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GB301950A - Improvements in or relating to non-return valves - Google Patents

Improvements in or relating to non-return valves

Info

Publication number
GB301950A
GB301950A GB2358227A GB2358227A GB301950A GB 301950 A GB301950 A GB 301950A GB 2358227 A GB2358227 A GB 2358227A GB 2358227 A GB2358227 A GB 2358227A GB 301950 A GB301950 A GB 301950A
Authority
GB
United Kingdom
Prior art keywords
valve
actuated
casing
conduit
chamber
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
GB2358227A
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.)
Glenfield and Kennedy Ltd
Original Assignee
Glenfield and Kennedy 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 Glenfield and Kennedy Ltd filed Critical Glenfield and Kennedy Ltd
Priority to GB2358227A priority Critical patent/GB301950A/en
Publication of GB301950A publication Critical patent/GB301950A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Lift Valve (AREA)

Abstract

301,950. Glenfield & Kennedy, Ltd., and Price, O. A. Sept. 8, 1927. Fluid-actuated valves. - A non- return valve is biassed to the closed position by an unbalanced load which increases as the valve opens and is actuated by a pressure differential resulting from the formation of the water passage acting through means which set up a dashpot action as the valve closes. In the form shown in Fig. 1, the casing is constricted at 2 to cause a reduction in pressure above the valve member and the valve member 3 is arranged to slide over a fixed inner member 9 to form a chamber 4. The chamber 4 communicates with the inlet 1 through a valve controlled passage 10 and a passage 5 adapted to be closed as the valve approaches its seat. The valve member is partly counterbalanced by a weighted lever 6 bent so that the load bending to close the valve increases as the valve moves to its open position. When the device is arranged horizontally the lever is arranged so that the effect of the weight 6 is a maximum in the open position of the valve. In the form shown in Fig. 3 an eccentrically mounted butterfly valve is mounted in a contracted part 16 of the casing 15 on a shaft 12 provided with a pair of vanes 14 working in arcuate chambers 21, 22 formed by partitions 23, 24 in a casing 13. The chambers on one side of each vane are connected by pipes 19, 20 controlled by a cock 28 to the contracted part of the conduit and those on the other side by pipes 17, 18, 18<1> controlled by a cock 27 to a full bore section. The pipe 18<1> is provided with a non- return valve 29 and a bye-pass 26 having a throttling screw 25 whereby the rate of closing may be regulated. In a modification the valve is actuated by a piston connected by a link to the valve member which is arranged in an expanded part of the conduit. In a further modification the valve is in the form of a flap pivoted to one side of a square conduit and is actuated by a hinged member working in a segmental chamber. Specification 302,526 is referred to.
GB2358227A 1927-09-08 1927-09-08 Improvements in or relating to non-return valves Expired GB301950A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2358227A GB301950A (en) 1927-09-08 1927-09-08 Improvements in or relating to non-return valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2358227A GB301950A (en) 1927-09-08 1927-09-08 Improvements in or relating to non-return valves

Publications (1)

Publication Number Publication Date
GB301950A true GB301950A (en) 1928-12-10

Family

ID=10198005

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2358227A Expired GB301950A (en) 1927-09-08 1927-09-08 Improvements in or relating to non-return valves

Country Status (1)

Country Link
GB (1) GB301950A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511538A (en) * 1943-10-01 1950-06-13 Hydraulic Dev Corp Inc Rotary balancing valve
DE1140416B (en) * 1955-11-15 1962-11-29 Liquid Controls Corp Valve with damping device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511538A (en) * 1943-10-01 1950-06-13 Hydraulic Dev Corp Inc Rotary balancing valve
DE1140416B (en) * 1955-11-15 1962-11-29 Liquid Controls Corp Valve with damping device

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