EP0000012A1 - Vanne de dérivation pour pompes et installations de chauffage - Google Patents

Vanne de dérivation pour pompes et installations de chauffage Download PDF

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Publication number
EP0000012A1
EP0000012A1 EP78100020A EP78100020A EP0000012A1 EP 0000012 A1 EP0000012 A1 EP 0000012A1 EP 78100020 A EP78100020 A EP 78100020A EP 78100020 A EP78100020 A EP 78100020A EP 0000012 A1 EP0000012 A1 EP 0000012A1
Authority
EP
European Patent Office
Prior art keywords
valve
bypass
plate
bypass valve
drive plate
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
EP78100020A
Other languages
German (de)
English (en)
Other versions
EP0000012B1 (fr
Inventor
Ewald Nolte
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.)
Gebr Tuxhorn
TUSHORN GEB
Original Assignee
Gebr Tuxhorn
TUSHORN GEB
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
Priority claimed from DE19787802444 external-priority patent/DE7802444U1/de
Application filed by Gebr Tuxhorn, TUSHORN GEB filed Critical Gebr Tuxhorn
Publication of EP0000012A1 publication Critical patent/EP0000012A1/fr
Application granted granted Critical
Publication of EP0000012B1 publication Critical patent/EP0000012B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • F16K15/065—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring spring pulling the closure member against the seat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2579—Flow rate responsive
    • Y10T137/2582—Including controlling main line flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2579—Flow rate responsive
    • Y10T137/2582—Including controlling main line flow
    • Y10T137/2584—Relief or bypass closes as main opens
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2579—Flow rate responsive
    • Y10T137/2587—Bypass or relief valve biased open
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2579—Flow rate responsive
    • Y10T137/2592—Carried choke

