US3220483A - Alarm valve for a sprinkler installation - Google Patents

Alarm valve for a sprinkler installation Download PDF

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Publication number
US3220483A
US3220483A US255878A US25587863A US3220483A US 3220483 A US3220483 A US 3220483A US 255878 A US255878 A US 255878A US 25587863 A US25587863 A US 25587863A US 3220483 A US3220483 A US 3220483A
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US
United States
Prior art keywords
valve
conduit
main
sprinkler
pipe
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Expired - Lifetime
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US255878A
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English (en)
Inventor
Hoevenaar Hendrik Nico Ludolph
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Saval Apparatenfabriek CV
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Saval Apparatenfabriek CV
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00—Watering gardens, fields, sports grounds or the like
    • A01G25/16—Control of watering
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A62C35/60—Pipe-line systems wet, i.e. containing extinguishing material even when not in use
    • A62C35/605—Pipe-line systems wet, i.e. containing extinguishing material even when not in use operating and sounding alarm automatically
    • 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
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0066—Hydraulic or pneumatic means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/1842—Ambient condition change responsive
    • Y10T137/1939—Atmospheric
    • Y10T137/1963—Temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7737—Thermal responsive

Definitions

  • the invention relates to an alarm valve for a sprinkler installation comprising a valve body, resting on a seat, in the pipe leading to the sprinklers, which valve body, when the liquid flows towards one or more sprinklers, is lifted off its seat by this flow and in its closed position shuts off the opening of an alarm device to be operated by the liquid.
  • Alarm valves of this kind are commonly known and form an essential part of sprinkler installations, intended to give a warning signal when one or more sprinklers become operative owing to the outbreak of a fire.
  • the liquid starts to flow and the valve body is lifted off its seat, while at the same time liquid can flow into the pipe leading to the alarm device, in consequence of which the latter is actuated.
  • the object of the invention to provide an alarm valve which can be used for a dry system as Well as for a wet system, and this object is achieved according to the invention by the valve in its closed position shutting off a third opening which can be connected, via a cock that can be adjusted in different positions, either with the alarm device or with the liquid contents of the installation. Because this valve shuts off, besides the pipe leading to the sprinklers and the opening towards ice the alarm device, also the third opening, it has a surface area which is considerably larger than the cross-sectional area of the liquid supply pipe. When the installation is changed over to the dry system therefore the area subject to the pressure of the air is considerably larger than the area subject to the pressure of the liquid, so that a small air pressure will suffice.
  • the adjustable cock is then in a position in which, like the connection previously present, it can provide for a connection with the alarm device.
  • the valve is opened and the installation is further filled with liquid, this liquid now flowing via the said opening of the alarm device as well as via the said third opening to the alarm device and actuating the latter.
  • this third opening has been connected with the liquid contents of the installation, which means at the same time that the pressure of the liquid contents is present at the site of this opening and causes a pressure compensation, so that the difference between the areas subject to the water pressure above and below the valve body is now only small.
  • connection of the third opening with the liquid contents can be effected according to the invention via a branch of the liquid supply pipe at a point ahead of the said valve, which branch may be furnished with another valve.
  • the connection of this third opening with the liquid supply pipe may be direct and this connection may also be brought about with the space behind the said valve, since the only important thing is that the pressure of the liquid should act upon the underside of the said valve at the site of the third opening.
  • the other valve in the branch is required to make possible a change-over to the dry system. If the connection of the adjustable cock with the liquid contents is effected by causing this connection to end in the space behind the other valve, it is advisable to couple the adjustable cock and the other valve together, so that they can be operated simultaneously.
  • this non-return valve may be fitted in the branch of the supply pipe leading to the third opening, so that pressure compensation can take place 'via this branch leading to the third opening and thence Via the adjustable cock to the space behind the valve.
  • the branch of the supply pipe may have a connection with the pipe leading to the alarm device, in which case a valve is present at the site of this connection.
  • FIGURE 1 is a longitudinal section of the alarm valve according to the invention.
  • FIGURE 2 is a diagram of the alarm valve with acessory switching members according to the invention in the position for the dry system.
  • FIGURE 3 shows the same diagram as FIGURE 2 in the position for the wet system.
  • the alarm valve illustrated in FIGURE 1 comprises a casing 1, on the lower side of which is the opening 2 for the connection to. the water supply and which at 3 has a discharge opening for connection to the pipe leading to the sprinklers.
  • the casing 1 has a lid 4, through which passes the valve 5 by means of the stem 6. This valve can be locked by means of a locking mechanism 7 in the uppermost position, so as to ensure that the valve remains in the opened position once it has been placed in this position by the flow of the liquid.
  • On the underside the valve body 5 has a rubber diaphragm 8, which forms the sealing member proper.
  • this rubber diaphragm 8 shuts off not only the opening 2 of the water supply, but also the chambers 9 and 10, which end via annular openings in the sealing surface of the valve.
  • the opening 2 and easing 1 are furthermore provided with the connections 11, 12 and 13, the purpose of which will become evident from the description of FIGURES 2 and 3 below.
