GB705388A - Improvements in and relating to control valves for fluids - Google Patents
Improvements in and relating to control valves for fluidsInfo
- Publication number
- GB705388A GB705388A GB3795/51A GB379551A GB705388A GB 705388 A GB705388 A GB 705388A GB 3795/51 A GB3795/51 A GB 3795/51A GB 379551 A GB379551 A GB 379551A GB 705388 A GB705388 A GB 705388A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- pressure
- ports
- supply
- closure member
- 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
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
- F15B13/02—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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanically-Actuated Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
705,388. Fluid-pressure servomotors; fluidactuated valves. SELF-CHANGING GEAR CO., Ltd., and MILLER, A. A. Feb. 13, 1952 [Feb. 16, 1951], No. 3795/51. Class 135 A piston valve comprises a movable closure member 3 having a pair of interconnected pistons 4, 5 of different diameters reciprocable in a cylinder 2 having a stepped bore 7, 8, the space 26 enclosed by the cylinder between the step thereof and the larger piston 4 being constantly in communication with an outlet, so that any variation in the pressure at the port due to an initial movement of the member 3 causes a biasing force to be imposed on the member to urge it in the direction of the initial movement. The pistons control fluid supply and exhaust ports 9, 11 respectively, outlet ports 13 communicating with a fluid operated device, e.g. a servomotor. The cylinder is mounted in a housing 1 to which supply, exhaust and outlet lines 10, 12, 14 respectively, are connected. The valve is operable manually e.g. by levers or push-rods, or by pressure fluid in chambers 16 and 18, e.g. under the control of a governor or control device 30, as described in Specification 665,610. The annular area due to the difference in diameters of the pistons constitutes a biasing surface subject to the pressure in the space 26. Thus, when the closure member is being moved to connect the servomotor with the supply, piston 5 closes ports 11 and piston 4 opens ports 9, the increased pressure in space 26 causing the member 3 to snap to fully open position. Similarly, when moving the closure member in the opposite direction, piston 4 closes ports 9 and piston 5 opens ports 11, the biasing force thus being removed whereby a biasing spring 27 snaps the closure member to fully closed position to connect the servomotor to exhaust. The spring 27 may provide a force equal, e.g. to half the biasing force due to supply pressure on the annular area.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3795/51A GB705388A (en) | 1951-02-16 | 1951-02-16 | Improvements in and relating to control valves for fluids |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3795/51A GB705388A (en) | 1951-02-16 | 1951-02-16 | Improvements in and relating to control valves for fluids |
Publications (1)
Publication Number | Publication Date |
---|---|
GB705388A true GB705388A (en) | 1954-03-10 |
Family
ID=9765047
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3795/51A Expired GB705388A (en) | 1951-02-16 | 1951-02-16 | Improvements in and relating to control valves for fluids |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB705388A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113508255A (en) * | 2019-02-19 | 2021-10-15 | 时间技研株式会社 | Flow control valve |
-
1951
- 1951-02-16 GB GB3795/51A patent/GB705388A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113508255A (en) * | 2019-02-19 | 2021-10-15 | 时间技研株式会社 | Flow control valve |
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