JPS57149674A - Double seal valve - Google Patents
Double seal valveInfo
- Publication number
- JPS57149674A JPS57149674A JP3575081A JP3575081A JPS57149674A JP S57149674 A JPS57149674 A JP S57149674A JP 3575081 A JP3575081 A JP 3575081A JP 3575081 A JP3575081 A JP 3575081A JP S57149674 A JPS57149674 A JP S57149674A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pipe
- valve element
- hole
- incoming pipe
- 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.)
- Pending
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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/44—Details of seats or valve members of double-seat valves
- F16K1/443—Details of seats or valve members of double-seat valves the seats being in series
- F16K1/446—Details of seats or valve members of double-seat valves the seats being in series with additional cleaning or venting means between the two seats
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
PURPOSE:To prevent liquid at the incoming pipe side from mixing with that at the valve chest side by furnishing a cylindrical valve element to be fitted slidably in the cylinder-formed hollow part in the incoming pipe, which is installed intersecting with the flow on the valve chest side, and excavating a through hole which will face the drainage hole at the time of valve open and will open inside the valve chest at the time of valve open. CONSTITUTION:When the valve stem 8 retracts the external valve element 9, internal valve element 10 and pipe 12 move to the position shown by the dot-and-dash line in the illustration attached to put the inside of the valve chest 1 and the incoming pipe 2 in passing-by condition with the aid of a through hole 13 and, when the valve stem 8 proceeds, the external valve element 9 and internal valve element 10 are placed on the external 6 and internal 7 valve seats, as illustrated by solid line, and the pipe 12 is fitted in the hollow part 11 to put the incoming pipe 2 in closed condition. In case the valve elements 9, 10 are not closed perfectly, leak liquids from the valve element 9 and valve element 10 flow down individually at the inside surface of pipe 12 and through the through hole 13, respectively, to be exhausted from drainage hole 4. According to this arrangement, the liquid on the incoming pipe side 2 is never mixed with that on the valve chest side 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3575081A JPS57149674A (en) | 1981-03-12 | 1981-03-12 | Double seal valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3575081A JPS57149674A (en) | 1981-03-12 | 1981-03-12 | Double seal valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57149674A true JPS57149674A (en) | 1982-09-16 |
Family
ID=12450494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3575081A Pending JPS57149674A (en) | 1981-03-12 | 1981-03-12 | Double seal valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57149674A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009127761A (en) * | 2007-11-26 | 2009-06-11 | Iwai Kikai Kogyo Co Ltd | Leaked water draining structure for valve device |
-
1981
- 1981-03-12 JP JP3575081A patent/JPS57149674A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009127761A (en) * | 2007-11-26 | 2009-06-11 | Iwai Kikai Kogyo Co Ltd | Leaked water draining structure for valve device |
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