GB2012922A - Control Valve with Spring Return - Google Patents
Control Valve with Spring ReturnInfo
- Publication number
- GB2012922A GB2012922A GB791935A GB7901935A GB2012922A GB 2012922 A GB2012922 A GB 2012922A GB 791935 A GB791935 A GB 791935A GB 7901935 A GB7901935 A GB 7901935A GB 2012922 A GB2012922 A GB 2012922A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- valve
- control
- control valve
- connections
- 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
Links
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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/044—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with more than one spring
-
- 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
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Safety Valves (AREA)
Abstract
The valve comprises a valve housing (4) having connections (1), (2) (3) for control supply and discharge medium, annular channels (5, 6) at the connections (2) and (3), and a control slide valve (7), having control edges (8, 9) respectively associated with the channels. The position of the slide valve is determined by the control pressure obtaining on one side and by a helical primary spring (10) on the other side. A secondary helical spring (11) is concentrically received within the primary spring and is held captive within a sleeve (12). The length of spring (10) is significantly greater than the secondary spring. The pretension of the secondary spring is adjustable within the sleeve by an abutment (13), the axial position of which can be varied by screwthreads before or after assembly of the valve. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782802675 DE2802675A1 (en) | 1978-01-21 | 1978-01-21 | CONTROL VALVE WITH SPRING RESET |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2012922A true GB2012922A (en) | 1979-08-01 |
GB2012922B GB2012922B (en) | 1982-04-21 |
Family
ID=6030093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB791935A Expired GB2012922B (en) | 1978-01-21 | 1979-01-19 | Control valve with spring return |
Country Status (6)
Country | Link |
---|---|
BR (1) | BR7900350A (en) |
DE (1) | DE2802675A1 (en) |
FR (1) | FR2417046A1 (en) |
GB (1) | GB2012922B (en) |
IT (1) | IT1114349B (en) |
PL (1) | PL212926A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4440272A (en) * | 1980-08-12 | 1984-04-03 | Zahnradfabrik Friedrichshafen Ag | Apparatus for controlling the braking effect of a hydraulic retarder |
EP0136567A2 (en) * | 1983-09-05 | 1985-04-10 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. | Seat valve for the flow control of a medium flowing through a tube |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE452471A (en) * | ||||
DE2049818A1 (en) * | 1970-10-10 | 1972-04-13 | Ver Flugtechnische Werke | Pressure relief valve |
DE2547916C2 (en) * | 1975-10-25 | 1986-06-05 | Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen | Limit switch-off for the steering motor of hydraulic motor vehicle power steering systems |
-
1978
- 1978-01-21 DE DE19782802675 patent/DE2802675A1/en not_active Withdrawn
-
1979
- 1979-01-17 IT IT47671/79A patent/IT1114349B/en active
- 1979-01-19 FR FR7901396A patent/FR2417046A1/en not_active Withdrawn
- 1979-01-19 GB GB791935A patent/GB2012922B/en not_active Expired
- 1979-01-19 BR BR7900350A patent/BR7900350A/en unknown
- 1979-01-22 PL PL21292679A patent/PL212926A1/xx unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4440272A (en) * | 1980-08-12 | 1984-04-03 | Zahnradfabrik Friedrichshafen Ag | Apparatus for controlling the braking effect of a hydraulic retarder |
EP0136567A2 (en) * | 1983-09-05 | 1985-04-10 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. | Seat valve for the flow control of a medium flowing through a tube |
EP0136567A3 (en) * | 1983-09-05 | 1987-01-21 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. | Seat valve for the flow control of a medium flowing through a tube |
Also Published As
Publication number | Publication date |
---|---|
PL212926A1 (en) | 1979-11-05 |
GB2012922B (en) | 1982-04-21 |
BR7900350A (en) | 1979-08-14 |
FR2417046A1 (en) | 1979-09-07 |
DE2802675A1 (en) | 1979-07-26 |
IT7947671A0 (en) | 1979-01-17 |
IT1114349B (en) | 1986-01-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |