US3309013A - Arrangements including coaxial suction and delivery valves - Google Patents

Arrangements including coaxial suction and delivery valves Download PDF

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Publication number
US3309013A
US3309013A US476868A US47686865A US3309013A US 3309013 A US3309013 A US 3309013A US 476868 A US476868 A US 476868A US 47686865 A US47686865 A US 47686865A US 3309013 A US3309013 A US 3309013A
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Prior art keywords
cylinder
suction
valve
delivery
facing
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US476868A
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English (en)
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Bauer Helmut
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Burckhardt Compression AG
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Maschinenfabrik Burckhardt AG
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1046—Combination of in- and outlet valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1013—Adaptations or arrangements of distribution members the members being of the poppet valve type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/102—Adaptations or arrangements of distribution members the members being disc valves
    • F04B39/1033—Adaptations or arrangements of distribution members the members being disc valves annular disc 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
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • F16K15/066—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring with a plurality of valve members
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7838—Plural
    • Y10T137/7841—One valve carries head and seat for second valve
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7838—Plural
    • Y10T137/7842—Diverse types
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7859—Single head, plural ports in parallel
    • Y10T137/786—Concentric ports

Definitions

  • ARRANGEMENTS INCLUDING COAXIAL SUCTION AND DELIVERY VALVES Filed Aug. 5, 1965 2 Sheets-Sheet 2 INVENTOR Heim@ @uw ATTORNEYS United States Patent Ciitice seagate Patented Mar. i4, 1967 3,309,013 ARRANGEMENTS INCLUDING CGAXIAL SUCTIGN AND DELIVERY VALVES Helmut Bauer, Basei, Switzerland, assignor to Maschinenfabrik Burckhardt A.G., Basel, Switzerland, a corporation of Switzerland Filed Aug. 3, 1965, Ser. No. 476,358 Claims priority, application Switzeriand, Aug. 3, 1964, 10,121/64 7 Claims. (Cl. 23o-231)
  • the present invention has for its object arrangements including coaxial suction and delivery valves.
  • the suction and delivery valves are mounted coaxially instead of forming independently located valves.
  • Such coaxial valves have for their advantage a considerable reduction in the time required for dismantling and this is of a high interest from t
  • the present invention provides an arrangement including coaxial suction and delivery valves intended for use in high pressure compressors and pumps.
  • the valve body shows no longer any shoulder or projection liable to" lead to an increase in the stresses,
  • such a suction and delivery valve arrangement includes inside a central valve-carrying body oblique suction channels and a central delivery channel, said central body carrying the valves being connected with a stroke-limiting member or abutment so astto form a unit therewith while a connecting element provided with at least one channel for the iluid to be fed through it is fitted inside the bore forming the central delivery passage in the valve-carrying body.
  • Said passageways or channels formed in last-mentioned element are given a shape furthering the flow of the Huid, and said element connecting the said central body with the system including the suction valve and its stroke-limiting abutment forms thus a rcmovable unit therewith.
  • any cross-sectional variations liable to increase the stresses are cut out in registry with the section of the valve-carrying body subjected to variable pressure.
  • Said arrangement may be furthermore speedily tted in the compressor or pump and dismantled after removal of a cover fitted over the cylinder head or of a securing screw without any dismantling operation being required for further parts of said pump or compressor.
  • FIG. l is a longitudinal cross-sectional view of an arrangement including suction and delivery valves in accordance with a first embodiment of the novel connecting element referred to hereabove and which, in this case, is constituted by a threaded sleeve.
  • FIG. 2 is a sectional view of a modification of the threaded sleeve forming the connecting element.
  • FIG. 3 is a longitudinal sectional view of an arrangement similar to that illustrated in FIG. l, but equipped with a modified connecting element the shape of which is that of a bar.
  • FIG. 4 is a side view of a further modification of a cross-shaped connecting element.
  • FIG. 4a is a cross-sectional view of FIG. 4.
  • FIG. 5 is a longitudinal cross-sectional view of an arrangement similar to that illustrated in FIG. 1, but equipped with a still further modification of the connecting element constituted by a threaded sleeve.
