CA1096355A - Eccentrically rotatable valve - Google Patents
Eccentrically rotatable valveInfo
- Publication number
- CA1096355A CA1096355A CA304,060A CA304060A CA1096355A CA 1096355 A CA1096355 A CA 1096355A CA 304060 A CA304060 A CA 304060A CA 1096355 A CA1096355 A CA 1096355A
- Authority
- CA
- Canada
- Prior art keywords
- valve
- seating surface
- seat member
- valve body
- stem
- 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
- 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
- F16K1/24—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 with valve members that, on opening of the valve, are initially lifted from the seat and next are turned around an axis parallel to the seat
Abstract
ABSTRACT OF THE DISCLOSURE
An eccentrically rotatable valve for controlling fluid flow, wherein the axis of rotation of the stem of the valve is arranged to be central with respect to the valve body, permitting simple manufacture. This is achieved by arranging the sealing seat within the valve body to be at an angle with or offset from the central axis of the valve.
An eccentrically rotatable valve for controlling fluid flow, wherein the axis of rotation of the stem of the valve is arranged to be central with respect to the valve body, permitting simple manufacture. This is achieved by arranging the sealing seat within the valve body to be at an angle with or offset from the central axis of the valve.
Description
9~;3'~
This invention relates to an eccentrically rotatable valve for controlling fluid flow, and particularly relates to improvements in a no-flange-type eccentrically rotatable valve.
Many valves of this kind have been developed heretofore. For example, there is shown a horizontal cross section of a conventional eccentric rotary valve in Fig. 1, in which a valve disk 11 is eccentrically pivoted within a valve body 14 by means of a valve stem 12 in a valve chamber 10 of the valve body 14 so that the center line of the disk 11 coincides with that of the flow path through the valve body 14 when the disk 11 is brought into the fully closed contact position, while the pivot axis of the valve stem 12 is offset from the center line.
However, the valve discribed above is not without defects. For instance, such a construction involves the provision of a bearing hole 16 of a bonnet 15 for pivotally supporting the stem 12 eccentrically disposed to correspond with the eccentrically rotatable disk 11, and accordingly the manufacture of the valve body 14 is complicated.
Further, when the valve is mounted between pipes for actual operation, it is inserted between the flanges attached to the ends of the pipes and is fixed by bolts 17 passed through the two flanges of the pipes. In this case, however, since the bonnet 15 is arranged in an offset position in the valve body 14, as described above, one of the bolts 17 will be obstructed by the bonnet 15.
63SSi In order to overcome this prob:Lem, the valve body 14 has to be provided with a pair of lug members 18 in its end portions, through which short bolts are passed for mounting the valve to the pipes avoiding the bonnet 15. Consequently, the construc-tion of the valve is made even more complicated and its mounting operation is also rather troublesome.
The present invention seeks to provide an improved eccentrically rotatable valve free from the abovementioned defects.
The present invention further seeks to provide an improved no-flange-type eccentrically rotatable valve which has a simple construction and is readily mounted for operation between pipes.
According to the present invention there is provided an eccentrically rotatable valve having: a valve body having a valve chamber and flow path openings which lead to the valve chamber; a valve seat member having an internal seating surface arranged in one of the flow path openings; an annular retainer removably mounted in the valve body and clampingly engaging an outer portion of the valve seat member to retain said valve seat member in said valve body; a valve stem pivotally mounted on the valve body and having the pivot axis thereof passing through the center of the valve chamber; and a valve disc secured to the valve stem for rotation therewith and having an external seating which in one position forms a proper seating contact with the internal seating surface of the valve seat member; wherein said valve disc has a central axis perpendicular to the plane of the external seating surface of the valve disc which does not inter-sect the axis of rotation of the valve stem, said valve seat mem-ber has an inner portion spaced from said retainer permitting :~ - 3 -, ~, . .
1~963~S~i limited bending of said valve seat me~ber during closing of the valve; and wherein said valve seating surface is in a plane angul-arly disposed wlth respect to a fluid path therethrough; said valve body further comprises face portions around each of the flow openings adapted to mate with corresponding surfaces of pipes to which the valve is to be connected; and said retainer is provided with a circular groove around an inner end portion thereof providing said spacing permitting limited bending of said valve seat member.
The present invention will now be described in detail in terms of several embodiments thereof illustrated in the accom-panying drawings, which are given by way of illustration only and thus are not limitative of the present invention, in which:
Fig. 1 is a horizontal central section of a conventional eccentric rotary valve;
Fig. 2 is a vertical central section of an embodiment of an eccentrically rotatable valve according to the present invention;
Fig. 3 is a horizontal central section of the eccentrically rotatable valve of Fig. 2;
Figs. 4 and 5 are horizontal central sections of other embodiments of a seat ring used in an eccentrically rotatable valve according to the present invention; and Fig. 6 is a horizontal central section of another embodi-ment of the eccentrically rotatable valve according to the present invention.
In Figs. 2 and 3 is shown an embodiment of an eccentrically rotatable valve of the present invention.
