DE3362357D1 - Back-flow preventer, especially for drinking-water conduits - Google Patents

Back-flow preventer, especially for drinking-water conduits

Info

Publication number
DE3362357D1
DE3362357D1 DE8383111815T DE3362357T DE3362357D1 DE 3362357 D1 DE3362357 D1 DE 3362357D1 DE 8383111815 T DE8383111815 T DE 8383111815T DE 3362357 T DE3362357 T DE 3362357T DE 3362357 D1 DE3362357 D1 DE 3362357D1
Authority
DE
Germany
Prior art keywords
piston
duct
flow
actuating
aperture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE8383111815T
Other languages
German (de)
Inventor
Walter Eichner
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.)
Ecolab Engineering GmbH
Original Assignee
Lang Apparatebau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lang Apparatebau GmbH filed Critical Lang Apparatebau GmbH
Priority to DE8383111815T priority Critical patent/DE3362357D1/en
Application granted granted Critical
Publication of DE3362357D1 publication Critical patent/DE3362357D1/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
    • E03C1/104—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves using a single check valve
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
    • E03C1/108—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves having an aerating valve

Abstract

1. Return flow inhibitor, particularly for drinking water pipes, with an essentially cruciform housing (1), which has a lateral supply duct (2), a discharge duct (3) opposite the latter, a flow aperture (6) between the two, an outlet aperture (8) located at a spacing therebelow and connected to the discharge duct (3) by means of a downwardly-directed leakage water duct (9) as well as, above the flow aperture (6), an actuating chamber (12), continuously connected to the supply duct (2), for a closure piston (15) projecting therein with its upper actuating end, which is axially movable against a spring force under the action of the supply water pressure and which thereby causes the flow opening (6) and the outlet aperture (8) selectively to close or open, characterized in that the closure piston (15) is constructed as a stepped piston, in its lower region (15') controlling the flow and outlet apertures (6, 8), and is connected above with an actuating piston (14) sealingly guided in the actuating chamber (12) spatially separated from the supply duct (2) and both piston (14, 15) are traversed longitudinally by a sealing and abutment stem (18) fixed to the housing, which, with the piston (14, 15) surrounding it, defines a narrow bleed duct (22) which extends between the actuating chamber (12) and the leakage water duct (9) and is closable in the two end positions of the closure piston (15).
DE8383111815T 1983-03-16 1983-11-25 Back-flow preventer, especially for drinking-water conduits Expired DE3362357D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8383111815T DE3362357D1 (en) 1983-03-16 1983-11-25 Back-flow preventer, especially for drinking-water conduits

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3309318A DE3309318A1 (en) 1983-03-16 1983-03-16 BACKFLOW PREVENTORS, ESPECIALLY FOR DRINKING WATER PIPES
DE8383111815T DE3362357D1 (en) 1983-03-16 1983-11-25 Back-flow preventer, especially for drinking-water conduits

Publications (1)

Publication Number Publication Date
DE3362357D1 true DE3362357D1 (en) 1986-04-03

Family

ID=6193573

Family Applications (2)

Application Number Title Priority Date Filing Date
DE3309318A Withdrawn DE3309318A1 (en) 1983-03-16 1983-03-16 BACKFLOW PREVENTORS, ESPECIALLY FOR DRINKING WATER PIPES
DE8383111815T Expired DE3362357D1 (en) 1983-03-16 1983-11-25 Back-flow preventer, especially for drinking-water conduits

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE3309318A Withdrawn DE3309318A1 (en) 1983-03-16 1983-03-16 BACKFLOW PREVENTORS, ESPECIALLY FOR DRINKING WATER PIPES

Country Status (3)

Country Link
EP (1) EP0119305B1 (en)
AT (1) ATE18272T1 (en)
DE (2) DE3309318A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE27323T1 (en) * 1985-01-30 1987-06-15 Honeywell Braukmann Gmbh PIPE SEPARATOR.
DE3509720A1 (en) * 1985-03-18 1986-09-25 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt TUBE DISCONNECTOR
DE3611452C1 (en) * 1986-04-05 1987-08-13 Oventrop Sohn Kg F W Pipe disconnector
CN108755722A (en) * 2018-08-18 2018-11-06 中铁二院昆明勘察设计研究院有限责任公司 The drainage arrangement and water discharge method in tunnel and underground structure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2729305B2 (en) * 1977-06-29 1980-04-17 F.W. Oventrop Arn. Sohn Kg, 5787 Olsberg Pipe separator
DE2751468C2 (en) * 1977-11-18 1984-06-28 Honeywell-Braukmann GmbH, 6950 Mosbach Backflow preventer

Also Published As

Publication number Publication date
EP0119305A1 (en) 1984-09-26
EP0119305B1 (en) 1986-02-26
ATE18272T1 (en) 1986-03-15
DE3309318A1 (en) 1984-09-20

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee