EP0671515A1 - Safety device to be mounted between the drinking water distribution network pipe and a feed pipe for a consumer apparatus, like a heater boiler - Google Patents

Safety device to be mounted between the drinking water distribution network pipe and a feed pipe for a consumer apparatus, like a heater boiler Download PDF

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Publication number
EP0671515A1
EP0671515A1 EP95490009A EP95490009A EP0671515A1 EP 0671515 A1 EP0671515 A1 EP 0671515A1 EP 95490009 A EP95490009 A EP 95490009A EP 95490009 A EP95490009 A EP 95490009A EP 0671515 A1 EP0671515 A1 EP 0671515A1
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EP
European Patent Office
Prior art keywords
backflow preventer
upstream
pipe
downstream
sleeves
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Granted
Application number
EP95490009A
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German (de)
French (fr)
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EP0671515B1 (en
Inventor
Philippe Gourdin
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Orkli SCL
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Sa Haudiquer Industrie
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Publication of EP0671515A1 publication Critical patent/EP0671515A1/en
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Publication of EP0671515B1 publication Critical patent/EP0671515B1/en
Anticipated expiration legal-status Critical
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    • 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

Definitions

  • the invention relates to a safety device intended to be inserted between the pipe of a drinking water distribution network and the supply pipe of a water user device, such as a boiler.
  • Such a boiler and the network of radiators connected to it form a normally closed circuit in which the heating water can contain products which are liable to be dangerous for humans.
  • this closed circuit To compensate for losses, for example following purges and / or evaporation, this closed circuit must be replenished periodically.
  • the upstream and downstream sleeves each carry at their free end a fraction of a connection means with that of the corresponding upstream or downstream pipes.
  • these connecting means can be of any known type, such as screw-nut systems in which sealing rings are provided.
  • the most recent safety standards also require installers of appliances, for example boilers, to add to these backflow preventers at least one isolation valve and, preferably, two isolation valves, one upstream and the other downstream of the backflow preventer.
  • the installer must first study each supply circuit of the appliance such as the boiler he wishes to install.
  • each installer uses, for supply reasons, a particular type of valve.
  • the installer may therefore not have at his immediate disposal a tap corresponding exactly to that or those required and, consequently, it is not uncommon that the installation is not carried out in accordance with the applicable standards.
  • the installer may also have to use another type of tap, which generally requires him to modify the surrounding pipes to take account of the size of the new tap, thus generating an unnecessary exposure time and / or a risk of incorrect adjustment or reassembly.
  • valves upstream and downstream of the backflow preventer increase the connections and therefore the risks of leaks and increase the installation times.
  • One of the results which the invention aims to obtain is a safety device of the type mentioned above which is easier to set up whether in new or existing installations and which reduces the potential for leakage inherent in the connections.
  • the invention relates to such a backflow preventer, in particular characterized in that, instead of the stop valve being independent of the backflow preventer, at least one of the sleeves of the backflow preventer directly produces the body of a tap directly so that it is integrated into the body of the backflow preventer.
  • At least one stop valve 12 is added to this backflow preventer, at least one stop valve 12 and, preferably, two stop valves, each for isolating the backflow preventer from one of the upstream and downstream pipes.
  • At least one of the sleeves 9, 10 of the backflow preventer directly produces the body of a tap directly so that the latter is integrated into the body of the backflow preventer.
  • shut-off valve is no longer left to the initiative and rigor of the installer.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Domestic Plumbing Installations (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Devices For Dispensing Beverages (AREA)

Abstract

The unit, designed to be fitted into a potable water supply with a feed to a consumer unit, e.g. a heater, consists of a disconnector (4) in the form of a cylindrical housing (5) with two sleeves (9,10) equipped with couplings (11), a branch (7) for connection to discharge (8) and at least one stopcock (12), and preferably two. At least one of the two sleeves (9,10) is connected to a stopcock so that it forms a part of the disconnector housing and has a chamber (13) containing a shut-off element (14) which interacts with a seat (15) to control the fluid flow. The unit is pref. made with a stopcock on both the upstream and downstream sides.

Description

L'invention se rapporte à un dispositif de sécurité destiné à s'intercaler entre la conduite d'un réseau de distribution d'eau potable et la conduite d'alimentation d'un appareil utilisateur d'eau, tel une chaudière.The invention relates to a safety device intended to be inserted between the pipe of a drinking water distribution network and the supply pipe of a water user device, such as a boiler.

