EP0851066A3 - Hydraulic three-chamber backflow preventer - Google Patents

Hydraulic three-chamber backflow preventer Download PDF

Info

Publication number
EP0851066A3
EP0851066A3 EP97109300A EP97109300A EP0851066A3 EP 0851066 A3 EP0851066 A3 EP 0851066A3 EP 97109300 A EP97109300 A EP 97109300A EP 97109300 A EP97109300 A EP 97109300A EP 0851066 A3 EP0851066 A3 EP 0851066A3
Authority
EP
European Patent Office
Prior art keywords
pressure
hydraulic
relief valve
back pressure
central zone
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Withdrawn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
EP97109300A
Other languages
German (de)
French (fr)
Other versions
EP0851066A2 (en
Inventor
Kurt Michael Dipl.-Ing. Desch
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0851066A2 publication Critical patent/EP0851066A2/en
Publication of EP0851066A3 publication Critical patent/EP0851066A3/en
Withdrawn legal-status Critical Current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
    • E03C1/106—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

Modifiziertes Hydraulisches-Drei-Kammer-Systemtrenngerät (BA), bei dem die vordruckseitige Rückflußverhinderung (P1 > Pi) und das Entlastungsventil zur Entleerung der Mittelzone (Pi), entgegen, wie bei den konventionellen BA-Geräten, dem Vordruck (P1) gegenüberliegend nicht mit Mitteldruck (Pi), sondern mit dem Druck hinter dem hinterdruckseitigen Rückflußverhinderer (34, 35, 36)(P2) beauflagt und hierbei sowohl der Dichtkegel (15) der vordruckseitigen Rückflußverhinderung (14, 15, 16, 17, 18, 20, 27, 23, 19) als auch der Dichtkegel (46) des Entlastungsventiles (46, 42, 48, 45, 47, 51, 50, 63, 49) gegenüber dem Druck (Pi) in der Mittelzone (4, 5, 21, 41) hydraulisch ausgeglichen sind. Es werden sowohl auf die vordruckseitige Rückflußverhinderung als auch auf das Entlastungsventil vom Mitteldruck (Pi) weder öffnende noch schließende Kräfte ausgeübt.Modified hydraulic three-chamber system separator (BA), in which the back pressure prevention on the upstream side (P 1 > Pi) and the relief valve for emptying the central zone (Pi), as with the conventional BA units, counter to the upstream pressure (P 1 ) on the opposite side not with medium pressure (Pi), but with the pressure behind the back-pressure check valve (34, 35, 36) (P2) and both the sealing cone (15) of the back pressure check valve (14, 15, 16, 17, 18, 20 , 27, 23, 19) and the sealing cone (46) of the relief valve (46, 42, 48, 45, 47, 51, 50, 63, 49) with respect to the pressure (Pi) in the central zone (4, 5, 21 , 41) are hydraulically balanced. Neither opening nor closing forces are exerted on both the pre-pressure backflow prevention and the relief valve from the medium pressure (Pi).

Das modifizierte Systemtrenngerät (BA) ist bei auftretendem Rückdruck, bei dichtem hinterdruckseitigen Rückflußverhinderer "selbstumschaltend".The modified system separator (BA) is when there is back pressure, with tight back pressure preventer "self-switching".

Mit dem Gerät können z. B. hydraulische Badewannen-Lifter abgesichert werden.With the device z. B. hydraulic bathtub lifters are secured.

EP97109300A 1996-06-10 1997-06-09 Hydraulic three-chamber backflow preventer Withdrawn EP0851066A3 (en)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
DE19623098 1996-06-10
DE19623098 1996-06-10
DE19634318 1996-08-24
DE19634318 1996-08-24
DE19636502 1996-09-09
DE19636502 1996-09-09
DE19640518 1996-10-01
DE19640518 1996-10-01
DE19708232 1997-02-28
DE19708232 1997-02-28
DE19715393 1997-04-14
DE19715393 1997-04-14

Publications (2)

Publication Number Publication Date
EP0851066A2 EP0851066A2 (en) 1998-07-01
EP0851066A3 true EP0851066A3 (en) 1999-03-17

Family

ID=27545045

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97109300A Withdrawn EP0851066A3 (en) 1996-06-10 1997-06-09 Hydraulic three-chamber backflow preventer

Country Status (2)

Country Link
EP (1) EP0851066A3 (en)
DE (1) DE19724321A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010052837A1 (en) 2010-03-03 2011-12-22 Kurt Michael Desch Hydraulic three-chamber system separating device, has control pistons pushed by force of over-lifting spring or movable back and forth based on reduced pressure differences during flow-through and idle position

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129352A1 (en) * 1990-09-05 1992-07-02 Kurt Michael Desch Hydraulic, three-chamber system separator - has feed side non-return valve formed by top prepressure stop piston and lower piston
DE4409104A1 (en) * 1993-03-20 1994-12-15 Desch Kurt Michael Improvements to a hydraulic three-chamber system separator BA (WITPU 135, SVGW)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4439050C2 (en) * 1993-11-02 2001-03-29 Kurt Michael Desch Combined bathtub inlet and overflow set

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129352A1 (en) * 1990-09-05 1992-07-02 Kurt Michael Desch Hydraulic, three-chamber system separator - has feed side non-return valve formed by top prepressure stop piston and lower piston
DE4409104A1 (en) * 1993-03-20 1994-12-15 Desch Kurt Michael Improvements to a hydraulic three-chamber system separator BA (WITPU 135, SVGW)

Also Published As

Publication number Publication date
EP0851066A2 (en) 1998-07-01
DE19724321A1 (en) 1998-04-02

Similar Documents

Publication Publication Date Title
DE69428605D1 (en) SELECTIVELY OPEN BIDIRECTIONAL SAFETY VALVE
WO2006044841A3 (en) Fluid processing device including size-changing barrier
AU6941296A (en) Valve assembly
IL152487A0 (en) Backflow preventer apparatus and method with integration of shut-off valves
GB9706044D0 (en) Dynamic enhancement of fluid flow rate using pressure and strain pulsing
GB9909025D0 (en) Variable presure hydraulic systems
EP0959269A3 (en) Flow valve
ATE160500T1 (en) HYDRAULIC SYSTEM FOR THE HYDRAULIC ACTUATION OF AN AMBULANCE LIFTING TABLE
DE69318984D1 (en) HYDRAULIC SYSTEM
ES2165909T3 (en) HYDRAULIC COUPLING WITH ADJUSTABLE PRESSURE DISCHARGE VALVE.
CA2137172A1 (en) Backflow Prevention and Detection System
CA2364328A1 (en) Pressure and flow rate control apparatus and plant system using the same
FR2407302A1 (en) PROTECTION OF DRINKING WATER PIPES AGAINST ANY WASTE WATER BACKFLOW
BR9803729A (en) Lockable piston-cylinder group.
MXPA02002433A (en) Device for reducing pressure pulsations in hydraulic manifolds.
EP0851066A3 (en) Hydraulic three-chamber backflow preventer
US2646064A (en) Valve apparatus
CA2066398A1 (en) Tank bottom diaphragm valve
DK0590960T3 (en) faucet combination
AU1418395A (en) Control system
EP1035262A3 (en) Sewage lifting device
DE4409104B4 (en) Hydraulic three-chamber system separator
KR850003746A (en) Flexible Barrage
CN209984763U (en) Visual protector of many functional safety type
SU618561A1 (en) System for controlling powered roof support

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;RO;SI

AKX Designation fees paid
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19991231

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566