ES2030596T3 - ANTI-RETURN VALVE, ESPECIALLY TO BE INSTALLED IN DRINKING WATER PIPES. - Google Patents

ANTI-RETURN VALVE, ESPECIALLY TO BE INSTALLED IN DRINKING WATER PIPES.

Info

Publication number
ES2030596T3
ES2030596T3 ES198989900218T ES89900218T ES2030596T3 ES 2030596 T3 ES2030596 T3 ES 2030596T3 ES 198989900218 T ES198989900218 T ES 198989900218T ES 89900218 T ES89900218 T ES 89900218T ES 2030596 T3 ES2030596 T3 ES 2030596T3
Authority
ES
Spain
Prior art keywords
valve
control membrane
intermediate chamber
exhaust valve
inlet
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
ES198989900218T
Other languages
Spanish (es)
Inventor
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
Original Assignee
WALETZKO ARMATUREN 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 WALETZKO ARMATUREN GmbH filed Critical WALETZKO ARMATUREN GmbH
Application granted granted Critical
Publication of ES2030596T3 publication Critical patent/ES2030596T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E03C1/106—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

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)
  • Fluid-Driven Valves (AREA)
  • Safety Valves (AREA)

Abstract

Válvula antirretorno especialmente indicada para ser instalada en conducciones de agua potable, con una carcasa de conducción (3) construida en forma cilíndrica, que tiene una toma de entrada (1'') y una toma de salida (2''), con una válvula de admisión (4), mantenida por un resorte, alojada dentro de la carcasa y una válvula de salida (5) mantenida por un resorte, así como una cámara intermedia (6) situada entre ambas válvulas (4, 5), que están dispuestas coaxialmente, y dicha cámara (6) está comunicada con la atmósfera exterior mediante una válvula de escape (7), que sirve para el mantenimiento de una presión diferencial mínima entre la toma de entrada (1'') y la cámara intermedia (6), cuyo cuerpo (25) de válvula está unido a una membrana de control (20, 20''), estando comunicadas hidráulicamente una de sus caras de impulsión con la toma de entrada (1'') y la otra cara de impulsión con la cámara intermedia (6), estando la válvula de escape (7), su cuerpo (25) de válvula y la membrana de control (20, 20'') fuera del tubo que constituye la carcasa de conducción (3), caracterizada porque con el cuerpo (25) de válvula de escape están conectadas dos membranas de control (20, 20'') separadas entre sí por un espacio intermedio (26) comunicado con la atmósfera exterior, siendo impulsada la membrana de control (20'') que da al cuerpo (25) de la válvula de escape por la presión hidrostática reinante en la cámara intermedia (6), mientras que la otra membrana de control (20) es impulsada por la presión hidrostática quereina enla tomadeentrada(1''), y siendo la sección activa para la impulsión de la membrana de control (20), unida hidráulicamente con la toma de entrada (1''), menor que la sección activa para la impulsión de la otra membrana de control (20''), unida hidráulicamente a la cámara intermedia (6), en una cuantía mayor que la medida de la sección del pistón que constituye el cuerpo (25) de la válvula de escape.Non-return valve especially indicated to be installed in drinking water pipes, with a cylindrical-shaped casing (3), which has an inlet (1 '') and an outlet (2 ''), with a intake valve (4), maintained by a spring, housed inside the casing and an outlet valve (5) maintained by a spring, as well as an intermediate chamber (6) located between both valves (4, 5), which are arranged coaxially, and said chamber (6) is communicated with the outside atmosphere by means of an exhaust valve (7), which serves to maintain a minimum differential pressure between the inlet port (1 '') and the intermediate chamber (6 ), whose valve body (25) is attached to a control membrane (20, 20``), one of its delivery faces being hydraulically communicated with the inlet port (1 '') and the other delivery face with the intermediate chamber (6), the exhaust valve (7) being, its body (25) valve and the control membrane (20, 20 '') outside the tube constituting the conduction casing (3), characterized in that two control membranes (20, 20 ') are connected to the exhaust valve body (25). ') separated from each other by an intermediate space (26) communicated with the outside atmosphere, the control membrane (20' ') giving the body (25) of the exhaust valve being driven by the hydrostatic pressure prevailing in the intermediate chamber (6), while the other control membrane (20) is driven by the hydrostatic pressure quereina in the inlet (1 ''), and being the active section for the drive of the control membrane (20), hydraulically joined with the inlet (1 ''), smaller than the active section for driving the other control membrane (20 ''), hydraulically connected to the intermediate chamber (6), in an amount greater than the measurement of the section of the piston that constitutes the body (25) of the exhaust valve.

ES198989900218T 1987-12-12 1988-11-30 ANTI-RETURN VALVE, ESPECIALLY TO BE INSTALLED IN DRINKING WATER PIPES. Expired - Lifetime ES2030596T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873742207 DE3742207A1 (en) 1987-12-12 1987-12-12 BACKFLOW PREVENTORS, ESPECIALLY FOR INSTALLATION IN DRINKING WATER PIPES

Publications (1)

Publication Number Publication Date
ES2030596T3 true ES2030596T3 (en) 1992-11-01

Family

ID=6342484

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198989900218T Expired - Lifetime ES2030596T3 (en) 1987-12-12 1988-11-30 ANTI-RETURN VALVE, ESPECIALLY TO BE INSTALLED IN DRINKING WATER PIPES.

Country Status (6)

Country Link
EP (2) EP0320700A1 (en)
DE (2) DE3742207A1 (en)
DK (1) DK396489A (en)
ES (1) ES2030596T3 (en)
FI (1) FI893642A7 (en)
WO (1) WO1989005382A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4204386C2 (en) * 1992-02-14 1994-01-20 Honeywell Braukmann Gmbh System separator
DE4217334C2 (en) * 1992-05-26 1994-06-09 Heinrich W Kiesewetter System separation valve
ES2178915B1 (en) * 2000-03-07 2004-04-16 Plasticos Mondragon, S.A. PERFECTED MEMBRANE HYDRAULIC VALVE, FOR FLUID FLOW REGULATION.
CN102486237A (en) * 2010-12-01 2012-06-06 刘永 Backflow preventer with built-in filter screen and no external piping
CN102322541B (en) * 2011-09-02 2013-08-28 陈银周 Low-resistance backflow preventer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503424A (en) * 1945-01-15 1950-04-11 Leonard L Snyder Backflow preventer
US3083723A (en) * 1959-11-04 1963-04-02 Paul J Duchin Vacuum breaker
IL45802A (en) * 1973-10-26 1977-05-31 Griswold Controls Check valve useful in backflow prevention apparatus
DE2650934A1 (en) * 1976-11-08 1978-05-11 Waletzko Alfred Apparatebau Back flow preventer between drinking and washing water pipework - has guide rings fitted between valve and guide rod
DE2930819C2 (en) * 1979-07-30 1985-04-11 Amtrol Inc., West Warwick, R.I. Device for preventing the backflow of water in a supply line
DE3537484C1 (en) * 1985-10-22 1987-03-05 Baelz Juergen Controls Shut-off and aeration device, in particular for drinking-water systems

Also Published As

Publication number Publication date
EP0353266B1 (en) 1992-03-04
DE3868925D1 (en) 1992-04-09
EP0320700A1 (en) 1989-06-21
WO1989005382A1 (en) 1989-06-15
EP0353266A1 (en) 1990-02-07
DK396489D0 (en) 1989-08-11
DE3742207A1 (en) 1989-06-22
FI893642A0 (en) 1989-08-01
DK396489A (en) 1989-08-11
FI893642A7 (en) 1989-08-01

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