  • FIGURE 2 is a diagrammatic illustration of the alarm valve according to the invention, viz. in the position in Which air under pressure is present above the valve.
  • the water supply is designated by 2 again and in this water supply a main valve 14 is present.
  • This supply is shut ofi by the rubber diaphragm 8, which also extends over the chambers 9 and 10.
  • the chamber 9 is connected in the conventional way via the pipes 15, 16 and 17 with an alarm device, which may have the form of a hydraulic motor actuating a bell or gong.
  • the chamber is also connected with the alarm device via the pipe 18, the adjustable cock 19, and the pipes 16 and 17.
  • At 3 the connection with the sprinklers is shown and at 20 there is a wide drain pipe 20 with a valve 21. Pipe 20 communicates with connection 13. Between the cock 19 and the space 22 above the valve 8 there is another pipe 23, which communicates with connection 12.
  • connection 11 a branch of the water supply 2 is shown, in communication with connection 11, which pipe 26 is connected via the valve 27, the non-return valve 28, and the pipe 29 with the chamber 10.
  • the pipe 26 also has a branch 30 leading to a cock 31, which is adapted to bring about a connection with the pipe 17 leading to the alarm device.
  • FIGURE 3 The installation according to FIGURE 3 is similar to that of FIGURE 2, the diiference being that the cock 19 and valve 27 are in a different position.
  • 32 is a discharge pipe with a throttled outlet.
  • FIGURE 2 the installation is shown for the socalled dry system, in which air under pressure is present in the part of the piping behind the alarm valve. the piping behind the alarm valve.
  • This air pressure has to keep the valve 8 on its seats against the pressure of the Water in the supply pipe 2. Because the air acts upon the considerably larger area, a pressure that is lower than the pressure of the water in the pipe 2 will suflice.
  • the valve 8 is lifted off its seat and the liquid emerges from the pipe 2 in the remaining part of a sprinkler installation, while at the same time the liquid flows into the chambers 9 and 10, and via the pipes and 18, 16 and 17 respectively to the alarm device. If it is desired to check in this position whether the alarm device operates properly, this can be done by adjustment of the cock 31, by which water from the pipe 2 is supplied via the branch 26 and 30 to the alarm device. For this pressure of the air therefore need not be lowered.
  • FIGURE 3 shows the position for the so-called wet system, and upon simple comparison it appears at once that the only difference from FIGURE 2. is that the cock 19 and the valve 27 have been adjusted.
  • the valve 27 When the valve 27 is opened, the pressure of the water in the pipe 2 can enter the chamber 10 via 26, 28, 29, while via the pipe 18, cock 19, and pipe 23 a connection has also been brought about with the space above the valve 8. Because the chamber 10 is filled with liquid of the same pressure as in the remainder of the liquid system, above and below the valve 8 the same pressure prevails over the surface area occupied by the opening of the chamber 10, in consequence of which the force that forces the valve in the closed position has been reduced to an extremely low value, so that the certainty has been gained that at a decrease of the pressure the flow of the water is able to open the valve.
  • the alarm device can be tested by adjustment of the cock 31, but it can also be done by adjustment of the valve 25, by which, via the pipe 24 and 23, a pressure drop is brought about in the part of the sprinkler installation behind the valve and thus the opening of a sprinkler is initiated.
  • the drain pipe 20 with valve 21 is required to empty the part above the valve 8, with a view to changing over from the wet to the dry system. In that case first the valve 14 is closed, subsequently the valve 21 is opened, so that the liquid can flow oil, and then the valve 21 is closed again, air under pressure is supplied, and the valve 14 is opened again.
  • the non-return valve 28 ensures that when according to the wet system changes in pressure occur, the rises of pressure in the part 2 of the piping are propagated in the part behind the valve without the valve 8 being opened, which might indeed result in a false alarm. Because the alarm valve according to the invention can be used for the dry as well as for the wet system, checking is simplified considerably. For example, if an increase in pressure is felt in the inlet pipe 2, this increase in pressure is delivered through connection 11, conduit 26, valve 27, one-way valve 23, line 18, cock 19, conduit 23, connection 12 to the space on the opposite side of valve 8. This equalization of pressure prevents communication between compartments 9 and 10 and the inlet pipe 2 so that false alarms are prevented. Moreover, if there is a sudden decrease in pressure in the input line 2, oneway valve 23 immediately closes so that no Water is drained from the space above valve 8.
  • a sprinkler system comprising a main inlet conduit connected to a source of extinguishing liquid under pressure, sprinkler heads located in the area to be protected, a main control valve actuated by the opening of said sprinkler heads, main sprinkler conduit means connecting said main control valve to said sprinklers, an alarm device and a discharge outlet; said main control valve having a casing including a main inlet port connected to said main inlet conduit, a main outlet port connected to said main sprinkler conduit means and first and sec ond ports; valve means within said casing for normally sealing said main inlet port and first and second ports when in a closed position and for enabling said first and second ports to communicate with said main inlet port when in an open position; a first conduit connected between said first port and the alarm device; said casing further defining a space on the opposite side of said valve means from said main inlet port; said space communicating with said main outlet port; said space further communicating with said main inlet port when said valve means is in an open position; a second conduit having one end connected to said second port;
  • a sprinkler system as set forth in claim 2, wherein said one-way valve means comprises a two-way valve adapted to assume an on and oh. position and a oneway, non-return valve in series with said two-way valve.
  • a sprinkler system as set forth in claim 2 further comprising a conduit having one end connected to said space, an on-and-off test valve having one side connected to the other end of said last-mentioned conduit, and a drain connected to the other side of said on-and-oif test valve.

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  • 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)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
US255878A 1962-02-13 1963-02-04 Alarm valve for a sprinkler installation Expired - Lifetime US3220483A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL274740 1962-02-13

Publications (1)

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US3220483A true US3220483A (en) 1965-11-30

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US255878A Expired - Lifetime US3220483A (en) 1962-02-13 1963-02-04 Alarm valve for a sprinkler installation

Country Status (4)

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US (1) US3220483A (ja)
DE (1) DE1434955A1 (ja)
GB (1) GB999071A (ja)
NL (1) NL274740A (ja)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788400A (en) * 1973-05-07 1974-01-29 Pyrotector Inc Fire extinguishing system and valve for use therewith
US6578602B1 (en) * 2001-08-10 2003-06-17 Automatic Fire Control, Incorporated Alarm valve system
US20040011537A1 (en) * 2002-05-17 2004-01-22 Jackson Eldon D. Fire protection valve trim assembly system
WO2015066710A3 (en) * 2013-11-04 2015-06-25 Tyco Fire Products Lp Integrated fluid control valve and valve actuator assembly
CN105828889A (zh) * 2013-11-04 2016-08-03 泰科消防产品有限合伙公司 一体化流体控制阀和阀致动器组件
WO2016179406A1 (en) * 2015-05-06 2016-11-10 Tyco Fire Products Lp Integrated fluid control valve and valve actuator assembly
US10286335B2 (en) 2013-09-12 2019-05-14 Gradiant Corporation Systems including a condensing apparatus such as a bubble column condenser
US10294123B2 (en) 2016-05-20 2019-05-21 Gradiant Corporation Humidification-dehumidification systems and methods at low top brine temperatures
US10513445B2 (en) 2016-05-20 2019-12-24 Gradiant Corporation Control system and method for multiple parallel desalination systems
US20220170567A1 (en) * 2020-03-06 2022-06-02 Guangdong Yongquan Valve Technology Co., Ltd Valve structure with built-in valve seat of pre-action warning valve

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5297635A (en) * 1988-09-21 1994-03-29 Back-Flo Alarm Valve Co., Inc. Combined alarm and back-flow prevention arrangement for fire suppression sprinkler system
US6675110B2 (en) 2002-01-15 2004-01-06 Watts Regulatoryco. Testing valve assemblies
WO2012112808A2 (en) * 2011-02-16 2012-08-23 Tyco Fire Products Lp Dry pilot actuator
EP3556439A1 (en) * 2011-02-16 2019-10-23 Tyco Fire Products LP Dry pipe valve & system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US868624A (en) * 1907-04-24 1907-10-15 Minor C Peter Automatic sprinkler system.
US876869A (en) * 1904-12-31 1908-01-14 Globe Automatic Sprinkler Company Wet-pipe alarm-valve.
GB255783A (en) * 1926-04-19 1926-07-29 Edmund Lawrence Moore Improvements in and relating to alarm valves for sprinkler systems
GB318049A (en) * 1928-11-06 1929-08-29 Automatic Sprinkler Co Improvements in or relating to fire-extinguishing sprinkler systems and more particularly to automatic alarm apparatus therefor
US1933214A (en) * 1931-10-26 1933-10-31 Halford Marion Eugene Automatic sprinkler system-alarm valve
US1958284A (en) * 1931-08-10 1934-05-08 Tyden Emil Fire extinguishing apparatus
US2003884A (en) * 1933-02-02 1935-06-04 Halford Marion Eugene Control valve for automatic sprinkler systems
US2558175A (en) * 1947-02-03 1951-06-26 Russell W Gieseler Fire protection automatic sprinkler system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US876869A (en) * 1904-12-31 1908-01-14 Globe Automatic Sprinkler Company Wet-pipe alarm-valve.
US868624A (en) * 1907-04-24 1907-10-15 Minor C Peter Automatic sprinkler system.
GB255783A (en) * 1926-04-19 1926-07-29 Edmund Lawrence Moore Improvements in and relating to alarm valves for sprinkler systems
GB318049A (en) * 1928-11-06 1929-08-29 Automatic Sprinkler Co Improvements in or relating to fire-extinguishing sprinkler systems and more particularly to automatic alarm apparatus therefor
US1958284A (en) * 1931-08-10 1934-05-08 Tyden Emil Fire extinguishing apparatus
US1933214A (en) * 1931-10-26 1933-10-31 Halford Marion Eugene Automatic sprinkler system-alarm valve
US2003884A (en) * 1933-02-02 1935-06-04 Halford Marion Eugene Control valve for automatic sprinkler systems
US2558175A (en) * 1947-02-03 1951-06-26 Russell W Gieseler Fire protection automatic sprinkler system

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788400A (en) * 1973-05-07 1974-01-29 Pyrotector Inc Fire extinguishing system and valve for use therewith
US6578602B1 (en) * 2001-08-10 2003-06-17 Automatic Fire Control, Incorporated Alarm valve system
US20040011537A1 (en) * 2002-05-17 2004-01-22 Jackson Eldon D. Fire protection valve trim assembly system
US6848513B2 (en) * 2002-05-17 2005-02-01 The Viking Corporation Fire protection valve trim assembly system
US10286335B2 (en) 2013-09-12 2019-05-14 Gradiant Corporation Systems including a condensing apparatus such as a bubble column condenser
US10653906B2 (en) 2013-11-04 2020-05-19 Tyco Fire Products Lp Integrated fluid control valve and valve actuator assembly
WO2015066710A3 (en) * 2013-11-04 2015-06-25 Tyco Fire Products Lp Integrated fluid control valve and valve actuator assembly
KR20160085791A (ko) * 2013-11-04 2016-07-18 타이코 파이어 프로덕츠 엘피 일체형 유체 제어 밸브 및 밸브 액추에이터 조립체
CN105828889A (zh) * 2013-11-04 2016-08-03 泰科消防产品有限合伙公司 一体化流体控制阀和阀致动器组件
CN105828889B (zh) * 2013-11-04 2020-10-23 泰科消防产品有限合伙公司 一体化流体控制阀和阀致动器组件
AU2018229719B2 (en) * 2013-11-04 2020-06-04 Tyco Fire Products Lp Integrated fluid control valve and valve actuator assembly
CN108025201B (zh) * 2015-05-06 2020-09-01 泰科消防产品有限合伙公司 集成的流体控制阀和阀致动器的组件
US10471287B2 (en) 2015-05-06 2019-11-12 Tyco Fire Products Lp Integrated fluid control valve and valve actuator assembly
CN108025201A (zh) * 2015-05-06 2018-05-11 泰科消防产品有限合伙公司 集成的流体控制阀和阀致动器的组件
WO2016179406A1 (en) * 2015-05-06 2016-11-10 Tyco Fire Products Lp Integrated fluid control valve and valve actuator assembly
US11612776B2 (en) 2015-05-06 2023-03-28 Tyco Fire Products Lp Integrated fluid control valve and valve actuator assembly
US10513445B2 (en) 2016-05-20 2019-12-24 Gradiant Corporation Control system and method for multiple parallel desalination systems
US10294123B2 (en) 2016-05-20 2019-05-21 Gradiant Corporation Humidification-dehumidification systems and methods at low top brine temperatures
US20220170567A1 (en) * 2020-03-06 2022-06-02 Guangdong Yongquan Valve Technology Co., Ltd Valve structure with built-in valve seat of pre-action warning valve
US11766580B2 (en) * 2020-03-06 2023-09-26 Guangdong Yongquan Valve Technology Co., Ltd Valve structure with built-in valve seat of pre-action warning valve

Also Published As

Publication number Publication date
GB999071A (en) 1965-07-21
DE1434955A1 (de) 1968-11-07
NL274740A (ja) 1900-01-01

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