WO2010104657A1 - Soupape à pointeau comprenant un pointeau non rotatif - Google Patents

Soupape à pointeau comprenant un pointeau non rotatif Download PDF

Info

Publication number
WO2010104657A1
WO2010104657A1 PCT/US2010/024614 US2010024614W WO2010104657A1 WO 2010104657 A1 WO2010104657 A1 WO 2010104657A1 US 2010024614 W US2010024614 W US 2010024614W WO 2010104657 A1 WO2010104657 A1 WO 2010104657A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
knob
valve
seat
region
Prior art date
Application number
PCT/US2010/024614
Other languages
English (en)
Inventor
Edward J. Day
Dennis Sims
Todd Ables
Original Assignee
Norgren, Inc.
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 Norgren, Inc. filed Critical Norgren, Inc.
Publication of WO2010104657A1 publication Critical patent/WO2010104657A1/fr

Links

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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • F16K31/508—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element
    • 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
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F16K1/38—Valve members of conical shape
    • F16K1/385—Valve members of conical shape contacting in the closed position, over a substantial axial length, a seat surface having the same inclination

Definitions

  • the invention is related to the field of valves, and more particularly, to a needle valve.
  • a needle valve is a valve wherein a needle element is moved with respect to a valve seat including an orifice.
  • the needle valve can provide a fine control of flow through the orifice.
  • the needle element may contact the sides or edges of the orifice when in a closed position. A portion of the needle element may extend into or through the orifice.
  • Conventional needle valves have drawbacks. Conventional needle valves may require tools to operate. Conventional needle valves may be recessed, such as in a bore, or may be otherwise inaccessible. Conventional needle valves may move inwardly and outwardly from a body, presenting potential clearance problems. Conventional needle valves may reside in a bore open to dirt, moisture, or other foreign material, presenting potential operational problems. Conventional needle valves are not limited in movement and therefore can be accidentally removed and be lost or can work out and be lost.
  • a needle valve comprises: a valve body including a valve bore and a valve seat; a non-rotating needle configured to move substantially axially in the valve bore relative to the valve seat and with the needle being blocked from rotating; and a knob rotatably coupled to the valve body and configured to be manually- operated, with rotation of the knob moving the needle substantially axially, without the knob moving axially with respect to the valve body.
  • the needle includes a proximal end including a needle tip and a distal end including a threaded region and with the knob including a closed threaded bore that receives the threaded region of the needle and directly couples the knob to the needle.
  • the closed threaded bore limits outward axial movement of the needle.
  • the needle further includes a seal region and one or more seal members disposed in the seal region, wherein the one or more seal members substantially seal to the needle and to the valve bore.
  • an anti-rotation device configured to block needle rotation within the valve bore.
  • the anti-rotation device comprises a shaped needle region on the needle between the threaded region and the needle tip and a corresponding shaped bore region of the valve bore, wherein the shaped needle region and the shaped bore region substantially interlock to block needle rotation.
  • the anti -rotation device comprises a knob seat formed in the valve body and sized to receive a portion of the knob, one or more seat rotational stops formed in the knob seat, a shaped needle region on the needle between the threaded region and the needle tip, and a shim configured to be positioned in the knob seat, with the shim including a substantially planar body, a shaped aperture corresponding to and substantially interlocking with the shaped needle region, and one or more shim rotational stops formed on the body and configured to engage the one or more seat rotational stops of the knob seat.
  • the one or more shim rotational stops comprising projections and with the one or more seat rotational stops comprising alternating projections configured to substantially interlock with the one or more shim rotational stops.
  • the one or more shim rotational stops comprising projections and with the one or more seat rotational stops comprising corresponding depressions configured to substantially interlock with the one or more shim rotational stops.
  • the one or more shim rotational stops comprising depressions and with the one or more seat rotational stops comprising projections corresponding configured to substantially interlock with the one or more shim rotational stops.
  • a needle valve comprises: a valve body including a valve bore and a valve seat; a non-rotating needle configured to move substantially axially in the valve bore relative to the valve seat, with the needle including a proximal end including a needle tip and a distal end including a threaded region; an anti-rotation device configured to block needle rotation within the valve bore; a knob rotatably coupled to the valve body and configured to be manually- operated, the knob including a closed threaded bore that receives the threaded region of the needle and directly couples the knob to the needle, wherein rotation of the knob generates the substantially axial movement of the needle, without axial movement of the knob; and a retainer that rotatably couples the knob to the valve body and holds the knob in position relative to the valve body.
  • the closed threaded bore limits outward axial movement of the needle.
  • the needle further includes a seal region and one or more seal members disposed in the seal region, wherein the one or more seal members substantially seal to the needle and to the valve bore.
  • the anti-rotation device comprises a shaped needle region on the needle between the threaded region and the needle tip and a corresponding shaped bore region of the valve bore, wherein the shaped needle region and the shaped bore region substantially interlock to block needle rotation.
  • the anti-rotation device comprises a knob seat formed in the valve body and sized to receive a portion of the knob, one or more seat rotational stops formed in the knob seat, a shaped needle region on the needle between the threaded region and the needle tip, and a shim configured to be positioned in the knob seat, with the shim including a substantially planar body, a shaped aperture corresponding to and substantially interlocking with the shaped needle region, and one or more shim rotational stops formed on the body and configured to engage the one or more seat rotational stops of the knob seat.
  • the one or more shim rotational stops comprising projections and with the one or more seat rotational stops comprising alternating projections configured to substantially interlock with the one or more shim rotational stops.
  • the one or more shim rotational stops comprising projections and with the one or more seat rotational stops comprising corresponding depressions configured to substantially interlock with the one or more shim rotational stops.
  • the one or more shim rotational stops comprising depressions and with the one or more seat rotational stops comprising projections corresponding configured to substantially interlock with the one or more shim rotational stops.
  • knob seat formed in the valve body and sized to receive a portion of the knob, with the knob seat including at least one side wall, a seat groove formed in the at least one side wall, and a knob groove formed in the knob, the retainer engaging the seat groove and the knob groove, wherein the knob rotates with respect to the valve body and is held in a fixed axial position with respect to the valve bore and the valve body by the retainer.
  • a needle valve comprises: a valve body including a valve bore and a valve seat; a non-rotating needle configured to move substantially axially in the valve bore relative to the valve seat, with the needle including a proximal end including a needle tip and a distal end including a threaded region; an anti-rotation device configured to block needle rotation within the valve bore; a knob rotatably coupled to the valve body and configured to be manually- operated, the knob including a closed threaded bore that receives the threaded region of the needle and directly couples the knob to the needle, wherein rotation of the knob generates the substantially axial movement of the needle, without axial movement of the knob and wherein the closed threaded bore limits outward axial movement of the needle; and a retainer that rotatably couples the knob to the valve body and holds the knob in position relative to the valve body.
  • the needle further includes a seal region and one or more seal members disposed in the seal region, wherein the one or more seal members substantially seal to the needle and to the valve bore.
  • the anti-rotation device comprises a shaped needle region on the needle between the threaded region and the needle tip and a corresponding shaped bore region of the valve bore, wherein the shaped needle region and the shaped bore region substantially interlock to block needle rotation.
  • the anti -rotation device comprises a knob seat formed in the valve body and sized to receive a portion of the knob, one or more seat rotational stops formed in the knob seat, a shaped needle region on the needle between the threaded region and the needle tip; and a shim configured to be positioned in the knob seat, with the shim including a substantially planar body, a shaped aperture corresponding to and substantially interlocking with the shaped needle region, and one or more shim rotational stops formed on the body and configured to engage the one or more seat rotational stops of the knob seat.
  • the one or more shim rotational stops comprising projections and with the one or more seat rotational stops comprising alternating projections configured to substantially interlock with the one or more shim rotational stops.
  • the one or more shim rotational stops comprising projections and with the one or more seat rotational stops comprising corresponding depressions configured to substantially interlock with the one or more shim rotational stops.
  • the one or more shim rotational stops comprising depressions and with the one or more seat rotational stops comprising projections corresponding configured to substantially interlock with the one or more shim rotational stops.
  • a knob seat formed in the valve body and sized to receive a portion of the knob, with the knob seat including at least one side wall, a seat groove formed in the at least one side wall, and a knob groove formed in the knob, the retainer engaging the seat groove and the knob groove, wherein the knob rotates with respect to the valve body and is held in a fixed axial position with respect to the valve bore and the valve body by the retainer.
  • FIG. 1 shows a needle valve according to the invention.
  • FIG. 2 shows detail of a non-rotating needle of the needle valve according to the invention.
  • FIG. 3 shows detail of a knob according to the invention.
  • FIG. 4 shows detail of a retainer according to the invention.
  • FIG. 5 shows detail of a shim according to the invention.
  • FIG. 6 illustrates an interlocking arrangement according to the invention.
  • FIG. 7 illustrates an interlocking arrangement according to the invention.
  • FIG. 8 illustrates an interlocking arrangement according to the invention.
  • FIGS. 1-8 and the following description depict specific examples to teach those skilled in the art how to make and use the best mode of the invention. For the purpose of teaching inventive principles, some conventional aspects have been simplified or omitted. Those skilled in the art will appreciate variations from these examples that fall within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. As a result, the invention is not limited to the specific examples described below, but only by the claims and their equivalents.
  • FIG. 1 shows a needle valve 100 according to the invention.
  • the needle valve 100 comprises a valve that regulates a fluid flow, where the fluid can comprise a gas, a liquid, a gas/liquid combination, or other flowable material.
  • the needle valve 100 can control and/or regulate the fluid flow through the positioning of a non-rotating needle 120 with respect to a valve seat 107.
  • the needle valve 100 therefore comprises a flow control device.
  • the needle valve 100 can comprise a stand-alone device, as is shown.
  • the needle valve 100 can comprise a component of another assembly.
  • the needle valve 100 can comprise a component of a valve assembly or a pilot valve assembly.
  • the needle valve 100 is employed to regulate flow through a valve assembly or regulate an opening or closing speed. Consequently, the needle valve 100 can be employed to form a slow start valve assembly, including in a pilot valve of a valve assembly.
  • the needle valve 100 includes a non-rotating needle 120 and a valve body 102 including a valve bore 104, a valve seat 107, and a port 109. The non-rotating needle 120 is blocked from rotating within the valve bore 104.
  • the needle valve 100 further includes a knob 160, a retainer 150, and an anti-rotation device configured to block needle rotation within the valve bore 104.
  • the non-rotating needle 120 is configured to move substantially axially in the valve bore 104 relative to the valve seat 107. The non-rotating needle 120 is blocked from rotating.
  • the relative position of the non-rotating needle 120 in relation to the valve seat 107 regulates a fluid flow therethrough.
  • the fluid flow can pass through the valve seat 107 and the port 109 in either direction, where the fluid flow can enter or exit the valve bore 104 through the port 109.
  • the non-rotating needle 120 includes a needle tip 124.
  • the needle tip 124 can be of any desired size, shape, or geometry.
  • the needle tip 124 can be designed to achieve any desired flow profile.
  • the needle tip 124 interacts with and can contact the valve seat 107.
  • the needle tip 124 can project at least partially through the valve seat 107, as shown in the figure.
  • the valve seat 107 comprises an aperture that leads to a port.
  • the valve seat 107 and the port 109 therefore conduct a fluid flow.
  • the valve seat 107 can comprise part of the valve body 102, as shown.
  • the valve seat 107 can alternatively include a separate component added to the valve bore 104, including a removable or replaceable valve seat 107.
  • the non-rotating needle 120 can comprise an elongate member including a proximal end 121 (the lower end in the figure; see FIG. 2) including the needle tip 124 and a distal end 122 (the upper end) including a threaded region 129.
  • a seal region 125 can be disposed between the proximal end 121 and the distal end 122, with the seal region 125 receiving and retaining one or more seal members 118.
  • the one or more seal members 118 substantially seal to the valve bore 104 and therefore can be positioned to allow a flow fluid to travel only between the port 109 and the valve seat 107.
  • the needle valve 100 further includes a knob 160 that rotates with respect to the valve body 102 and that is rotatably coupled to the valve body 102.
  • the knob 160 is configured to be manually operated.
  • the knob 160 therefore can include lobes, wings, knurling, roughening, or any other manner of gripping features to allow a user to grasp and rotate the knob 160.
  • the knob 160 is rotatably coupled to the valve body 102.
  • the knob 160 is configured to be manually-operated, with rotation of the knob 160 moving the non- rotating needle 120 substantially axially, without the knob 160 moving axially with respect to the valve body 102. Therefore, the knob 160 does not present any clearance problems and cannot extend or project outwardly from the valve body 102.
  • the knob 160 therefore maintains a very low profile that is constant in dimensions. No valve stem or knob projects to present clearance problems or snag an operator, for example.
  • the knob 160 can be substantially cylindrical, although other shapes can be employed.
  • the knob 160 can be of any desired size or shape.
  • the knob 160 can be of a size to block the valve bore 104, such as being the same size or larger.
  • the knob 160 includes a closed threaded bore 164.
  • the closed threaded bore 164 may be substantially centrally located in the knob 160.
  • the closed threaded bore 164 receives and cooperates with the threaded region 129 of the non-rotating needle 120, wherein rotation of the knob 160 (and the closed threaded bore 164) translates into axial movement of the non-rotating needle 120 through interaction with the threaded region 129 of the non-rotating needle 120.
  • the closed threaded bore 164 can be designed wherein the needle tip 124 moves over a predetermined span. Further, the closed threaded bore 164 can limit the outward axial movement of the non-rotating needle 120.
  • the closed threaded bore 164 can be sized (or threaded) to limit the outward axial movement at a predetermined location. Consequently, the non-rotating needle 120 will be stopped from moving axially outward when the end of the internal threading or the end of the bore 164 is reached. As a result, the non-rotating needle 120 cannot be accidentally removed from the valve bore 104. Further, the non-rotating needle 120 can not vibrate out or otherwise escape from the valve bore 104.
  • the valve body 102 further includes a knob seat 103.
  • the knob seat 103 comprises a recess in the valve body 102 and can receive at least a portion of the knob 160.
  • the knob seat 103 can include features that correspond to the shim 140 (see FIGS. 5-8 and the accompanying discussion below).
  • the knob seat 103 includes at least one side wall 105. If the knob seat 103 is not substantially circular or elliptical, for example, then the knob seat 103 can include more that one side wall 105 (see FIG. 7, for example).
  • the knob seat 103 can further include a seat groove 106 formed in the at least one side wall 105.
  • the seat groove 106 is configured to receive the retainer 150 that rotatably couples the knob 160 to the valve body 102.
  • the retainer 150 (see FIG. 4) can fit to the seat groove 106 through any manner of resilient or spring fit, can be assembled into the valve body 102, or can fit to the seat groove 106 in any manner.
  • the non-rotating needle 120 is blocked from rotating within the valve bore 104.
  • This figure shows one apparatus embodiment for blocking the needle rotation.
  • the non- rotating needle 120 can include a shaped needle region 126 (see FIG. 2) that interlocks with the shim 140 and the knob seat 103. As a consequence, the non-rotating needle 120 cannot rotate with respect to the valve body 102. Further detail is provided in the discussions accompanying FIGS. 6-8.
  • FIG. 2 shows detail of the non-rotating needle 120 of the needle valve 100 according to the invention.
  • the non-rotating needle 120 includes the proximal end 121 and the distal end 122.
  • the proximal end 121 includes the needle tip 124.
  • the needle tip 124 can be of any size, shape, or geometry.
  • the threaded region 129 is located at the distal end 122. Between the proximal end 121 and the distal end 122 is a seal region 125 and a shaped needle region 126.
  • the seal region 125 is configured to retain one or more seal members 136 on the non-rotating needle 120.
  • the seal region 125 in one embodiment comprises a seal groove 132 abutted by two seal ridges 133. However, it should be understood that the seal region 125 can comprise one or more of the seal groove 132 and the seal ridges 133.
  • the shaped needle region 126 comprises a shape that interlocks with other features of the needle valve 100 and blocks rotation of the non-rotating needle 120.
  • the shaped needle region 126 can comprise any shape.
  • the shaped needle region 126 comprises a cylindrical shaft including one or more flats 122, wherein the one or more flats 122 correspond to and interlock with other surfaces in order to block needle rotation.
  • other shapes are contemplated and are within the scope of the description and claims.
  • the shaped needle region 126 may have a different cross-sectional shape than the rest of the non-rotating needle 120.
  • FIG. 3 shows detail of the knob 160 according to the invention.
  • the knob 160 includes the knob groove 165 and a grip region 168.
  • the grip region 168 can include any manner of gripping features that enable a user to manually operate the knob 160.
  • the grip region 168 includes a plurality of lobes 166.
  • the gripping features can include any manner of features or shapes.
  • FIG. 4 shows detail of the retainer 150 according to the invention.
  • the retainer 150 includes a thickness and a needle aperture 153.
  • the retainer 150 can resiliently snap onto and engage a portion of the knob 160.
  • the retainer 150 can resiliently snap into the seat groove 106 of the valve body 102.
  • the retainer 150 may be positioned in the seat groove 106 during assembly and then another component, such as a casing or shell, for example, can be put into position in order to block the seat groove 106 and trap the retainer 150 within the seat groove 106.
  • the retainer 150 may or may not rotate with respect to the valve body 102.
  • the retainer 150 may or may not rotate with respect to the knob 160.
  • FIG. 5 shows detail of the shim 140 according to the invention.
  • the shim 140 includes a substantially planar body 141, a shaped aperture 144, and one or more shim rotational stops 145.
  • the body 141 can include any desired shape, including substantially circular, as shown in the figure. However, the shape of the body 141 can vary and is not limited to a circular shape (see FIG. 7 and the accompanying discussion below).
  • the shaped aperture 144 corresponds to and substantially interlocks with the shaped needle region 126. As a consequence, the non-rotating needle 120 cannot rotate with respect to the shim 140.
  • the one or more shim rotational stops 145 fit to and interlock with the knob seat 103. As a consequence, the shim 140 cannot rotate with respect to the knob seat 103.
  • the one or more shim rotational stops 145 can comprise any manner of interlocking features. In this embodiment, the one or more shim rotational stops 145 comprise one or more projections that extend from the body 141.
  • FIG. 6 illustrates an interlocking arrangement according to the invention.
  • the anti-rotation device in this embodiment includes the shim 140, the shaped needle region 126, and the knob seat 103.
  • the knob seat 103 includes one or more seat rotational stops 168 formed in the knob seat 103.
  • the one or more seat rotational stops 168 can comprise projections that alternate in placement from the one or more shim rotational stops 145 of the shim 140 and therefore interlock.
  • the one or more seat rotational stops 168 can comprise depressions corresponding to and fitting to the one or more shim rotational stops 145 of the shim and therefore interlock.
  • the shim 140 could alternatively include one or more shim rotational stops 145 in the form of depressions and the one or more seat rotational stops 168 can comprise interlocking projections.
  • FIG. 7 illustrates an interlocking arrangement according to the invention.
  • the anti-rotation device in this embodiment includes the shim 140, the shaped needle region 126, and the knob seat 103.
  • the knob seat 103 in this embodiment includes a predetermined shape, such as a shape including one or more flat sides, for example.
  • the shim 140 includes a corresponding perimeter shape, wherein the shim 140 interlocks with and is blocked from rotating by the shape of the knob seat 103.
  • the shaped aperture 144 of the shim 140 interlocks with the shaped needle region 126 of the non-rotating needle 120.
  • FIG. 8 illustrates an interlocking arrangement according to the invention.
  • the anti-rotation device in this embodiment includes the shaped needle region 126 and a shaped bore region 169 of the valve bore.
  • the interlocking arrangement in this embodiment does not interlock with the shim 140.
  • the shim 140 may or may not be included in this embodiment.
  • the valve bore 104 includes a shaped bore region 169 that substantially corresponds to the shaped needle region 126 of the non-rotating needle 120.
  • the shaped bore region 169 cooperates with the shaped needle region 126 to block rotation of the non-rotating needle 120.
  • the various embodiments of the invention can be implemented to provide several advantages, if desired.
  • the knob 160 does not move outwardly from the valve body 102.
  • the needle valve 100 is very compact in design. There is no need for tools in order to operate the needle valve 100, as the needle valve 100 is fully hand-adjustable.
  • the knob 160 can be of a size to function as a force multiplier and make movement easier.
  • the knob 160 is manually operable and therefore the needle valve as a whole is manually-operable.
  • the knob 160 can be of a size to be easy to see and grasp and can include appropriate indicia to indicate the needle valve's function and proper use.
  • the knob 160 is externally accessible, no matter the internal position of the needle.
  • the knob 160 can include projections/depressions that enable rotation by a tool.
  • the knob 160 is directly coupled to the non-rotating needle 120. There is no slop between the knob 160 and the non-rotating needle 120. The non-rotating needle 120 cannot move independently of the knob, as is possible where a spring biases the needle against a motive apparatus. Fluid flow will not be able to move the needle independently of the knob 160.
  • the knob 160 can limit the retraction of the non-rotating needle 120 from the valve seat 107.
  • the valve bore 104 is not open to the exterior, so there can be no accumulation of moisture and/or foreign matter.
  • the non-rotating needle 120 does not rotate.
  • the needle tip 124 consequently will not abrade against the valve seat 107.
  • the non-rotating needle 120 does not wear the needle tip 124 against the valve seat 107, resulting in a longer life, more accurate flow, and less leakage.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

L'invention porte sur une soupape à pointeau (100). La soupape à pointeau (100) comprend un corps de soupape (102) comprenant un alésage de soupape (104) et un siège de soupape (107). La soupape à pointeau (100) comprend en outre un pointeau non rotatif (120) configuré pour se déplacer sensiblement axialement dans l'alésage de soupape (104) par rapport au siège de soupape (107), le pointeau non rotatif (120) étant bloqué en rotation. La soupape à pointeau (100) comprend en outre un bouton (160) couplé en rotation au corps de soupape (102) et configuré pour être actionné manuellement, la rotation du bouton (160) déplaçant le pointeau non rotatif (120) sensiblement axialement, sans que le bouton (160) ne se déplace axialement par rapport au corps de soupape (102).
PCT/US2010/024614 2009-03-10 2010-02-18 Soupape à pointeau comprenant un pointeau non rotatif WO2010104657A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15895909P 2009-03-10 2009-03-10
US61/158,959 2009-03-10

Publications (1)

Publication Number Publication Date
WO2010104657A1 true WO2010104657A1 (fr) 2010-09-16

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017164845A1 (fr) * 2016-03-22 2017-09-28 Fmc Technologies, Inc. Soupape comprenant une tige de soupape dotée d'une section filetée et cannelée combinée

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US682688A (en) * 1897-05-03 1901-09-17 Sherwood Mfg Company Valve.
GB766637A (en) * 1953-05-21 1957-01-23 Stanley William Hoskins Improved stop valves
US4778150A (en) * 1987-03-06 1988-10-18 Autoclave Engineers, Inc. Non-rotating stem valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US682688A (en) * 1897-05-03 1901-09-17 Sherwood Mfg Company Valve.
GB766637A (en) * 1953-05-21 1957-01-23 Stanley William Hoskins Improved stop valves
US4778150A (en) * 1987-03-06 1988-10-18 Autoclave Engineers, Inc. Non-rotating stem valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017164845A1 (fr) * 2016-03-22 2017-09-28 Fmc Technologies, Inc. Soupape comprenant une tige de soupape dotée d'une section filetée et cannelée combinée
US20200049274A1 (en) * 2016-03-22 2020-02-13 Fmc Technologies, Inc. Valve including a valve stem with a combination threaded and splined section
US11112028B2 (en) 2016-03-22 2021-09-07 Fmc Technologies, Inc. Valve including a valve stem with a combination threaded and splined section

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