GB190904659A - Improvements relating to Stop and like Valves for Controlling the Flow of Steam, Water and other Fluids. - Google Patents

Improvements relating to Stop and like Valves for Controlling the Flow of Steam, Water and other Fluids.

Info

Publication number
GB190904659A
GB190904659A GB190904659DA GB190904659A GB 190904659 A GB190904659 A GB 190904659A GB 190904659D A GB190904659D A GB 190904659DA GB 190904659 A GB190904659 A GB 190904659A
Authority
GB
United Kingdom
Prior art keywords
valves
locking
stop
fluids
steam
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
Inventor
James Ashton Fletcher
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB190904659A publication Critical patent/GB190904659A/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
    • F16K35/00—Means to prevent accidental or unauthorised actuation

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

4659. Fletcher, J. A. Feb. 25. Locking valves.-Consists in the provision of automatic means for preventing the opening of stop and like valves when there exists a predetermined difference between the pressures at its two sides. The apparatus comprises a locking-piece h adapted to take over a collar i on the valve spindle and guided by slots o in a casing t supported by pillars n. The locking piece is secured between collars f on a spindle e provided at the ends with pistons c, d moving in cylinders a, b. The cylinder a containing the larger piston is connected to the inlet side of the main valve, so that when the main valve is open the excess pressure on the larger piston releases the locking-bar. A spring may be employed to effect or assist this movement.
GB190904659D 1909-02-25 1909-02-25 Improvements relating to Stop and like Valves for Controlling the Flow of Steam, Water and other Fluids. Expired GB190904659A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190904659T 1909-02-25

Publications (1)

Publication Number Publication Date
GB190904659A true GB190904659A (en) 1909-12-09

Family

ID=32490387

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190904659D Expired GB190904659A (en) 1909-02-25 1909-02-25 Improvements relating to Stop and like Valves for Controlling the Flow of Steam, Water and other Fluids.

Country Status (1)

Country Link
GB (1) GB190904659A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009074803A1 (en) * 2007-12-11 2009-06-18 Isentropic Limited Valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009074803A1 (en) * 2007-12-11 2009-06-18 Isentropic Limited Valve
US8453677B2 (en) 2007-12-11 2013-06-04 Isentropic Limited Valve
US8496026B2 (en) 2007-12-11 2013-07-30 Isentropic Limited Valve
CN101896749B (en) * 2007-12-11 2013-11-13 等熵有限公司 Valve

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