axial movement to effect movement of the valve plug into and from the metering bore.
The valve plug is cylindrical and sized to fit closely in the metering bore. Entering the circumference of the plug is at least one tapered longitudinal groove or flow slot which opens through the tip of the plug. This flow slot provides a flow passage between the plug and the wall of the metering bore whose effective crosssectional area progressively increases as the plug retracts from the bore to increase flow through the valve and progressively decreases to reduce flow as the plug enters the bore. The hose of the plug is sized to fit snugly in the metering bore to close the latter completely when the plug is fully seated in the bore. The valve plug and the valve barrel may also have confronting valve seating faces which abut to block flow when the valve is closed by full insertion of the valve plug into the metering bore.
Preferably, the intravenous valve barrel and sleeve are constructed of plastic and the valve is designed to be disposable. The valve barrel and sleeve are sealed to another, preferably by a sealing bead about the sleeve, to prevent leakage and entrance of foreign matter into the valve passage.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates an intravenous feeding system embodying the present valve;
FIG. 2 is an enlarged axial section through the valve when closed;
FIG. 3 is a section taken on line 33 in FIG. 2;
FIG. 4 is a section similar to FIG. 2 with the valve open;
FIG. 5 is a section taken on line 5-5 in FIG. 4; and
FIG. 6 is a fragmentary exploded perspective of the valve.
DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 illustrates a typical intravenous feeding system 1 for feeding a solution, such as a saline solution, to a patient. The system includes a stand 10 from which hangs a container 12 filled with an intravenous solution. The container hangs upside down with its mouth lowermost. Secured to the lower mouth of the container is a cap 14 with a depending coupling nipple 16. The present flow metering and shut-off valve 18 is secured to the nipple. Extending from the lower end of the valve is a tube 20 whose lower end is secured to an intravenous needle (not shown) for feeding the intravenous solution to the patient. Valve 18 is adjustable to regulate and cut off the solution flow.
Turning to FIGS. 2-6, valve 18 has inner and outer valve parts 22, 24 which are axially adjustable relative to one another and provide a flow passage 26 through the valve. One valve part, in this instance, the outer part 24 has an axial flow metering bore 28 which forms a portion of the valve passage 26. The other or inner valve part 22 has a flow metering valve plug 30 which enters the bore 28 and is movable into and from the bore by relative axial movement of the valve parts to regulate and block flow through the valve passage. To this end, the valve plug has a tapered portion 32 which forms with the wall of the metering bore 28 a flow passage 34 whose effective cross-sectional flow area increases as the plug retracts from the bore and decreases as the plug enters the bore. The plug, when fully inserted into the bore, completely closes the bore.
Describing the valve 18 in greater detail, the outer valve part 24 comprises a tubular valve barrel which contains the metering bore 28 between the barrel ends.
Entering the normally upper end of the barrel is an axial opening 36 whose lower end opens to the upper end of the metering bore 28. The lower end of the barrel is reduced to form a coupling nipple 38 containing a passage 40 which opens to the lower end of the metering bore 28. About the upper end of the bore is an internal annular wall surface 42 of the barrel.
The inner valve part 22 comprises a sleeve having a normally lower end 44 which enters the upper barrel opening 36 and a normally upper coupling end 46 which is enlarged to approximately the same outside diameter as the upper end of the valve barrel 24. Extending axially through the sleeve is a passage 48, the upper end of which is slightly enlarged to receive with a friction fit the container cap nipple 16. Extending across the lower inner end of the valve sleeve 22 is an end wall 50 with ports 52 which communicate the sleeve passage 48 with the space 54 between the wall and the inner barrel surface 42.
The flow metering valve plug 30 is formedintegrally with and projects axially from the under side of the sleeve wall 50. This plug has a lower cylindrical end 56 which fits closely but slidably within the metering bore 28 and an enlarged annular shoulder 58 at the base of the plug facing the inner barrel surface 42. The tapered portion 32 of the plug comprises a tapered longitudinal groove or flow slot which enters the circumference and opens through the lower tip end of the plug. This slot is tapered to increase in depth toward the tip of the plug. The upper end of the slot 32 terminates a distance from the valve plug shoulder 58 to provide between the slot and shoulder a smooth cylindrical portion 60 of the plug which is sized to fit snugly in and seal the metering bore 28. The particular valve shown has two diametrically opposed tapered flow slots 32 in the valve plug 30.
The valve sleeve 22 and barrel 24 have mating threads 62 for imparting relative axial movement to the sleeve and barrel when they are rotated relative to one another. A seal 64 is provided between the sleeve and barrel to prevent fluid leakage from the valve passage 26 and entrance of foreign matter into the passage. In the particular valve shown, the valve sleeve and barrel are constructed of a relatively rigid though yieldable plastic material and the seal 64 comprises an integral sealing bead about the lower end of the valve sleeve 22.
Valve 18 is closed by rotating the valve sleeve 22 and barrel 24 relative to one another to fully insert the valve plug end 56 into the metering bore 28, as shown in FIG. 2. In this closed position, the base portion 60 of the plug is located within and seals the bore, and the confronting barrel and plug surfaces 42, 58, which provide confronting valve seating surfaces. abut to form an additional flow blocking seal closing the valve passage 26. The valve is opened by rotating the sleeve and barrel in the opposite direction relative to one another to retract the valve plug end 56 from the metering bore 28. This action elevates the upper ends of the-plug flow slots 33 above the barrel seating surface 42 to permit flow through the slots. It is evident that the effective cross-sectional flow area of the slots, and hence flow through the slots, increases as the valve plug is retracted from the metering bore and decreases as the plug enters the bore.
Preferably, the valve sleeve 22 and barrel 24 are externally knurled at 66 to facilitate relative rotation of these parts. Also, the valve may be provided with a scale 68 on one valve part and an index or reference 70 on the other part for indicating flow rate through the valve.
The valve 18 is installed in the intravenous feeding system of FIG. 1 by inserting the container cap nipple 16 into the upper end of the valve sleeve passage 48 and fitting the upper end of the tube 20 over the lower coupling end 38 of the valve barrel 24. The valve may then be adjusted by rotation of the barrel to open and close the valve as well as to regulate flow of solution by gravity from the container 12, through the valve, to the base 20.
While the valve has been described in connection with its use in an intravenous feeding system, it obviously may be used for other purposes.
The inventor claims:
1. A valve comprising outer and inner valve parts each comprising a one piece molded plastic part,
said outer part comprising a tubular barrel having a relatively large diameter cylindrical portion at one end, a relatively small diameter nipple at the other end, and an axial flow metering bore between said ends opening at one end to the interior of said eylindrieal portion and at the other end to an axial passage through said nipple,
said inner part comprising a sleeve having an axial flow metering plug at one end slidably fitting in said metering bore, a cylindrical coupling portion at the other end, and an intermediate portion between said sleeve ends having an axially presented transverse wall about said plug, said cylindrical sleeve portion being threaded in said cylindrical barrel portion, whereby said metering plug is adjustable axially in said metering bore by relative rotation of said parts,
said sleeve having a central passage opening at one end through said opposite sleeve end and at the other end through ports in said transverse sleeve wall to the interior of said cylindrical barrel portion about said metering plug, and
said metering plug having at ieast one tapered axial flow passage opening laterally of said plug and endwise through the end of said plug, whereby axial adjustment of said metering plug regulates fluid flow through said metering bore.
2. A valve according to claim 1 wherein:
said barrel has a valve seat about one end of said metering bore, and said sleeve has a valve face about the base of said metering plug engageable with said valve seat.

Claims (2)

1. A valve comprising outer and inner valve parts each comprising a one piece molded plastic part, said outer part comprising a tubular barrel having a relatively large diameter cylindrical portion at one end, a relatively small diameter nipple at the other end, and an axial flow metering bore between said ends opening at one end to the interior of said cylindrical portion and at the other end to an axial passage through said nipple, said inner part comprising a sleeve having an axial flow metering plug at one end slidably fitting in said metering bore, a cylindrical coupling portion at the other end, and an intermediate portion between said sleeve ends having an axially presented transverse wall about said plug, said cylindrical sleeve portion being threaded in said cylindrical barrel portion, whereby said metering plug is adjustable axially in said metering bore by relative rotation of said parts, said sleeve having a central passage opening at one end through said opposite sleeve end and at the other end through ports in said transverse sleeve wall to the interior of said cylindrical barrel portion about said metering plug, and said metering plug having at least one tapered axial flow passage opening laterally of said plug and endwise through the end of said plug, whereby axial adjustment of said metering plug regulates fluid flow through said metering bore.
