ATE93599T1 - SEAT VALVE. - Google Patents

SEAT VALVE.

Info

Publication number
ATE93599T1
ATE93599T1 AT90123224T AT90123224T ATE93599T1 AT E93599 T1 ATE93599 T1 AT E93599T1 AT 90123224 T AT90123224 T AT 90123224T AT 90123224 T AT90123224 T AT 90123224T AT E93599 T1 ATE93599 T1 AT E93599T1
Authority
AT
Austria
Prior art keywords
valve
channel
chamber
valve member
pressure
Prior art date
Application number
AT90123224T
Other languages
German (de)
Inventor
Rudolf Brunner
Original Assignee
Heilmeier & Weinlein
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 Heilmeier & Weinlein filed Critical Heilmeier & Weinlein
Application granted granted Critical
Publication of ATE93599T1 publication Critical patent/ATE93599T1/en

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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/003—Systems with load-holding valves
    • 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
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50545—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using braking valves to maintain a back pressure

Abstract

The valve, esp. load maintenance valve, has a housing chamber (R), with a valve member (V), pressed by a spring (C) against a seat (O). A first pressure medium channel (K1) is connected to the valve seat and a second channel (K2), to the chamber. The valve member is loaded in opposite directions by the channel pressures. The chamber contains a relief device (E) for the spring closure pressure of the valve member. This is actuated by the pressure in the second channel and in the chamber. It reduces the closing pressure, by the amount, which presses the valve member surface (f) on to the valve seat.
AT90123224T 1990-01-17 1990-12-04 SEAT VALVE. ATE93599T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4001197A DE4001197C2 (en) 1990-01-17 1990-01-17 Seat valve

Publications (1)

Publication Number Publication Date
ATE93599T1 true ATE93599T1 (en) 1993-09-15

Family

ID=6398240

Family Applications (1)

Application Number Title Priority Date Filing Date
AT90123224T ATE93599T1 (en) 1990-01-17 1990-12-04 SEAT VALVE.

Country Status (4)

Country Link
EP (1) EP0437717B1 (en)
AT (1) ATE93599T1 (en)
DE (2) DE4001197C2 (en)
DK (1) DK0437717T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19925204B4 (en) * 1999-06-01 2008-04-10 Bosch Rexroth Aktiengesellschaft Unlockable load-holding valve
DE102004016393B4 (en) * 2004-04-02 2013-04-04 Bosch Rexroth Aktiengesellschaft backflow valve

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT216851B (en) * 1958-12-13 1961-08-25 Bosch Gmbh Robert Pressure relief valve, especially for hydraulic working circuits
US4346733A (en) * 1980-07-29 1982-08-31 Fluid Controls, Inc. Control valve
DE3402110A1 (en) * 1984-01-21 1985-07-25 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Hydraulically releasable non-return valve for hydraulic high-pressure systems, in particular for support systems in underground mining operations
DE3742722A1 (en) * 1987-12-17 1989-07-06 Babcock Werke Ag DIRECTLY ACTIVE SAFETY VALVE
EP0376115B1 (en) * 1988-12-24 1992-08-05 Barmag Ag Hydraulic safety valve

Also Published As

Publication number Publication date
DK0437717T3 (en) 1993-11-08
EP0437717B1 (en) 1993-08-25
EP0437717A1 (en) 1991-07-24
DE59002477D1 (en) 1993-09-30
DE4001197A1 (en) 1991-07-18
DE4001197C2 (en) 1997-11-13

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee