JPS6189568U - - Google Patents
Info
- Publication number
- JPS6189568U JPS6189568U JP17524784U JP17524784U JPS6189568U JP S6189568 U JPS6189568 U JP S6189568U JP 17524784 U JP17524784 U JP 17524784U JP 17524784 U JP17524784 U JP 17524784U JP S6189568 U JPS6189568 U JP S6189568U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- diaphragm
- pressure
- intake
- intake valve
- 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
Landscapes
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Description
第１図は本考案によるバキユームブレーカの一
実施例の縦断面図、第２図は上記実施例の吸気弁
１８の閉弁状態を示す縦断面図、第３図はバキユ
ームブレーカの取付け位置を示す概略図、第４図
及び第５図は夫々従来例の構造及び作動状態を示
す縦断面図である。
１１……弁箱、１１ａ……入口、１１ｂ……出
口、１２……逆止め弁、１４……逆止め弁バネ、
１５……Ｏリング、１６……弁蓋、１６ｂ……吸
気口、１８……吸気弁、２０……吸気弁バネ、２
２……キヤツプ、２３……ダイヤフラム、２４…
…ダイヤフラム固定リング、２５……ダイヤフラ
ム受け、２６……ダイヤフラム押え、２７……底
蓋。
Fig. 1 is a longitudinal sectional view of an embodiment of the vacuum breaker according to the present invention, Fig. 2 is a longitudinal sectional view showing the closed state of the intake valve 18 of the above embodiment, and Fig. 3 is the mounting position of the vacuum breaker. FIGS. 4 and 5 are longitudinal sectional views showing the structure and operating state of the conventional example, respectively. 11...Valve box, 11a...Inlet, 11b...Outlet, 12...Check valve, 14...Check valve spring,
15...O ring, 16...Valve cover, 16b...Intake port, 18...Intake valve, 20...Intake valve spring, 2
2...Cap, 23...Diaphragm, 24...
...Diaphragm fixing ring, 25...Diaphragm receiver, 26...Diaphragm presser, 27...Bottom cover.
Claims (1)
弁習性が付与された吸気弁と、流入口側に設けら
れていて逆止め弁バネにより開弁習性が付与され
た逆止め弁とを具備した、逆サイホン作用による
バツクフローを防止するためのバキユームブレー
カにおいて、吸気弁の真下に流入口側と流出口側
とを区分するダイヤフラムを設け、流入圧が逆止
め弁を開弁する圧力よりも低い所定の圧力以上に
なつた時該ダイヤフラムが吸気弁を閉弁せしめる
ようにダイヤフラム面積を設定したことを特徴と
するバキユームブレーカ。 Equipped with an intake valve provided on the intake port side and given a valve opening habit by an intake valve spring, and a check valve provided on the inflow port side and given a valve opening property by a check valve spring. In a vacuum breaker for preventing backflow due to reverse siphon action, a diaphragm is provided directly below the intake valve to separate the inlet side and the outlet side, and the inlet pressure is lower than the pressure that opens the check valve. A vacuum breaker characterized in that a diaphragm area is set so that the diaphragm closes an intake valve when the pressure exceeds a predetermined pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984175247U JPH0328215Y2 (en) | 1984-11-19 | 1984-11-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984175247U JPH0328215Y2 (en) | 1984-11-19 | 1984-11-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6189568U true JPS6189568U (en) | 1986-06-11 |
| JPH0328215Y2 JPH0328215Y2 (en) | 1991-06-18 |
Family
ID=30732852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984175247U Expired JPH0328215Y2 (en) | 1984-11-19 | 1984-11-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0328215Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4241752A (en) * | 1978-05-30 | 1980-12-30 | Watts Regulator Company | Backflow preventer |
-
1984
- 1984-11-19 JP JP1984175247U patent/JPH0328215Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4241752A (en) * | 1978-05-30 | 1980-12-30 | Watts Regulator Company | Backflow preventer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0328215Y2 (en) | 1991-06-18 |
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