2. A valve according to claim 1 wherein: said barrel has a valve seat about one end of said metering bore, and said sleeve has a valve face about the base of said metering plug engageable with said valve seat.
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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079737A (en) * 1975-01-14 1978-03-21 Med-Pak Corporation Control valve for infusion system
US4113149A (en) * 1977-03-25 1978-09-12 Gustav Harsch Portable water source
US4230300A (en) * 1979-06-11 1980-10-28 Mary Louise Wiltse Flow metering and shut-off valve
US4311137A (en) * 1980-04-30 1982-01-19 Sherwood Medical Industries Inc. Infusion device
DE3146541A1 (en) * 1980-11-24 1982-09-09 Master Medical Corp., 85018 Phoenix, Ariz. Metering device
WO1983000622A1 (en) * 1981-08-17 1983-03-03 Baxter Travenol Lab Antibacterial closure
US4414999A (en) * 1980-12-12 1983-11-15 Basta Michael I Continuous flushing device
US4468225A (en) * 1979-11-27 1984-08-28 Etablissement Sideco International Device for regulating the liquid flow in a pipe
US4601310A (en) * 1982-12-23 1986-07-22 Edwin Phillips Quick turn metering valve
US4703775A (en) * 1985-09-16 1987-11-03 Abbott Laboratories Liquid flow regulator
US4781698A (en) * 1987-04-09 1988-11-01 Parren Mark L Selectable drop size infusion metering device
GB2228305A (en) * 1989-02-01 1990-08-22 Nomix Mfg Co Ltd A valve
US5040770A (en) * 1988-12-14 1991-08-20 Vojko Rajster Device for transforming a laminar fluid flow into drops
DE3590339C2 (en) * 1984-07-13 1992-03-26 Master Medical Corp., Phoenix, Ariz., Us
US5234412A (en) * 1990-01-25 1993-08-10 Forberg Hans Juergen Flow regulator for a drip chamber
US5342025A (en) * 1993-12-31 1994-08-30 Hwang Shao Keh Magnetic control-type flow control valve
US5544855A (en) * 1993-09-15 1996-08-13 Wabco Vermogensverwaltungs Gmbh Valve
US6093182A (en) * 1998-05-11 2000-07-25 Merit Medical Systems, Inc. Wound irrigation shield adaptor
US20050258392A1 (en) * 2004-05-24 2005-11-24 Pliml Frank V Jr Oil drain valve
EP1623735A1 (en) * 2004-08-05 2006-02-08 Gemü GmbH Fluid flow controller
US20060184140A1 (en) * 2003-07-09 2006-08-17 Jms Co, Ltd Mixture injection port
US20110125103A1 (en) * 2009-11-25 2011-05-26 Baxter International Inc. Drip chamber with flow control
CN102961802A (en) * 2012-11-26 2013-03-13 宋金磊 Stepped speed regulating device of infusion apparatus
CN103691036A (en) * 2013-01-04 2014-04-02 胡生物医药株式会社 Instillator for injection of ringer's solution
EP3011986A1 (en) * 2014-10-20 2016-04-27 Becton Dickinson Holdings Pte. Ltd. Iv flow regulator
US20230009550A1 (en) * 2021-07-12 2023-01-12 Zhe Dai Water faucet and pool assembly with water faucet

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US2771878A (en) * 1952-08-27 1956-11-27 American Optical Corp Intravenous infusion system
US2980392A (en) * 1957-08-27 1961-04-18 Eugene C Greenwood Combination metering and shut-off valve
US3072147A (en) * 1961-09-29 1963-01-08 Westinghouse Air Brake Co Electro-pneumatic translator
US3139262A (en) * 1961-12-12 1964-06-30 Vactronic Lab Equipment Inc Precision metering valve
US3557833A (en) * 1968-04-16 1971-01-26 Roger Gilmont Instr Inc Micrometric capillary valve with tapered passage

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Publication number Priority date Publication date Assignee Title
US2771878A (en) * 1952-08-27 1956-11-27 American Optical Corp Intravenous infusion system
US2980392A (en) * 1957-08-27 1961-04-18 Eugene C Greenwood Combination metering and shut-off valve
US3072147A (en) * 1961-09-29 1963-01-08 Westinghouse Air Brake Co Electro-pneumatic translator
US3139262A (en) * 1961-12-12 1964-06-30 Vactronic Lab Equipment Inc Precision metering valve
US3557833A (en) * 1968-04-16 1971-01-26 Roger Gilmont Instr Inc Micrometric capillary valve with tapered passage

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079737A (en) * 1975-01-14 1978-03-21 Med-Pak Corporation Control valve for infusion system
US4113149A (en) * 1977-03-25 1978-09-12 Gustav Harsch Portable water source
US4230300A (en) * 1979-06-11 1980-10-28 Mary Louise Wiltse Flow metering and shut-off valve
US4468225A (en) * 1979-11-27 1984-08-28 Etablissement Sideco International Device for regulating the liquid flow in a pipe
US4311137A (en) * 1980-04-30 1982-01-19 Sherwood Medical Industries Inc. Infusion device
DE3146541A1 (en) * 1980-11-24 1982-09-09 Master Medical Corp., 85018 Phoenix, Ariz. Metering device
US4414999A (en) * 1980-12-12 1983-11-15 Basta Michael I Continuous flushing device
US4417890A (en) * 1981-08-17 1983-11-29 Baxter Travenol Laboratories, Inc. Antibacterial closure
WO1983000622A1 (en) * 1981-08-17 1983-03-03 Baxter Travenol Lab Antibacterial closure
US4601310A (en) * 1982-12-23 1986-07-22 Edwin Phillips Quick turn metering valve
DE3590339C2 (en) * 1984-07-13 1992-03-26 Master Medical Corp., Phoenix, Ariz., Us
US4703775A (en) * 1985-09-16 1987-11-03 Abbott Laboratories Liquid flow regulator
US4781698A (en) * 1987-04-09 1988-11-01 Parren Mark L Selectable drop size infusion metering device
US5040770A (en) * 1988-12-14 1991-08-20 Vojko Rajster Device for transforming a laminar fluid flow into drops
GB2228305A (en) * 1989-02-01 1990-08-22 Nomix Mfg Co Ltd A valve
US5234412A (en) * 1990-01-25 1993-08-10 Forberg Hans Juergen Flow regulator for a drip chamber
US5544855A (en) * 1993-09-15 1996-08-13 Wabco Vermogensverwaltungs Gmbh Valve
US5342025A (en) * 1993-12-31 1994-08-30 Hwang Shao Keh Magnetic control-type flow control valve
US6093182A (en) * 1998-05-11 2000-07-25 Merit Medical Systems, Inc. Wound irrigation shield adaptor
US8585661B2 (en) * 2003-07-09 2013-11-19 Jmc Co., Ltd. Mixture injection port
US20060184140A1 (en) * 2003-07-09 2006-08-17 Jms Co, Ltd Mixture injection port
US7168683B2 (en) 2004-05-24 2007-01-30 Illinois Tool Works Inc Oil drain valve
US20050258392A1 (en) * 2004-05-24 2005-11-24 Pliml Frank V Jr Oil drain valve
WO2006012769A1 (en) * 2004-08-05 2006-02-09 Gemü Gmbh Precision dose meter
EP1623735A1 (en) * 2004-08-05 2006-02-08 Gemü GmbH Fluid flow controller
US20110125103A1 (en) * 2009-11-25 2011-05-26 Baxter International Inc. Drip chamber with flow control
US8439880B2 (en) 2009-11-25 2013-05-14 Baxter Healthcare S.A. Drip chamber with flow control
CN102961802A (en) * 2012-11-26 2013-03-13 宋金磊 Stepped speed regulating device of infusion apparatus
CN103691036A (en) * 2013-01-04 2014-04-02 胡生物医药株式会社 Instillator for injection of ringer's solution
EP3011986A1 (en) * 2014-10-20 2016-04-27 Becton Dickinson Holdings Pte. Ltd. Iv flow regulator
US9839748B2 (en) 2014-10-20 2017-12-12 Becton Dickinson Holdings Pte. Ltd. IV flow regulator
US20230009550A1 (en) * 2021-07-12 2023-01-12 Zhe Dai Water faucet and pool assembly with water faucet

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