GB1324168A - Plug valves - Google Patents

Plug valves

Info

Publication number
GB1324168A
GB1324168A GB1324168DA GB1324168A GB 1324168 A GB1324168 A GB 1324168A GB 1324168D A GB1324168D A GB 1324168DA GB 1324168 A GB1324168 A GB 1324168A
Authority
GB
United Kingdom
Prior art keywords
plug
port
valve
pliable material
dec
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
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
Publication of GB1324168A publication Critical patent/GB1324168A/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
    • F16K5/04—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 cylindrical surfaces; Packings therefor
    • F16K5/045—Particular coverings and materials
    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
    • F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
    • 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
    • F16K5/02—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 conical surfaces; Packings therefor
    • F16K5/025—Particular coverings or materials

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

1324168 Valves IMPERIAL CHEMICAL INDUSTRIES Ltd 23 Dec 1970 [31 Dec 1969] 63516/69 Heading F2V A rotatable plug valve has a valve member 72, 76 with a flow port or a peripheral flow passage 74 which co-operates with one or more body ports 71. At least that part of the plug adjacent a port 71 in the closed position of the valve, is formed from a pliable material, and is provided with a blind indentation or recess which overlies the port. Creep of the pliable material into the port, and tearing, are thereby avoided. The pliable material contains at least 60% by volume of a low-friction fluorine-containing polymer e.g. P.T.F.E.. polychlorotrifluoroethylene, polyvinyl fluoride, polyvinylidene fluoride, or copolymers of P.T.F.E. containing ethylene or hexafluoropropylene. The area enclosed by the indentation may be from 10% to 30% greater than the area of the port. As shown, the plug consists of an outer cylindrical portion 72 of P.T.F.E. and an inner plug 76 of elastomeric material which is compressible e.g. by a headed stem 77, 78 screwed into a button 79, to expand the outer portion into sealing engagement with the body. In modifications, the inner plug is compressed by a screw (50) or simply plugged into the outer portion, Figs. 4 and 6 (not shown). The valve may be of multiple-way type, Fig. 8 (not shown). In other embodiments the plug is conical and made in one piece of P.T.F.E. The plug has an integral handle 73.
GB1324168D 1969-12-31 1969-12-31 Plug valves Expired GB1324168A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6351669 1969-12-31

Publications (1)

Publication Number Publication Date
GB1324168A true GB1324168A (en) 1973-07-18

Family

ID=10489087

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1324168D Expired GB1324168A (en) 1969-12-31 1969-12-31 Plug valves

Country Status (2)

Country Link
FR (1) FR2074528A5 (en)
GB (1) GB1324168A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2472125A1 (en) * 1979-12-14 1981-06-26 Winter Oy DISPENSER, IN PARTICULAR FOR DOSING DEVICES IN MACHINES FOR THE MIXING OF PAINTS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2472125A1 (en) * 1979-12-14 1981-06-26 Winter Oy DISPENSER, IN PARTICULAR FOR DOSING DEVICES IN MACHINES FOR THE MIXING OF PAINTS

Also Published As

Publication number Publication date
FR2074528A5 (en) 1971-10-01

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees