GB343866A - Improvements in or relating to valve structures - Google Patents

Improvements in or relating to valve structures

Info

Publication number
GB343866A
GB343866A GB22730/30A GB2273030A GB343866A GB 343866 A GB343866 A GB 343866A GB 22730/30 A GB22730/30 A GB 22730/30A GB 2273030 A GB2273030 A GB 2273030A GB 343866 A GB343866 A GB 343866A
Authority
GB
United Kingdom
Prior art keywords
per cent
maximum
relating
valve structures
bushes
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
GB22730/30A
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Publication of GB343866A publication Critical patent/GB343866A/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
    • 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
    • F16K3/22—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 sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—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 sealing faces shaped as surfaces of solids of revolution with cylindrical valve members

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)

Abstract

Guide bushes of a valve are made from a steel known as "Nitralloy," which contains 0,2 to 1,3 per cent of carbon, 0,4 to 0,6 per cent of manganese, 0,025 per cent maximum of phosphorus, 0,025 per cent maximum of sulphur, 0,5 per cent maximum of silicon, 0,2 per cent maximum of nickel, 0,75 to 1,5 per cent of chromium, 0,15 to 0,25 per cent of molybdenum, and 0,5 to 1,25 per cent of aluminium. The external surfaces of the bushes, particularly the bases, are subjected to a nitrogenizing process.
GB22730/30A 1929-07-31 1930-07-28 Improvements in or relating to valve structures Expired GB343866A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US343866XA 1929-07-31 1929-07-31

Publications (1)

Publication Number Publication Date
GB343866A true GB343866A (en) 1931-02-26

Family

ID=21876078

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22730/30A Expired GB343866A (en) 1929-07-31 1930-07-28 Improvements in or relating to valve structures

Country Status (1)

Country Link
GB (1) GB343866A (en)

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