US20090274566A1 - Check valve with plastic lip seal - Google Patents

Check valve with plastic lip seal Download PDF

Info

Publication number
US20090274566A1
US20090274566A1 US12/112,448 US11244808A US2009274566A1 US 20090274566 A1 US20090274566 A1 US 20090274566A1 US 11244808 A US11244808 A US 11244808A US 2009274566 A1 US2009274566 A1 US 2009274566A1
Authority
US
United States
Prior art keywords
poppet
seat
check valve
sealing lip
elastic member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/112,448
Inventor
John J. Fong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xylem IP Holdings LLC
Original Assignee
ITT Manufacturing Enterprises LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ITT Manufacturing Enterprises LLC filed Critical ITT Manufacturing Enterprises LLC
Priority to US12/112,448 priority Critical patent/US20090274566A1/en
Assigned to ITT MANUFACTURING ENTERPRISES, INC. reassignment ITT MANUFACTURING ENTERPRISES, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FONG, JOHN J.
Publication of US20090274566A1 publication Critical patent/US20090274566A1/en
Assigned to XYLEM IP HOLDINGS LLC reassignment XYLEM IP HOLDINGS LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ITT MANUFACTURING ENTERPRISES LLC
Priority to US15/638,675 priority patent/US10221954B2/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/102—Disc valves
    • F04B53/1032—Spring-actuated disc valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]