Definitions

  • the invention relates to a bypass valve for pumps and heating systems with a control element which has two valve plates which are different in size and connected via a rod.
  • the invention is based on the object of designing a valve of the type mentioned at the outset which, irrespective of the pressure and with a decrease in the quantity consumed, continuously supplies part or all of the delivery volume to the suction line of the pump.
  • valve plate and the rod connecting it are mounted so that they can move in the flow direction of the valve and the valve plate can only be steplessly controlled via the flow.
  • valves according to the invention can be used without any special adjustment.
  • the quantities of liquid delivered can be regulated continuously down to zero.
  • the larger plate of the control element is designed as a drive plate.
  • An annular flow cross-section is always present between the outer edge of the drive plate and the housing wall. Since there is no valve seat for the drive plate, the construction is simple in terms of production technology.
  • the drive plate assumes its position under the influence of the liquid flowing through and controls the bypass valve plate via the connecting rod, it is expedient, on the one hand, to direct the flow onto the drive plate by a corresponding choice of the inner contours of the housing and, on the other hand, to provide a sufficient flow cross section for the flow around the drive plate .
  • the interior of the housing is provided with a conical taper in the flow direction behind the inlet opening to the bypass, which tapers into the region of the end position of the drive plate when the bypass is open. Then the interior of the housing extends into the area of the end position of the drive plate when the bypass is closed.
  • the bypass valve according to FIG. 1 is used in self-priming pumps.
  • the valve housing 1 has three connections, which are identified by directional arrows, namely the inlet, the outlet and the bypass. Furthermore, the valve housing is equipped with two opposing seats, namely a larger GS for the outlet and a smaller KS for the bypass.
  • the valve seats are associated with valve plates 6 and 7, which, together with a connecting rod 2, form the control element of the valve, which is movably mounted in the flow direction of the valve.
  • the storage of the rod 2 is not shown in the figures.
  • valve plate 7 is rigidly connected to the rod 2, while the valve plate 6 is arranged displaceably on the rod 2.
  • a spring 4 which is supported on the valve plate 6 and on an end plate of the rod 2, both valve plates are held against one another in tension.
  • a hood 5 prevents liquid from flowing between the bore in the valve plate 6 and the rod 2.
  • both valve plates When the pump is at a standstill, both valve plates are pressed against the respective valve seats by the spring 4. In this position, the valve plate 6 as a return valve and the valve plate 7 acts ver - prevents that the pump sucks in air at the re-start via the bypass.
  • the valve shown in FIG. 2 can be installed in the heating system behind the pump in closed heating systems.
  • the bypass opens into the return.
  • valve plate 6 When the heating regulating valves are open, the valve plate 6 is moved in the flow direction by the flow. The valve plate 7 is pulled through the rod 2 and closes the bypass. If the flow rate is reduced by closing the heating regulating valves, the forces acting on the valve plate 6 also decrease, while at the same time the forces acting on the Increase valve plate 7 acting forces. When the forces are balanced, the bypass begins to open. The opening takes place to the extent that the flow is throttled.
  • the larger plate 16 of the control element is designed as a drive plate.
  • No valve seat is assigned to this drive plate in the valve housing.
  • the interior of the housing tapers conically in the flow direction behind the inlet opening to the bypass up to the region of the end position of the drive plate when the bypass is open. This position of the drive plate is shown in FIG. 4.
  • the inside diameter of the housing is marked D at the point of greatest taper. From this point, the housing widens conically in the direction of flow, up to the end position of the drive plate 16 when the bypass is closed. This position of the drive plate is shown in FIG. 3.
  • This spatial shape of the housing ensures that when the bypass is open, the annular flow cross-section between the outer edge of the drive plate and the housing wall is small and, through the housing taper, the liquid flowing through the housing onto the unit slave disk 16 is aligned.
  • the annular flow cross section between the drive plate and the housing increases. In this area, there is less resistance to the flow around the drive plate.
  • valve plate 7 is assigned a closing spring which engages on the underside of the valve plate and is supported at the other end on a surface of the bypass line.
  • the valve plate 7 is pressed against the valve seat in the rest position shown in FIG. 3 and held in this position.
  • valve housing 1 is traversed by the medium in a straight direction.
  • the spring 14 is dimensioned so that it closes the bypass in the rest position (Fig. 3), but has no influence on the control.
  • the outlet line is open, the force of the medium flowing through acts on the drive plate 16. The force is transmitted to the valve plate 7 and keeps the bypass closed.
  • bypass valve additionally takes on the function of a check valve.
  • Such a valve can be used in pump systems with a greater pressure head and in pump systems in which the pump is temporarily shut down.
  • a check cone 15 is slidably mounted on the drive plate 16a and a valve seat GS is provided for this check cone in the housing 1.
  • This valve seat GS forms the end of the conical taper of the housing interior in the flow direction.
  • the spring 15 is dimensioned such that the valve plate 7 is not lifted from the vacuum occurring on the suction side when the pump starts.
  • valve is shown in the position in which the outlet is open.
  • the non-return cone 15 is in the position lifted off from the drive plate 16a.
  • the bypass is closed by the valve plate 7.
  • the flow through the valve housing 1 takes place in a straight direction.
  • FIG. 6 shows the valve when the pump is at a standstill. The check valve and the bypass are closed. There is no liquid flow.
  • Fig. 7 the outlet of the valve is closed.
  • the check valve is in the closed position.
  • the bypass is open and the liquid flows from the inlet nozzle to the bypass.
  • bypass valve The performance of a bypass valve according to the invention is shown in size 2 "in the diagram according to FIG. 8, specifically when used in two different systems with pumps of different strengths.
  • the quantity to be drawn is equal to the flow rate (see point Al or A2). If the purchase quantity is reduced, the curve of the purchase quantity runs parallel to the pump characteristic up to the point Bl or B2. From point B1 or B2, the quantity can be reduced continuously to the value zero (see point Cl or C2), while the bypass flow increases at the same time to point D1 or D2 to point E1 or E2. Any point between points B and C can be controlled and held for an unlimited time.
  • the position of points B and E on the pump characteristic curve are determined by the size ratio of the drive plate 16 to the valve plate 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Multiple-Way Valves (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
EP78100020A 1977-06-03 1978-06-01 Vanne de dérivation pour pompes et installations de chauffage Expired EP0000012B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2725044 1977-06-03
DE2725044 1977-06-03
DE7802444U 1978-01-27
DE19787802444 DE7802444U1 (de) 1978-01-27 1978-01-27 Bypassventil fuer pumpen und heizungsanlagen

Publications (2)

Publication Number Publication Date
EP0000012A1 true EP0000012A1 (fr) 1978-12-20
EP0000012B1 EP0000012B1 (fr) 1980-01-09

Family

ID=25772091

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100020A Expired EP0000012B1 (fr) 1977-06-03 1978-06-01 Vanne de dérivation pour pompes et installations de chauffage

Country Status (7)

Country Link
US (1) US4243064A (fr)
EP (1) EP0000012B1 (fr)
CA (1) CA1087491A (fr)
DD (1) DD136525A5 (fr)
DK (1) DK155457C (fr)
FI (1) FI781713A (fr)
NO (1) NO781925L (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4243064A (en) * 1977-06-03 1981-01-06 Tuxhorn Kg Bypass valve for pumps, heating systems and the like
GB2154707A (en) * 1984-02-22 1985-09-11 Ross Operating Valve Co Inlet poppet valve
FR2589972A1 (fr) * 1985-11-08 1987-05-15 Mariotti Rene Valve de controle de flux, notamment pour l'alimentation en huile d'une cuve de friture
US4872474A (en) * 1988-10-14 1989-10-10 Ore-Ida Vended Products, Inc. Diverter valve
USRE33712E (en) * 1981-03-13 1991-10-08 Ore-Ida Vended Products, Inc. Deep-fryer pan for industrial fryers
WO2010148005A1 (fr) 2009-06-18 2010-12-23 Tyco Fire Products Lp Soupape de commande de fluide à double objectif
GB2608863A (en) * 2021-07-15 2023-01-18 Absolute Water Tech Solutions Ltd Water supply diversion device

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385640A (en) * 1980-08-25 1983-05-31 Thomas D. McKane Hydraulic unloader
DE3532602C2 (de) * 1984-09-25 1994-07-28 Jidosha Kiki Co Strömungssteuerventil
US4753264A (en) * 1986-03-19 1988-06-28 Jidosha Kiki Co., Ltd. Flow control valve
DE3612063C1 (de) * 1986-04-10 1991-09-26 Westfalia Separator Ag Vorrichtung zur Regulierung des Konzentratablaufes einer Zentrifuge
US4779639A (en) * 1986-11-03 1988-10-25 Keystone International Holdings Corp. Automatic recirculation valve
US4924901A (en) * 1988-10-19 1990-05-15 Fluid Jet International Inc. In line valve
US4941502A (en) * 1989-05-31 1990-07-17 Keystone International Holdings Corp. Low pressure recirculation valve
US5172716A (en) * 1991-07-01 1992-12-22 Keystone International Holdings Corp. Recirculation valve
US5236002A (en) * 1992-10-19 1993-08-17 Grinnell Corporation Domestic water supply shutoff valve
DE19543085A1 (de) * 1995-11-18 1997-05-22 Luk Automobiltech Gmbh & Co Kg Pumpe
US6357467B1 (en) 2000-03-27 2002-03-19 Grinnell Corporation Automatic water supply shutoff valve
US6564877B1 (en) 2000-12-01 2003-05-20 Class 1, Inc. Automatic valve with manual override for fire engine high pressure water system
US8215330B2 (en) * 2007-03-30 2012-07-10 Tyco Valves & Controls, LP Adjustable recirculating valve
KR102018404B1 (ko) 2011-12-09 2019-09-04 프레스-바크 엔지니어링 에이피에스 감압 밸브
JP6295499B2 (ja) 2012-07-18 2018-03-20 プレス−ヴァク エンジニアリング アーペーエス 圧力解放バルブ
CN102900866B (zh) * 2012-11-14 2014-01-29 王文龙 一种气向阀及其工作方法
KR102382093B1 (ko) * 2016-12-13 2022-04-04 현대자동차주식회사 원가절감 및 성능향상을 위한 진공호스 내장형 체크밸브
US11446681B2 (en) * 2018-06-25 2022-09-20 Robert Dale Beggs Liquid recirculating valve
US11000863B2 (en) * 2019-03-26 2021-05-11 Pentair Flow Technologies, Llc Push valve assembly and method
CN110440024A (zh) * 2019-08-13 2019-11-12 澎阳泵业泰州有限公司 一种可变向防回流装置

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL108152C (fr) * 1900-01-01
CH85744A (de) * 1919-12-12 1920-07-01 Buergin Frey & Cie Umschaltvorrichtung für eine aus einem Hauptmesser und einem Nebenmesser bestehende Wassermessergruppe.
CH204955A (de) * 1938-02-02 1939-05-31 Sulzer Ag Auf der Druckseite von Kreiselpumpen, insbesondere Kesselspeisepumpen, angeordnetes Rückschlagorgan.
US2619979A (en) * 1946-10-14 1952-12-02 Tecalemit Ltd Unloader for hydraulic pumps
FR1130209A (fr) * 1954-08-28 1957-02-01 Stork Koninklijke Maschf Soupape de retenue pour, ou applicable à une pompe à liquide
DE1194663B (de) * 1961-10-30 1965-06-10 Concordia Maschinen U Elek Zit Mehrwegeventil
DE1906305A1 (de) * 1969-02-08 1970-09-03 Johansson Tord Gustav Ivan Ruecklauf- und UEberlaufventil
US3559670A (en) * 1969-01-14 1971-02-02 Gamon Calmet Ind Inc Fluid flow rate actuated change over valve
DE2504292A1 (de) * 1975-02-01 1976-08-05 Ewald Bous Automatischer pumpendruck-bypass- regler

