GB1323041A - Valves - Google Patents

Valves

Info

Publication number
GB1323041A
GB1323041A GB19571A GB1323041DA GB1323041A GB 1323041 A GB1323041 A GB 1323041A GB 19571 A GB19571 A GB 19571A GB 1323041D A GB1323041D A GB 1323041DA GB 1323041 A GB1323041 A GB 1323041A
Authority
GB
United Kingdom
Prior art keywords
flap
frame
tidal
hinge
steel bars
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
GB19571A
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.)
COPLASTIX Ltd
Original Assignee
COPLASTIX 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 COPLASTIX Ltd filed Critical COPLASTIX Ltd
Publication of GB1323041A publication Critical patent/GB1323041A/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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
    • F16K15/031—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member the hinge being flexible
    • 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
    • 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
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Revetment (AREA)

Abstract

1323041 Tidal valves COPLASTIX Ltd 30 March 1972 [2 Jan 1971] 195/71 Heading E1C [Also in Division F2] A tidal flap valve, which may be positioned in sea walls, in banks of tidal rivers or in banks of other water courses in which water level varies, comprises a plastics material frame 4 which is securable to a wall about an opening through which fluid is to flow and which .has hingedly secured thereto a flap valve member 8, the frame including a horizontally extending projection 5. The flap 8 comprises a sheath 16 of rigid polyvinyl chloride covered by skins of a suitable abrasion and impact resistant resin, the sheath 16 containing a shear resistant plastics foam 18, e.g. rigid-polyvinyl chloride foam, and a series of steel bars 20. The face of the flap facing the frame opening 3 has bonded thereto a foam rubber sealing element 22 which, in the closed position of the valve (shown), engages a sealing surface 28 which is so arranged as to have an inclined surface that tapers from a thickened lower portion upwardly until at an uppermost portion it merges with the surface of the frame proper. The flap 8 is hinged to the frame portion immediately below projection 5 by way of a flexible plastics material hinge 12, e.g. a hinge of non-cellular polyurethane. The hinge is securely anchored to the frame way of a bolt 10, a metal plate 11 and a plastics head 14, and to the flap by way of a bolt 24 engaging one of the steel bars 20 and a backing strip 26. The number of steel bars 20 contained in the flap is so selected as to render the overall density of the flap slightly greater than the density of the liquid prevailing in the region outside the flap.
GB19571A 1971-01-02 1971-01-02 Valves Expired GB1323041A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19571 1971-01-02

Publications (1)

Publication Number Publication Date
GB1323041A true GB1323041A (en) 1973-07-11

Family

ID=9700100

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19571A Expired GB1323041A (en) 1971-01-02 1971-01-02 Valves

Country Status (1)

Country Link
GB (1) GB1323041A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2512689A1 (en) * 1974-03-28 1975-10-02 Coplastix Ltd FLAP VALVE FOR LIQUIDS
FR2318361A1 (en) * 1975-07-16 1977-02-11 Nippon Oil Seal Ind Co Ltd SOFT BLADE VALVE WITH IMPROVED SEALING

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2512689A1 (en) * 1974-03-28 1975-10-02 Coplastix Ltd FLAP VALVE FOR LIQUIDS
FR2318361A1 (en) * 1975-07-16 1977-02-11 Nippon Oil Seal Ind Co Ltd SOFT BLADE VALVE WITH IMPROVED SEALING

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years