GB624704A - Improved ball floats - Google Patents

Improved ball floats

Info

Publication number
GB624704A
GB624704A GB2046146A GB2046146A GB624704A GB 624704 A GB624704 A GB 624704A GB 2046146 A GB2046146 A GB 2046146A GB 2046146 A GB2046146 A GB 2046146A GB 624704 A GB624704 A GB 624704A
Authority
GB
United Kingdom
Prior art keywords
ball floats
polythene
softening point
improved ball
tube
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
GB2046146A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB2046146A priority Critical patent/GB624704A/en
Publication of GB624704A publication Critical patent/GB624704A/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
    • F16K33/00—Floats for actuation of valves or other apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Taps Or Cocks (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)

Abstract

Ball floats are made by heating an end of a suitable length of polythene tube above its softening point, preferably to 105-115 DEG C., sealing the heated end, inserting into a mould consisting of two or more readily assembled and detached units, and introducing compressed gas into the tube to press it against the mould until it has cooled below the softening point of the polythene. The seamless ball float is suitable for use in storage and conducting systems for water and corrosive liquids such as strong alkali or acid, e.g. hydrofluoric acid.
GB2046146A 1946-07-09 1946-07-09 Improved ball floats Expired GB624704A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2046146A GB624704A (en) 1946-07-09 1946-07-09 Improved ball floats

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2046146A GB624704A (en) 1946-07-09 1946-07-09 Improved ball floats

Publications (1)

Publication Number Publication Date
GB624704A true GB624704A (en) 1949-06-15

Family

ID=10146325

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2046146A Expired GB624704A (en) 1946-07-09 1946-07-09 Improved ball floats

Country Status (1)

Country Link
GB (1) GB624704A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0995846A1 (en) * 1998-10-23 2000-04-26 VALSIR S.p.A. Float for flush valves, and modular-valve system featuring such a float

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0995846A1 (en) * 1998-10-23 2000-04-26 VALSIR S.p.A. Float for flush valves, and modular-valve system featuring such a float

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