EP1267004A3 - Back flow preventer - Google Patents

Back flow preventer Download PDF

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Publication number
EP1267004A3
EP1267004A3 EP02011012A EP02011012A EP1267004A3 EP 1267004 A3 EP1267004 A3 EP 1267004A3 EP 02011012 A EP02011012 A EP 02011012A EP 02011012 A EP02011012 A EP 02011012A EP 1267004 A3 EP1267004 A3 EP 1267004A3
Authority
EP
European Patent Office
Prior art keywords
valve
pressure zone
water system
medium pressure
sleeve
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.)
Withdrawn
Application number
EP02011012A
Other languages
German (de)
French (fr)
Other versions
EP1267004A2 (en
Inventor
Willi Hecking
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.)
Hans Sasserath GmbH and Co KG
Original Assignee
Hans Sasserath GmbH and Co KG
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 Hans Sasserath GmbH and Co KG filed Critical Hans Sasserath GmbH and Co KG
Publication of EP1267004A2 publication Critical patent/EP1267004A2/en
Publication of EP1267004A3 publication Critical patent/EP1267004A3/en
Withdrawn legal-status Critical Current

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Classifications

    • 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

Abstract

Die Erfindung betrifft einen Rohrtrenner zum Trennen eines aus einem Trinkwassersystem auf- oder nachfüllbaren Brauchwassersystems von diesem Trinkwassersystem mit einem stromaufwärtigen und einem stromabwärtigen Rückflußverhinderer und einem Ablaufventil, durch welches eine zwischen dem einlaufseitigen und dem ablaufseitigen Rückflußverhinderer angeordnete Mitteldruckzone mit einem Ablauf verbindbar ist. Das Ablaufventil ist gegen eine Rückstellkraft von der Differenz der Drücke des Trinkwassersystems und der Mitteldruckzone in Schließstellung bewegbar ist. Die Erfindung bezweckt, einen Rohrtrenner so auszubilden, daß bei kompakter Bauweise ein großer Durchflußquerschnitt in Füllrichtung realisiert werden kann. Zu diesem Zweck ist die Mitteldruckzone (124) von einer Kammer in einem topfförmigen, Gehäuse (114) gebildet, welche durch eine ringförmige Ringmembran (170) abgeschlossen ist. Der Ventilschließkörper (116) weist einen hülsenförmigen Teil auf, der mit dem Innenrand der ringförmigen Ringmembran (170) verbunden ist und am anderen Ende durch einen Ventilteller (162) abgeschlossen ist. Der Ventilteller wirkt mit einem Ventilsitz (156) am Boden des Gehäuses zusammen. Das Innere des hülsenförmigen Teils ist mit einem Einlaßraum (178) und über seitliche Durchbrüche (198) mit der Mitteldruckzone (124) verbunden. Der stromaufwärtige Rückflußverhinderer sitzt in dem Inneren des hülsenförmigen Teils stromauf von den seitlichen Durchbrüchen. Der Boden des Gehäuses (114) ist doppelwandig und bildet eine Kammer bildet, welche über den Ventildurchgang des Ablaßventils (108) mit der Mitteldruckzone (124) verbindbar mit dem Ablaß (152) verbunden ist. Um den Ventildurchgang (154) herum ist ein Kranz von Stegen (140) mit Durchgängen (128,130,132,134) gebildet. Diese Durchgänge verbinden die Mitteldruckzone (124) mit dem Brauchwassersystem. Eine Mehrzahl von stromabwärtigen Durchflußverhinderern sitzen (106) in diesen Durchgängen.

Figure 00000001
The invention relates to a pipe separator for separating a domestic water system that can be refilled or refilled from a drinking water system from this drinking water system with an upstream and a downstream non-return valve and a drain valve, by means of which a medium-pressure zone arranged between the inlet-side and the outlet-side non-return valve can be connected to an outlet. The drain valve is movable against a restoring force from the difference in the pressures of the drinking water system and the medium pressure zone in the closed position. The invention aims to design a pipe separator so that a large flow cross-section in the filling direction can be realized with a compact design. For this purpose, the medium pressure zone (124) is formed by a chamber in a cup-shaped housing (114), which is closed off by an annular ring membrane (170). The valve closing body (116) has a sleeve-shaped part which is connected to the inner edge of the ring-shaped ring membrane (170) and is closed at the other end by a valve plate (162). The valve disk interacts with a valve seat (156) on the bottom of the housing. The interior of the sleeve-shaped part is connected to an inlet space (178) and to the medium pressure zone (124) via lateral openings (198). The upstream backflow preventer sits in the interior of the sleeve-shaped part upstream of the side openings. The bottom of the housing (114) is double-walled and forms a chamber which is connected to the drain (152) via the valve passage of the drain valve (108) with the medium pressure zone (124). A ring of webs (140) with passages (128, 130, 132, 134) is formed around the valve passage (154). These passages connect the medium pressure zone (124) with the domestic water system. A plurality of downstream flow restrictors sit (106) in these passages.
Figure 00000001
EP02011012A 2001-06-12 2002-05-17 Back flow preventer Withdrawn EP1267004A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001128435 DE10128435A1 (en) 2001-06-12 2001-06-12 backflow
DE10128435 2001-06-12

Publications (2)

Publication Number Publication Date
EP1267004A2 EP1267004A2 (en) 2002-12-18
EP1267004A3 true EP1267004A3 (en) 2003-09-17

Family

ID=7688002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02011012A Withdrawn EP1267004A3 (en) 2001-06-12 2002-05-17 Back flow preventer

Country Status (2)

Country Link
EP (1) EP1267004A3 (en)
DE (1) DE10128435A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL359448A1 (en) 2002-04-03 2003-10-06 Hans Sasserath & Co Kg Set of isolating valves for water supply system
DE102007030654A1 (en) * 2007-07-02 2009-01-08 Hans Sasserath & Co. Kg Pipe separator arrangement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747621A (en) * 1970-10-05 1973-07-24 Watts Regulator Co Backflow preventer
US3818929A (en) * 1973-04-23 1974-06-25 H Braukmann Reduced pressure backflow preventer valve
US4013089A (en) * 1975-09-17 1977-03-22 Braukmann Armaturen Ag Back flow preventer valve
EP1031368A1 (en) * 1999-02-24 2000-08-30 Hans Sasserath & Co Kg Filter condition indicator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747621A (en) * 1970-10-05 1973-07-24 Watts Regulator Co Backflow preventer
US3818929A (en) * 1973-04-23 1974-06-25 H Braukmann Reduced pressure backflow preventer valve
US4013089A (en) * 1975-09-17 1977-03-22 Braukmann Armaturen Ag Back flow preventer valve
EP1031368A1 (en) * 1999-02-24 2000-08-30 Hans Sasserath & Co Kg Filter condition indicator

Also Published As

Publication number Publication date
EP1267004A2 (en) 2002-12-18
DE10128435A1 (en) 2002-12-19

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