Une telle chaudière et le réseau de radiateurs qui lui est raccordé forment un circuit normalement fermé dans lequel l'eau de chauffage peut contenir des produits susceptibles d'être dangereux pour l'homme.Such a boiler and the network of radiators connected to it form a normally closed circuit in which the heating water can contain products which are liable to be dangerous for humans.

Pour compenser des pertes, par exemple à la suite de purges et/ou d'évaporation, ce circuit fermé doit périodiquement être réalimenté.To compensate for losses, for example following purges and / or evaporation, this closed circuit must be replenished periodically.

A cet effet, il doit temporairement être relié au réseau de distribution d'eau potable par un circuit dit d'alimentation.To this end, it must be temporarily connected to the drinking water distribution network by a so-called supply circuit.

En cas d'incident et, par exemple, de chute de pression dans le réseau d'eau potable pendant que le circuit d'alimentation y est relié, on peut craindre une remontée de l'eau de chauffage vers le réseau.In the event of an incident and, for example, a drop in pressure in the drinking water network while the supply circuit is connected to it, there is a risk of a rise in the heating water to the network.

Aussi, notamment, pour éviter une pollution accidentelle du réseau de distribution d'eau potable, dans certains pays, il est obligatoire de protéger ce réseau de distribution d'eau potable contre de telles remontées à l'aide d'un dispositif de sécurité, placé en amont de l'appareil utilisateur, dénommé disconnecteur.Also, in particular, to avoid accidental pollution of the drinking water distribution network, in some countries, it It is mandatory to protect this drinking water distribution network against such a rise using a safety device, placed upstream of the user device, called backflow preventer.

On connaît, par exemple, un disconnecteur (FR-A-2.620.785) comprenant un corps d'enveloppe globalement cylindrique, lequel corps :

  • présente deux manchons dits, par référence au sens normal de circulation de l'eau potable, manchon "amont" et manchon "aval", ces deux manchons permettant de le relier hydrauliquement respectivement à une conduite de liaison au réseau de distribution d'eau potable, dite "conduite amont" et à une conduite d'alimentation de l'appareil utilisateur dite "conduite aval",
  • présente en outre un dispositif de mise en relation avec une conduite dite de décharge et
  • loge des moyens pour interdire la remontée vers l'amont et pour évacuer vers la conduite de décharge le fluide qui tenterait de circuler à contre courant c'est à dire de l'aval vers l'amont.
We know, for example, a backflow preventer (FR-A-2,620,785) comprising a generally cylindrical envelope body, which body:
  • has two so-called sleeves, with reference to the normal direction of circulation of drinking water, "upstream" sleeve and "downstream" sleeve, these two sleeves making it possible to hydraulically connect it respectively to a pipe connecting to the drinking water distribution network , called "upstream pipe" and to a supply pipe of the user device called "downstream pipe",
  • also has a device for connecting to a so-called discharge pipe and
  • accommodates means to prevent the ascent upstream and to evacuate towards the discharge pipe the fluid which would try to circulate against the current, that is to say from downstream to upstream.

Pour être reliés aux conduites, les manchons amont et aval portent chacun à leur extrémité libre une fraction d'un moyen de liaison avec celle des conduites amont ou aval correspondant.To be connected to the pipes, the upstream and downstream sleeves each carry at their free end a fraction of a connection means with that of the corresponding upstream or downstream pipes.

Sous réserve de permettre de fixer le disconnecteur de manière démontable, ces moyens de liaison peuvent être de tous types connus, tels des systèmes vis-écrou dans lesquels sont prévues des bagues d'étanchéité.Subject to allowing the disconnector to be fixed in a removable manner, these connecting means can be of any known type, such as screw-nut systems in which sealing rings are provided.

Dans la plupart des pays, les normes de sécurité les plus récentes obligent en outre les installateurs d'appareils, par exemple de chaudières, à adjoindre à ces disconnecteurs au moins un robinet d'isolement et, de préférence, deux robinets d'isolement, l'un en amont et l'autre en aval du disconnecteur.In most countries, the most recent safety standards also require installers of appliances, for example boilers, to add to these backflow preventers at least one isolation valve and, preferably, two isolation valves, one upstream and the other downstream of the backflow preventer.

Pour répondre à ces normes, l'installateur doit préalablement étudier chaque circuit d'alimentation de l'appareil tel la chaudière qu'il souhaite installer.To meet these standards, the installer must first study each supply circuit of the appliance such as the boiler he wishes to install.

En effet, chaque appareil utilisateur ou sa conduite d'alimentation peut déjà présenter un équipement particulier, tel :

  • un disconnecteur pré-installé, et/ou
  • un ou deux robinets d'isolement.
In fact, each user device or its supply line can already have specific equipment, such as:
  • a pre-installed backflow preventer, and / or
  • one or two isolation valves.

Ensuite, si nécessaire, il doit réaliser le complément en faisant appel aux robinets existant sur le marché.Then, if necessary, he must make the complement by using the taps existing on the market.

Pour chaque type d'installation ou d'appareil, chaque installateur fait appel, pour des raisons d'approvisionnement, à un type particulier de robinet.For each type of installation or appliance, each installer uses, for supply reasons, a particular type of valve.

Pour ces robinets, il n'existe pas de standard.There is no standard for these valves.

L'installateur peut donc ne pas avoir à sa disposition immédiate de robinet correspondant exactement à celui ou à ceux requis et, en conséquence, il n'est pas rare que l'installation ne soit pas réalisée de manière conforme aux normes applicables.The installer may therefore not have at his immediate disposal a tap corresponding exactly to that or those required and, consequently, it is not uncommon that the installation is not carried out in accordance with the applicable standards.

Lorsque l'installateur ne dispose pas ou ne dispose plus momentanément du robinet d'arrêt qui convient à l'installation à laquelle il le destine, que ce soit pour :

  • une installation neuve ou
  • une intervention de maintenance et/ou
  • une réparation sur le circuit d'alimentation nécessitant le remplacement :
    • . du disconnecteur et/ou
    • . de l'un ou des deux robinets d'isolement, afin que son client puisse se servir de l'appareil le temps qu'il se réapprovisionne en robinet et puisse réintervenir pour mettre l'installation en conformité, il n'est pas rare qu'il monte provisoirement le disconnecteur en direct sur l'installation.
When the installer does not have or no longer has the stopcock which is suitable for the installation for which he intends it, either for:
  • a new installation or
  • maintenance and / or
  • a repair on the supply circuit requiring replacement:
    • . of the backflow preventer and / or
    • . of one or two isolation valves, so that his client can use the device while he replenishes the valve and can intervene to bring the installation into compliance, it is not uncommon that '' he temporarily installs the backflow preventer directly on the installation.

Dans cet intervalle de temps, l'absence de robinet d'isolement peut endommager le système de sécurité et ensuite compromettre son bon fonctionnement.During this time, the absence of an isolation valve can damage the safety system and then compromise its proper functioning.

Pour les mêmes raisons, l'installateur peut également être amené à utiliser un autre type de robinet, ce qui, généralement, lui impose de modifier les conduites environnantes pour tenir compte de l'encombrement du nouveau robinet, générant ainsi un temps de pose superflu et/ou un risque de déréglage ou de remontage incorrect.For the same reasons, the installer may also have to use another type of tap, which generally requires him to modify the surrounding pipes to take account of the size of the new tap, thus generating an unnecessary exposure time and / or a risk of incorrect adjustment or reassembly.

Par ailleurs, les robinets en amont et en aval du disconnecteur multiplient les raccordements et donc les risques de défaut d'étanchéité et augmentent les temps de pose.In addition, the valves upstream and downstream of the backflow preventer increase the connections and therefore the risks of leaks and increase the installation times.

Un des résultats que l'invention vise à obtenir est un dispositif de sécurité du type cité plus haut qui soit plus facile à mettre en place que ce soit dans des installations neuves ou existantes et qui réduise le potentiel de fuites inhérent aux raccordements.One of the results which the invention aims to obtain is a safety device of the type mentioned above which is easier to set up whether in new or existing installations and which reduces the potential for leakage inherent in the connections.

A cet effet, l'invention se rapporte à un tel disconnecteur notamment caractérisé en ce qu'au lieu que le robinet d'arrêt soit indépendant du disconnecteur, au moins l'un des manchons du disconnecteur réalise directement localement le corps d'un robinet de sorte que celui-ci est intégré au corps du disconnecteur.To this end, the invention relates to such a backflow preventer, in particular characterized in that, instead of the stop valve being independent of the backflow preventer, at least one of the sleeves of the backflow preventer directly produces the body of a tap directly so that it is integrated into the body of the backflow preventer.

L'invention sera bien comprise à l'aide de la description ci-aprés faite à titre d'exemple non limitatif en regard du dessin ci-annexé qui représente schématiquement une vue en coupe axiale d'un dispositif de sécurité comprenant un disconnecteur avec un robinet d'arrêt en amont et un robinet d'arrêt en aval.The invention will be better understood with the aid of the description below given by way of nonlimiting example with regard to the appended drawing which schematically represents a view in axial section of a safety device comprising a backflow preventer with a upstream shutoff valve and downstream shutoff valve.

En se reportant au dessin, on voit que, pour protéger un réseau de distribution d'eau potable qui alimente un appareil utilisateur d'eau, tel une chaudière, on utilise un dispositif de sécurité 1 intercalé entre deux conduites 2, 3 dont :

  • une conduite 2 de liaison au réseau de distribution d'eau potable dite "conduite amont", et
  • une conduite 3 d'alimentation de l'appareil dite "conduite aval",

et ce, par référence au sens normal de circulation de l'eau.Referring to the drawing, it can be seen that, in order to protect a drinking water distribution network which supplies a water user device, such as a boiler, a safety device 1 is used interposed between two pipes 2, 3 of which:
  • a pipe 2 connecting to the drinking water distribution network called "upstream pipe", and
  • a line 3 for supplying the appliance, known as the "downstream line",

and this, by reference to the normal direction of water circulation.

Ce dispositif de sécurité 1 comprend un disconnecteur 4 qui comprend lui-même un corps 5 d'enveloppe globalement cylindrique, lequel corps :

  • présente des manchons 9, 10 dits amont et aval de raccordement du disconnecteur au moins indirectement respectivement aux conduites amont et aval par l'intermédiaire de tous moyens 11 de liaison connus agissant aux extrémités libres des manchons,
  • présente en outre un dispositif 7 de mise en relation avec une conduite 8 dite de décharge vers les eaux usées et,
  • loge des moyens 6 de contrôle du sens de circulation du fluide pour interdire la remontée vers la conduite amont et évacuer, vers la conduite de décharge, le fluide qui tenterait de circuler à contre courant, c'est à dire de l'aval vers l'amont.
This safety device 1 comprises a backflow preventer 4 which itself comprises a body 5 of generally cylindrical envelope, which body:
  • has sleeves 9, 10 called upstream and downstream for connection of the backflow preventer at least indirectly respectively to the upstream and downstream pipes via of all known connecting means 11 acting at the free ends of the sleeves,
  • further presents a device 7 for contacting a pipe 8 called discharge to the wastewater and,
  • accommodates means 6 for controlling the direction of circulation of the fluid to prevent the ascent to the upstream pipe and to evacuate, towards the discharge pipe, the fluid which would try to circulate against the current, that is to say from downstream to the 'upstream.

A ce disconnecteur, est adjoint au moins un robinet 12 d'arrêt et, de préférence, deux robinets d'arrêt, chacun pour isoler le disconnecteur d'une des conduites amont et aval.To this backflow preventer, is added at least one stop valve 12 and, preferably, two stop valves, each for isolating the backflow preventer from one of the upstream and downstream pipes.

Selon l'invention, au lieu que le robinet d'arrêt soit indépendant du disconnecteur, au moins l'un des manchons 9, 10 du disconnecteur réalise directement localement le corps d'un robinet de sorte que celui-ci est intégré au corps du disconnecteur.According to the invention, instead of the shut-off valve being independent of the backflow preventer, at least one of the sleeves 9, 10 of the backflow preventer directly produces the body of a tap directly so that the latter is integrated into the body of the backflow preventer.

N'étant plus indépendant du disconnecteur, le choix du robinet d'arrêt n'est plus laissé à l'initiative et à la rigueur de l'installateur.No longer being independent of the backflow preventer, the choice of the shut-off valve is no longer left to the initiative and rigor of the installer.

A cet effet, selon l'invention, dans le manchon est délimitée une chambre 13 logeant un obturateur 14 coopérant avec un siège 15 pour contrôler la circulation du fluide entre:

  • la partie du corps du disconnecteur logeant les moyens de contrôle du sens de circulation du fluide et,
  • l'extrémité libre du manchon.
To this end, according to the invention, in the sleeve is delimited a chamber 13 housing a shutter 14 cooperating with a seat 15 to control the circulation of the fluid between:
  • the part of the body of the backflow preventer housing the means for controlling the direction of circulation of the fluid and,
  • the free end of the sleeve.

En intégrant au moins l'un des robinets d'arrêt au corps du disconnecteur, l'installateur :

  • profite d'une simplification de l'opération de mise en conformité, d'un gain de place et de temps de pose, et
  • est assuré de la conformité et de l'étanchéité complète du système de sécurité ainsi réalisé.
By integrating at least one of the shut-off valves into the body of the backflow preventer, the installer:
  • benefits from a simplification of the compliance operation, saving space and installation time, and
  • is assured of the conformity and complete tightness of the security system thus produced.

Selon la configuration d'origine des appareils sur lesquels doivent être installés des disconnecteurs ou leurs destinations, on prévoit d'intégrer un robinet en amont et/ou en aval.Depending on the original configuration of the devices on which backflow preventers are to be installed or their destinations, provision is made to integrate a valve upstream and / or downstream.

Claims (3)

Dispositif de sécurité destiné à s'intercaler entre la conduite d'un réseau de distribution d'eau potable et la conduite d'alimentation d'un appareil utilisateur d'eau comprenant un disconnecteur (4) qui comprend lui-même un corps (5) d'enveloppe globalement cylindrique, lequel corps : - présente des manchons (9, 10) dits amont et aval de raccordement du disconnecteur au moins indirectement respectivement aux conduites amont et aval par l'intermédiaire de tous moyens (11) de liaison connus agissant aux extrémités libres des manchons, - présente en outre un dispositif (7) de mise en relation avec une conduite (8) dite de décharge vers les eaux usées et, - loge des moyens (6) de contrôle du sens de circulation du fluide pour interdire la remontée vers la conduite amont et évacuer, vers la conduite de décharge, le fluide qui tenterait de circuler à contre courant, c'est à dire de l'aval vers l'amont,    auquel disconnecteur est adjoint au moins un robinet (12) d'arrêt et, de préférence, deux robinets d'arrêt, chacun pour isoler le disconnecteur d'une des conduites amont et aval,
   ce dispositif étant CARACTERISE en ce qu'au lieu que le robinet d'arrêt soit indépendant du disconnecteur, au moins l'un des manchons (9, 10) du disconnecteur réalise directement localement le corps d'un robinet de sorte que celui-ci est intégré au corps du disconnecteur.Safety device intended to be inserted between the pipe of a drinking water distribution network and the supply pipe of a water user device comprising a backflow preventer (4) which itself comprises a body (5 ) of generally cylindrical envelope, which body: - has sleeves (9, 10) called upstream and downstream for connection of the backflow preventer at least indirectly respectively to the upstream and downstream pipes by means of all known connecting means (11) acting at the free ends of the sleeves, - also has a device (7) for contacting a pipe (8) called discharge to the wastewater and, - accommodates means (6) for controlling the direction of circulation of the fluid to prohibit the ascent to the upstream pipe and to evacuate, towards the discharge pipe, the fluid which would attempt to circulate against the current, ie downstream upstream, to which a backflow preventer is added at least one stop valve (12) and, preferably, two stop valves, each for isolating the backflow preventer from one of the upstream and downstream pipes,
this device being CHARACTERIZED in that, instead of the shut-off valve being independent of the backflow preventer, at least one of the sleeves (9, 10) of the backflow preventer produces directly locally the body of a tap so that it is integrated into the body of the backflow preventer. Dispositif selon la revendication 1 caractérisé en ce que, dans le manchon, est délimitée une chambre (13) logeant un obturateur (14) coopérant avec un siège (15) pour contrôler la circulation du fluide entre: - la partie du corps du disconnecteur logeant les moyens de contrôle du sens de circulation du fluide et, - l'extrémité libre du manchon. Device according to claim 1 characterized in that, in the sleeve, is defined a chamber (13) housing a shutter (14) cooperating with a seat (15) to control the circulation of the fluid between: the part of the body of the backflow preventer housing the means for controlling the direction of circulation of the fluid and, - the free end of the sleeve. Dispositif selon la revendication 1 ou 2 caractérisé en ce que le manchon aval et le manchon amont sont chacun pourvus d'un robinet.Device according to claim 1 or 2 characterized in that the downstream sleeve and the upstream sleeve are each provided with a tap.
EP19950490009 1994-03-10 1995-03-10 Safety device to be mounted between the drinking water distribution network pipe and a feed pipe for a consumer apparatus, like a heater boiler Expired - Lifetime EP0671515B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9403110A FR2717200B1 (en) 1994-03-10 1994-03-10 Safety device intended to be inserted between the pipe of a drinking water distribution network and the supply pipe of a water user device, such as a boiler.
FR9403110 1994-03-10

Publications (2)

Publication Number Publication Date
EP0671515A1 true EP0671515A1 (en) 1995-09-13
EP0671515B1 EP0671515B1 (en) 2000-01-26

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Application Number Title Priority Date Filing Date
EP19950490009 Expired - Lifetime EP0671515B1 (en) 1994-03-10 1995-03-10 Safety device to be mounted between the drinking water distribution network pipe and a feed pipe for a consumer apparatus, like a heater boiler

Country Status (4)

Country Link
EP (1) EP0671515B1 (en)
DE (1) DE69514700T2 (en)
ES (1) ES2145243T3 (en)
FR (1) FR2717200B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0761891A1 (en) * 1995-09-12 1997-03-12 Haudiquer Developpement, Sarl Safety device between a drinking water main and a consumer appliance supply pipe

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2404981B1 (en) 2011-11-15 2014-09-26 Orkli, S.Coop. Valve assembly adapted to connect a water supply network with a primary circuit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2783377A (en) * 1976-08-16 1979-02-15 Dorf Ind Pty Ltd Non-return valve
GB2179121A (en) * 1985-08-17 1987-02-25 Wigley Albert F A non-return and/or anti- vacuum spring loaded valve assembly
WO1987002402A1 (en) * 1985-10-21 1987-04-23 Zvi Weingarten Backflow preventer apparatus for fluid flow lines
FR2620785A1 (en) * 1987-09-22 1989-03-24 Haudiquer Sa FLUID FLOW CONTROL DEVICE COMPRISING AT LEAST ONE ANTI RETURN VALVE
DE3830660A1 (en) * 1987-11-11 1989-05-24 Nussbaum & Co Ag R Distributor fitting

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2783377A (en) * 1976-08-16 1979-02-15 Dorf Ind Pty Ltd Non-return valve
GB2179121A (en) * 1985-08-17 1987-02-25 Wigley Albert F A non-return and/or anti- vacuum spring loaded valve assembly
WO1987002402A1 (en) * 1985-10-21 1987-04-23 Zvi Weingarten Backflow preventer apparatus for fluid flow lines
FR2620785A1 (en) * 1987-09-22 1989-03-24 Haudiquer Sa FLUID FLOW CONTROL DEVICE COMPRISING AT LEAST ONE ANTI RETURN VALVE
DE3830660A1 (en) * 1987-11-11 1989-05-24 Nussbaum & Co Ag R Distributor fitting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0761891A1 (en) * 1995-09-12 1997-03-12 Haudiquer Developpement, Sarl Safety device between a drinking water main and a consumer appliance supply pipe
FR2738611A1 (en) * 1995-09-12 1997-03-14 Haudiquer Dev SAFETY DEVICE FOR INTERCONNECTING BETWEEN THE CONDUCT OF A DRINKING WATER DISTRIBUTION NETWORK AND THE SUPPLY LINE OF A WATER-USE APPARATUS

Also Published As

Publication number Publication date
DE69514700D1 (en) 2000-03-02
FR2717200A1 (en) 1995-09-15
FR2717200B1 (en) 1996-04-12
EP0671515B1 (en) 2000-01-26
ES2145243T3 (en) 2000-07-01
DE69514700T2 (en) 2000-09-07

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