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GB1379455A - Hydraulic control valve - Google Patents

Hydraulic control valve

Info

Publication number
GB1379455A
GB1379455A GB880972A GB880972A GB1379455A GB 1379455 A GB1379455 A GB 1379455A GB 880972 A GB880972 A GB 880972A GB 880972 A GB880972 A GB 880972A GB 1379455 A GB1379455 A GB 1379455A
Authority
GB
United Kingdom
Prior art keywords
port
valve member
ball
main valve
feb
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
GB880972A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1379455A publication Critical patent/GB1379455A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices
    • F15B13/015—Locking-valves or other detent i.e. load-holding devices using an enclosed pilot flow valve
    • 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
    • F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
    • F16K15/182—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism
    • F16K15/1826—Check valves which can be actuated by a pilot valve
    • 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
    • F16K39/00—Devices for relieving the pressure on the sealing faces
    • F16K39/02—Devices for relieving the pressure on the sealing faces for lift valves
    • F16K39/024—Devices for relieving the pressure on the sealing faces for lift valves using an auxiliary valve on the main valve

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Check Valves (AREA)
  • Safety Valves (AREA)

Abstract

1379455 Valves ROBERT BOSCH GmbH 25 Feb 1972 [27 Feb 1971] 8809/72 Heading F2V [Also in Division G3] A valve controlling flow between port 15 and a work port 18 has a main valve member 3 housing a pilot ball 13 which, upon pressurization of port 15, engages seat 11 so that the pressure can unseat the main valve member against spring 5 to allow flow to port 18, e.g. to raise a load. Upon depressurization of port 15, the main valve member reseats and ball 13 engages seat 14 to prevent backflow via throttle 19 and passages 2, 10 to lower the load, ball 13 is unseated by tappet 17 to drain passages 2, 10 so that pressure in port 18 acting on annulus D-d unseats the main valve member, this control mode being available by making the clearance area P around ball 13 at least equal to the area of passage 19.
GB880972A 1971-02-27 1972-02-25 Hydraulic control valve Expired GB1379455A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2109378A DE2109378C3 (en) 1971-02-27 1971-02-27 Check valve with additional actuation

Publications (1)

Publication Number Publication Date
GB1379455A true GB1379455A (en) 1975-01-02

Family

ID=5800006

Family Applications (1)

Application Number Title Priority Date Filing Date
GB880972A Expired GB1379455A (en) 1971-02-27 1972-02-25 Hydraulic control valve

Country Status (5)

Country Link
JP (1) JPS558712B1 (en)
AT (1) AT316239B (en)
DE (1) DE2109378C3 (en)
FR (1) FR2127773A5 (en)
GB (1) GB1379455A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000090A (en) * 1977-06-22 1979-01-04 Danfoss As Fluid-flow valve arrangement especially for steering gear
GB2141263A (en) * 1983-06-08 1984-12-12 Dowty Hydraulic Units Ltd Servo valve
GB2141262A (en) * 1983-06-08 1984-12-12 Dowty Hydraulic Units Ltd Servo valve
US5960814A (en) * 1997-09-12 1999-10-05 Ngt, Llc. Counter balanced locking valve
GB2335967A (en) * 1998-03-28 1999-10-06 Dbt Gmbh Hydraulically trippable check valve
WO2005019707A1 (en) * 2003-08-13 2005-03-03 Trw Automotive Gmbh Combined non-return and pressure-relief valve
US8262058B2 (en) 2008-08-28 2012-09-11 Kot Norbert J Balanced pilot operated check valve
CN103343826A (en) * 2013-07-05 2013-10-09 天津百利展发集团有限公司 Novel check valve
US9611871B2 (en) 2013-09-13 2017-04-04 Norbert J. Kot Pneumatic valve assembly and method
WO2021016357A3 (en) * 2019-07-23 2021-03-04 Schlumberger Technology Corporation Gas lift valve

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1129059B (en) * 1980-01-23 1986-06-04 Fiat Ricerche PRESSURE REGULATING VALVE FOR AN OPEN HYDRAULIC CIRCUIT
US4545287A (en) * 1982-10-22 1985-10-08 The Cessna Aircraft Company Metered lockout valve
FR2615585A1 (en) * 1987-05-20 1988-11-25 Joly Edouard Member for controlling or stopping fluid with a small opening force
DE102011013176B4 (en) * 2011-03-05 2024-02-15 Robert Bosch Gmbh Mechanically unlockable check valve with pressure relief
CN105332674B (en) * 2015-10-26 2017-11-17 东北石油大学 The two-way controllable valve door that underground low speed is opened, closed at a high speed

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000090A (en) * 1977-06-22 1979-01-04 Danfoss As Fluid-flow valve arrangement especially for steering gear
GB2000090B (en) * 1977-06-22 1982-02-10 Danfoss As Improvements in and related to a fluid-flow valve arrangement especially for steering gear
GB2141263A (en) * 1983-06-08 1984-12-12 Dowty Hydraulic Units Ltd Servo valve
GB2141262A (en) * 1983-06-08 1984-12-12 Dowty Hydraulic Units Ltd Servo valve
US5960814A (en) * 1997-09-12 1999-10-05 Ngt, Llc. Counter balanced locking valve
GB2335967A (en) * 1998-03-28 1999-10-06 Dbt Gmbh Hydraulically trippable check valve
US6073654A (en) * 1998-03-28 2000-06-13 Dbt Deutsche Bergbau-Technik Gmbh Hydraulically trippable check valve for underground mine support hydraulics
GB2335967B (en) * 1998-03-28 2002-03-06 Dbt Gmbh Hydraulically trippable check valve for underground mine support hydraulics
WO2005019707A1 (en) * 2003-08-13 2005-03-03 Trw Automotive Gmbh Combined non-return and pressure-relief valve
US8262058B2 (en) 2008-08-28 2012-09-11 Kot Norbert J Balanced pilot operated check valve
CN103343826A (en) * 2013-07-05 2013-10-09 天津百利展发集团有限公司 Novel check valve
CN103343826B (en) * 2013-07-05 2016-02-03 天津百利展发集团有限公司 Non-return valve
US9611871B2 (en) 2013-09-13 2017-04-04 Norbert J. Kot Pneumatic valve assembly and method
WO2021016357A3 (en) * 2019-07-23 2021-03-04 Schlumberger Technology Corporation Gas lift valve

Also Published As

Publication number Publication date
AT316239B (en) 1974-06-25
DE2109378B2 (en) 1978-02-23
FR2127773A5 (en) 1972-10-13
JPS558712B1 (en) 1980-03-05
DE2109378A1 (en) 1972-09-14
DE2109378C3 (en) 1978-10-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years