EP0182004A3 - Protecting device for drinking-water conduit pipes - Google Patents

Protecting device for drinking-water conduit pipes Download PDF

Info

Publication number
EP0182004A3
EP0182004A3 EP85109012A EP85109012A EP0182004A3 EP 0182004 A3 EP0182004 A3 EP 0182004A3 EP 85109012 A EP85109012 A EP 85109012A EP 85109012 A EP85109012 A EP 85109012A EP 0182004 A3 EP0182004 A3 EP 0182004A3
Authority
EP
European Patent Office
Prior art keywords
valve
water
duct
servo
pressure
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.)
Granted
Application number
EP85109012A
Other languages
German (de)
Other versions
EP0182004A2 (en
EP0182004B1 (en
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 TE GEVELSBERG, BONDSREPUBL
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 AT85109012T priority Critical patent/ATE33278T1/en
Publication of EP0182004A2 publication Critical patent/EP0182004A2/en
Publication of EP0182004A3 publication Critical patent/EP0182004A3/en
Application granted granted Critical
Publication of EP0182004B1 publication Critical patent/EP0182004B1/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

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)
  • Safety Valves (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Devices For Dispensing Beverages (AREA)

Abstract

1. Device for the protection of drinking-water ducts (1) leading to positions of use against back-flowing used water, with a tubular separator (3) located in the drinking-water duct behind a supply valve (2) and including an axially-movable piston separator tube (26) in a cylinder provided with a supply line, which, with the supply valve (2) open, moves against spring action into a discharge connection (7) provided with a non-return valve (8) and is then traversed by water and, in contrast, with the supply valve (2) closed, moves into its separating position remote from the discharge connection (7), as well as with a pressure-control cylinder (2') containing the pressure-control piston (22) controlling the supply valve (2) having operating chambers disposed on both sides of the pressure-control piston (22) which are to be connected via a servo-control valve (4) provided with a servo-control piston (35) with a water supply and a discharge duct, wherein the servo-control piston (35) is operable by the water pressure on the one hand in the water duct and on the other hand in the used water duct, characterised in that the servo-control valve (4) is provided on the used water duct with a holding valve (6), which is located in a by-pass duct (9) parallel to the discharge connection (7) of the separator (3) and bridging over the non-return valve (8) and contains a valve piston (48) arranged to move under the flow water pressure prevailling there, which in its shifted position bridges the connection (10) between the servo-control valve (4) and the used water duct (5).
EP85109012A 1984-11-23 1985-07-19 Protecting device for drinking-water conduit pipes Expired EP0182004B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85109012T ATE33278T1 (en) 1984-11-23 1985-07-19 DEVICE FOR PROTECTING DRINKING WATER PIPES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3442748 1984-11-23
DE19843442748 DE3442748A1 (en) 1984-11-23 1984-11-23 DEVICE FOR PROTECTING DRINKING WATER PIPES

Publications (3)

Publication Number Publication Date
EP0182004A2 EP0182004A2 (en) 1986-05-28
EP0182004A3 true EP0182004A3 (en) 1986-12-17
EP0182004B1 EP0182004B1 (en) 1988-03-30

Family

ID=6250983

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85109012A Expired EP0182004B1 (en) 1984-11-23 1985-07-19 Protecting device for drinking-water conduit pipes

Country Status (3)

Country Link
EP (1) EP0182004B1 (en)
AT (1) ATE33278T1 (en)
DE (2) DE3442748A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3520250A1 (en) * 1985-06-05 1986-12-11 Grünbeck Wasseraufbereitung GmbH, 8884 Höchstädt TUBE DISCONNECTOR
DE3626825A1 (en) * 1986-08-08 1988-02-18 Gruenbeck Josef Wasseraufb PIPE SEPARATION WITH A LOCKING DEVICE AND A MONITORING DEVICE FOR THE LOCKING DEVICE
DE3703715A1 (en) * 1987-02-06 1988-08-18 Schubert & Salzer Maschinen CONTROL VALVE FOR A TUBE DISCONNECTOR CONTROLLABLE FROM A DRIVE CHAMBER
ATE53878T1 (en) * 1987-08-31 1990-06-15 Honeywell Braukmann Gmbh DRINKING WATER FLOW FITTING.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3276465A (en) * 1963-01-18 1966-10-04 Donald G Griswold Backflow prevention device and relief valve control
DE2806310A1 (en) * 1978-02-15 1979-10-04 Waletzko Alfred Apparatebau Drinking water pipe reverse flow protection equipment - has pressure control valve opening unloader pipe before separator unit
DE2849825A1 (en) * 1978-11-17 1980-05-29 Waletzko Alfred Apparatebau Drinking water supply duct valve flow monitor - is in narrow by=pass duct, and main duct has return flow check

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3276465A (en) * 1963-01-18 1966-10-04 Donald G Griswold Backflow prevention device and relief valve control
DE2806310A1 (en) * 1978-02-15 1979-10-04 Waletzko Alfred Apparatebau Drinking water pipe reverse flow protection equipment - has pressure control valve opening unloader pipe before separator unit
DE2849825A1 (en) * 1978-11-17 1980-05-29 Waletzko Alfred Apparatebau Drinking water supply duct valve flow monitor - is in narrow by=pass duct, and main duct has return flow check

Also Published As

Publication number Publication date
DE3562030D1 (en) 1988-05-05
EP0182004A2 (en) 1986-05-28
EP0182004B1 (en) 1988-03-30
DE3442748A1 (en) 1986-05-28
ATE33278T1 (en) 1988-04-15

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