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GB2459570B - Process for hardfacing of bore and seat face intersection on gate valve - Google Patents

Process for hardfacing of bore and seat face intersection on gate valve

Info

Publication number
GB2459570B
GB2459570B GB0907490A GB0907490A GB2459570B GB 2459570 B GB2459570 B GB 2459570B GB 0907490 A GB0907490 A GB 0907490A GB 0907490 A GB0907490 A GB 0907490A GB 2459570 B GB2459570 B GB 2459570B
Authority
GB
United Kingdom
Prior art keywords
bore
valve seat
coating
hardfacing
gate valve
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.)
Active
Application number
GB0907490A
Other versions
GB0907490D0 (en
GB2459570A (en
Inventor
David D Comeaux
Salvador G Maldonado
Eddie J Mayea
Madhesha Udipi
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.)
Vetco Gray LLC
Original Assignee
Vetco Gray 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 Vetco Gray LLC filed Critical Vetco Gray LLC
Publication of GB0907490D0 publication Critical patent/GB0907490D0/en
Publication of GB2459570A publication Critical patent/GB2459570A/en
Application granted granted Critical
Publication of GB2459570B publication Critical patent/GB2459570B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0227—Packings
    • F16K3/0236—Packings the packing being of a non-resilient material, e.g. ceramic, metal
    • 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
    • F16K25/00—Details relating to contact between valve members and seats
    • F16K25/005—Particular materials for seats or closure elements
    • 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
    • F16K25/00—Details relating to contact between valve members and seats
    • F16K25/04—Arrangements for preventing erosion, not otherwise provided for

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Spray Control Apparatus (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

A method of treating a valve with a coating 32, such as tungsten carbide, includes depositing the coating with a spray stream 45 that is oriented perpendicular to the surface being treated. The method comprises applying the coating of uniform thickness onto lateral surface 18 of a valve seat 16, a portion of the valve seat bore 22, and the chamfered edge between the valve seat lateral surface 18 and the valve seat bore 22. The valve seat bore 22 can include an annular recess 55 formed to receive a layer of coating.
GB0907490A 2008-05-01 2009-05-01 Process for hardfacing of bore and seat face intersection on gate valve Active GB2459570B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4957108P 2008-05-01 2008-05-01

Publications (3)

Publication Number Publication Date
GB0907490D0 GB0907490D0 (en) 2009-06-10
GB2459570A GB2459570A (en) 2009-11-04
GB2459570B true GB2459570B (en) 2010-07-07

Family

ID=40792082

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0907490A Active GB2459570B (en) 2008-05-01 2009-05-01 Process for hardfacing of bore and seat face intersection on gate valve

Country Status (3)

Country Link
GB (1) GB2459570B (en)
MY (1) MY149053A (en)
SG (2) SG156606A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120080634A1 (en) * 2010-09-30 2012-04-05 Vetco Gray Inc. valve bore sealing method and apparatus
US8689886B2 (en) * 2011-06-20 2014-04-08 Vetco Gray Inc. Gate valve seat and seat ring

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282869A (en) * 1993-10-15 1995-04-19 Vetco Gray Inc Abb Gate valve
GB2352494A (en) * 1999-07-15 2001-01-31 Vetco Gray Inc Abb Shear gate valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282869A (en) * 1993-10-15 1995-04-19 Vetco Gray Inc Abb Gate valve
GB2352494A (en) * 1999-07-15 2001-01-31 Vetco Gray Inc Abb Shear gate valve

Also Published As

Publication number Publication date
SG156606A1 (en) 2009-11-26
GB0907490D0 (en) 2009-06-10
SG172725A1 (en) 2011-07-28
MY149053A (en) 2013-07-15
GB2459570A (en) 2009-11-04

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