DE3366493D1 - Back flow preventer, especially for water supply conduits - Google Patents

Back flow preventer, especially for water supply conduits

Info

Publication number
DE3366493D1
DE3366493D1 DE8383100098T DE3366493T DE3366493D1 DE 3366493 D1 DE3366493 D1 DE 3366493D1 DE 8383100098 T DE8383100098 T DE 8383100098T DE 3366493 T DE3366493 T DE 3366493T DE 3366493 D1 DE3366493 D1 DE 3366493D1
Authority
DE
Germany
Prior art keywords
upstream
downstream
chamber
piston
compartment
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
Application number
DE8383100098T
Other languages
English (en)
Inventor
Peter Hoffmann
Walter Evers
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.)
WALETZKO ARMATUREN GMBH, 5820 GEVELSBERG, DE
Original Assignee
Lang Apparatebau GmbH
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 Lang Apparatebau GmbH filed Critical Lang Apparatebau GmbH
Priority to DE8383100098T priority Critical patent/DE3366493D1/de
Application granted granted Critical
Publication of DE3366493D1 publication Critical patent/DE3366493D1/de
Expired legal-status Critical Current

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
    • 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
    • Y10T137/2544—Supply and exhaust type
    • Y10T137/2557—Waste responsive to flow stoppage
    • 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
    • Y10T137/3149—Back flow prevention by vacuum breaking [e.g., anti-siphon devices]
    • Y10T137/3185—Air vent in liquid flow line
    • Y10T137/3294—Valved
    • Y10T137/3331—With co-acting valve in liquid flow path

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Check Valves (AREA)
  • Pipe Accessories (AREA)
  • Safety Valves (AREA)
DE8383100098T 1982-03-15 1983-01-07 Back flow preventer, especially for water supply conduits Expired DE3366493D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8383100098T DE3366493D1 (en) 1982-03-15 1983-01-07 Back flow preventer, especially for water supply conduits

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19828207222U DE8207222U1 (de) 1982-03-15 1982-03-15 Rohrtrenner, insbesondere fuer trinkwasserleitungen
DE8383100098T DE3366493D1 (en) 1982-03-15 1983-01-07 Back flow preventer, especially for water supply conduits

Publications (1)

Publication Number Publication Date
DE3366493D1 true DE3366493D1 (en) 1986-11-06

Family

ID=6738028

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19828207222U Expired DE8207222U1 (de) 1982-03-15 1982-03-15 Rohrtrenner, insbesondere fuer trinkwasserleitungen
DE8383100098T Expired DE3366493D1 (en) 1982-03-15 1983-01-07 Back flow preventer, especially for water supply conduits

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19828207222U Expired DE8207222U1 (de) 1982-03-15 1982-03-15 Rohrtrenner, insbesondere fuer trinkwasserleitungen

Country Status (5)

Country Link
US (1) US4518006A (de)
EP (1) EP0088861B1 (de)
AT (1) ATE22584T1 (de)
CH (1) CH656663A5 (de)
DE (2) DE8207222U1 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3444300A1 (de) * 1984-12-05 1986-06-05 Lang Apparatebau GmbH, 8227 Siegsdorf Rohrtrenner, insbesondere fuer trinkwasserleitungen
US4672991A (en) * 1986-04-01 1987-06-16 Badders Edwin T Back flow prevention valve
US5163465A (en) * 1991-09-20 1992-11-17 King Lloyd H Sr Vacuum breaker venting valve
US5425393A (en) * 1993-12-15 1995-06-20 Zurn Industries, Inc. Backflow prevention and detection system
JP3514684B2 (ja) * 1999-12-22 2004-03-31 兼工業株式会社 水撃防止装置
US6675110B2 (en) 2002-01-15 2004-01-06 Watts Regulatoryco. Testing valve assemblies
PL359448A1 (en) * 2002-04-03 2003-10-06 Hans Sasserath & Co Kg Set of isolating valves for water supply system
US6910495B2 (en) * 2003-02-06 2005-06-28 Anthony P. Lafalce Backflow prevention system
US20050224114A1 (en) * 2004-04-07 2005-10-13 Christopher Michael Cook Breakaway pipe coupling with automatic shutoff
JP4559824B2 (ja) * 2004-11-08 2010-10-13 株式会社豊田自動織機 油圧回路
DE102005049110B4 (de) 2005-10-11 2007-05-31 Hans Sasserath & Co. Kg Dichtkraftverstärkter Rohrtrenner
AU2019376015A1 (en) 2018-11-09 2021-05-27 Flowserve Pte. Ltd. Pistons for use in fluid exchange devices and related devices, systems, and methods
CN112996983A (zh) 2018-11-09 2021-06-18 芙罗服务管理公司 流体交换设备以及相关控制装置、系统和方法
US10865810B2 (en) 2018-11-09 2020-12-15 Flowserve Management Company Fluid exchange devices and related systems, and methods
CN112997030B (zh) 2018-11-09 2023-10-03 芙罗服务管理公司 方法和包括冲洗特征件的阀
CN112997009A (zh) 2018-11-09 2021-06-18 芙罗服务管理公司 流体交换设备以及相关控制装置、系统和方法
CN113015856B (zh) 2018-11-09 2023-08-08 芙罗服务管理公司 流体交换设备以及相关控制装置、系统和方法
WO2021118771A1 (en) 2019-12-12 2021-06-17 Flowserve Management Company Fluid exchange devices and related controls, systems, and methods
US11746509B2 (en) * 2021-09-01 2023-09-05 Kenny Bassett Backflow prevention device

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2953153A (en) * 1958-02-28 1960-09-20 Leslie C Gaul Vented safety check valve
US3067770A (en) * 1959-10-29 1962-12-11 Siegler Inc Two-way pressure responsive flow valve
US3083723A (en) * 1959-11-04 1963-04-02 Paul J Duchin Vacuum breaker
US3114382A (en) * 1962-04-30 1963-12-17 Elva J Karshner Backflow preventing valve
US3905382A (en) * 1973-09-28 1975-09-16 William Waterston Back flow preventor
AU465123B2 (en) * 1973-10-02 1975-09-03 Improvements in or relating to devices for preventing back flow in fluid supply systems
DE2418035C3 (de) * 1974-04-13 1978-09-21 Alfred Waletzko Apparatebau, 5820 Gevelsberg Rohrunterbrecher
US4013088A (en) * 1975-05-19 1977-03-22 Braukmann Armaturen Ag Valve structure
US4044787A (en) * 1976-03-19 1977-08-30 Rockwell International Corporation Backflow preventer and relief valve assembly
US4159025A (en) * 1977-05-06 1979-06-26 Telford L. Smith Back flow preventer valve
DE2747941C2 (de) * 1977-10-26 1985-02-14 Lang Apparatebau GmbH, 8227 Siegsdorf Vorrichtung zum Schutz von Trinkwasserleitungen gegen rückfließendes Brauchwasser
US4232704A (en) * 1978-03-28 1980-11-11 Amtrol Inc. In line back flow preventer
FR2469630B1 (fr) * 1979-11-12 1986-02-14 Frisquet Anc Ets M Disconnecteur pour canalisation d'eau potable
DE3207964A1 (de) * 1981-04-16 1982-11-11 Gerson GmbH, 4400 Münster Rueckflusssicherung fuer stroemende medien in leitungen

Also Published As

Publication number Publication date
ATE22584T1 (de) 1986-10-15
EP0088861A3 (en) 1985-05-15
EP0088861A2 (de) 1983-09-21
US4518006A (en) 1985-05-21
CH656663A5 (de) 1986-07-15
DE8207222U1 (de) 1982-08-05
EP0088861B1 (de) 1986-10-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: WALETZKO ARMATUREN GMBH, 5820 GEVELSBERG, DE

8339 Ceased/non-payment of the annual fee