EP1452652B1 - Valve arrangement for a back flow preventer - Google Patents

Valve arrangement for a back flow preventer Download PDF

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Publication number
EP1452652B1
EP1452652B1 EP04003460A EP04003460A EP1452652B1 EP 1452652 B1 EP1452652 B1 EP 1452652B1 EP 04003460 A EP04003460 A EP 04003460A EP 04003460 A EP04003460 A EP 04003460A EP 1452652 B1 EP1452652 B1 EP 1452652B1
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EP
European Patent Office
Prior art keywords
inlet
socket
pressure
water system
outlet
Prior art date
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Expired - Lifetime
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EP04003460A
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German (de)
French (fr)
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EP1452652A3 (en
EP1452652A2 (en
Inventor
Willi Hecking
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Hans Sasserath GmbH and Co KG
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Hans Sasserath GmbH and Co KG
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Publication of EP1452652A2 publication Critical patent/EP1452652A2/en
Publication of EP1452652A3 publication Critical patent/EP1452652A3/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1083—Filling valves or arrangements for filling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/12—Arrangements for connecting heaters to circulation pipes
    • F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
    • F24H9/133—Storage heaters
    • F24H9/136—Arrangement of inlet valves used therewith

Definitions

  • the invention relates to a valve assembly for a pipe separator for separating a replenishable from a drinking water system or domestic hot water system of this drinking water system, with an upstream and downstream backflow preventer, both close in the direction of the service water system to the drinking water system, and a relief valve, of the Pressure of the drinking water system is acted upon in the closing direction and over which the space between the backflow preventer is connected with elimination of this pressure with a drain.
  • the service water system may be, for example, a heating system.
  • a heating system is from a drinking water system, the drinking water pipe, filled or refilled. It must be prevented under all circumstances that, for example, at a pressure drop in the drinking water system, water from the service water system flows back into the drinking water system.
  • backflow preventer are provided. These are spring-loaded check valves, which open under the influence of drinking water pressure only in the direction of the drinking water system to the process water system. However, this is not considered sufficient for continuous operation. Rather, after completion of the filling or refilling a physical separation between drinking water system and service water system is prescribed, for example by filling or refilling via a hose which is removed after completion of the filling or refilling process. This ensures that even over leaky shut-off valves or backflow preventer no hot water can get into the drinking water system.
  • the company publication "SYR Filling Group Type 2128" by Hans Sasserath & Co. KG discloses a filling group which is attached to the process water system, e.g. a closed heating system, is permanently installed and has a connection for a hose.
  • the filling group is connected to a drinking water system via the hose to be connected.
  • the filling group contains a shut-off valve and a pressure reducer.
  • the invention has for its object to simplify the filling process with a pipe separator arrangement of the type mentioned and facilitate.
  • Such a pipe separator arrangement is fixed between drinking water system and service water system, e.g. a hot water central heating system, installed. To fill or refill no hose connection needs to be made. This facilitates handling. Due to the automatic opening of the relief valve when there is no pressure difference between the drinking water system and the service water system, a mechanical separation of the systems is ensured in this case.
  • a built-in pressure reducer ensures that the pressure in the service water system can not exceed a predetermined value. When the pressure in the service water system reaches the pressure set at the pressure reducer, the pressure reducer valve closes, interrupting the filling even if the pressure in the potable water system is higher.
  • the pressure reducer provides additional security against a backflow of service water into the drinking water system. Through the shut-off valve, the filling process can be interrupted and the drinking water system can be safely separated from the service water system in normal operation, independently e.g. from the backflow preventers.
  • the entire pipe separator assembly is a compact and easy to install assembly.
  • the backflow preventer and the relief valve are combined to form an assembly, which can be used as a whole in a pull-out in which the drinking and service water connections and the drainage having Rohrtrennergephaseuse.
  • the relief valve forms a valve spool, which is acted upon on an end face of the drinking water pressure and on the opposite end face of the pressure in a space between the backflow preventer and by the closed position in the closed position associated with the outlet side drain opening of the Rohrtrennergephaseuses.
  • the Rohrtrennergeophuse has an inlet port on an inlet side and an aligned outlet port on the opposite outlet side, the one define common axis.
  • a receiving bore is formed, whose axis forms an angle with the common axis of the inlet and outlet port and on the outlet side is directly on the outlet side in communication and on the other hand connected on the inlet side via a connecting channel with the inlet port.
  • the receiving bore is open on the inlet side and closed by a plug.
  • the assembly with backflow preventer and relief valve is inserted into the receiving bore.
  • a drain connection branches off from the receiving bore.
  • the check valve and the pressure reducer are arranged in the flow path upstream of the upstream backflow preventer.
  • the shut-off valve is a ball valve seated in an inlet passage immediately behind the inlet port on the common axis of the inlet and outlet ports.
  • a nozzle is formed, which forms a cylindrical receptacle.
  • a first portion of the connecting channel opens, starting from the inlet channel behind the ball valve in the upper part of the lateral surface of the receptacle.
  • a second portion of the connecting channel extends from the lower part of the lateral surface of the receptacle and opens into the receiving bore upstream of the upstream backflow preventer.
  • a trained as a closed module pressure reducer is inserted into the receptacle of the nozzle.
  • the two portions of the connecting channel are substantially parallel to each other and at an angle to the common axis of the inlet and outlet ports.
  • test connections for the inlet pressure, the outlet pressure and the mean pressure between the backflow preventer are provided on the pipe separator housing.
  • Fig.1 is denoted by 10 a Rohrtrennergephaseuse.
  • the pipe separator housing 10 has an inlet port 12 on an inlet side and an outlet port 14 on an outlet side. Inlet port 12 and outlet port 14 are coaxially disposed with a common axis 16 on opposite sides of the pipe separator housing 10.
  • a receiving bore 18 is provided in the pipe separator housing 10. The axis of the receiving bore 18 forms with the axis 16 of the inlet port 12 and outlet port 14 at an acute angle.
  • the receiving bore 18 is on the outlet side directly with an outlet channel 20 of the outlet port in combination. On the inlet side, the receiving bore 18 is open and lockable by a plug 22.
  • a Rohrtrennerpatrone 24 with an upstream mulch disciplineverhinderer 26, a downstream mulch redesignverhinderer 28 and an interposed in the water flow therebetodean, designed as a slide valve relief valve 30.
  • the backflow preventer 26 and 28 and the relief valve 30 are combined into an assembly, as a whole pulled out into the receiving bore 18 can be used.
  • the relief valve 30 forms a valve spool, which is acted upon on an end face of the drinking water pressure and on the opposite end face of the pressure in a space between the backflow preventers 26 and 28. From the receiving bore 18 is a drain 32.
  • the inlet end of the receiving bore 18 is connected via a connecting channel, which is generally designated 34, with an inlet channel 36 of the inlet port 12.
  • a connecting channel which is generally designated 34
  • an inlet channel 36 of the inlet port 12 In the inlet channel 36 sits a ball valve designed as a check valve 38 with a lever 40th
  • the connecting channel 34 consists of two sections: A first portion 46 extends from the inlet channel 36 downstream of the shut-off valve 38 to the receptacle 44 and opens in the upper part of the lateral surface of the receptacle 44. A second portion 48 of the connecting channel 34 extends from the lower part of the lateral surface the receptacle 44 and opens into the receiving bore 18 upstream of the upstream scaffold formulaverhinderer 26.
  • pressure reducer 50 is sealingly inserted in the receptacle 44 designed as a closed assembly. The valve passage of the pressure reducer 50 controls the connection between the sections 46 and 48 of the connection channel 34.
  • a transverse bore 52 connects the receptacle 44 downstream of the control valve of the pressure reducer 50 with test ports 54A and 54B for connecting a pressure gauge either on one side or the other depending on the installation of the filling valve.
  • the test ports are closed by plugs 56A and 56B, respectively. Through these test ports, the pressure upstream of the upstream backflow preventer 26 can be measured.
  • Another test port 58 departs from the receiving bore 18 between the upstream backflow preventer 26 and the downstream backflow preventer 28.
  • the test port 58 is closed by a plug 60. Through this test port 58, a pressure gauge can be connected, which allows to control the pressure between the upstream and downstream backflow preventer.
  • a test port 62 is provided, which goes off from the outlet passage 20. At this test port, a pressure gauge 64 is connected.

Abstract

The disconnector has upstream and downstream backflow preventers (30,44) combined with a relief valve (18) to form a structural unit. The relief valve has a slide valve with an upstream end face exposed to water pressure from inlet port unit. A downstream end face is exposed to pressure in space between the preventers. The slide valve covers a lateral outlet opening/drain passage of disconnector casing, in its closed position. The slide valve body is moving in a flow passage between open and closed positions under the action of a pressure difference between the inlet and a space. The body covers a drain passage in its closed position.

Description

Die Erfindung betrifft eine Ventilanordnung für einen Rohrtrenner zum Trennen eines aus einem Trinkwassersystem auf- oder nachfüllbaren Brauchwassersystem von diesem Trinkwassersystem, mit einem stromaufwärtigen und einem stromabwärtigen Rückflußverhinderer, die beide in Richtung von dem Brauchwassersystem zu dem Trinkwassersystem schließen, und einem Entlastungsventil, das von dem Druck des Trinkwassersystems in Schließrichtung beaufschlagt ist und über das der Raum zwischen den Rückflußverhinderern bei Wegfall dieses Druckes mit einem Ablauf verbindbar ist.The invention relates to a valve assembly for a pipe separator for separating a replenishable from a drinking water system or domestic hot water system of this drinking water system, with an upstream and downstream backflow preventer, both close in the direction of the service water system to the drinking water system, and a relief valve, of the Pressure of the drinking water system is acted upon in the closing direction and over which the space between the backflow preventer is connected with elimination of this pressure with a drain.

