GB568811A - Improvements relating to apparatus for producing foam for fire extinguishing purposes - Google Patents

Improvements relating to apparatus for producing foam for fire extinguishing purposes

Info

Publication number
GB568811A
GB568811A GB1375243A GB1375243A GB568811A GB 568811 A GB568811 A GB 568811A GB 1375243 A GB1375243 A GB 1375243A GB 1375243 A GB1375243 A GB 1375243A GB 568811 A GB568811 A GB 568811A
Authority
GB
United Kingdom
Prior art keywords
rod
branch pipe
valve
oil
tank
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
GB1375243A
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.)
Pyrene Co Ltd
Original Assignee
Pyrene Co 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 Pyrene Co Ltd filed Critical Pyrene Co Ltd
Priority to GB1375243A priority Critical patent/GB568811A/en
Publication of GB568811A publication Critical patent/GB568811A/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C31/00Delivery of fire-extinguishing material
    • A62C31/005Delivery of fire-extinguishing material using nozzles

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

568,811. Valves. PYRENE CO., Ltd., and HUNTER, J. N. Aug. 23, 1943, No. 13752. [Class 135] [Also in Group XXI] Backward flow of oil from an oil storage tank 1, Fig. 1, through the air inlet 17 of a branch pipe 9 for producing air foam for fireextinguishing connected thereto, is prevented by an automatic non-return valve incorporated in the branch pipe. Fire risk is thus reduced in the event of a failure or reduction in pressure of the foam supply to the tank through the coupling 7 and pipe 2 by which the oil is fed to and withdrawn from the tank. A non- return valve, comprising a ball 18, Fig. 3, mounted in a cage 19, is mounted in a throat 14 in the branch pipe 9 and is moved, if it sticks, by a handle 27, which rocks a rod 21 journalled in openings in the wall of the flaring port 15. A rod 20 projects into the cage and depends from the rod 21 to move the ball 18 when the handle is operated. In another arrangement, Fig. 5, the valve is in the form of a clack valve 28 pivotally mounted at 29 in an offset part 36 of the wall of the branch pipe, and preferably at the end of the flaring port 15. In a further form, Fig. 6, a clack valve 28 has a rod 33 pivoted in bearing and to which is keyed a cranked lever 32 by operating which, by rod 35 having a lost motion connection therewith, the clack valve may be moved. Specifications 403,291 and 568,658, [both in Group XXI], are referred to in the Provisional Specification.
GB1375243A 1943-08-23 1943-08-23 Improvements relating to apparatus for producing foam for fire extinguishing purposes Expired GB568811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1375243A GB568811A (en) 1943-08-23 1943-08-23 Improvements relating to apparatus for producing foam for fire extinguishing purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1375243A GB568811A (en) 1943-08-23 1943-08-23 Improvements relating to apparatus for producing foam for fire extinguishing purposes

Publications (1)

Publication Number Publication Date
GB568811A true GB568811A (en) 1945-04-20

Family

ID=10028719

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1375243A Expired GB568811A (en) 1943-08-23 1943-08-23 Improvements relating to apparatus for producing foam for fire extinguishing purposes

Country Status (1)

Country Link
GB (1) GB568811A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3475333A (en) * 1967-11-01 1969-10-28 Nat Foam System Inc Fire extinguishing
US4148361A (en) * 1977-05-20 1979-04-10 Phillips Petroleum Company Foam delivery system for a floating roof tank
US5464065A (en) * 1993-02-22 1995-11-07 Valkyrie Scientific Proprietary, L.C. Method for extinguishing tank fires

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3475333A (en) * 1967-11-01 1969-10-28 Nat Foam System Inc Fire extinguishing
US4148361A (en) * 1977-05-20 1979-04-10 Phillips Petroleum Company Foam delivery system for a floating roof tank
US5464065A (en) * 1993-02-22 1995-11-07 Valkyrie Scientific Proprietary, L.C. Method for extinguishing tank fires

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