EP0000098B1 - Tight shutoff butterfly valve - Google Patents

Tight shutoff butterfly valve Download PDF

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Publication number
EP0000098B1
EP0000098B1 EP78300029A EP78300029A EP0000098B1 EP 0000098 B1 EP0000098 B1 EP 0000098B1 EP 78300029 A EP78300029 A EP 78300029A EP 78300029 A EP78300029 A EP 78300029A EP 0000098 B1 EP0000098 B1 EP 0000098B1
Authority
EP
European Patent Office
Prior art keywords
body ring
liner
valve
face
face plate
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.)
Expired
Application number
EP78300029A
Other languages
German (de)
French (fr)
Other versions
EP0000098A1 (en
Inventor
Edward George Holtgraver
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.)
Fisher Controls International LLC
Original Assignee
Fisher Controls International 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 Fisher Controls International LLC filed Critical Fisher Controls International LLC
Publication of EP0000098A1 publication Critical patent/EP0000098A1/en
Application granted granted Critical
Publication of EP0000098B1 publication Critical patent/EP0000098B1/en
Expired legal-status Critical Current

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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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0218—Butterfly 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
    • Y10T137/6851—With casing, support, protector or static constructional installations
    • Y10T137/7036—Jacketed

Definitions

  • This invention relates to tight shutoff butterfly valves, and particularly to such valves having a corrosion-resistant resilient liner.
  • the body castings of these prior art valves have been provided with a boss on the body to which is attached an automatic or manual valve actuator.
  • Such cast-body valves are expensive and cumbersome to manufacture, because the casting must ordinarily be inspected visually or by X-ray methods for flaws, the flaws welded, and the body machined on various surfaces with the attendant generation of substantial amounts of scrap metal shavings.
  • the invention comprises a butterfly valve to be installed between pipeline flanges and secured by flange bolts, comprising a cylindrical body ring having a cylindrical bore and a face portion at each end of the body ring; a corrosion-resistant, resilient liner covering the cylindrical bore and integrally projecting radially outwards along the face portions completely around the bore for a limited distance; a shaft rotatable about its longitudinal axis extending through the body ring and the liner transversely to the axis of the body ring; a disk attached to the shaft within the body ring and liner and having a sealing fit with the liner; and at least one face plate, characterised in that the body ring is formed from a section of pipe or tubing; the said at least one face plate is formed from a metal thinner in the axial direction that the portion of the liner projecting over a corresponding face portion of the body ring and has an opening that circumscribes the said liner portion; and the said at least one face plate has a tab that extends radially out
  • the tab on the face plate includes cut-out portions for pipeline flange bolts whereby the valve may be centred between the flanges.
  • each plate has an annular ringlike portion and first and second tab portions.
  • the annular ringlike portion of each face plate has an inner diameter slightly larger than the outer diameter of the face portions of the valve liner, and each plate is thinner in the direction of the valve body ring axis than the face portions of the liner.
  • the tab portions of these plates extend radially outwardly from the body ring and the first tab portion provides means for mounting an actuator, manual or automatic, to the assembled valve.
  • a valve according to this invention is assembled into a pipeline by mounting between two conventional pipe flanges, the flange bolts fitting around the outside of the valve body ring and the face plate tabs extending between two of the bolts.
  • the flange bolts When the flange bolts are tightened, each of the liner face portions is compressed between a side of the body ring and a pipe flange to effect a seal therebetween.
  • the compression of the liner face portions is limited by abutment of the pipe flange against the annular portion of the face plate, to prevent damage to the liner face portion.
  • the tightened flange bolts rigidly clamp the face plates between the pipe flanges and the valve body ring.
  • An actuator mounted on the first tab portions of the face plates is maintained in a fixed position relative to the valve shaft by the immobile face plates.
  • a cylindrical valve body ring 10 made of a rigid material, has a resilient liner 12, a layer of elastomer, vulcanized or bonded to the body ring 10 such that the liner 12 covers the cylindrical bore of the body ring 10 and extends outwardly from the body ring bore to cover a portion of each of the end faces of the body ring 10 to form two annular flange-like liner face portions 13.
  • the valve body ring 10 is adapted to receive a rotary valve shaft 16 transverse to the axis of the body ring 10.
  • valve disk 14 On the valve shaft 16, within the valve body ring 10, is retained a closure member or valve disk 14, which may be made from a metallic material, such as stainless steel or bronze, or a nonmetallic material such as glassfiber reinforced plastic, to be chemically and physically resistant to the fluid which is to flow through the valve.
  • the valve disk 14 has an enlarged portion 15 through which the valve shaft 16 extends.
  • the valve disk 14 is fixedly retained on the valve shaft 16 by taper pin 18 which is inserted into aligned tapered holes 19 in the valve shaft 16 and the enlarged portion 15 of valve disk 14.
  • the two ends of the valve shaft 16 extend through two holes 24, formed diametrically opposite each other through the liner 12 and body ring 10, to the exterior of the valve body ring 10.
  • valve shaft 16 One end of the valve shaft 16 is adapted to engage a rotary valve actuator, for example, by splines 17 shown on valve shaft 16 or by a groove and key (not shown). Within the holes 24 the valve shaft 16 is supported by bearing bushings 22 which may be formed of a low friction fluorocarbon resin.
  • bearing bushings 22 which may be formed of a low friction fluorocarbon resin.
  • the rubber sealing member In conventional tight-shutoff rubber lined valves it is common for the rubber sealing member to be fitted into the valve body. The valve body confines the internal line pressure while the rubber sealing member provides for tight shutoff. Similarly, it has been common to require packing within each aperture in the valve body to prevent leakage of fluid from the interior of the valve to the exterior.
  • the liner 12 is designed to resist line pressure with the body ring 10 acting as a back-up ring to provide structural rigidity. Additionally, the internal diameter of the cylindrical liner 12 of the valve of this invention is sized for an interference fit with the valve disk 14 whereby the resilient elastomer liner 12 sealingly engages the periphery of the valve disk 14 when the disk is rotated to a position transverse to the axis of the body ring 10. An interference fit is also formed between the elastomer liner 12 and the valve shaft 16 which forms a seal to prevent fluid leakage through the holes 24. No separate sealing member has been shown; however, a seal for example, an o-ring, may be used within holes 24 to prevent fluid leakage through the holes 24. The relative physical positions of these valve pieces may be more easily understood by examination of Figure 2 which shows a cross-sectional view of the butterfly valve of this invention taken along the sectional line 2-2 in Figure 1.
  • Each face plate 30 has an annular ring-like portion 31, with an inner diameter slightly larger than the outer diameter of the face portion 13 of valve liner 12, and first and second tab portions 32 and 34.
  • the first tab portions 32 of the face plates 30 extend radially outwardly from the ring-like portion 31 of the face plates 30 and provide a means for mounting an actuator to the assembled valve.
  • FIG. 1 and 2 An example of an actuator mounting means is shown in Figures 1 and 2 wherein the first tab portions 32 of each of the face plates 30 are extended radially outwardly, and parallel one another, from the ring-like portion 31 a short distance where they then are sloped toward one another before bending to form parallel facing planar portions terminating in ears 33 which extend away from one another at about a right angle from the planar area.
  • a second tab portion 34 extends from the ring-like portion 31 of the face plate 30 diametrically opposite the first tab portion 32.
  • the second tab portion 34 of each of the face plates 30 extend radially from the ring-like portions 31 of the face plates 30 and are then bent at about a right angle toward one another to extend, externally of the valve body ring 10, parallel the axis of the valve body ring 10.
  • the two second tab portions 34 approach each other at the exterior of the valve body ring 10 to retain the second end of the valve shaft 16 for reasons of safety. Should the valve shaft 16 fracture in service, the actuator retains one end of the valve shaft 16 within the valve body ring 10 while the second tab portions 34 prevent outwardly longitudinal movement of the second end of valve shaft 16.
  • each face plate 30 is thinner in the direction of the valve body ring 10 axis than the face portions 13 of the valve liner 12. Also, as noted above, the inner diameter of the ring-like portion 31 of face plate 30 is slightly larger than the outer diameter of the face portion 13 of valve liner 12. When the valve is assembled, as shown in Figure 2, a gap 20 is left between the ring-like portion 31 of face plate 30 and the face portion 13 of valve liner 12.
  • FIG. 3 the butterfly valve of Figures 1 and 2 is shown in a sectional view, mounted between conventional pipe flanges 41 which are held together by flange bolts 42. Additionally, an actuator 40 is shown bolted to the ears 33 which extend from the first tab portions 32 of the face plates 30.
  • a manual actuator 40 is shown; however, any rotary valve actuator, manual or automatic, may be used with this valve.
  • the outer diameter of the ring- like portion 31 of face plates 30 is sized so that flange bolts 42 will fit around the outside of face plate 30 with only a small clearance; thus, the flange bolts 42 center the butterfly valve between the pipe flanges 41.
  • the second tab portion 34 of the face plates 30 is sized such that, when the assembled valve is installed in a pipeline by mounting the valve between conventional pipe flanges 41, the second tab portion 34 extends between two of the flange bolts 42.
  • the first tab portions 32 of face plates 30 include cutout portions or holes 35 through which the pipeline flange bolts 42 extend to aid in centering of the valve between the line flanges 41.
  • valve body ring is cut from a section of the pipe or tubing which are inexpensive and readily available rather than requiring a heavier, more expensive casting.
  • a resilient lining is provided within the valve body ring for tight shut-off.

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

Description

  • This invention relates to tight shutoff butterfly valves, and particularly to such valves having a corrosion-resistant resilient liner.
  • In butterfly valves designed for tight shutoff, it has been common to employ a cast-metal valve body which is provided with a resilient liner of some suitable material such as an elastomer, halocarbon polymers, and the like. A disk having a sealing fit with the liner is attached to a shaft, the shaft being rotatable about its axis and extending through the body and liner transversely to the axis of the body. German Auslegeschrift No. 1,290,395 discloses a valve of this kind wherein the liner has integral ring-shaped flanges seating on ring-shaped rebates in the valve body.
  • Typically, the body castings of these prior art valves have been provided with a boss on the body to which is attached an automatic or manual valve actuator.
  • Such cast-body valves are expensive and cumbersome to manufacture, because the casting must ordinarily be inspected visually or by X-ray methods for flaws, the flaws welded, and the body machined on various surfaces with the attendant generation of substantial amounts of scrap metal shavings.
  • The invention comprises a butterfly valve to be installed between pipeline flanges and secured by flange bolts, comprising a cylindrical body ring having a cylindrical bore and a face portion at each end of the body ring; a corrosion-resistant, resilient liner covering the cylindrical bore and integrally projecting radially outwards along the face portions completely around the bore for a limited distance; a shaft rotatable about its longitudinal axis extending through the body ring and the liner transversely to the axis of the body ring; a disk attached to the shaft within the body ring and liner and having a sealing fit with the liner; and at least one face plate, characterised in that the body ring is formed from a section of pipe or tubing; the said at least one face plate is formed from a metal thinner in the axial direction that the portion of the liner projecting over a corresponding face portion of the body ring and has an opening that circumscribes the said liner portion; and the said at least one face plate has a tab that extends radially outwards from the body ring, the tab providing means for mounting an actuator on the assembled butterfly valve body; whereby, when the butterfly valve is installed between pipeline flanges, the portion of the liner projecting over the said face portion of the body ring is compressed between the said face portion and a pipeline flange to form a flange seal and the said at least one face plate is isolated from the bore of the body ring, the extent of such compression being limited by the thickness of the said at least one face plate.
  • Preferably, the tab on the face plate includes cut-out portions for pipeline flange bolts whereby the valve may be centred between the flanges.
  • In a preferred construction, two face plates are provided, one on each side of the valve body ring, each plate having an annular ringlike portion and first and second tab portions. The annular ringlike portion of each face plate has an inner diameter slightly larger than the outer diameter of the face portions of the valve liner, and each plate is thinner in the direction of the valve body ring axis than the face portions of the liner. The tab portions of these plates extend radially outwardly from the body ring and the first tab portion provides means for mounting an actuator, manual or automatic, to the assembled valve.
  • A valve according to this invention is assembled into a pipeline by mounting between two conventional pipe flanges, the flange bolts fitting around the outside of the valve body ring and the face plate tabs extending between two of the bolts. When the flange bolts are tightened, each of the liner face portions is compressed between a side of the body ring and a pipe flange to effect a seal therebetween. The compression of the liner face portions is limited by abutment of the pipe flange against the annular portion of the face plate, to prevent damage to the liner face portion. The tightened flange bolts rigidly clamp the face plates between the pipe flanges and the valve body ring. An actuator mounted on the first tab portions of the face plates is maintained in a fixed position relative to the valve shaft by the immobile face plates.
  • Attention is now directed to the drawings, in which:
    • FIG. 1 is an exploded view of a butterfly valve according to this invention; and
    • FIG. 2 is a sectional view of the valve of FIG. 1, taken at line 2-2.
    • FIG. 3 is a sectional view of the valve of FIG. 2 showing the valve installed between conventional pipe flanges with an actuator mounted on the face plates.
  • Referring now to Figure 1 an exploded view of a butterfly valve of this invention is shown. A cylindrical valve body ring 10, made of a rigid material, has a resilient liner 12, a layer of elastomer, vulcanized or bonded to the body ring 10 such that the liner 12 covers the cylindrical bore of the body ring 10 and extends outwardly from the body ring bore to cover a portion of each of the end faces of the body ring 10 to form two annular flange-like liner face portions 13. The valve body ring 10 is adapted to receive a rotary valve shaft 16 transverse to the axis of the body ring 10. On the valve shaft 16, within the valve body ring 10, is retained a closure member or valve disk 14, which may be made from a metallic material, such as stainless steel or bronze, or a nonmetallic material such as glassfiber reinforced plastic, to be chemically and physically resistant to the fluid which is to flow through the valve. The valve disk 14 has an enlarged portion 15 through which the valve shaft 16 extends. The valve disk 14 is fixedly retained on the valve shaft 16 by taper pin 18 which is inserted into aligned tapered holes 19 in the valve shaft 16 and the enlarged portion 15 of valve disk 14. The two ends of the valve shaft 16 extend through two holes 24, formed diametrically opposite each other through the liner 12 and body ring 10, to the exterior of the valve body ring 10. One end of the valve shaft 16 is adapted to engage a rotary valve actuator, for example, by splines 17 shown on valve shaft 16 or by a groove and key (not shown). Within the holes 24 the valve shaft 16 is supported by bearing bushings 22 which may be formed of a low friction fluorocarbon resin. In conventional tight-shutoff rubber lined valves it is common for the rubber sealing member to be fitted into the valve body. The valve body confines the internal line pressure while the rubber sealing member provides for tight shutoff. Similarly, it has been common to require packing within each aperture in the valve body to prevent leakage of fluid from the interior of the valve to the exterior. In the valve of this invention, the liner 12 is designed to resist line pressure with the body ring 10 acting as a back-up ring to provide structural rigidity. Additionally, the internal diameter of the cylindrical liner 12 of the valve of this invention is sized for an interference fit with the valve disk 14 whereby the resilient elastomer liner 12 sealingly engages the periphery of the valve disk 14 when the disk is rotated to a position transverse to the axis of the body ring 10. An interference fit is also formed between the elastomer liner 12 and the valve shaft 16 which forms a seal to prevent fluid leakage through the holes 24. No separate sealing member has been shown; however, a seal for example, an o-ring, may be used within holes 24 to prevent fluid leakage through the holes 24. The relative physical positions of these valve pieces may be more easily understood by examination of Figure 2 which shows a cross-sectional view of the butterfly valve of this invention taken along the sectional line 2-2 in Figure 1.
  • Referring to Figure 1 again, a pair of face plates 30 are provided. Each face plate 30 has an annular ring-like portion 31, with an inner diameter slightly larger than the outer diameter of the face portion 13 of valve liner 12, and first and second tab portions 32 and 34. The first tab portions 32 of the face plates 30 extend radially outwardly from the ring-like portion 31 of the face plates 30 and provide a means for mounting an actuator to the assembled valve. An example of an actuator mounting means is shown in Figures 1 and 2 wherein the first tab portions 32 of each of the face plates 30 are extended radially outwardly, and parallel one another, from the ring-like portion 31 a short distance where they then are sloped toward one another before bending to form parallel facing planar portions terminating in ears 33 which extend away from one another at about a right angle from the planar area.
  • An actuator may be attached to the ears 33 by use of bolt holes 36. Many other attachment configurations would serve equally well. A second tab portion 34 extends from the ring-like portion 31 of the face plate 30 diametrically opposite the first tab portion 32. The second tab portion 34 of each of the face plates 30 extend radially from the ring-like portions 31 of the face plates 30 and are then bent at about a right angle toward one another to extend, externally of the valve body ring 10, parallel the axis of the valve body ring 10. The two second tab portions 34 approach each other at the exterior of the valve body ring 10 to retain the second end of the valve shaft 16 for reasons of safety. Should the valve shaft 16 fracture in service, the actuator retains one end of the valve shaft 16 within the valve body ring 10 while the second tab portions 34 prevent outwardly longitudinal movement of the second end of valve shaft 16.
  • As shown in Figure 2, each face plate 30 is thinner in the direction of the valve body ring 10 axis than the face portions 13 of the valve liner 12. Also, as noted above, the inner diameter of the ring-like portion 31 of face plate 30 is slightly larger than the outer diameter of the face portion 13 of valve liner 12. When the valve is assembled, as shown in Figure 2, a gap 20 is left between the ring-like portion 31 of face plate 30 and the face portion 13 of valve liner 12.
  • Referring now to Figure 3, the butterfly valve of Figures 1 and 2 is shown in a sectional view, mounted between conventional pipe flanges 41 which are held together by flange bolts 42. Additionally, an actuator 40 is shown bolted to the ears 33 which extend from the first tab portions 32 of the face plates 30. Here a manual actuator 40 is shown; however, any rotary valve actuator, manual or automatic, may be used with this valve. The outer diameter of the ring- like portion 31 of face plates 30 is sized so that flange bolts 42 will fit around the outside of face plate 30 with only a small clearance; thus, the flange bolts 42 center the butterfly valve between the pipe flanges 41. The second tab portion 34 of the face plates 30 is sized such that, when the assembled valve is installed in a pipeline by mounting the valve between conventional pipe flanges 41, the second tab portion 34 extends between two of the flange bolts 42. The first tab portions 32 of face plates 30 include cutout portions or holes 35 through which the pipeline flange bolts 42 extend to aid in centering of the valve between the line flanges 41.
  • When the assembled valve is installed in a pipeline between two conventional pipe flanges 41, as shown in Figure 3, tightening of the flange bolts 42 forces the pipe flanges 41 against the protruding elastomer of the liner face portions 13 and the elastomer is axially compressed to form a flange seal until further compression is prevented by abutment of the pipe flanges 41 against the face plates 30. Tightening of the flange bolts 42 also rigidly clamps the face plates 30 between the pipe flanges 41 and the faces of the valve body ring 10, resulting in the face plates 30 being immobile relative to the valve body ring 10 and thereby providing a stationary support for an actuator 40.
  • Thus, there has been provided by the present invention a simple inexpensive lined butterfly valve in which the actuator mounting structure is made separately from the valve body. The face plates which support the actuator are made separately from the valve body, thus the valve body ring is cut from a section of the pipe or tubing which are inexpensive and readily available rather than requiring a heavier, more expensive casting. A resilient lining is provided within the valve body ring for tight shut-off.

Claims (2)

1. A butterfly valve to be installed between pipeline flanges (41) and secured by flange, bolts (42), comprising a cylindrical body ring (10) having a cylindrical bore and a face portion at each end of the body ring; a corrosion-resistant, resilient liner (12) covering the cylindrical bore and integrally projecting radially outwards along the face portions completely around the bore for a limited distance; a shaft (16) rotatable about its longitudinal axis extending through the body ring and the liner transversely to the axis of the body ring; a disk (14), attached to the shaft within the body ring and liner and having a sealing fit with the liner; and at least one face plate (30), characterised in that the body ring (10) is formed from a section of pipe or tubing; the said at least one face plate (30) is formed from a metal thinner in the axial direction than the portion of the liner (13) projecting over a corresponding face portion of the body ring and has an opening that circumscribes the said liner portion; and the said at least one face plate (30) has a tab (32) that extends radially outwards from the body ring, the tab providing means for mounting an actuator (40) on the assembled butterfly valve body; whereby, when the butterfly valve is installed between pipeline flanges, the portion of the liner projecting over the said face portion of the body ring (10) is compressed between the said face portion and a pipeline flange (41) to form a flange seal and the said at least one face plate (30) is isolated from the bore of the body ring, the extent of such compression being limited by the thickness of the said at least one face plate.
2. A butterfly valve according to Claim 1, wherein the tab (32) on the said at least one face plate (30) includes cut-out portions (35) for pipeline flange bolts (42) whereby the valve may be centred between the flanges (41).
EP78300029A 1977-06-13 1978-06-09 Tight shutoff butterfly valve Expired EP0000098B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/805,671 US4148458A (en) 1977-06-13 1977-06-13 Tight shutoff butterfly valve
US805671 1977-06-13

Publications (2)

Publication Number Publication Date
EP0000098A1 EP0000098A1 (en) 1978-12-20
EP0000098B1 true EP0000098B1 (en) 1981-02-11

Family

ID=25192188

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78300029A Expired EP0000098B1 (en) 1977-06-13 1978-06-09 Tight shutoff butterfly valve

Country Status (10)

Country Link
US (1) US4148458A (en)
EP (1) EP0000098B1 (en)
JP (1) JPS5442030A (en)
AU (1) AU517617B2 (en)
BR (1) BR7803738A (en)
CA (1) CA1076540A (en)
DE (1) DE2860459D1 (en)
ES (1) ES470605A1 (en)
IT (1) IT1095166B (en)
MX (1) MX146764A (en)

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DE4217448C2 (en) * 1991-06-07 2001-09-13 Mueller Ag Verpackungen Muench Maintenance-friendly throttle valve assembly
DE10310212A1 (en) * 2003-03-08 2004-09-16 Mahle Filtersysteme Gmbh Butterfly valve assembly for air inlet manifold of vehicle engine, includes butterfly flap lying in closure plane close to planes of separation of casing components

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US4308805A (en) * 1979-07-16 1982-01-05 Nichols Engineering & Research Corp. High temperature damper
JPS63145877A (en) * 1986-12-09 1988-06-17 Kurimoto Iron Works Ltd Valve box for butterfly type valve
FR2605380A1 (en) * 1986-10-17 1988-04-22 Sepame Sa Insulation device on a butterfly valve
US4832079A (en) * 1988-03-15 1989-05-23 Sterner Industries, Inc. Dual valve system
CA1323357C (en) * 1988-11-29 1993-10-19 Stanley Lloyd Baldwin Butterfly valve for erosive fluid streams
US5236003A (en) * 1993-01-19 1993-08-17 Helmut Habicht Modular butterfly valve
US5681025A (en) * 1995-01-20 1997-10-28 Kohler Co. Motor operated butterfly valve with a multi-function seal
IT236441Y1 (en) * 1997-02-04 2000-08-17 Tassalini Officina Meccanica S THROTTLE
ITTO980018A1 (en) * 1998-01-12 1999-07-12 Rizzio Valvole S P A INTERCEPTION AND ADJUSTMENT VALVE FOR FLUIDS WITH BUTTERFLY SHUTTER.
NL1008658C2 (en) * 1998-03-20 1999-09-21 Lande En Zonen B V Van De Gate valve.
DE10200121A1 (en) * 2002-01-04 2003-07-10 Siemens Ag throttle body
TWI223039B (en) * 2003-03-28 2004-11-01 Tomoe Technical Res Company Lt Butterfly valve
JP3668733B2 (en) * 2003-03-28 2005-07-06 株式会社巴技術研究所 Valve stem shaft seal device for butterfly valve
DE10322280A1 (en) * 2003-05-16 2004-12-02 Alfa Laval Lkm A/S butterfly valve
US7093618B2 (en) * 2004-04-30 2006-08-22 Honeywell International, Inc. Lounge valve mounting housing and assembly
ITMO20070083A1 (en) * 2007-03-14 2008-09-15 Wam Spa BUTTERFLY VALVE FOR PLANTS FOR GRANULAR AND / OR POWDERED MATERIALS.
JP5154888B2 (en) 2007-10-19 2013-02-27 大豊工業株式会社 Valve assembly
US20110084226A1 (en) * 2009-10-12 2011-04-14 Honeywell International Inc. Full straight-shaft sealing butterfly valve
EP2619489B1 (en) 2010-09-20 2017-06-28 Norgren GmbH Butterfly valve
EP3722642B1 (en) * 2019-04-10 2022-02-23 Georg Fischer Rohrleitungssysteme AG Butterfly valve
US11236830B2 (en) * 2019-04-30 2022-02-01 Fisher Controls International Llc Seal glands for butterfly valves
DE102019127890B3 (en) * 2019-10-16 2020-12-17 Adams Gmbh Fitting with blow-out protection
KR102316746B1 (en) * 2021-04-14 2021-10-26 신진정공 주식회사 butterfly valve with anti-corrosion intergrated valve seat and flange

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4217448C2 (en) * 1991-06-07 2001-09-13 Mueller Ag Verpackungen Muench Maintenance-friendly throttle valve assembly
DE10310212A1 (en) * 2003-03-08 2004-09-16 Mahle Filtersysteme Gmbh Butterfly valve assembly for air inlet manifold of vehicle engine, includes butterfly flap lying in closure plane close to planes of separation of casing components

Also Published As

Publication number Publication date
IT7824471A0 (en) 1978-06-12
MX146764A (en) 1982-08-11
IT1095166B (en) 1985-08-10
AU3703078A (en) 1979-12-20
BR7803738A (en) 1979-01-16
US4148458A (en) 1979-04-10
AU517617B2 (en) 1981-08-13
ES470605A1 (en) 1979-02-01
JPS6123429B2 (en) 1986-06-05
CA1076540A (en) 1980-04-29
EP0000098A1 (en) 1978-12-20
DE2860459D1 (en) 1981-03-26
JPS5442030A (en) 1979-04-03

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