Definitions

  • This invention relates to a check valve; and more particularly to a check valve for a pump or other suitable device.
  • the assignee of the instant patent application is currently developing a pump that requires a high chemical resistance.
  • the pump may be used to process chemicals like hydrocarbon solvents or ethylene glycol monobutyl ether, or the like.
  • Typical parts for such a pump may include a diaphragm, check valves, etc., which must be resistant to corroding from the chemicals.
  • the parts can be made out of perfluoroelastomer which has a high chemical resistance; however, perfluoroelastomer is an expensive material.
  • the pump While a high cost material, such as perfluoroelastomer, may be used for the diaphragm of the pump, the pump is designed to include four (4) check valves, and the overall cost of the pump is directly impacted by the cost of making these check valves.
  • the assignee of the instant patent application has made check valves using perfluoroelastomer.
  • the cost of the check valve using perfluoroelastomer is about $5.00 per check valve.
  • the price for the perfluoroelastomer is too expensive to make check valve out of this type of elastomer, so there is a need to find a less expensive, yet effective, alternative.
  • the present invention provides a new and unique check valve having a seat and a poppet.
  • the seat is made of a plastic material, has an aperture for enabling fluid to flow through the seat, and also has one end portion that has a circumferential edge with a thin sealing lip.
  • the poppet is slidably arranged in the aperture of the seat and has an elastic member.
  • the poppet is configured for opening to enable fluid to flow in one direction when fluid pressure is detected.
  • the elastic member is configured for ensuring sealing between an outer circumferential surface of the poppet and the thin sealing lip of the seat when there is no fluid flow in the one direction so as to substantially prevent fluid flow in the opposite direction.
  • the thin plastic sealing lip may have a thickness of about 0.01′′ Testing data supports the operability of this thickness. Embodiments are also envisioned where the thickness may be in a range of 0.003′′-0.03′′. The use of plastic material allows for these tolerance re thickness of the thin sealing lip.
  • the assignee of the instant patent application has made check valves using perfluoroelastomer, which is a much more expensive material.
  • the cost of the check valve using perfluoroelastomer is about $5.00 per valve, while the cost of the check using plastic is about $0.20, which results in a cost savings of about $4.80/check valve.
  • the check valves according to the present invention forms part of a pump being made by the assignee of the instant patent application that typically includes four (4) such check valves. Since the overall cost of the pump being made using the check valve according to the present invention is about $20-25, the total cost saving resulting from the using the check valves using plastic according to the present invention has a substantial impact of the cost savings associated with the overall pump.
  • the plastic material being polypropylene
  • the thin sealing lip of the seat for coupling in a sealing manner with a circumferential curved outer surface of the poppet
  • the elastic member being a spring
  • the poppet having a cavity for receiving the elastic member
  • the elastic member being configured between the seat and the poppet for urging the poppet when no fluid flows in the one direction
  • the check valve having one or more O-rings arranged on the outer surface of the seat for sealing the seat in relation to another body or device to prevent fluid from leaking.
  • the check valve according to the present invention is design to use minimum perfluoroelastomer or use lower grade elastomer on the static sealing surface.
  • the design uses thin lip on the dynamic sealing surface to make plastic material more flexible for sealing purpose.
  • the invention ay also take the form of a pump having one or more check valves described herein.
  • FIG. 1 shows a side view of a check valve according to some embodiments of the present invention.
  • FIG. 2 shows a front view of the check valve in FIG. 1 .
  • FIG. 3 is a cross-sectional view of the check valve in FIG. 1 along the lines A-A shown in FIG. 2 .
  • FIG. 4 is an enlarged partial cross-sectional view of a check valve having a seat and a poppet that shows a thin lip seal formed at the interface between the poppet and the seat.
  • FIG. 5 a shows a graph of test data for a 1 st unit and a 2 nd unit having flow rate (GPM) versus discharge pressure (PSI).
  • FIG. 5 b shows the test data for the 1 st unit shown in the graph in FIG. 5 a.
  • FIG. 5 c shows the test data for the 2 nd unit shown in the graph in FIG. 5 a.
  • FIGS. 1-3 show a check valve generally indicated as 10 according to some embodiments of the present invention.
  • the check valve 10 includes a seat 1 , one or more O-rings 2 , a poppet 3 and an elastic member 4 such as a return spring.
  • the seat 1 is made of a plastic material, has an aperture 11 ( FIG. 4 ) for enabling fluid to flow through the seat 1 , and also has one end portion that has a circumferential edge 1 a with a thin sealing lip generally indicated as 5 .
  • the poppet 3 is slidably arranged in the aperture 11 of the seat 1 and has the return spring 4 .
  • the poppet 3 is configured for opening to enable fluid to flow in one direction when fluid pressure is detected.
  • the return spring 4 is configured for ensuring sealing between the poppet 3 and the thin sealing lip 5 of the seat 1 when there is no fluid flow in the one direction so as to substantially prevent fluid flow in the opposite direction.
  • the poppet 3 opens to enable fluid to flow in one direction when pressure is biased in one direction.
  • the return spring 4 ensures the sealing between an outer circumferential surface 3 a of the poppet 3 and the circumferential edge 1 a of the seat 1 when there is no flow.
  • the o-rings 2 seals the body and the endcap from leaking fluid to exterior of the pump (not shown).
  • FIG. 4 shows the thin lip seal 5 formed on the circumferential edge 1 a of the seat 1 that is formed at the interface between the poppet 3 and the seat 1 and that enables the plastic to be softer and more pliable to seal against poppet 3 .
  • the lip seal 5 may also be radiused (aka curved) for the purpose of deburring.
  • the thin plastic sealing lip may have a thickness of about 0.01′′, where the thickness is measured in terms of the sealing material of the circumferential edge 1 a that forms the thin lip seal 5 and that physically contacts the outer circumferential surface 3 a of the poppet 3 .
  • FIGS. 5 a - 5 c show testing data that supports the operability and viability of the present invention for a G57 prototype pump with 73 Shore A Kalrez diaphragm with PP check valve and Vitron.
  • FIG. 5 a shows a graph of test data for a 1 st unit and a 2 nd unit having flow rate (GPM) versus discharge pressure (PSI) for 20 PSI. 40 PSI, . . . , 100 PSI for test data for the 1 st and 2 nd units shown in FIGS. 5 b and 5 c.
  • the scope is to: generate 5 curves @ gas pressure 20-100 PSI (20 PSI increments) flow rate from lowest to open flow in approximate 0.5 GPM increments.
  • Embodiments are also envisioned where the thickness of the lip seal 5 may be in a range of 0.003′′-0.03′′.
  • the plastic material being made of polypropylene; the circumferential outer surface 3 a being a curved surface and the thin sealing lip 5 for coupling in a sealing manner with the circumferential curved outer surface 3 a of the poppet 3 ; the poppet 3 having a cavity 3 b for receiving the elastic member 4 ; the elastic member 4 being configured between the seat 1 and the poppet 3 for urging the poppet 3 when no fluid flows in the one direction; and the check valve 10 having one or more O-rings 2 arranged on the outer surface of the seat for sealing the seat 1 in relation to another body or device (not shown) to prevent fluid from leaking.
  • the invention comprises the features of construction, combination of elements, and arrangement of parts which will be exemplified in the construction hereinafter set forth.

Abstract

A check valve is provided having a seat and a poppet. The seat is made of a plastic material, has an aperture for enabling fluid to flow through the seat, and also has one end portion that has a circumferential edge with a thin sealing lip. The poppet is slidably arranged in the aperture of the seat and has an elastic member. The poppet is configured for opening to enable fluid to flow in one direction when fluid pressure is detected. The elastic member is configured for ensuring sealing between an outer surface of the poppet and the thin sealing lip of the seat when there is no fluid flow in the one direction so as to substantially prevent fluid flow in the opposite direction. According to some embodiments of the present invention, the thin plastic sealing lip may have a thickness of about 0.01″ Embodiments are also envisioned where the thickness may be in a range of 0.003″-0.03″.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of Invention
  • This invention relates to a check valve; and more particularly to a check valve for a pump or other suitable device.
  • 2. Description of Related Art
  • The assignee of the instant patent application is currently developing a pump that requires a high chemical resistance. The pump may be used to process chemicals like hydrocarbon solvents or ethylene glycol monobutyl ether, or the like. Typical parts for such a pump may include a diaphragm, check valves, etc., which must be resistant to corroding from the chemicals. The parts can be made out of perfluoroelastomer which has a high chemical resistance; however, perfluoroelastomer is an expensive material.
  • While a high cost material, such as perfluoroelastomer, may be used for the diaphragm of the pump, the pump is designed to include four (4) check valves, and the overall cost of the pump is directly impacted by the cost of making these check valves. For example, the assignee of the instant patent application has made check valves using perfluoroelastomer. Currently, the cost of the check valve using perfluoroelastomer is about $5.00 per check valve. In view of this, the price for the perfluoroelastomer is too expensive to make check valve out of this type of elastomer, so there is a need to find a less expensive, yet effective, alternative.
    • SUMMARY OF THE INVENTION
  • The present invention provides a new and unique check valve having a seat and a poppet. The seat is made of a plastic material, has an aperture for enabling fluid to flow through the seat, and also has one end portion that has a circumferential edge with a thin sealing lip. The poppet is slidably arranged in the aperture of the seat and has an elastic member. The poppet is configured for opening to enable fluid to flow in one direction when fluid pressure is detected. The elastic member is configured for ensuring sealing between an outer circumferential surface of the poppet and the thin sealing lip of the seat when there is no fluid flow in the one direction so as to substantially prevent fluid flow in the opposite direction.
  • According to some embodiments of the present invention, the thin plastic sealing lip may have a thickness of about 0.01″ Testing data supports the operability of this thickness. Embodiments are also envisioned where the thickness may be in a range of 0.003″-0.03″. The use of plastic material allows for these tolerance re thickness of the thin sealing lip.
  • The assignee of the instant patent application has made check valves using perfluoroelastomer, which is a much more expensive material. By way of example, the cost of the check valve using perfluoroelastomer is about $5.00 per valve, while the cost of the check using plastic is about $0.20, which results in a cost savings of about $4.80/check valve. The check valves according to the present invention forms part of a pump being made by the assignee of the instant patent application that typically includes four (4) such check valves. Since the overall cost of the pump being made using the check valve according to the present invention is about $20-25, the total cost saving resulting from the using the check valves using plastic according to the present invention has a substantial impact of the cost savings associated with the overall pump.
  • Other features of the present invention may include: the plastic material being polypropylene; the thin sealing lip of the seat for coupling in a sealing manner with a circumferential curved outer surface of the poppet; the elastic member being a spring; the poppet having a cavity for receiving the elastic member; the elastic member being configured between the seat and the poppet for urging the poppet when no fluid flows in the one direction; and the check valve having one or more O-rings arranged on the outer surface of the seat for sealing the seat in relation to another body or device to prevent fluid from leaking.
  • In effect, the check valve according to the present invention is design to use minimum perfluoroelastomer or use lower grade elastomer on the static sealing surface. The design uses thin lip on the dynamic sealing surface to make plastic material more flexible for sealing purpose.
  • The invention ay also take the form of a pump having one or more check valves described herein.
    • BRIEF DESCRIPTION OF THE DRAWING
  • FIG. 1 shows a side view of a check valve according to some embodiments of the present invention.
  • FIG. 2 shows a front view of the check valve in FIG. 1.
  • FIG. 3 is a cross-sectional view of the check valve in FIG. 1 along the lines A-A shown in FIG. 2.
  • FIG. 4 is an enlarged partial cross-sectional view of a check valve having a seat and a poppet that shows a thin lip seal formed at the interface between the poppet and the seat.
  • FIG. 5 a shows a graph of test data for a 1st unit and a 2nd unit having flow rate (GPM) versus discharge pressure (PSI).
  • FIG. 5 b shows the test data for the 1st unit shown in the graph in FIG. 5 a.
  • FIG. 5 c shows the test data for the 2nd unit shown in the graph in FIG. 5 a.
    • DESCRIPTION OF THE INVENTION
  • FIGS. 1-3 show a check valve generally indicated as 10 according to some embodiments of the present invention. The check valve 10 includes a seat 1, one or more O-rings 2, a poppet 3 and an elastic member 4 such as a return spring. The seat 1 is made of a plastic material, has an aperture 11 (FIG. 4) for enabling fluid to flow through the seat 1, and also has one end portion that has a circumferential edge 1 a with a thin sealing lip generally indicated as 5. The poppet 3 is slidably arranged in the aperture 11 of the seat 1 and has the return spring 4. The poppet 3 is configured for opening to enable fluid to flow in one direction when fluid pressure is detected. The return spring 4 is configured for ensuring sealing between the poppet 3 and the thin sealing lip 5 of the seat 1 when there is no fluid flow in the one direction so as to substantially prevent fluid flow in the opposite direction. The poppet 3 opens to enable fluid to flow in one direction when pressure is biased in one direction. The return spring 4 ensures the sealing between an outer circumferential surface 3 a of the poppet 3 and the circumferential edge 1 a of the seat 1 when there is no flow. The o-rings 2 seals the body and the endcap from leaking fluid to exterior of the pump (not shown).
  • FIG. 4 shows the thin lip seal 5 formed on the circumferential edge 1 a of the seat 1 that is formed at the interface between the poppet 3 and the seat 1 and that enables the plastic to be softer and more pliable to seal against poppet 3. As shown, the lip seal 5 may also be radiused (aka curved) for the purpose of deburring. The thin plastic sealing lip may have a thickness of about 0.01″, where the thickness is measured in terms of the sealing material of the circumferential edge 1 a that forms the thin lip seal 5 and that physically contacts the outer circumferential surface 3 a of the poppet 3.
  • FIGS. 5 a-5 c show testing data that supports the operability and viability of the present invention for a G57 prototype pump with 73 Shore A Kalrez diaphragm with PP check valve and Vitron. For example, FIG. 5 a shows a graph of test data for a 1st unit and a 2nd unit having flow rate (GPM) versus discharge pressure (PSI) for 20 PSI. 40 PSI, . . . , 100 PSI for test data for the 1st and 2nd units shown in FIGS. 5 b and 5 c. In FIGS. 5 a-5 c, the scope is to: generate 5 curves @ gas pressure 20-100 PSI (20 PSI increments) flow rate from lowest to open flow in approximate 0.5 GPM increments.
  • Embodiments are also envisioned where the thickness of the lip seal 5 may be in a range of 0.003″-0.03″.
  • Other features of the present invention include: the plastic material being made of polypropylene; the circumferential outer surface 3 a being a curved surface and the thin sealing lip 5 for coupling in a sealing manner with the circumferential curved outer surface 3 a of the poppet 3; the poppet 3 having a cavity 3 b for receiving the elastic member 4; the elastic member 4 being configured between the seat 1 and the poppet 3 for urging the poppet 3 when no fluid flows in the one direction; and the check valve 10 having one or more O-rings 2 arranged on the outer surface of the seat for sealing the seat 1 in relation to another body or device (not shown) to prevent fluid from leaking.
    • Scope of the Invention
  • Accordingly, the invention comprises the features of construction, combination of elements, and arrangement of parts which will be exemplified in the construction hereinafter set forth.
  • It will thus be seen that the objects set forth above, and those made apparent from the preceding description, are efficiently attained and, since certain changes may be made in the above construction without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

Claims (18)

1. A check valve comprising:
a seat being made of a plastic material, having an aperture for enabling fluid to flow through the seat, and also having one end portion that has a circumferential edge with a thin sealing lip formed thereon; and
a poppet being slidably arranged in the aperture of the seat and having an elastic member, the poppet configured for opening to enable fluid to flow in one direction when fluid pressure is detected, and the elastic member configured for ensuring sealing between an outer circumferential surface of the poppet and the thin sealing lip of the seat when there is no fluid flow in the one direction so as to substantially prevent fluid flow in the opposite direction.
2. A check valve according to claim 1, wherein the plastic material is polypropylene.
3. A check valve according to claim 1, wherein the thin sealing lip has a thickness of about 0.01″, where the thickness is measured in terms of the sealing material on the circumferential edge that physically contacts the outer circumferential surface of the poppet.
4. A check valve according to claim 3, wherein the thin sealing lip has a thickness in a range of 0.003″-0.03″.
5. A check valve according to claim 1, wherein the thin sealing lip couples in a sealing manner with a circumferential curved outer surface of the poppet.
6. A check valve according to claim 1, wherein the elastic member is a spring.
7. A check valve according to claim 1, wherein the poppet has a cavity for receiving the elastic member.
8. A check valve according to claim 1, wherein the elastic member is configured between the seat and the poppet for urging the poppet when no fluid flows in the one direction.
9. A check valve according to claim 1, wherein the thin sealing lip is curved.
10. A pump comprising:
one or more check valves, each having
a seat being made of a plastic material, having an aperture for enabling fluid to flow through the seat, and also having one end portion that has a circumferential edge with a thin sealing lip; and
a poppet being slidably arranged in the aperture of the seat and having an elastic member, the poppet configured for opening to enable fluid to flow in one direction when fluid pressure is detected, and the elastic member configured for ensuring sealing between an outer circumferential surface of the poppet and the thin sealing lip of the seat when there is no fluid flow in the one direction so as to substantially prevent fluid flow in the opposite direction.
11. A pump according to claim 10, wherein the plastic material is polypropylene.
12. A pump according to claim 10, wherein the thin sealing lip has a thickness of about 0.01″, where the thickness is measured in terms of the sealing material on the circumferential edge that physically contacts the outer circumferential surface of the poppet.
13. A pump according to claim 30, wherein the thin sealing lip has a thickness in a range of 0.003″-0.03″.
14. A pump according to claim 10, wherein the thin sealing lip couples in a sealing manner with a circumferential curved outer surface of the poppet.
15. A pump according to claim 10, wherein the elastic member is a spring.
16. A pump according to claim 10, wherein the poppet has a cavity for receiving the elastic member.
17. A pump according to claim 10, wherein the elastic member is configured between the seat and the poppet for urging the poppet when no fluid flows in the one direction.
18. A pump according to claim 10, wherein the thin sealing lip is curved.
US12/112,448 2008-04-30 2008-04-30 Check valve with plastic lip seal Abandoned US20090274566A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/112,448 US20090274566A1 (en) 2008-04-30 2008-04-30 Check valve with plastic lip seal
US15/638,675 US10221954B2 (en) 2008-04-30 2017-06-30 Check valve with plastic lip seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/112,448 US20090274566A1 (en) 2008-04-30 2008-04-30 Check valve with plastic lip seal

