WO2004072388A3 - Backflow prevention system - Google Patents

Backflow prevention system Download PDF

Info

Publication number
WO2004072388A3
WO2004072388A3 PCT/US2004/003434 US2004003434W WO2004072388A3 WO 2004072388 A3 WO2004072388 A3 WO 2004072388A3 US 2004003434 W US2004003434 W US 2004003434W WO 2004072388 A3 WO2004072388 A3 WO 2004072388A3
Authority
WO
WIPO (PCT)
Prior art keywords
prevention system
backflow prevention
backflow
water distribution
fire hydrant
Prior art date
Application number
PCT/US2004/003434
Other languages
French (fr)
Other versions
WO2004072388A2 (en
Inventor
Anthony P Lafalce
Original Assignee
Anthony P Lafalce
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 Anthony P Lafalce filed Critical Anthony P Lafalce
Publication of WO2004072388A2 publication Critical patent/WO2004072388A2/en
Publication of WO2004072388A3 publication Critical patent/WO2004072388A3/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
    • E03C1/104—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves using a single check valve
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B9/00—Methods or installations for drawing-off water
    • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
    • E03B9/16—Devices for retaining foreign matter, e.g. sand
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/006—Construction of housing; Use of materials therefor of hydrants
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Domestic Plumbing Installations (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Safety Valves (AREA)
  • Float Valves (AREA)

Abstract

A backflow prevention system that helps prevent contamination of potable water distribution systems from backflow at fire hydrant connections.
PCT/US2004/003434 2003-02-06 2004-02-06 Backflow prevention system WO2004072388A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US44520003P 2003-02-06 2003-02-06
US60/445,200 2003-02-06
US41080404A 2004-02-05 2004-02-05
USP04108 2004-02-05

Publications (2)

Publication Number Publication Date
WO2004072388A2 WO2004072388A2 (en) 2004-08-26
WO2004072388A3 true WO2004072388A3 (en) 2005-01-13

Family

ID=32871689

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/003434 WO2004072388A2 (en) 2003-02-06 2004-02-06 Backflow prevention system

Country Status (1)

Country Link
WO (1) WO2004072388A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7775231B2 (en) 2002-12-04 2010-08-17 Davidson Hydrant Technologies, Inc. Retrofitting a fire hydrant with a replacement hydrant body containing a secondary valve
US7575017B2 (en) 2006-10-06 2009-08-18 Davidson Hydrant Technologies, Inc. Wet barrel fire hydrant system with second valve
US20080245420A1 (en) * 2007-04-09 2008-10-09 Tom Randy Davidson Nozzle Attachment for Fire Hydrant

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1601993A (en) * 1925-06-22 1926-10-05 Edward L Rick Hydrant

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1601993A (en) * 1925-06-22 1926-10-05 Edward L Rick Hydrant

Also Published As

Publication number Publication date
WO2004072388A2 (en) 2004-08-26

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