AT25965B - Shut-off valve. - Google Patents

Shut-off valve.

Info

Publication number
AT25965B
AT25965B AT25965DA AT25965B AT 25965 B AT25965 B AT 25965B AT 25965D A AT25965D A AT 25965DA AT 25965 B AT25965 B AT 25965B
Authority
AT
Austria
Prior art keywords
valve
shut
seat
angle
disk
Prior art date
Application number
Other languages
German (de)
Inventor
Friedrich Barth
Original Assignee
Friedrich Barth
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Friedrich Barth filed Critical Friedrich Barth
Application granted granted Critical
Publication of AT25965B publication Critical patent/AT25965B/en

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  • Lift Valve (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 
Absperrventile für Dampfleitungen ohne besonderes Dichtungsmaterial, bei denen die Dichtung durch den gegen oben stumpfwinklig oder rechtwinklig zulaufenden Ventilsitz selbst bewirkt wird, der in eine entsprechende Nut im Ventilteller eingreift, sind bekannt. Während bei diesen Ventilen die abdichtenden Metallflächen nur durch den von aussen ausgeübten Druck aufeinander gepresst werden, wird beim Erfindungsgegenstand durch besondere Wahl des Querschnittswinkels   fit,)   des Ventilsitzes (b) überdies noch eine zusätzliche Abdichtung durch eine von den äusseren Kräften unabhängige Keilwirkung erzielt.

   Das Wesen der Erfindung besteht darin, dass bei solchen Ventilen der Querschnittswinkel   (  ,)   des Ventilsitzes nur so gross gemacht wird, dass beim Niederschrauben des Ventiltellers ein Klemmen des Sitzes in der entsprechenden Nut (a) des Ventiltellers stattfindet, wodurch eine doppelte Abdichtung, nämlich an beiden Seiten des Sitzes   (b),   entsteht. 



   Um dies zu erreichen, muss der Winkel kleiner als der doppelte Reibungswinkel des jeweilig verwendeten Materials sein (für Bronze z.   Il.   kleiner als zirka 220). 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 
 EMI1.1
 
Shut-off valves for steam lines without special sealing material, in which the seal is effected by the valve seat itself which tapers at an obtuse angle or at right angles towards the top and which engages in a corresponding groove in the valve disk, are known. While in these valves the sealing metal surfaces are only pressed against one another by the pressure exerted from the outside, in the subject matter of the invention an additional seal is achieved through a wedge effect independent of the external forces through a special selection of the cross-sectional angle fit,) of the valve seat (b).

   The essence of the invention is that in such valves, the cross-sectional angle (,) of the valve seat is only made so large that when the valve disk is screwed down, the seat jams in the corresponding groove (a) of the valve disk, creating a double seal, namely on both sides of the seat (b).



   In order to achieve this, the angle must be smaller than twice the angle of friction of the respective material used (for bronze z. Il. Smaller than about 220).

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

PATENT-ANSPRUCH : Abperrventil mit metallischer Abdichtung durch den doppeltkonisch gestalteten Ventilsitz und eine zugehörige Nut im Ventilteller, dadurch gekennzeichnet, dass der Querschnitts- winkel ) dieser Teile kleiner als der doppelte Reibungswinkel der betreffenden Materialien ist, so dass beim Niederschrauben eine Klemmung beider Flächen des Sitzes in der Tellernut und dadurch eine doppelte Abdichtung stattfindet. EMI1.2 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Shut-off valve with metallic seal through the double-conical valve seat and an associated groove in the valve disk, characterized in that the cross-sectional angle of these parts is smaller than twice the friction angle of the relevant materials, so that when screwing down, both surfaces of the seat are clamped in the disk groove and thereby a double seal takes place. EMI1.2 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT25965D 1905-11-29 1905-11-29 Shut-off valve. AT25965B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT25965T 1905-11-29

Publications (1)

Publication Number Publication Date
AT25965B true AT25965B (en) 1906-10-10

Family

ID=3537117

Family Applications (1)

Application Number Title Priority Date Filing Date
AT25965D AT25965B (en) 1905-11-29 1905-11-29 Shut-off valve.

Country Status (1)

Country Link
AT (1) AT25965B (en)

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