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/638,675 Continuation US10221954B2 (en) 2008-04-30 2017-06-30 Check valve with plastic lip seal

Publications (1)

Publication Number Publication Date
US20090274566A1 true US20090274566A1 (en) 2009-11-05

Family

ID=41257196

Family Applications (2)

Application Number Title Priority Date Filing Date
US12/112,448 Abandoned US20090274566A1 (en) 2008-04-30 2008-04-30 Check valve with plastic lip seal
US15/638,675 Active US10221954B2 (en) 2008-04-30 2017-06-30 Check valve with plastic lip seal

Family Applications After (1)

Application Number Title Priority Date Filing Date
US15/638,675 Active US10221954B2 (en) 2008-04-30 2017-06-30 Check valve with plastic lip seal

Country Status (1)

Country Link
US (2) US20090274566A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150173937A1 (en) * 2012-06-12 2015-06-25 Flowsense Ltd. Novel tubing valve and uses thereof
US10369342B2 (en) * 2014-07-09 2019-08-06 Toppan Printing Co., Ltd. Drug solution injection device
US10718375B2 (en) 2016-05-16 2020-07-21 Roller Bearing Company Of America, Inc. Bearing system with self-lubrication features, seals, grooves and slots for maintenance-free operation
US11473626B2 (en) 2016-05-16 2022-10-18 Roller Bearing Company Of America, Inc. Bearing system with self-lubrication features, seals, grooves and slots for maintenance-free operation
US11796066B2 (en) 2019-11-21 2023-10-24 Itt Manufacturing Enterprises Llc Dual motion shutoff valve

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3590851A (en) * 1968-08-06 1971-07-06 Halkey Roberts Corp Check valve
US3770001A (en) * 1971-07-06 1973-11-06 Maytag Co Valve construction
US4176681A (en) * 1977-09-07 1979-12-04 Mackal Glenn H Oral inflation valve
US4305425A (en) * 1978-06-19 1981-12-15 Mackal Glenn H Oral inflation valve
US4408632A (en) * 1981-04-23 1983-10-11 Brunswick Corporation High flow shroud check valve
US5135025A (en) * 1991-07-03 1992-08-04 Mackal Glenn H Articulated oral inflation valve
US5172720A (en) * 1992-02-03 1992-12-22 Eaton Corporation Single seal fluid control valve
US5181690A (en) * 1990-08-16 1993-01-26 Xomox International Gmbh & Co. Shut-off valve
US5525048A (en) * 1993-12-15 1996-06-11 Walbro Corporation Cantilever armature mount for fuel pumps
US5533548A (en) * 1995-05-18 1996-07-09 Caterpillar Inc. Valving interface for a poppet valve
US6877525B2 (en) * 2001-11-07 2005-04-12 Delphi Technologies, Inc. Check valve for fuel pump
US20050263187A1 (en) * 2004-05-28 2005-12-01 Jernigan Jay M Check valve barbed casing
US7036523B2 (en) * 2001-06-22 2006-05-02 Kenneth Nixon Serviceable check valve

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1581778A (en) * 1920-08-26 1926-04-20 Henry E Blomgren Valve device
US3626977A (en) * 1970-01-21 1971-12-14 Circle Seal Corp Combination check and pressure relief valve
US3701361A (en) * 1971-03-08 1972-10-31 Stuart E Bunn Valve assembly and valve member therefor
US7708025B2 (en) * 2005-03-07 2010-05-04 Colder Products Company Poppet valve member

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3590851A (en) * 1968-08-06 1971-07-06 Halkey Roberts Corp Check valve
US3770001A (en) * 1971-07-06 1973-11-06 Maytag Co Valve construction
US4176681A (en) * 1977-09-07 1979-12-04 Mackal Glenn H Oral inflation valve
US4305425A (en) * 1978-06-19 1981-12-15 Mackal Glenn H Oral inflation valve
US4408632A (en) * 1981-04-23 1983-10-11 Brunswick Corporation High flow shroud check valve
US5181690A (en) * 1990-08-16 1993-01-26 Xomox International Gmbh & Co. Shut-off valve
US5135025A (en) * 1991-07-03 1992-08-04 Mackal Glenn H Articulated oral inflation valve
US5172720A (en) * 1992-02-03 1992-12-22 Eaton Corporation Single seal fluid control valve
US5525048A (en) * 1993-12-15 1996-06-11 Walbro Corporation Cantilever armature mount for fuel pumps
US5533548A (en) * 1995-05-18 1996-07-09 Caterpillar Inc. Valving interface for a poppet valve
US7036523B2 (en) * 2001-06-22 2006-05-02 Kenneth Nixon Serviceable check valve
US6877525B2 (en) * 2001-11-07 2005-04-12 Delphi Technologies, Inc. Check valve for fuel pump
US20050263187A1 (en) * 2004-05-28 2005-12-01 Jernigan Jay M Check valve barbed casing

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150173937A1 (en) * 2012-06-12 2015-06-25 Flowsense Ltd. Novel tubing valve and uses thereof
US9867730B2 (en) * 2012-06-12 2018-01-16 Flowsense Ltd. Tubing valve and uses thereof
US10369342B2 (en) * 2014-07-09 2019-08-06 Toppan Printing Co., Ltd. Drug solution injection device
US10718375B2 (en) 2016-05-16 2020-07-21 Roller Bearing Company Of America, Inc. Bearing system with self-lubrication features, seals, grooves and slots for maintenance-free operation
US11473626B2 (en) 2016-05-16 2022-10-18 Roller Bearing Company Of America, Inc. Bearing system with self-lubrication features, seals, grooves and slots for maintenance-free operation
US11796066B2 (en) 2019-11-21 2023-10-24 Itt Manufacturing Enterprises Llc Dual motion shutoff valve

Also Published As

Publication number Publication date
US20180128389A1 (en) 2018-05-10
US10221954B2 (en) 2019-03-05

Similar Documents

Publication Publication Date Title
US10221954B2 (en) Check valve with plastic lip seal
US10480695B2 (en) Joint structure and robot
EP2409059B1 (en) High pressure duckbill valve and insert
CN100365336C (en) Fluid control valve
US10821453B2 (en) Shower jet generating device
WO2006113883A2 (en) Orifice flow meters
RU2006118742A (en) REDUCED BLOCKING ENDOSCOPE CONNECTORS
CN109642674B (en) Sealing device and sealing assembly
US20060102235A1 (en) Integratable sanitary part
JP2006029457A (en) Switch valve for coating material
ATE454582T1 (en) DIAPHRAGM FOR DIAPHRAGM VALVE
KR20160115059A (en) The valve seat device having a removable way ball valve seat surface cleaning means
US9987570B2 (en) Filter element and filtering device
EP2050990A1 (en) Gasket
CN106793934B (en) Cleaning-sterlizing machine for endoscope
US20220056680A1 (en) Vacuum Breaker Valve With Leak Protection
EP1839875A1 (en) A sealing member for cartridge of inkjet printer
US20030178792A1 (en) Sealing head
CN105840470B (en) Pump and apparatus for coating
JPH10267143A (en) Check valve
JP2020076417A (en) Sealing mechanism
JP2006123576A (en) Fuel check valve
CN107848170A (en) Valve system at least one liquid plastic component
KR200357768Y1 (en) check valve coupling
US8512482B2 (en) Device for blocking fluid passage through a tubular part by means of a check valve, particularly in a household appliance

Legal Events

Date Code Title Description
AS Assignment

Owner name: ITT MANUFACTURING ENTERPRISES, INC., DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FONG, JOHN J.;REEL/FRAME:021373/0611

Effective date: 20080529

AS Assignment

Owner name: XYLEM IP HOLDINGS LLC, NEW YORK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ITT MANUFACTURING ENTERPRISES LLC;REEL/FRAME:027808/0331

Effective date: 20111025

STCB Information on status: application discontinuation

Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION