ES432702A1 - Rotary valves - Google Patents

Rotary valves

Info

Publication number
ES432702A1
ES432702A1 ES432702A ES432702A ES432702A1 ES 432702 A1 ES432702 A1 ES 432702A1 ES 432702 A ES432702 A ES 432702A ES 432702 A ES432702 A ES 432702A ES 432702 A1 ES432702 A1 ES 432702A1
Authority
ES
Spain
Prior art keywords
cooperating
valve element
circulation
coating
pair
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
ES432702A
Other languages
Spanish (es)
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.)
Saab AB
Original Assignee
Saab Scania AB
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 Saab Scania AB filed Critical Saab Scania AB
Publication of ES432702A1 publication Critical patent/ES432702A1/en
Expired legal-status Critical Current

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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0663—Packings
    • F16K5/0673—Composite packings
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details

Landscapes

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

Abstract

An arrangement for valves having a rotary valve member, which is arranged to rotate in a circulation duct and the periphery of which is formed by a rotary body preferably having a spherical shape, and whose valve element is adapted to close or opening said circulation conduit, thus cooperating with the seating means located around the circulation conduit, at least on one side of the valve element, said cooperating parts being made of a hard metallic material and forming at least one pair of cooperating closing surfaces which are pressed against each other and which, when rotating the valve element, execute a relative rotational and sliding movement while exerting a high specific force of mutual contact, characterized in that one of the two parts that together form a pair of closing surfaces, is provided, on the side of the same that makes pressure contact n by means of the other part, of a pure metallic molybdenum coating, a coating that has the form of a layer attached to the base material of said part, and that is preferably applied thermally, forming said layer, after being finally machined, a sealing surface having a lower hardness than the sealing surface of the other part, thereby allowing the valve sealing surfaces to be protected against bite when subjected to high temperatures together with the high pressure of the circulation medium flowing, said protection being obtained as a result of the lubrication effect (friction reducing effect) provided by the molybdenum coating or coatings. (Machine-translation by Google Translate, not legally binding)
ES432702A 1973-12-10 1974-12-07 Rotary valves Expired ES432702A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7316611A SE381327B (en) 1973-12-10 1973-12-10 DEVICE AT VALVES WITH ROTARY VALVE BODY

Publications (1)

Publication Number Publication Date
ES432702A1 true ES432702A1 (en) 1976-12-01

Family

ID=20319326

Family Applications (1)

Application Number Title Priority Date Filing Date
ES432702A Expired ES432702A1 (en) 1973-12-10 1974-12-07 Rotary valves

Country Status (8)

Country Link
JP (1) JPS5222681B2 (en)
AT (1) AT334706B (en)
DE (1) DE2457230C3 (en)
ES (1) ES432702A1 (en)
FI (1) FI61239C (en)
FR (1) FR2253963B1 (en)
GB (1) GB1486934A (en)
SE (1) SE381327B (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5462529A (en) * 1977-10-28 1979-05-19 Nippon Carbon Co Ltd Valve seat
JPS5366526A (en) * 1977-11-25 1978-06-14 Hitachi Ltd Full-wave rectifier
JPS55166210U (en) * 1979-05-18 1980-11-29
DE3321819C1 (en) * 1983-06-16 1984-07-26 Werner Dipl.-Ing. 3167 Burgdorf Hartmann Rooster with spherical chick
JPS6019869U (en) * 1983-07-19 1985-02-12 株式会社　日阪製作所 Ball valve sealing device
GB2176872A (en) * 1984-03-21 1987-01-07 Karsten Laing Ball valve faucet
JPS6121893A (en) * 1984-07-11 1986-01-30 Mitsubishi Heavy Ind Ltd Emergency course turning equipment for ship
GB8515929D0 (en) * 1985-06-24 1985-07-24 Waverley Components & Products Valve
DE9216543U1 (en) * 1992-12-04 1993-03-25 Cerpraecis Anwendungen für Ingenieurkeramik GmbH, 4650 Gelsenkirchen Shut-off device in the form of a ball valve
RU2153616C2 (en) * 1994-08-17 2000-07-27 Наваль ОЙ Ball cock with full opening and method for making it
DE19530224B4 (en) * 1995-08-17 2006-01-05 Friatec Ag Sealing arrangement for a butterfly valve or a butterfly valve
FI111410B (en) * 1999-04-07 2003-07-15 Sento Oy Hoegfors Ball seal in ball valve
DE102004051781A1 (en) * 2004-10-22 2006-04-27 Carl Freudenberg Kg Seal, useful e.g. in flap valve, comprises elastomeric molded body, which exhibits a layer applied by plasma polymerization
EP1650254A1 (en) 2004-10-22 2006-04-26 Carl Freudenberg KG Seal with reduced torque, process for obtaining, its use as seal in flap valve and flap valve
DE102009025341A1 (en) * 2009-06-18 2010-12-23 Schaeffler Technologies Gmbh & Co. Kg Control valve for regulating coolant circuit of internal combustion engine, has two feed connections arranged on valve housing for cooling water of bypass circuit and for cooling water of cooling circuit
CN102374305A (en) * 2010-08-24 2012-03-14 陆功工业股份有限公司 Ball valve
CN102705526A (en) * 2012-07-02 2012-10-03 苏州道森阀门有限公司 Self-adjusting valve seat type upper-mounted ball valve
WO2015162734A1 (en) 2014-04-23 2015-10-29 三菱電機株式会社 Relay device and data transfer method
CN105570488A (en) * 2016-02-03 2016-05-11 台州苏捷制阀有限公司 DC low-voltage IC card electric ball valve
CN106246951A (en) * 2016-08-26 2016-12-21 赛洛克流体设备成都有限公司 A kind of ball valve of replaceable black box
CN106195318A (en) * 2016-08-26 2016-12-07 赛洛克流体设备成都有限公司 A kind of band butterfly spring can compensate for the ball valve of the prooving of valve seat
US11536371B2 (en) 2018-03-09 2022-12-27 Nok Corporation Sealing device and method for assembling same
CN112253791A (en) * 2020-10-29 2021-01-22 上海沪东造船阀门有限公司 Double-sealing ball valve with compensation valve seat

Also Published As

Publication number Publication date
AT334706B (en) 1976-02-10
ATA978974A (en) 1976-05-15
FR2253963A1 (en) 1975-07-04
FI61239B (en) 1982-02-26
DE2457230A1 (en) 1975-06-26
JPS5222681B2 (en) 1977-06-18
FI61239C (en) 1982-06-10
FR2253963B1 (en) 1977-03-25
SE7316611L (en) 1975-06-11
GB1486934A (en) 1977-09-28
DE2457230C3 (en) 1979-02-15
FI354074A (en) 1975-06-11
SE381327B (en) 1975-12-01
DE2457230B2 (en) 1978-06-29
JPS5094532A (en) 1975-07-28

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