Das Brauchwassersystem kann beispielsweise ein Heizungssystem sein. Ein solches Heizungssystem wird aus einem Trinkwassersystem, der Trinkwasserleitung, gefüllt oder nachgefüllt. Es muß unter allen Umständen verhindert werden, daß etwa bei einem Druckabfall im Trinkwassersystem Wasser aus dem Brauchwassersystem in das Trinkwassersystem zurückfließt. Zu diesem Zweck sind "Rückflußverhinderer" vorgesehen. Das sind federbelastete Rückschlagventile, die unter dem Einfluß des Trinkwasserdrucks nur in Richtung vom Trinkwassersystem zum Brauchwassersystem hin öffnen. Für den Dauerbetrieb wird jedoch auch dies nicht als ausreichend angesehen. Vielmehr ist nach Abschluß des Füll- oder Nachfüllvorganges eine physische Trennung zwischen Trinkwassersystem und Brauchwassersystem vorgeschrieben, beispielsweise durch Füllen oder Nachfüllen über einen Schlauch, der nach Abschluß des Füll- oder Nachfüllvorganges entfernt wird. Dadurch wird sichergestellt, daß auch über undichte Absperrventile oder Rückflußverhinderer kein Brauchwasser in das Trinkwassersystem gelangen kann.The service water system may be, for example, a heating system. Such a heating system is from a drinking water system, the drinking water pipe, filled or refilled. It must be prevented under all circumstances that, for example, at a pressure drop in the drinking water system, water from the service water system flows back into the drinking water system. For this purpose, "backflow preventer" are provided. These are spring-loaded check valves, which open under the influence of drinking water pressure only in the direction of the drinking water system to the process water system. However, this is not considered sufficient for continuous operation. Rather, after completion of the filling or refilling a physical separation between drinking water system and service water system is prescribed, for example by filling or refilling via a hose which is removed after completion of the filling or refilling process. This ensures that even over leaky shut-off valves or backflow preventer no hot water can get into the drinking water system.

Da das Entfernen des Schlauchs nach dem Füll- oder Nachfüllvorgang lästig ist und auch nicht kontrolliert werden kann sind feste Installationen von "Rohrtrennern" bekannt (beispielsweise EP 0 972 995 A1 ). Diese bekannten Rohrtrenner enthalten einen stromaufwärtigen, d.h. auf der Seite des Trinkwassersystems angeordneten, und einen stromabwärtigen, d.h. auf der Seite des Brauchwassersystems angeordneten Rückflußverhinderer. Beide Rückflußverhinderer öffnen in Richtung auf das Brauchwassersystem hin. Zwischen den Rückflußverhinderern ist ein druckgesteuertes Entlastungsventil angeordnet. Dieses Entlastungsventil ist von dem Trinkwasserdruck gesteuert und öffnet automatisch, wenn der Trinkwasserdruck wegfällt oder absinkt. Wenn somit das Brauchwassersystem aus dem Trinkwassersystem gefüllt oder nachgefüllt wird und ein dafür ausreichender Trinkwasserdruck vorhanden ist, dann wird das Entlastungsventil von diesem Druck geschlossen. Es fließt Trinkwasser über die von dem Trinkwasserdruck aufgedrückten Rückflußverhinderer in das Brauchwassersystem. Wenn aber der Trinkwasserdruck unter ein vorgegebenes Maß absinkt, sei es weil ein Absperrventil das Trinkwassersystem absperrt, sei es weil der Trinkwasserdruck aus irgendeinem Grund zusammenbricht, öffnet das Entlastungsventil. Selbst wenn dann über einen lecken Rückflußverhinderer Brauchwasser aus dem Brauchwassersystem zurückfließt, fließt dieses zurückfließende Brauchwasser über den Ablaufab und kann auf keinen Fall in das Trinkwassersystem gelangen.Since the removal of the hose after filling or refilling is annoying and can not be controlled fixed installations of "pipe cutters" are known (for example EP 0 972 995 A1 ). These known pipe separators contain an upstream, that is arranged on the side of the drinking water system, and a downstream, ie arranged on the side of the process water system backflow preventer. Both non-return valves open towards the domestic water system. Between the backflow preventer, a pressure-controlled relief valve is arranged. This relief valve is controlled by the drinking water pressure and opens automatically when the drinking water pressure drops or falls. Thus, if the service water system is filled or refilled from the drinking water system and therefor a sufficient drinking water pressure is present, then the relief valve is closed by this pressure. It flows through the drinking water pressure on the pressed backflow preventer into the service water system. But if the drinking water pressure falls below a predetermined level, be it because a shut-off valve shuts off the drinking water system, be it because the drinking water pressure breaks down for some reason, the relief valve opens. Even if then flows back via a leaking backflow preventer hot water from the service water system, this backflowing hot water flows over the Ablaufab and can not get into the drinking water system under any circumstances.

Durch die Firmendruckschrift "SYR Füllgruppe Typ 2128" der Hans Sasserath & Co. KG ist eine Füllgruppe bekannt, die an dem Brauchwassersystem, z.B. einer geschlossenen Heizungsanlage, fest installiert ist und einen Anschluß für einen Schlauch aufweist. Über den so anzuschließenden Schlauch wird die Füllgruppe mit einem Trinkwassersystem verbunden. Die Füllgruppe enthält ein Absperrventil und einen Druckminderer.The company publication "SYR Filling Group Type 2128" by Hans Sasserath & Co. KG discloses a filling group which is attached to the process water system, e.g. a closed heating system, is permanently installed and has a connection for a hose. The filling group is connected to a drinking water system via the hose to be connected. The filling group contains a shut-off valve and a pressure reducer.

Der Erfindung liegt die Aufgabe zugrunde, den Füllvorgang mit einer Rohrtrenneranordnung der eingangs genannten Art zu vereinfachen und zu erleichtern.The invention has for its object to simplify the filling process with a pipe separator arrangement of the type mentioned and facilitate.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß ein mit einem Einlaßanschluß und einem Auslaßanschluß fest zwischen ein Trinkwassersystem und ein Brauchwassersystem installierbares, die Rückflußverhinderer und das Entlastungsventil enthaltendes Rohrtrennergehäuse stromauf von dem stromaufwärtigen Rückflußverhinderer im Strömungsweg integriert ein Absperrventil und einen Druckminderer aufweist.According to the invention, this object is achieved in that an installable with an inlet port and an outlet port between a drinking water system and a service water system, the backflow preventer and the relief valve containing upstream of the upstream backflow preventer in the flow path has a shut-off valve and a pressure reducer.

Eine solche Rohrtrenneranordnung ist fest zwischen Trinkwassersystem und Brauchwassersystem, z.B. eine Warmwasser-Zentralheizungsanlage, installiert. Zum Füllen oder Nachfüllen braucht keine Schlauchverbindung hergestellt zu werden. Das erleichtert die Handhabung. Durch das automatische Öffnen des Entlastungsventils bei Wegfall einer Druckdifferenz zwischen Trinkwassersystem und Brauchwassersystem ist in diesem Fall eine mechanische Trennung der Systeme gewährleistet. Durch einen eingebauten Druckminderer wird sichergestellt, daß der Druck im Brauchwassersystem einen vorgegebenen Wert nicht überschreiten kann. Wenn der Druck im Brauchwassersystem den am Druckminderer eingestellten Druck erreicht, schließt das Ventil des Druckminderers und unterbricht damit den Füllvorgang, auch wenn der Druck im Trinkwassersystem höher sein sollte. Der Druckminderer bietet eine zusätzliche Sicherheit gegen einen Rückfluß von Brauchwasser in das Trinkwassersystem. Durch das Absperrventil kann der Füllvorgang unterbrochen und das Trinkwassersystem im Normalbetrieb sicher von dem Brauchwassersystem getrennt werden, unabhängig z.B. von den Rückflußverhinderern. Die ganze Rohrtrenneranordnung ist eine kompakte und leicht zu installierende Baugruppe.Such a pipe separator arrangement is fixed between drinking water system and service water system, e.g. a hot water central heating system, installed. To fill or refill no hose connection needs to be made. This facilitates handling. Due to the automatic opening of the relief valve when there is no pressure difference between the drinking water system and the service water system, a mechanical separation of the systems is ensured in this case. A built-in pressure reducer ensures that the pressure in the service water system can not exceed a predetermined value. When the pressure in the service water system reaches the pressure set at the pressure reducer, the pressure reducer valve closes, interrupting the filling even if the pressure in the potable water system is higher. The pressure reducer provides additional security against a backflow of service water into the drinking water system. Through the shut-off valve, the filling process can be interrupted and the drinking water system can be safely separated from the service water system in normal operation, independently e.g. from the backflow preventers. The entire pipe separator assembly is a compact and easy to install assembly.

Bei einer bevorzugten Ausführung der Erfindung sind die Rückflußverhinderer und das Entlastungsventil zu einer Baugruppe vereinigt, die als Ganzes herausziehbar in das die Trink- und Brauchwasseranschlüsse und den Ablauf aufweisendes Rohrtrennergehäuse einsetzbar sind. Das Entlastungsventil bildet einen Ventilschieber, der auf einer Stirnfläche von dem Trinkwasserdruck und auf der gegenüberliegenden Stirnfläche von dem Druck in einem Raum zwischen den Rückflußverhinderern beaufschlagt ist und durch den in der Schließstellung eine mit dem Ablauf verbundene seitliche Ablauföffnung des Rohrtrennergehäuses abdeckbar ist.In a preferred embodiment of the invention, the backflow preventer and the relief valve are combined to form an assembly, which can be used as a whole in a pull-out in which the drinking and service water connections and the drainage having Rohrtrennergehäuse. The relief valve forms a valve spool, which is acted upon on an end face of the drinking water pressure and on the opposite end face of the pressure in a space between the backflow preventer and by the closed position in the closed position associated with the outlet side drain opening of the Rohrtrennergehäuses.