  • the coaxial suction and delivery arrangement includes a valve casing 9 provided with a cylindrical bore 11 inside which is fitted the central body 2 carrying the vaives.
  • the casing 9 may be constituted by the head of the pump or compressor cylinder operating under high pressure.
  • the central body 2. is provided with suction channels 30 starting in an oblique direction from its periphery towards the transverse surface of the central body facing the annular closing member 5 forming the suction valve.
  • annular chamber 7 serving for the admission of iluid sucked into the cylinder.
  • the central channel 31 in the body 2 opens in front of the closing member i6 forming the delivery valve of which the chamber is connected through the agency of radial channels i7 with an annular chamber 8 out of which the fluid is delivered.
  • the central body 2 is fluidtightly tted as well known per se with reference to the casing 9 by means of an annular packing 10.
  • the cylindrical bore 11 in the area extending between the annular chambers 7 and 8 serves for the accurate centering of the central body carrying the valves,
  • the suction valve is associated with a stop 3 forming a stroke limiting member.
  • the connecting element 1 there is fitted in the central channel or bore 31 of the valve-carrying body 2 a connecting element 1 through which the fluid is caused to ow.
  • said element 1 is constituted by a threaded sleeve the inner surface of which is smooth and polished and flares Widely at its end 12 facing the delivery end, so as to ensure the best conditions for the flow of the fluid.
  • the sleeve is furthermore provided with an outer ybead 13 engaging the channel 31 and of which the abutment surface 32 facing away from the delivery end engages a shoulder formed in the central channel of the central body 2.
  • the threaded end of the connecting element 1 facing the lannular closing member forming the suction valve 5 projects beyond the latter by the length of the stroke-limiting abutment 3 increased 'by the thickness of the ring 4 guiding the suction valve.
  • the central -body 2, the suction valve 5 and the stroke limiting member or abutment 3 ⁇ are assembled and form a unit which may be removed bodily.
  • the opening 15 at the input end of the threaded sleeve also ares outwardly to a large extent in registry with the threaded end of the sleeve with a view to providing opt-imum conditions for the ow of uid.
  • the threaded sleeve 1 consequently forms both a central connecting element and a channel connecting the bore in the cylinder with the chamber of the delivery valve, which extends in the central -body beyond the closing member 16 forming the delivery valve 'and which is subjected to the pressure inside the compressor.
  • the fluid llows out of lastmentionedk chamber towards the annular compression chamber, as provided by the channels 17 which extend in a radial plane slopingly or otherwise.
  • the cylinder head formed by the casing 9 is closed on the side facing.
  • FIG. 5 illustrates a connecting element 1 formed again by a threaded sleeve.
  • the connecting mem-ber 1 includes a central section 19 of which the two ends formvtwo beads or collars and 21 serving for the centering of said element.
  • bead 21 which faces the delivery valve is substantially larger than that of the bead 20 located in front of the suction valve.
  • said bead 21 may serve as a stop for the unitary system constituted by the connecting element and theV suction v-alve as in the case of the embodiment illustrated in FIGS. l and 5.
  • the bead 20 located on the side facing the suction valve is threaded at 14 so as to enga-ge the stroke-limiting abutment 3.
  • FIG. 4 illustrates a further modification wherein the cross-section of the connecting element 1 has a star-shaped cross-section throughout its length, so that longitudinal grooves are thus provided at Z6 which allow the passage of fluid along said element.
  • the connecting element 1 includes, as in the modifications illustrated in FlGS. l, 2 and 3 an abutment bead 13 and a terminal thread at 14.
  • a valve-carrying body fitted fluidtightly inside said cylinder and provided with an axial delivery chan-V wards the cylinder, a delivery valve adapted to close the end of the axial channel facing away from the cylinder, an annular suction Valve adapted to move axially ofthe body into and out of engagement with the openings of the suction channels facing the cylinder,-a stroke-limiting member for the suction valve onthe side of Vthe latter facing the cylinder, an element fitted inside the -axial channel of the body and provided with a longitudinal, passageway and anabutment rigid with the outer surface of said element at its end facing away from the cylinder and engaging the shoulder in the axial channel, said element mechanically engaging the stroke-limiting member to form a unit with the latter, with the body. and with the suction valve therebetween, and resilient means cooperating with said delivery valve and said suction valve.
  • valve-carrying body fitted uidtightly inside said cylinder and provided with, an axial delivery channel showing a shoulder facing away fro-m the cylinder and with an annular series of suction channels extending obliquely round the axial .channel and converging towards the cylinder, a delivery valve adapted to close the end of the axial channel facing away from the cylinder,
