GB783233A - Improvements relating to combined pressure and vacuum relief valves - Google Patents
Improvements relating to combined pressure and vacuum relief valvesInfo
- Publication number
- GB783233A GB783233A GB33736/55A GB3373655A GB783233A GB 783233 A GB783233 A GB 783233A GB 33736/55 A GB33736/55 A GB 33736/55A GB 3373655 A GB3373655 A GB 3373655A GB 783233 A GB783233 A GB 783233A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- bellows
- pressure
- sleeve
- loaded
- 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
- 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
- F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
783,233. Relief valves. GENERAL ELECTRIC CO. Nov. 24, 1955 [Nov. 29, 1954], No. 33736/55. Class 135. A combined pressure and vacuum relief valve comprises two spring-loaded valve members 34, 44 opening in opposite directions to relief vacuum and pressure respectively, and bellows 15 for actuating the valve members which is responsive to the pressure difference between the system to be relieved and atmospheric or other outside reference pressure. The valve body 10 has an inlet port 11 for connection to the system and an aligned drainage port 12 closed by a plug 13 or a test cock, and is formed with a bore 14 closed at one end by a metallic bellows 15 and fitted at the other with a threaded sleeve 25 providing a seat 31 for the outer or vacuum relief valve disc 34. The valve disc 34 is loaded by a spring 37 and is formed with a central aperture 35 round which is formed a seat for the inner or pressure relief valve disc 44. The latter is connected to the head 17 of the bellows by a rod 46 formed with ribs 47 and guided by a correspondingly shaped aperture in the inner end 27 of the sleeve 25. The sleeve end 27 also has a number of fluid apertures 29. The body 10 and the sleeve 25 may be formed integrally. The bellows 15 is loaded by a spring 21 enclosed within and adjustable by a threaded cover 20 having a vent aperture 43. The spring 37 is similarly enclosed by an adjustable cover 40 having a fluid aperture fitted with a filter 42.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US783233XA | 1954-11-29 | 1954-11-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB783233A true GB783233A (en) | 1957-09-18 |
Family
ID=22143292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB33736/55A Expired GB783233A (en) | 1954-11-29 | 1955-11-24 | Improvements relating to combined pressure and vacuum relief valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB783233A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0494343A2 (en) * | 1991-01-05 | 1992-07-15 | Firma Carl Freudenberg | Regulation valve for venting and aerating |
| US5570713A (en) * | 1994-11-07 | 1996-11-05 | Baracuda International Corporation | Flow control weir valve |
-
1955
- 1955-11-24 GB GB33736/55A patent/GB783233A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0494343A2 (en) * | 1991-01-05 | 1992-07-15 | Firma Carl Freudenberg | Regulation valve for venting and aerating |
| EP0494343A3 (en) * | 1991-01-05 | 1992-08-26 | Firma Carl Freudenberg | Regulation valve for venting and aerating |
| US5570713A (en) * | 1994-11-07 | 1996-11-05 | Baracuda International Corporation | Flow control weir valve |
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