Das Rohrtrennergehäuse weist einen Einlaßanschluß auf einer Einlaßseite und einen damit fluchtenden Auslaßanschluß auf der gegenüberliegenden Auslaßseite auf, die eine gemeinsame Achse definieren. In dem Rohrtrennergehäuse ist eine Aufnahmebohrung gebildet, deren Achse mit der gemeinsamen Achse von Einlaß- und Auslaßanschluß einen Winkel bildet und einerseits auf der Auslaßseite unmittelbar mit dem Auslaßanschluß in Verbindung steht und andererseits auf der Einlaßseite über einen Verbindungskanal mit dem Einlaßanschluß verbunden ist. Die Aufnahmebohrung ist auf der Einlaßseite offen und durch einen Stopfen verschließbar. Die Baugruppe mit Rückflußverhinderern und Entlastungsventil ist in die Aufnahmebohrung eingesetzt. Ein Ablaufanschluß zweigt von der Aufnahmebohrung ab. Das Absperrventil und der Druckminderer sind im Strömungsweg stromauf von dem stromaufwärtigen Rückflußverhinderer angeordnet.The Rohrtrennergehäuse has an inlet port on an inlet side and an aligned outlet port on the opposite outlet side, the one define common axis. In the pipe separator housing a receiving bore is formed, whose axis forms an angle with the common axis of the inlet and outlet port and on the outlet side is directly on the outlet side in communication and on the other hand connected on the inlet side via a connecting channel with the inlet port. The receiving bore is open on the inlet side and closed by a plug. The assembly with backflow preventer and relief valve is inserted into the receiving bore. A drain connection branches off from the receiving bore. The check valve and the pressure reducer are arranged in the flow path upstream of the upstream backflow preventer.

Vorzugsweise ist das Absperrventil ein in einem Einlaßkanal unmittelbar hinter dem Einlaßanschluß auf der gemeinsamen Achse von Einlaß- und Auslaßanschluß sitzendes Kugelventil. An dem Rohrtrennergehäuse ist ein Stutzen angeformt, der eine zylindrische Aufnahme bildet. Ein erster Abschnitt des Verbindungskanals mündet ausgehend von dem Einlaßkanal hinter dem Kugelventil im oberen Teil der Mantelfläche der Aufnahme. Ein zweiter Abschnitt des Verbindungskanals geht vom unteren Teil der Mantelfläche der Aufnahme aus und mündet in der Aufnahmebohrung stromauf von dem stromaufwärtigen Rückflußverhinderer. Ein als geschlossene Baugruppe ausgebildeter Druckminderer ist in die Aufnahme des Stutzens eingesetzt. Die beiden Abschnitte des Verbindungskanals verlaufen im wesentlichen zueinander parallel und unter einem Winkel zu der gemeinsamen Achse von Einlaß- und Auslaßanschluß.Preferably, the shut-off valve is a ball valve seated in an inlet passage immediately behind the inlet port on the common axis of the inlet and outlet ports. At the Rohrtrennergehäuse a nozzle is formed, which forms a cylindrical receptacle. A first portion of the connecting channel opens, starting from the inlet channel behind the ball valve in the upper part of the lateral surface of the receptacle. A second portion of the connecting channel extends from the lower part of the lateral surface of the receptacle and opens into the receiving bore upstream of the upstream backflow preventer. A trained as a closed module pressure reducer is inserted into the receptacle of the nozzle. The two portions of the connecting channel are substantially parallel to each other and at an angle to the common axis of the inlet and outlet ports.

Vorteilhafterweise sind an dem Rohrtrennergehäuse Prüfanschlüsse für den Eingangsdruck, den Ausgangsdruck und den Mitteldruck zwischen den Rückflußverhinderern vorgesehen.Advantageously, test connections for the inlet pressure, the outlet pressure and the mean pressure between the backflow preventer are provided on the pipe separator housing.

Ein Ausführungsbeispiel einer erfindungsgemäßen Rohrtrenneranordnung oder Füllgruppe ist nachstehend unter Bezugnahme auf die zugehörigen Zeichnungen näher erläutert.

Fig.1
zeigt einen Längsschnitt einer Füllgruppe mit Absperrventil und Druckminderer.
Fig.2
zeigt eine Ansicht der Füllgruppe von links in Fig. 1
An embodiment of a pipe separator arrangement or filling group according to the invention is explained below with reference to the accompanying drawings.
Fig.1
shows a longitudinal section of a filling group with shut-off valve and pressure reducer.
Fig.2
shows a view of the filling group from the left in Fig. 1

In Fig.1 ist mit 10 ein Rohrtrennergehäuse bezeichnet. Das Rohrtrennergehäuse 10 weist einen Einlaßanschluß 12 auf einer Einlaßseite und einen Auslaßanschluß 14 auf einer Auslaßseite auf. Einlaßanschluß 12 und Auslaßanschluß 14 sind gleichachsig mit einer gemeinsamen Achse 16 auf gegenüberliegenden Seiten des Rohrtrennergehäuses 10 angeordnet. In dem Rohrtrennergehäuse 10 ist eine Aufnahmebohrung 18 vorgesehen. Die Achse der Aufnahmebohrung 18 bildet mit der Achse 16 von Einlaßanschluß 12 und Auslaßanschluß 14 einen spitzen Winkel. Die Aufnahmebohrung 18 steht auf der Auslaßseite unmittelbar mit einem Auslaßkanal 20 des Auslaßanschlusses in Verbindung. Auf der Einlaßseite ist die Aufnahmebohrung 18 offen und durch einen Stopfen 22 abschließbar. In der Aufnahmebohrung 18 sitzt eine Rohrtrennerpatrone 24 mit einem stromaufwärtigen Rückflußverhinderer 26, einem stromabwärtigen Rückflußverhinderer 28 und einem in der Wasserströmung dazwischen angeodneten, als Schieberventil ausgebildeten Entlastungsventil 30. Die Rückflußverhinderer 26 und 28 und das Entlastungsventil 30 sind zu einer Baugruppe vereinigt, die als Ganzes herausziehbar in die Aufnahmebohrung 18 einsetzbar ist. Das Entlastungsventil 30 bildet einen Ventilschieber, der auf einer Stirnfläche von dem Trinkwasserdruck und auf der gegenüberliegenden Stirnfläche von dem Druck in einem Raum zwischen den Rückflußverhinderern 26 und 28 beaufschlagt ist. Von der Aufnahmebohrung 18 geht ein Ablauf 32 ab. Die Achse des Ablaufs verläuft in der durch die Achse 16 und die Achse der Aufnahmebohrung 18 bestimmten Ebene und senkrecht zu der Achse 16. Durch den Ventilschieber ist in der Schließstellung eine mit dem Ablauf 32 verbundene seitliche Ablauföffnung des Rohrtrennergehäuses 10 abdeckbar.In Fig.1 is denoted by 10 a Rohrtrennergehäuse. The pipe separator housing 10 has an inlet port 12 on an inlet side and an outlet port 14 on an outlet side. Inlet port 12 and outlet port 14 are coaxially disposed with a common axis 16 on opposite sides of the pipe separator housing 10. In the pipe separator housing 10, a receiving bore 18 is provided. The axis of the receiving bore 18 forms with the axis 16 of the inlet port 12 and outlet port 14 at an acute angle. The receiving bore 18 is on the outlet side directly with an outlet channel 20 of the outlet port in combination. On the inlet side, the receiving bore 18 is open and lockable by a plug 22. In the receiving bore 18 sits a Rohrtrennerpatrone 24 with an upstream Rückwärtsverhinderer 26, a downstream Rückwärtsverhinderer 28 and an interposed in the water flow therebetodean, designed as a slide valve relief valve 30. The backflow preventer 26 and 28 and the relief valve 30 are combined into an assembly, as a whole pulled out into the receiving bore 18 can be used. The relief valve 30 forms a valve spool, which is acted upon on an end face of the drinking water pressure and on the opposite end face of the pressure in a space between the backflow preventers 26 and 28. From the receiving bore 18 is a drain 32. The axis of the drain extends in the plane determined by the axis 16 and the axis of the receiving bore 18 and perpendicular to the axis 16. By the valve slide in the closed position connected to the drain 32 side drain opening of the pipe separator housing 10 can be covered.

Das einlaßseitige Ende der Aufnahmebohrung 18 ist über einen Verbindungskanal, der generell mit 34 bezeichnet ist, mit einem Einlaßkanal 36 des Einlaßanschlusses 12 verbunden. In dem Einlaßkanal 36 sitzt ein als Kugelventil ausgebildetes Absperrventil 38 mit einem Stellhebel 40.The inlet end of the receiving bore 18 is connected via a connecting channel, which is generally designated 34, with an inlet channel 36 of the inlet port 12. In the inlet channel 36 sits a ball valve designed as a check valve 38 with a lever 40th

An dem Rohrtrennergehäuse 10 ist ein Stutzen 42 angeformt, der eine zylindrische Aufnahme 44 bildet. Der Verbindungskanal 34 besteht aus zwei Abschnitten: Ein erster Abschnitt 46 verläuft von dem Einlaßkanal 36 stromab von dem Absperrventil 38 zu der Aufnahme 44 und mündet im oberen Teil der Mantelfläche der Aufnahme 44. Ein zweiter Abschnitt 48 des Verbindungskanals 34 geht vom unteren Teil der Mantelfläche der Aufnahme 44 aus und mündet in der Aufnahmebohrung 18 stromauf von dem stromaufwärtigen Rückflußverhinderer 26. In die Aufnahme 44 ist ein als geschlossene Baugruppe ausgebildeter Druckminderer 50 abdichtend eingesetzt. Der Ventildurchgang des Druckminderers 50 beherrscht die Verbindung zwischen den Abschnitten 46 und 48 des Verbindungskanals 34.On the pipe separator housing 10, a nozzle 42 is formed, which forms a cylindrical receptacle 44. The connecting channel 34 consists of two sections: A first portion 46 extends from the inlet channel 36 downstream of the shut-off valve 38 to the receptacle 44 and opens in the upper part of the lateral surface of the receptacle 44. A second portion 48 of the connecting channel 34 extends from the lower part of the lateral surface the receptacle 44 and opens into the receiving bore 18 upstream of the upstream Rückwärtsverhinderer 26. In the receptacle 44 designed as a closed assembly pressure reducer 50 is sealingly inserted. The valve passage of the pressure reducer 50 controls the connection between the sections 46 and 48 of the connection channel 34.

Eine Querbohrung 52 verbindet die Aufnahme 44 stromab von dem Regelventil des Druckminderers 50 mit Prüfanschlüssen 54A und 54B zum Anschluß eines Manometers wahlweise auf der einen oder der anderen Seite je nach Installation der Füllarmatur. Die Prüfanschlüsse sind durch Stopfen 56A bzw. 56B verschlossen. Über diese Prüfanschlüsse kann der Druck stromauf von dem stromaufwärtigen Rückflußverhinderer 26 gemessen werden. Ein weiterer Prüfanschluß 58 geht von der Aufnahmebohrung 18 zwischen den stromaufwärtigen Rückflußverhinderer 26 und dem stromabwärtigen Rückflußverhinderer 28 ab. Der Prüfanschluß 58 ist durch einen Stopfen 60 verschlossen. Über diesen Prüfanschluß 58 kann ein Manometer angeschlossen werden, welches den Druck zwischen stromaufwärtigem und stromabwärtigen Rückflußverhinderer zu kontrollieren gestattet. Schließlich ist ein Prüfanschluß 62 vorgesehen, der von dem Auslaßkanal 20 abgeht. An diesen Prüfanschluß ist ein Manometer 64 angeschlossen.A transverse bore 52 connects the receptacle 44 downstream of the control valve of the pressure reducer 50 with test ports 54A and 54B for connecting a pressure gauge either on one side or the other depending on the installation of the filling valve. The test ports are closed by plugs 56A and 56B, respectively. Through these test ports, the pressure upstream of the upstream backflow preventer 26 can be measured. Another test port 58 departs from the receiving bore 18 between the upstream backflow preventer 26 and the downstream backflow preventer 28. The test port 58 is closed by a plug 60. Through this test port 58, a pressure gauge can be connected, which allows to control the pressure between the upstream and downstream backflow preventer. Finally, a test port 62 is provided, which goes off from the outlet passage 20. At this test port, a pressure gauge 64 is connected.

Claims (8)

  1. Valve assembly for separating a service water system from a drinking water system the service water system being arranged to be filled or re-filled from said drinking water system comprising upstream and downstream backflow preventers (26, 28) which both close in the direction from the service water system to the drinking water system and a relief valve (30), which is exposed to the pressure of the drinking water system in the closing direction and which is adapted to connect the space between the backflow preventers (26, 28) to an outlet (32) when such pressure drops characterized in that a pipe disconnector housing (10) is provided with a stop valve (38) and a pressure reducer (50) integrated in the flow path upstream of the upstream backflow preventer (26), the housing being adapted to be fixedly installed between a drinking water system and a service water system with an inlet socket (12) and an outlet socket (14) and comprising the backflow preventers (26, 28) and the relief valve (30).
  2. Pipe disconnector assembly according to claim 1, characterized in that
    (a) the backflow preventers (26, 28) and the relief valve (30) are integrated in one assembly (24) which is adapted to be completely releaseably inserted into the pipe disconnector housing having the drinking water socket (12) and the service water socket (14) and the outlet (32), and
    (b) the relief valve (30) forms a valve slide pressurized on its end face by the drinking water pressure and on the opposite surface by a pressure in the space between the backflow preventers (26, 28) and which is adapted to cover an outlet opening connected to the outlet socket (32) of the pipe disconnector housing (10) in a closed position.
  3. Pipe disconnector assembly according to claim 2, characterized in that the pipe disconnector housing (10)
    (a) is provided with an inlet socket (12) on the inlet side and in alignment therewith with an outlet socket (14) on the opposite outlet side which both define a common axis (16),
    (b) a receiving bore (18) is formed in the pipe disconnector housing (10), the axis of the receiving bore forming an angle with the common axis of the inlet- and outlet socket (12, 14) and on one side is directly connected to the outlet socket (14) on the outlet side and on the other side is connected through the connection passage (34) with the inlet socket (12) on the inlet side,
    (c) the receiving bore (18) is open on the inlet side and adapted to be closed by a plug (22),
    (d) the assembly (24) is inserted into the receiving bore (18) with the backflow preventers (26, 28) and the relief valve (30), and
    (e) the outlet socket (32) branches off from the receiving bore (18).
  4. Pipe disconnector assembly according to claim 3, characterized in that the pressure reducer (50) is arranged in the connection passage (34).
  5. Pipe disconnector assembly according to claim 4, characterized in that the stop valve (38) is a ball valve arranged in the inlet passage (36) directly behind the inlet socket (12) on the common axis (16) of the inlet- and outlet socket (12, 14).
  6. Pipe disconnector assembly according to claim 5, characterized in that
    (a) a socket (42) is integrated into the pipe disconnector housing (10) forming a cylindric receiving portion (44),
    (b) a first section (46) of the connection passage (34) starting from the inlet passage (36) ends behind the ball valve in the upper portion of the periferal surface of the receiving portion (44),
    (c) a second section (48) of the connection passage (34) starting from the lower portion of the periferal surface of the receiving portion (44) ends in the receiving bore (18) upstream from the upstream backflow preventer (26), and
    (d) a pressure reducer (50) in the form of a closed assembly is inserted into the receiving portion (44) of the socket (42).
  7. Pipe disconnector assembly according to claim 6, characterized in that the two sections (46, 48) of the connection passage (34) are essentially parallel and extend with an angle regarding the common axis (16) of the inlet- and outlet socket (12, 14).
  8. Pipe disconnector assembly according to any of claims 1 to 7, characterized in that test connections (54A, 54B, 62, 58) are provided at the pipe disconnector housing (10) for testing the inlet pressure, the outlet pressure and the middle pressure between the backflow preventers (26, 28).
EP04003460A 2003-02-27 2004-02-17 Valve arrangement for a back flow preventer Expired - Lifetime EP1452652B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10308838A DE10308838A1 (en) 2003-02-27 2003-02-27 Valve arrangement for a pipe separator
DE10308838 2003-02-27

Publications (3)

Publication Number Publication Date
EP1452652A2 EP1452652A2 (en) 2004-09-01
EP1452652A3 EP1452652A3 (en) 2006-04-26
EP1452652B1 true EP1452652B1 (en) 2008-05-21

Family

ID=32748124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04003460A Expired - Lifetime EP1452652B1 (en) 2003-02-27 2004-02-17 Valve arrangement for a back flow preventer

Country Status (3)

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EP (1) EP1452652B1 (en)
AT (1) ATE396309T1 (en)
DE (2) DE10308838A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005010139B4 (en) * 2004-12-29 2013-11-28 Hans Sasserath & Co. Kg Pipe separator arrangement
DE102004063747B4 (en) * 2004-12-29 2006-10-26 Hans Sasserath & Co Kg Pipe separator arrangement
DE102006021800B3 (en) * 2006-05-08 2008-02-07 Hans Sasserath & Co. Kg Fittings kit for loading or refilling heating systems
DE102007005215B3 (en) * 2007-01-29 2008-06-19 Hans Sasserath & Co Kg Scanning system includes sensor with transport module and bearing section as well as device for mounting the module
DE102011106265A1 (en) * 2011-05-12 2012-11-15 Honeywell Technologies Sarl Device for handling a liquid medium
CN203361295U (en) * 2012-03-13 2013-12-25 纽珀有限公司 Back-flower stopper for hip bathing device
DE202012002585U1 (en) * 2012-03-13 2013-06-17 Neoperl Gmbh Backflow barrier for a shower
DE102013102460A1 (en) * 2013-03-12 2014-09-18 Hans Sasserath & Co. Kg Heating fittings
DE202016104221U1 (en) 2016-08-01 2016-10-10 Honeywell Technologies Sarl Backflow

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3435127A1 (en) * 1984-09-25 1986-04-03 Hans Sasserath & Co Kg, 4052 Korschenbroich FILLING DEVICE FOR FILLING CLOSED SYSTEMS
EP0972995A1 (en) * 1998-07-16 2000-01-19 Hans Sasserath & Co Kg Filling armature for filling a closed hot water heating system

Also Published As

Publication number Publication date
DE10308838A1 (en) 2004-09-09
EP1452652A3 (en) 2006-04-26
DE502004007184D1 (en) 2008-07-03
EP1452652A2 (en) 2004-09-01
ATE396309T1 (en) 2008-06-15

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