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US2556829A (en) * 1945-03-20 1951-06-12 Bendix Aviat Corp Fluid regulator
US2687742A (en) * 1952-10-11 1954-08-31 Standard Oil Dev Co Valve apparatus for steam control valves
DE1108992B (de) * 1958-06-06 1961-06-15 Gerdts Gustav F Kg Verfahren zur Sicherstellung des Durchflusses einer Mindestmenge
US3152603A (en) * 1961-12-22 1964-10-13 Bendix Corp Constant head control valve
DE1453783A1 (de) * 1962-01-13 1969-04-17 Klein Schanzlin & Becker Ag Freilaufrueckschlagventil
DE1453786B2 (de) * 1962-04-11 1971-08-19 H Schroeder & Co, 8161 Elbach Freilaufrueckschlagventil
DE1528782A1 (de) * 1964-08-29 1969-07-10 Wilhelm Odendahl Mindestmengensteuerung fuer Kesselspeise-Kreiselpumpen
SE348944B (fr) * 1969-09-09 1972-09-18 Aga Ab
CH566505A5 (fr) * 1974-04-09 1975-09-15 Von Roll Ag
US4243064A (en) * 1977-06-03 1981-01-06 Tuxhorn Kg Bypass valve for pumps, heating systems and the like

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL108152C (fr) * 1900-01-01
CH85744A (de) * 1919-12-12 1920-07-01 Buergin Frey & Cie Umschaltvorrichtung für eine aus einem Hauptmesser und einem Nebenmesser bestehende Wassermessergruppe.
CH204955A (de) * 1938-02-02 1939-05-31 Sulzer Ag Auf der Druckseite von Kreiselpumpen, insbesondere Kesselspeisepumpen, angeordnetes Rückschlagorgan.
US2619979A (en) * 1946-10-14 1952-12-02 Tecalemit Ltd Unloader for hydraulic pumps
FR1130209A (fr) * 1954-08-28 1957-02-01 Stork Koninklijke Maschf Soupape de retenue pour, ou applicable à une pompe à liquide
DE1194663B (de) * 1961-10-30 1965-06-10 Concordia Maschinen U Elek Zit Mehrwegeventil
US3559670A (en) * 1969-01-14 1971-02-02 Gamon Calmet Ind Inc Fluid flow rate actuated change over valve
DE1906305A1 (de) * 1969-02-08 1970-09-03 Johansson Tord Gustav Ivan Ruecklauf- und UEberlaufventil
DE2504292A1 (de) * 1975-02-01 1976-08-05 Ewald Bous Automatischer pumpendruck-bypass- regler

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4243064A (en) * 1977-06-03 1981-01-06 Tuxhorn Kg Bypass valve for pumps, heating systems and the like
USRE33712E (en) * 1981-03-13 1991-10-08 Ore-Ida Vended Products, Inc. Deep-fryer pan for industrial fryers
GB2154707A (en) * 1984-02-22 1985-09-11 Ross Operating Valve Co Inlet poppet valve
FR2589972A1 (fr) * 1985-11-08 1987-05-15 Mariotti Rene Valve de controle de flux, notamment pour l'alimentation en huile d'une cuve de friture
EP0223696A1 (fr) * 1985-11-08 1987-05-27 René Mariotti Valve de contrôle de flux, notamment pour l'alimentation en huile d'une cuve de friture
US4870985A (en) * 1985-11-08 1989-10-03 Ore-Ida Vended Products, Inc. Flow control valve
US4872474A (en) * 1988-10-14 1989-10-10 Ore-Ida Vended Products, Inc. Diverter valve
WO2010148005A1 (fr) 2009-06-18 2010-12-23 Tyco Fire Products Lp Soupape de commande de fluide à double objectif
EP2443369A1 (fr) * 2009-06-18 2012-04-25 Tyco Fire Products LP Soupape de commande de fluide à double objectif
EP2443369A4 (fr) * 2009-06-18 2015-02-18 Tyco Fire Products Lp Soupape de commande de fluide à double objectif
GB2608863A (en) * 2021-07-15 2023-01-18 Absolute Water Tech Solutions Ltd Water supply diversion device

Also Published As

Publication number Publication date
CA1087491A (fr) 1980-10-14
DK155457B (da) 1989-04-10
DD136525A5 (de) 1979-07-11
EP0000012B1 (fr) 1980-01-09
FI781713A (fi) 1978-12-04
US4243064A (en) 1981-01-06
DK155457C (da) 1989-10-23
NO781925L (no) 1978-12-05
DK246578A (da) 1978-12-04

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