  • annular suction valve adapted to move axially of the.
  • a stroke-limiting member for the suction valve on the side of the latter facing the cylinder an element fitted inside the axial chan- -nel of the body and provided with a longitudinal pas-v nel showing a shoulder facing away from the cylinder ⁇ and with an annular series of suction channels extending obliquely round the axial channel and converging towards'- the cylinder, a delivery valve ⁇ adapted kto close the end of the axial channel facing away Vfrom the cylinder, an annular suction valve adapted to move axially of the body into and out of engagement with the openings of the suction channels yfacing the cylinder, a stroke-limiting member for the suction valve on the side of the latter facing the cylinder, an element fitted inside the axial channel of the body and provided with a'longitudinal pas sageway of a aerodynamic shape with outwardly an'ng openings at each end and an abutment
  • valve-carrying body fitted fluidtightly inside said cylinder and provided with an axial delivery channel showing a shoulder facing away.. fromy the cylinder and with an annular series of suction channels extending obliquely round the ⁇ axial channel and converging towards Vthe cylinder, a delivery valve adapted to close the end of the axial channel facing away from the cylinder, an annular suction valve adapted to move axially of the body into and out of engagement with ⁇ the openings ⁇ of the suction channels facing the cylinder, a stroke-limiting member for the suction valve on the side of the latter facing the cylinder, -a sleeve fitted inside the channel of the body and the bore in which has outwardly fiaring terminal openings and includes a diffuser section merging into the terminal opening facing the delivery valve, an abutment rigid with the outer surface of said sleeve at its end facing away from the cylinder and engaging the shoulder in the axial channel, said sleeve mechanically engaging the stroke-limiting member to form
  • a valve-carrying body fitted fiuidtightly inside said cylinder and provided with an axial delivery channel showing a shoulder facing away from the cylinder and with an annular series of suction channels extending obliquely round the axial channel and converging ltowards the cylinder, a delivery valve adapted to close the end of the axial channel facing away from the cylinder, an annular suction valve adapted to move axially of the body into and out of engagement with the openings of the suction channels facing the cylinder, a stroke-limiting member for the suction valve on the side of the latter facing the cylinder, an element fitted inside the axial channel of the body and including a central section of a reduced diameter leaving an empty annular space between it and the wall of the axial channel, terminal beads each provided with auxiliary channels connecting said annular space with the corresponding outer ends of the body, said beads -centering the element inside
  • valve-carrying body fitted fiuidtightly inside said cylinder and provided with an axial delivery channel showing a shoulder facing away from the cylinder and with an annular series of suction channels extending obliquely round the axial channel and converging towards the cylinder, a delivery valve ⁇ adapted to close the end of the axial c-hannel facing away from the cylinder, an annular suction valve adapted to move axially of the body into and out of engagement with the openings of the suction channels facing the cylinder, a stroke-limiting member for the suction valve on the side of the latter facing the cylinder, an element fitted inside the axial channel of the body and provided with longitudinal peripheral grooves and an abutment rigid with the outer surface of said element at its end facing away from the cylinder and engaging the shoulder in the axial channel, said element threadedly engaging the stroke-limiting member to ⁇ form a unit with the latter,
  • valve-carrying body fitted fiuidtightly inside said cylinder and provided with an axial delivery ⁇ Channel showing ⁇ a shoulder facing away from the cylinder and with an annular series of suction channels extending obliquely round the axial channel and converging towards the cylinder, a delivery valve adapted to closethe end of the axial channel facing away from the cylinder, an annular suction valve adapted to move axially of the ybody into and out of engagement with the openings of the suction channels facing the cylinder, a strokelimiting member lfor the suction valve on the side of the latter facing the cylinder, a sleeve fitted inside the channel 0f the body and including a central section of a reduced diameter, the bore in said sleeve having outwardly flaring terminal openings and including .a diffuser section merging into the terminal opening facing the delivery valve, an abutment rigid with the outer surface
US476868A 1964-08-03 1965-08-03 Arrangements including coaxial suction and delivery valves Expired - Lifetime US3309013A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1012164A CH424402A (de) 1964-08-03 1964-08-03 Konzentrisches Saug- und Druckventil

