GB2206671A - Valves for fire extinguishers - Google Patents

Valves for fire extinguishers Download PDF

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Publication number
GB2206671A
GB2206671A GB08714983A GB8714983A GB2206671A GB 2206671 A GB2206671 A GB 2206671A GB 08714983 A GB08714983 A GB 08714983A GB 8714983 A GB8714983 A GB 8714983A GB 2206671 A GB2206671 A GB 2206671A
Authority
GB
United Kingdom
Prior art keywords
valve
seat
passage
ball
cage
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.)
Granted
Application number
GB08714983A
Other versions
GB2206671B (en
GB8714983D0 (en
Inventor
Richard Arbuthnot
John Pickering
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.)
METALRAX GROUP PLC
Original Assignee
METALRAX GROUP PLC
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 METALRAX GROUP PLC filed Critical METALRAX GROUP PLC
Priority to GB8714983A priority Critical patent/GB2206671B/en
Publication of GB8714983D0 publication Critical patent/GB8714983D0/en
Publication of GB2206671A publication Critical patent/GB2206671A/en
Application granted granted Critical
Publication of GB2206671B publication Critical patent/GB2206671B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/14—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with ball-shaped valve member
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
    • A62C13/62—Portable extinguishers which are permanently pressurised or pressurised immediately before use with a single permanently pressurised container
    • A62C13/64—Portable extinguishers which are permanently pressurised or pressurised immediately before use with a single permanently pressurised container the extinguishing material being released by means of a valve
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
    • A62C13/76—Details or accessories

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)

Abstract

A fire extinguisher valve has a ball held on a seat by a closing spring, the seat being formed by the intersection of smaller and larger diameter coaxial passages, the ball and spring being located by a cage in the larger passage, the smaller passage locating an operating member for opening the valve. <IMAGE>

Description

Valves for Fire Extinguishers This invention relates to valves for fire extinguishers of the kind comprising a closure member held on its seat by a spring, and an axially displaceable plunger for lifting the member off the seat for example to allow the fire extinguishing liquid or foam to pass through the valve to a nozzle or the like. Existing designs of such valves consist of a large number of parts, many of which are of critical dimensions, and consequently they are expensive to produce. The object of the invention is to provide a better and cheaper valve.
In accordance with the invention a fire extinguisher valve has a valve seat formed by the intersection of large and small coaxial passages, the large passage having a cage which retains and locates a ball and a helical compression spring which urges said ball onto said seat, said small passage locating an operating plunger for displacing the ball off the seat, and said small passage intersecting an outlet passage which allows flow via the cage and seat when the ball is so displaced.
Preferably the cage is made as a plastics moulding and is screw engaged with the body of the valve.
The invention is more particularly described with reference to the accompanying drawing wherein Figure 1 is a sectional elevation of a valve according to the invention taken on the line B-B of Figure 2; and Figure 2 is a part-sectional plan.
Referring to the drawings, the valve body has a through bore of which the upper part is a small diameter passage and the lower part is a large diameter passage.
The latter is screwthreaded. The shoulder between the vtwo portions of the passage is planar to provide a valve seat around the intersection. A ball can close the seat and is held in the closed position by an helical spring.
The ball is located in a cage which is externally screwthreaded to engage in the large passage, and has a fluted axially extending bore, so as to locate the ball for axial movement but provide passages permitting flow past the ball, particularly when it is off the seat. The cage has an internal shoulder to form an end abutment for the spring but leaving an axial port through the shoulder for flow, for example via an inlet pipe.
The cage communicates with a lateral port in the body for connection to a pressure gauge (at X).
The operating plunger is a slide fit in the smaller passage and is sealed by FLOUR ring. The plunger has a narrow stem extending past the radial outlet port which opens laterally from the small passage, and the stem is to contact the ball to displace it off its seat when moved for example by a hand lever pivoted on the body.
It will be seen that the valve has very few parts.
The cage may be made as a plastics moulding. The seat needs to be square and true, but otherwise the tolerances are all generous making the valve particularly economic to manufacture and assemble.

Claims (5)

1. A fire extinguisher valve having a valve seat formed by the intersection of large and small coaxial passages, the large passage housing a cage which retains and locates a ball and a helical compression spring which urges the ball onto the seat, said small passage locating an operating member for displacing the ball off the seat, and said small passage intersecting an outlet passage allowing flow via the cage and seat when the ball is so displaced.
2. A valve as claimed in claim 1 wherein the cage is screw engaged with a body of the valve.
3. A valve as claimed in claim 1 or claim 2 wherein the cage is axially waisted and radially ported to communicate internal fluid pressures to a port in the body.
4. A valve as claimed in claim 1 wherein the said member has a larger diameter portion which is sealed in the small passage by an 1O" ring and a portion of small cross-sectional area extending between the outlet passage and the seat to allow fluid flow in the small passage.
5. A valve for a fire extinguisher substantially as described.
GB8714983A 1987-06-26 1987-06-26 Valves for fire extinguishers Expired - Fee Related GB2206671B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8714983A GB2206671B (en) 1987-06-26 1987-06-26 Valves for fire extinguishers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8714983A GB2206671B (en) 1987-06-26 1987-06-26 Valves for fire extinguishers

Publications (3)

Publication Number Publication Date
GB8714983D0 GB8714983D0 (en) 1987-08-05
GB2206671A true GB2206671A (en) 1989-01-11
GB2206671B GB2206671B (en) 1991-03-13

Family

ID=10619594

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8714983A Expired - Fee Related GB2206671B (en) 1987-06-26 1987-06-26 Valves for fire extinguishers

Country Status (1)

Country Link
GB (1) GB2206671B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001029458A1 (en) * 1999-10-15 2001-04-26 Biggers Patricia Colburn Valve sealing means
ES2155318A1 (en) * 1998-02-05 2001-05-01 Gonzalez Salmeron Mercedes Fire extinguisher head.
AU761379B2 (en) * 1999-10-15 2003-06-05 Biggers Investments Pty Ltd Valve sealing means
JP2010200818A (en) * 2009-02-27 2010-09-16 Hatsuta Seisakusho Co Ltd Safety plug for fire extinguisher and fire extinguisher

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105169583A (en) * 2015-08-03 2015-12-23 兰州空间技术物理研究所 Fire extinguisher suitable for microgravity environment

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB251811A (en) * 1925-07-20 1926-05-13 William Phin Reid Improvements in steam traps
GB285853A (en) * 1927-02-23 1928-11-08 Henry Wardlaw Improvements in, and relating to, water cocks and taps
GB511568A (en) * 1939-01-11 1939-08-21 T & T Vicars Ltd Improvements in taps or valves
GB557199A (en) * 1943-02-05 1943-11-09 George Francis Wodehouse Improvements in sprays for paint, distemper and the like
GB574825A (en) * 1944-01-24 1946-01-22 Field Aircraft Instr & Equipme Improvements relating to valves
GB665740A (en) * 1946-09-28 1952-01-30 Olaer Marine Improvements in or relating to piston and cylinder assemblies
GB851904A (en) * 1957-04-26 1960-10-19 Stewart Warner Corp Fluid pressure relief valve
GB870631A (en) * 1958-01-17 1961-06-14 Hobourn Eaton Mfg Co Ltd Improvements relating to fluid pressure relief valves
GB941901A (en) * 1961-01-09 1963-11-13 Gustin Fils Ets Animal drinking trough
GB1107725A (en) * 1964-06-11 1968-03-27 L C P Engineering Co Ltd Improvements in or relating to fluid flow control valves
GB1120505A (en) * 1965-11-30 1968-07-17 Alkon Products Corp Improvements in check valve mechanism
GB1211474A (en) * 1968-03-13 1970-11-04 Veb Zek Combined selector and control valve unit for hydraulic lifting and lowering devices
GB1391887A (en) * 1973-08-14 1975-04-23 Sno Trik Co Ball check valve
US4073315A (en) * 1977-01-21 1978-02-14 Owatonna Tool Company Valve assembly
GB2095797A (en) * 1981-03-28 1982-10-06 Kugelfischer G Schaefer & Co Electromagnetically operable valve
GB2176267A (en) * 1985-06-07 1986-12-17 Teves Gmbh Alfred Valve

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB251811A (en) * 1925-07-20 1926-05-13 William Phin Reid Improvements in steam traps
GB285853A (en) * 1927-02-23 1928-11-08 Henry Wardlaw Improvements in, and relating to, water cocks and taps
GB511568A (en) * 1939-01-11 1939-08-21 T & T Vicars Ltd Improvements in taps or valves
GB557199A (en) * 1943-02-05 1943-11-09 George Francis Wodehouse Improvements in sprays for paint, distemper and the like
GB574825A (en) * 1944-01-24 1946-01-22 Field Aircraft Instr & Equipme Improvements relating to valves
GB665740A (en) * 1946-09-28 1952-01-30 Olaer Marine Improvements in or relating to piston and cylinder assemblies
GB851904A (en) * 1957-04-26 1960-10-19 Stewart Warner Corp Fluid pressure relief valve
GB870631A (en) * 1958-01-17 1961-06-14 Hobourn Eaton Mfg Co Ltd Improvements relating to fluid pressure relief valves
GB941901A (en) * 1961-01-09 1963-11-13 Gustin Fils Ets Animal drinking trough
GB1107725A (en) * 1964-06-11 1968-03-27 L C P Engineering Co Ltd Improvements in or relating to fluid flow control valves
GB1120505A (en) * 1965-11-30 1968-07-17 Alkon Products Corp Improvements in check valve mechanism
GB1211474A (en) * 1968-03-13 1970-11-04 Veb Zek Combined selector and control valve unit for hydraulic lifting and lowering devices
GB1391887A (en) * 1973-08-14 1975-04-23 Sno Trik Co Ball check valve
US4073315A (en) * 1977-01-21 1978-02-14 Owatonna Tool Company Valve assembly
GB2095797A (en) * 1981-03-28 1982-10-06 Kugelfischer G Schaefer & Co Electromagnetically operable valve
GB2176267A (en) * 1985-06-07 1986-12-17 Teves Gmbh Alfred Valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2155318A1 (en) * 1998-02-05 2001-05-01 Gonzalez Salmeron Mercedes Fire extinguisher head.
WO2001029458A1 (en) * 1999-10-15 2001-04-26 Biggers Patricia Colburn Valve sealing means
EP1230501A1 (en) * 1999-10-15 2002-08-14 Biggers, Patricia Colburn Valve sealing means
AU761379B2 (en) * 1999-10-15 2003-06-05 Biggers Investments Pty Ltd Valve sealing means
EP1230501A4 (en) * 1999-10-15 2004-07-14 Biggers Patricia Colburn Valve sealing means
US6880804B1 (en) 1999-10-15 2005-04-19 John Caleb Wells Biggers Valve sealing means
JP2010200818A (en) * 2009-02-27 2010-09-16 Hatsuta Seisakusho Co Ltd Safety plug for fire extinguisher and fire extinguisher

Also Published As

Publication number Publication date
GB2206671B (en) 1991-03-13
GB8714983D0 (en) 1987-08-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee