US3587746A - Sprinkler alarm valve - Google Patents

Sprinkler alarm valve Download PDF

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Publication number
US3587746A
US3587746A US784577A US3587746DA US3587746A US 3587746 A US3587746 A US 3587746A US 784577 A US784577 A US 784577A US 3587746D A US3587746D A US 3587746DA US 3587746 A US3587746 A US 3587746A
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US
United States
Prior art keywords
alarm
valve
clack
port
sealing member
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 - Lifetime
Application number
US784577A
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English (en)
Inventor
Douglas Michael Venison
George Allen
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.)
MATTHEW HALL MECHANICAL SERVIC
Original Assignee
MATTHEW HALL MECHANICAL SERVIC
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 MATTHEW HALL MECHANICAL SERVIC filed Critical MATTHEW HALL MECHANICAL SERVIC
Application granted granted Critical
Publication of US3587746A publication Critical patent/US3587746A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • SHEET 2 OF 3 SPRINKLER ALARM VALVE This invention relates to alarm valves for sprinkler systems of the kind known as alternate sprinkler installations.
  • Alternate sprinkler installations are used when there is a danger of water in the sprinkler pipes becoming frozen under winter conditions, and during this period it is desirable to drain the system and pressurize it with air.
  • an alarm valve mechanism for controlling delivery of fluid to a sprinkler system and being optionally settable for operation in either dry pipe systems or wet pipe systems, comprising a valve body having'a valve opening and an alarm port, a clack hingedly mounted within the body to effect closure of the opening and the alarm port, a lever system operatively cooperating with the clack, and control means operatively associated with the lever systems and operable to hold the lever system in an operativeposition where it engages the clack in the dry state of the system and to hold the lever system in an inoperative position where it leaves the clack free in the wet state of the system, wherein the valve opening and the alarm port are provided with seating faces which cooperate with the clack, said seating faces being concentric with one another and being arranged in the same, or substantially the same, plane.
  • FIG. 1 is a cross section through an alarm valve according to the invention
  • FIG. 2 is a corresponding side elevation
  • FIG. 3 is a section on the line 3-3 of FIG. 1.
  • the alarm valve comprises a castiron body 1 having a flanged inlet 2 for connection to a water supply pipe and a flanged outlet 3 for connection to the sprinkler system.
  • the body 1 also has an access opening 4 which is normally closed by a closure plate 5 secured to the body by means of bolts 6.
  • a clack 7 provided on its underside with a circular sealing member 8 is hingedly mounted within the body 1 on a spindle 9journaled in bearings 10, 11.
  • the sealing member 8 of the clack 7 is arranged to bear on an annular seating 12 positioned in the valve opening 13.
  • the seating 12 is formed with an upwardly inclined pointed edge which engages the sealing member 8 and provides knife-edge contact. This has the advantage that the minimum bearing area is required to effect sealing and thus leaves the maximum area which can be acted upon by the water pressure.
  • the hinged arms 14 of the clack 7 are formed with elongated holes 15 thereby giving the clack limited freedom of movement so that it rests squarely on the sealing 'ring 12.
  • the sealing member 8 which is secured to the underside of the clack 7 by means of a retaining ring 16 and screw bolts 17, is also arranged to enter into engagement with, and to seal, the open end of an alarm port seating member 18.
  • the annular sealing edges of the annular seating 12 and the seating member 18 are on the same, or substantially the same, horizontal plane.
  • the alarm port seating member 18 is provided to be integral with the annular seating 12 and is mounted concentrically therewith by means of radially disposed spokes 19.
  • One end of a bent coupling 20 is screwed into the member 18, the other end of said coupling being connected to one end of a straight copper pipe section 21 by means of a compression joint 22.
  • the other end of the pipe section 21 is sealed in the body 1 by means of a boss 23 and an O-ring 24 under compression.
  • the underside of the clack 7 is formed at a position adjacent the member 18 with a circular recess 25 and the sealing member 8 is provided, on a circle which is of greater diameter than the seating area of the member 18 and of smaller diameter than the inner periphery of the retaining ring 16, with a plurality of spaced holes 26 which provide communication between the inlet 2 and the recess 25.
  • the clack 7 is held in engagement with the seating 12 and the alarm port member 18 by a lever 27 which is pivoted on a spindle 28 arranged adjacent the opening 13 in a position which is diametrically opposite that of the spindle 9.
  • the lever 27 is in turn held in a horizontal position by means of a second lever 29 which is pivoted on the spindle 9.
  • the second lever 29 is held down by means of a crank lever 30 mounted on a shaft 31 which extends through a bearing assembly mounted in the wall ofthe valve body 1.
  • the shaft 31 is coupled to known means incorporating a trigger mechanism, and generally indicated at 32, for controlling the crank lever 30 to retain the clack 7 in an open or closed position and for controlling the operation of the valve.
  • the valve body 1 is also provided with ports 33 and 34, the port 33 being used for testing the alarm system in the wet state and the port 34 being used for testing the alarm system in the dry state.
  • valve In use, the valve is connected between the water supply pipe and the sprinkler system and is adaptable for use when the sprinkler system is to be operated in a dry state or in a wet state.
  • the clack 7 In the dry state, the clack 7 is in the position shown in FIG. 1 where the sealing member 8 is in engagement with the seating 12 and the alarm port 18 to close the valve opening 13 and the alarm port.
  • the levers 27 and 29 are in a horizontal position where they hold the clack 7 in its closed position and the crank lever 30 is in a horizontal position where it engages the free end of the lever 29 under the control of the control means 32.
  • the valve In this position the valve is primed, it being understood that the sprinkler system is filled with pressurized air and that the inlet 2 is open to the water supply pressure.
  • the crank lever 30 In the event of the air pressure in the system being released, normally by the actuation of a sprinkler head, the crank lever 30 will, via the control means 32, be caused to turn and to release the lever 29.
  • the water pressure in the inlet 2 will cause pivotal movement of the clack 7 and the levers 27 and 29 move them into the position shown in dot-dash lines in FIG. 1 and thereby allow water to pass into the sprinkler system. At the same time water will pass into the alarm port member 18 and will cause operation of the alarm system.
  • the levers 27 and 29 are held in the position shown in dot dash lines in FIG. 1 by means of the crank lever 30 engaging the projection 35 on the lever 27.
  • the crank lever 30 is held in its operative position under the action of the control means 32.
  • the clack 7 in this case remains, by virtue ofits weight, in its closed position where it seals the alarm port 18.
  • the invention provides a simple and efficient alarm valve which can be used in an alternate sprinkler system both in the wet and in the dry state. Furthermore the use of a single clack having a single sealing member for the valve opening and for the alarm port, leads to easier repairs and maintenance.
  • the valve according to the invention is an improvement over the valve of our prior US. Pat. No. 3,098,527, granted July 23, 1963, and has the advantage that:
  • the sealing faces of the seating ring 12 and the alarm port member 18 are in the same plane and therefore can be accurately machined together in one operation.
  • An alarm valve mechanism for controlling delivery of fluid to a sprinkler system and being optionally settable for operation in either dry pipe systems or wet pipe systems, com
  • valve body having a valve opening and an alarm port, a clack hingedly mounted within said body to effect closure of said valve opening and said alarm port, a lever system operatively associated with said clack, and control means operatively associated with said lever system and operable to hold said lever system in an operative position where it engages said clack in the dry state of the system and to hold said lever system in an inoperative position where it leaves said clack free in the wet state of the system
  • said valve further comprises a seating face on said valve opening, a seating face on said alarm port, and a sealing member provided on said clack to close said valve opening and said alarm port, said seating faces being concentric with one another and being arranged in the same horizontal plane, said clack being formed on its face adjacent said alarm port with a circular recess and said sealing member being formed with one or more spaced holes to provide communication between the inlet side of said valve and said circular recess whereby, in use, in the area of said alarm port a pressure differential exists on opposite
  • said alarm port comprises part of an alarm port assembly consisting of an alarm port seating member arranged integral with said valve opening seating, a bent coupling attached to one end of said alarm port seating member, and a straight pipe section extending between said bent coupling and an opening in said valve body.

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)
US784577A 1968-10-21 1968-12-18 Sprinkler alarm valve Expired - Lifetime US3587746A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB49878/68A GB1195310A (en) 1968-10-21 1968-10-21 Improved Sprinkler Alarm Valve

Publications (1)

Publication Number Publication Date
US3587746A true US3587746A (en) 1971-06-28

Family

ID=10453868

Family Applications (1)

Application Number Title Priority Date Filing Date
US784577A Expired - Lifetime US3587746A (en) 1968-10-21 1968-12-18 Sprinkler alarm valve

Country Status (5)

Country Link
US (1) US3587746A (pl)
BE (1) BE726186A (pl)
DE (1) DE1816878A1 (pl)
GB (1) GB1195310A (pl)
NL (1) NL6818469A (pl)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5048552A (en) * 1990-06-28 1991-09-17 Bourne Douglas A Universal trip valve operators and trip actuating seismic vibration sensors and transducers therefor
US5295503A (en) * 1992-10-02 1994-03-22 Central Sprinkler Corporation Modular valve for a building standpipe
US6068057A (en) * 1998-05-15 2000-05-30 Reliable Automatic Sprinkler Co., Inc. Dry pipe valve system
RU180245U1 (ru) * 2017-12-21 2018-06-06 Закрытое акционерное общество "Производственное объединение "Спецавтоматика" Клапан сигнальный с дисковым затвором

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5048552A (en) * 1990-06-28 1991-09-17 Bourne Douglas A Universal trip valve operators and trip actuating seismic vibration sensors and transducers therefor
US5295503A (en) * 1992-10-02 1994-03-22 Central Sprinkler Corporation Modular valve for a building standpipe
US5439028A (en) * 1992-10-02 1995-08-08 Central Sprinkler Corporation Modular valve for a building standpipe
US6068057A (en) * 1998-05-15 2000-05-30 Reliable Automatic Sprinkler Co., Inc. Dry pipe valve system
RU180245U1 (ru) * 2017-12-21 2018-06-06 Закрытое акционерное общество "Производственное объединение "Спецавтоматика" Клапан сигнальный с дисковым затвором

Also Published As

Publication number Publication date
GB1195310A (en) 1970-06-17
NL6818469A (pl) 1970-04-23
BE726186A (pl) 1969-06-27
DE1816878A1 (de) 1970-07-02

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