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US3309013A true US3309013A (en) 1967-03-14

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US (1) US3309013A (de)
CH (1) CH424402A (de)
DE (1) DE1450606B1 (de)
FR (1) FR1441372A (de)
GB (1) GB1119665A (de)
NL (1) NL6510061A (de)

Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508849A (en) * 1968-01-30 1970-04-28 Du Pont Compressor valve
US3702624A (en) * 1968-09-17 1972-11-14 Pumpenfabrik Urach Piston pump
US3777779A (en) * 1971-07-28 1973-12-11 B Schwaller Compressor valve assembly
FR2407370A1 (fr) * 1977-10-31 1979-05-25 Flow Ind Inc Ensemble a clapets de retenue pour pompe a tres forte pression
US4239463A (en) * 1978-09-28 1980-12-16 Worthington Pump, Inc. Reciprocating plunger pump with improved liquid end valve assembly
DE3003869A1 (de) * 1980-02-02 1981-08-06 Pumpenfabrik Urach, 7432 Urach Saug- und druckventilanordnung
DE3004145A1 (de) * 1980-02-05 1981-08-06 Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 8000 München Saugventil
US4313570A (en) * 1979-11-20 1982-02-02 Flow Industries, Inc. High pressure cutting nozzle with on-off capability
US4371001A (en) * 1977-10-31 1983-02-01 Flow Industries, Inc. Check valve assembly
US4450860A (en) * 1981-02-13 1984-05-29 Copeland Corporation Discharge valve guide
US4456440A (en) * 1981-03-25 1984-06-26 Uhde Gmbh Valve assembly for high-pressure pumps
WO1987006310A1 (en) * 1986-04-17 1987-10-22 Saurwein Albert C Fluid pressure intensifier
US4818194A (en) * 1987-06-11 1989-04-04 Saurwein Albert C Check valve assembly for fluid pressure intensifying apparatus
US5037276A (en) * 1989-04-04 1991-08-06 Flow International Corporation High pressure pump valve assembly
US5046454A (en) * 1988-12-20 1991-09-10 Funki A/S Tray system for incubation and hatching operations, method during use of the tray system and use of the tray system
US5253987A (en) * 1992-04-03 1993-10-19 Harrison Curtis W Fluid end for high-pressure fluid pumps
US5302087A (en) * 1993-04-29 1994-04-12 Butterworth Jetting Systems, Inc. High pressure pump with loaded compression rods and method
US5609477A (en) * 1993-03-12 1997-03-11 Forgesharp Limited Inlet/outlet valve arrangement for a fluid pressure intensifying apparatus
US5636975A (en) * 1994-04-04 1997-06-10 Reynolds Metals Company Inlet and discharge valve arrangement for a high pressure pump
US5904179A (en) * 1997-11-14 1999-05-18 Waterjet Service, Inc. Inlet check valve
US6021810A (en) * 1997-11-14 2000-02-08 Waterjet Service, Inc. Inlet check valve
US20040206396A1 (en) * 2002-07-24 2004-10-21 Peter Behrends Valve, use of said valve, system comprising said valve and method for determining the condition of said system
US20050074350A1 (en) * 2003-10-01 2005-04-07 Flow International Corporation Device and method for maintaining a static seal of a high pressure pump
US20050276712A1 (en) * 2004-06-15 2005-12-15 Waterjet Service, Inc. Inlet check valve with removable seat
US20100119394A1 (en) * 2006-07-11 2010-05-13 Bernhard Frey Cylinder piston arrangement for a fluid pump or a fluid motor
US20100140526A1 (en) * 2008-12-04 2010-06-10 Forrest Jamie A High pressure water pump valve and seal structure
US20100269927A1 (en) * 2009-04-23 2010-10-28 Uwe Fuxa Automatic concentric crank-side compressor valve
CN103104439A (zh) * 2011-11-11 2013-05-15 中国科学院沈阳科学仪器研制中心有限公司 一种用于多级干式真空泵的气路分配系统
US9670922B2 (en) * 2014-01-24 2017-06-06 Gardner Denver Water Jetting Systems, Inc. Pump system including valve cartridge assembly with a suction valve in line with a discharge valve
US11162479B2 (en) 2019-11-18 2021-11-02 Kerr Machine Co. Fluid end
US20220243724A1 (en) * 2021-02-04 2022-08-04 Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. Fluid splitter, fluid end and plunger pump
US11578711B2 (en) 2019-11-18 2023-02-14 Kerr Machine Co. Fluid routing plug
US11578710B2 (en) 2019-05-02 2023-02-14 Kerr Machine Co. Fracturing pump with in-line fluid end
US11635068B2 (en) 2019-11-18 2023-04-25 Kerr Machine Co. Modular power end
US11644018B2 (en) 2019-11-18 2023-05-09 Kerr Machine Co. Fluid end
WO2023097330A1 (en) * 2021-11-29 2023-06-01 Forum Us, Inc. Fluid end for positive displacement pump systems
US11686296B2 (en) 2019-11-18 2023-06-27 Kerr Machine Co. Fluid routing plug
US11808254B2 (en) 2019-11-18 2023-11-07 Kerr Machine Co. Fluid end assembly
US11808364B2 (en) 2021-11-11 2023-11-07 Kerr Machine Co. Valve body
US20240003446A1 (en) * 2022-07-01 2024-01-04 Siemens Energy, Inc. Anti-spin outer diameter guided compressor valve
US11920583B2 (en) 2021-03-05 2024-03-05 Kerr Machine Co. Fluid end with clamped retention
US11946465B2 (en) 2021-08-14 2024-04-02 Kerr Machine Co. Packing seal assembly

