WO2006079002A3 - Backflow preventor - Google Patents

Backflow preventor Download PDF

Info

Publication number
WO2006079002A3
WO2006079002A3 PCT/US2006/002216 US2006002216W WO2006079002A3 WO 2006079002 A3 WO2006079002 A3 WO 2006079002A3 US 2006002216 W US2006002216 W US 2006002216W WO 2006079002 A3 WO2006079002 A3 WO 2006079002A3
Authority
WO
WIPO (PCT)
Prior art keywords
modular
backflow
cage
relief valve
fluid
Prior art date
Application number
PCT/US2006/002216
Other languages
French (fr)
Other versions
WO2006079002A2 (en
Inventor
Jonathan L Grable
Original Assignee
Zurn Ind Inc
Orr William M
Jonathan L Grable
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 Zurn Ind Inc, Orr William M, Jonathan L Grable filed Critical Zurn Ind Inc
Publication of WO2006079002A2 publication Critical patent/WO2006079002A2/en
Publication of WO2006079002A3 publication Critical patent/WO2006079002A3/en

Links

Classifications

    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
    • F16K11/105—Three-way check or safety valves with two or more closure members
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
    • E03B7/077—Arrangement of backflow preventing devices
    • 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
    • E03C1/106—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves using two or more check valves
    • 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
    • E03C1/108—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves having an aerating valve
    • 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
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2605—Pressure responsive
    • 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
    • Y10T137/598—With repair, tapping, assembly, or disassembly means
    • Y10T137/6086—Assembling or disassembling check valve
    • 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
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7838—Plural

Abstract

A backflow preventor that generally includes a modular fluid arrangement having a modular strut, a one-piece modular cage, a relief valve fluidly connected to the modular cage, and at least one in-line check valve removably housed in the modular cage. In operation, when backflow occurs, pressure in a chamber of the relief valve increases to provide a passageway for fluid to flow out of the modular cage, through the relief valve, to the environment. When the backflow stops, the pressure in the chamber decreases and the passageway closes, moving the fluid through the interior of the modular cage.
PCT/US2006/002216 2005-01-21 2006-01-20 Backflow preventor WO2006079002A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US64607905P 2005-01-21 2005-01-21
US60/646,079 2005-01-21
US11/334,955 2006-01-19
US11/334,955 US7784483B2 (en) 2005-01-21 2006-01-19 Backflow preventer

Publications (2)

Publication Number Publication Date
WO2006079002A2 WO2006079002A2 (en) 2006-07-27
WO2006079002A3 true WO2006079002A3 (en) 2007-10-18

Family

ID=36692974

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/002216 WO2006079002A2 (en) 2005-01-21 2006-01-20 Backflow preventor

Country Status (2)

Country Link
US (1) US7784483B2 (en)
WO (1) WO2006079002A2 (en)

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US8997772B2 (en) 2010-09-07 2015-04-07 Zurn Industries, Llc Backflow prevention and method of manufacture
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CN104685274B (en) 2012-08-16 2017-03-08 S.P.M.流量控制股份有限公司 There is the plunger valve of prestrain hermetic unit
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US9273543B2 (en) 2012-08-17 2016-03-01 S.P.M. Flow Control, Inc. Automated relief valve control system and method
USD707332S1 (en) 2013-03-15 2014-06-17 S.P.M. Flow Control, Inc. Seal assembly
USD707797S1 (en) 2013-03-15 2014-06-24 S.P.M. Flow Control, Inc. Seal segment
US9568138B2 (en) 2013-07-01 2017-02-14 S.P.M. Flow Control, Inc. Manifold assembly
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WO2016205208A1 (en) 2015-06-15 2016-12-22 S.P.M. Flow Control, Inc. Full-root-radius-threaded wing nut having increased wall thickness
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CN107035876B (en) * 2017-05-10 2023-08-18 安徽红星阀门有限公司 Low water loss decompression type backflow preventer
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US11815424B2 (en) 2019-05-08 2023-11-14 Watts Regulator Co. Backflow prevention system test cock with a fluid sensor
US11609586B2 (en) * 2019-10-13 2023-03-21 Aaron Dwayne Lawson Apparatuses for facilitating relieving pressure in a fluid transportation system
US11719352B2 (en) 2020-08-17 2023-08-08 Watts Regulator Co. Check cover assemblies for backflow prevention assemblies with integrated test cock protection shroud
USD1021000S1 (en) 2021-08-17 2024-04-02 Watts Regulator Co. Valve assembly and body for same

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Also Published As

Publication number Publication date
WO2006079002A2 (en) 2006-07-27
US7784483B2 (en) 2010-08-31
US20060185731A1 (en) 2006-08-24

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