GB327436A - Improvements relating to dry-pipe fire-extinguishing sprinkler systems - Google Patents
Improvements relating to dry-pipe fire-extinguishing sprinkler systemsInfo
- Publication number
- GB327436A GB327436A GB3554828A GB3554828A GB327436A GB 327436 A GB327436 A GB 327436A GB 3554828 A GB3554828 A GB 3554828A GB 3554828 A GB3554828 A GB 3554828A GB 327436 A GB327436 A GB 327436A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- valve
- diaphragm
- pressure
- pipe
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/58—Pipe-line systems
- A62C35/64—Pipe-line systems pressurised
- A62C35/645—Pipe-line systems pressurised with compressed gas in pipework
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
327,436. Woosnam, A., (Automatic Sprinkler Co. of America). Dec. 3, 1928. Sprinklers, automatic.-A dry pipe sprinkler system in which the main valve opens as usual in case of a fall of pressure in the distributing pipes consequent upon the opening of a sprinkler head, is provided with means whereby a rise of pressure in the air pipes, or in a supplemental piping in the fire zone, due to heating thereof. will also cause the main valve to open in advance of the opening permitted by the fusion of a sprinkler head. As shown, the casing 3 for the dry-pipe differential valve 4, 5 has a neutral chamber 3<1>, and the air pipe 7 is connected by a pipe 9 to a casing. This consists of two chambers 10, 11 separated by a diaphragm 13 and normally maintained at the same pressure by a " bleeder " device 12. The chamber 3<1> is connected to the chamber 10 by a pipe 20 closed by a valve 19. If the air pipes, such as 7, are heated by a fire before the fusible heads 8 open, the pressure in chamber 10 rises and the diaphragm. is lifted. This opens the valve 19 through a rocker arm 16 and weighted lever 17, allowing air under pressure to pass to the chamber 3<1>, causing the main valve 4, 5 to open. If a head 8 opens first, the pressure in chamber 10 falls and the diaphragm 13 moves down, again opening the valve 19. The air entering chamber 3<1> will now accelerate the normal opening of the main valve. An air pump 22 used for replenishing the pressure in the air pipe system is connected by a pipe 25 to a chamber 26 separated from the chamber 10 by a diaphragm 27 and a valve 31. When the diaphragm 27 is distended by pressure in the chamber 26, it carries forward a rod 28 which opens' the valve 31 by means of a bellcrank 30. The rod 28 also serves to lock the rocker 16 against movement, so that increased pressure at this time in the chamber 10 cannot cause the diaphragm 13 to open the valve 19. An extension 34 carried by the diaphragm 13 serves to prevent the retreat of the rod 28 until the diaphragm is in its normal, central, position. Specifications 326,141, 326,142, and 330,254 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3554828A GB327436A (en) | 1928-12-03 | 1928-12-03 | Improvements relating to dry-pipe fire-extinguishing sprinkler systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3554828A GB327436A (en) | 1928-12-03 | 1928-12-03 | Improvements relating to dry-pipe fire-extinguishing sprinkler systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB327436A true GB327436A (en) | 1930-04-03 |
Family
ID=10378949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3554828A Expired GB327436A (en) | 1928-12-03 | 1928-12-03 | Improvements relating to dry-pipe fire-extinguishing sprinkler systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB327436A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008033325A2 (en) * | 2006-09-12 | 2008-03-20 | Victaulic Company | Method and apparatus for drying sprinkler piping networks |
-
1928
- 1928-12-03 GB GB3554828A patent/GB327436A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008033325A2 (en) * | 2006-09-12 | 2008-03-20 | Victaulic Company | Method and apparatus for drying sprinkler piping networks |
WO2008033325A3 (en) * | 2006-09-12 | 2008-07-10 | Victaulic Co Of America | Method and apparatus for drying sprinkler piping networks |
US7921577B2 (en) | 2006-09-12 | 2011-04-12 | Victaulic Company | Method and apparatus for drying sprinkler piping networks |
US8132629B2 (en) | 2006-09-12 | 2012-03-13 | Victaulic Company | Method and apparatus for drying sprinkler piping networks |
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