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US1719572A (en) * 1928-01-23 1929-07-02 Stoll Albert Valve construction for compressors and refrigerating pumps

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US1614851A (en) * 1924-10-16 1927-01-18 H J West And Company Ltd High-pressure gas compressor
US1719572A (en) * 1928-01-23 1929-07-02 Stoll Albert Valve construction for compressors and refrigerating pumps

Cited By (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508849A (en) * 1968-01-30 1970-04-28 Du Pont Compressor valve
US3702624A (en) * 1968-09-17 1972-11-14 Pumpenfabrik Urach Piston pump
US3777779A (en) * 1971-07-28 1973-12-11 B Schwaller Compressor valve assembly
US4371001A (en) * 1977-10-31 1983-02-01 Flow Industries, Inc. Check valve assembly
FR2407370A1 (fr) * 1977-10-31 1979-05-25 Flow Ind Inc Ensemble a clapets de retenue pour pompe a tres forte pression
US4239463A (en) * 1978-09-28 1980-12-16 Worthington Pump, Inc. Reciprocating plunger pump with improved liquid end valve assembly
US4313570A (en) * 1979-11-20 1982-02-02 Flow Industries, Inc. High pressure cutting nozzle with on-off capability
DE3003869A1 (de) * 1980-02-02 1981-08-06 Pumpenfabrik Urach, 7432 Urach Saug- und druckventilanordnung
DE3004145A1 (de) * 1980-02-05 1981-08-06 Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 8000 München Saugventil
US4450860A (en) * 1981-02-13 1984-05-29 Copeland Corporation Discharge valve guide
US4456440A (en) * 1981-03-25 1984-06-26 Uhde Gmbh Valve assembly for high-pressure pumps
WO1987006310A1 (en) * 1986-04-17 1987-10-22 Saurwein Albert C Fluid pressure intensifier
US4818194A (en) * 1987-06-11 1989-04-04 Saurwein Albert C Check valve assembly for fluid pressure intensifying apparatus
US5046454A (en) * 1988-12-20 1991-09-10 Funki A/S Tray system for incubation and hatching operations, method during use of the tray system and use of the tray system
US5037276A (en) * 1989-04-04 1991-08-06 Flow International Corporation High pressure pump valve assembly
US5253987A (en) * 1992-04-03 1993-10-19 Harrison Curtis W Fluid end for high-pressure fluid pumps
US5609477A (en) * 1993-03-12 1997-03-11 Forgesharp Limited Inlet/outlet valve arrangement for a fluid pressure intensifying apparatus
US5302087A (en) * 1993-04-29 1994-04-12 Butterworth Jetting Systems, Inc. High pressure pump with loaded compression rods and method
WO1994025756A1 (en) * 1993-04-29 1994-11-10 Butterworth Jetting Systems, Inc. High pressure pump with loaded compression rods and method
US5636975A (en) * 1994-04-04 1997-06-10 Reynolds Metals Company Inlet and discharge valve arrangement for a high pressure pump
US5904179A (en) * 1997-11-14 1999-05-18 Waterjet Service, Inc. Inlet check valve
US6021810A (en) * 1997-11-14 2000-02-08 Waterjet Service, Inc. Inlet check valve
US20040206396A1 (en) * 2002-07-24 2004-10-21 Peter Behrends Valve, use of said valve, system comprising said valve and method for determining the condition of said system
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Also Published As

Publication number Publication date
CH424402A (de) 1966-11-15
DE1450606B1 (de) 1970-03-19
GB1119665A (en) 1968-07-10
NL6510061A (de) 1966-02-04
FR1441372A (fr) 1966-06-03

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