IT211836Z2 - Valvola di ritegno a doppia chiusura con scarichi. - Google Patents
Valvola di ritegno a doppia chiusura con scarichi.Info
- Publication number
- IT211836Z2 IT211836Z2 IT2241987U IT2241987U IT211836Z2 IT 211836 Z2 IT211836 Z2 IT 211836Z2 IT 2241987 U IT2241987 U IT 2241987U IT 2241987 U IT2241987 U IT 2241987U IT 211836 Z2 IT211836 Z2 IT 211836Z2
- Authority
- IT
- Italy
- Prior art keywords
- exhausts
- check valve
- closing check
- double closing
- double
- Prior art date
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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
- F16K15/066—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring with a plurality of valve members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2241987U IT211836Z2 (it) | 1987-09-24 | 1987-09-24 | Valvola di ritegno a doppia chiusura con scarichi. |
GB8807558A GB2210140B (en) | 1987-09-24 | 1988-03-30 | A double closing non-return valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2241987U IT211836Z2 (it) | 1987-09-24 | 1987-09-24 | Valvola di ritegno a doppia chiusura con scarichi. |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8722419V0 IT8722419V0 (it) | 1987-09-24 |
IT211836Z2 true IT211836Z2 (it) | 1989-05-25 |
Family
ID=11196051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT2241987U IT211836Z2 (it) | 1987-09-24 | 1987-09-24 | Valvola di ritegno a doppia chiusura con scarichi. |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB2210140B (it) |
IT (1) | IT211836Z2 (it) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4953588A (en) * | 1989-08-16 | 1990-09-04 | Mueller Co. | Dual check valve |
JP4269260B2 (ja) * | 2003-06-05 | 2009-05-27 | 三浦工業株式会社 | バルブ |
CN104514942A (zh) * | 2014-07-12 | 2015-04-15 | 涂晶 | 在含固体杂质的流体输送管路上正常工作的止回阀装置 |
CN106224599B (zh) * | 2016-08-29 | 2018-07-10 | 约翰斯顿流体科技(无锡)有限公司 | 一种多级止回阀 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB292887A (en) * | 1928-02-29 | 1928-06-28 | Gottfried Bornefeld | Improvements in safety cut-off valves for gas conduits |
DE2309552A1 (de) * | 1973-02-26 | 1974-09-05 | Herion Werke Kg | Sicherheitsrueckschlagventil |
US4284097A (en) * | 1978-03-28 | 1981-08-18 | Amtrol Inc. | In line back flow preventer |
-
1987
- 1987-09-24 IT IT2241987U patent/IT211836Z2/it active
-
1988
- 1988-03-30 GB GB8807558A patent/GB2210140B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB8807558D0 (en) | 1988-05-05 |
IT8722419V0 (it) | 1987-09-24 |
GB2210140B (en) | 1991-09-25 |
GB2210140A (en) | 1989-06-01 |
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