A valve body 21 having a substantially spherical valve B
. .
.
1~63S5 chamber 22 provides a pair of circular flow path openings 23 and 24 in its opposite ends, which lead to the chamber 22.
A seat ring 25 which forms a part of the wall of the chamber 22 and includes a flow path hole which leads to the chamber 22, is coaxially disposed in the opening 23, held by an annular retainer 26 by engaging the threaded outer surface of the retainer 26 with the threaded inner surface of the opening 23 in the valve body. The flange portion 25a of the seat ring 25 is interposed between the annular ratainer 26 and the shoulder portion 27 of the valve body 21. The seat ring 25 may be made of any suitable metallic material or plastic material such as tetrafluoroethylene.
The retainer 26 is provided with a circular groove 28 around its inner end so as to allow for the bending tolerance of the seat ring 25.
The inner end portion 25b of the seat ring 25 projects into chamber 22 from the opening 23. A
spherical seating surface 25c is formed in the inner end portion 25b of the seat ring 25.
The plane of the inner end portion 25b of the seat ring 25 is inclined at an angle ~ to the mounting plane of the flange 25a of the seat ring 25; that is, at an angle ~ to the planes of the mating surfaces of the valve and the pipes. Accordingly the central axis X - X of the seating surface 25c, that is, the ~9~i3S~
line perpendicular to the plane of the inner end portion 25b passing through the center of the inner end portion 25b, is inclined at an angle ~ to the central axis Y - Y of the valve, which contains a central point O of the axis of rotation of a valve stem 31.
Other embodiments of the seat ring are shown in Figs. 4 and 5. The seat ring 25 shown in Fig. 4 has a flexible coupling portion 25d between the flange portion 25a and the seat portion, so that the seat ring 25 may move flexibly via the flexible coupling portion 25d.
Alternatively, the seat ring 25 shown in Fig. 5, made of a matallic material is provided with a groove 25e in its inner end portion 25h, which is adapted to receive a seat 25f of a soft material such as tetra-fluoroethylene.
Referring again to Figs. 2 and 3, the valve disk 29 is mounted to the valve stem 31 in its eccentric position in the valve chamber 22, via a disk arm 30 which is integrally coupled to the valve disk 29.
When the disk 29 is pivoted to the fully closed contact position, and an outer spherical seating surface 29a of the disk 29 is contacted with the inner spherical seating surface 25c of the seat ring 25, the central axis of the disk 29 is inclined at an angle ~ to the central axis Y - Y of the valve.
l~)G3SS
The valve stem 31, as shown in Fig. 2, is pivotally arranged in the valve chamber 22 of the valve body 21.
The upper portion of the stem 31 is rotatably received into a bearing 34 mounted in a cylindrical bonnet 32 and the lower end portion of the stem 31 is rotatably received into a lower bearing 35 mounted in a bearing recess 33.
The central axis of the bonnet 32 is perpendicular to the central axis Y - Y of the valve and passes through the center O of the valve chamber 22. Hence, the central axis of the stem 31 coaxially fitted into the bonnet 32 is also perpendicular to the central axis of the circular openigs 23 and 24 and passes through the center O of the valve chamber 22. Thus, the disk 29 mounted on the stem 31 pivots about a central axis of the valve body 21.
Between the stem 31 and the bonnet 32, above the bearing 34 are inserted a tubular spacer 36, a packing means 37 above the spacer 36, and a packing stop member 20 38 above the packing means 37. A stop plate 39 is fixed to a flange 40 of the bonnet 32 above and outside of the packing stop member 38 by screw means 41 such as bolts and nuts.
The top end of the stem 31 projects above the bonnet 32 and a handle (not shown) may be mounted to it.
A stop pin 43 prevents the stem 31 from coming out upwards from the valve body 21.
When the valve is to be mounted for operation between two popes, a plurality of fixing bolts 42 are threaded through holes in the flanges of the two pipes and around the outside of the valve body 21 to hold the two pipes to the valve.
The fully open position of the disk 29 is shown in Fig. 3 by the two-dotted lines. From this position, the disk 29 is pivoted to the seat ring 25 by rotating the stem 31, as shown by an arrow. While the disk 29 is truning, the seating surface 29a of the disk 29 does not contact the seating surface 25c of the seat ring 25. Then the seating surface 29a of the disk 29 is brou~ht into contact with the seating surface 25c, and as the disk is further pivoted, both the surfaces 25c and 29a are brought into full contact with each other due to the eccentric pivot center of the arm 30 of the disk 29, as shown in Fig. 3 by the solid lines.
The seat ring 25 is permitted to bend by the circular groove 28 of the retainer 26, as described above, and the surfaces 25c and 29a are flexibly contacted with each other,thereby obtaining a reliable contact pressure therebetween.
In the embodiment shown in Fig. 4, when the disk 29 is brought into contact with the seat ring 25, the surfaces 25c and 29a are held in proper contact with each other by the pivoting force through the flexible coupling portion 25d.
In the embodiment shown in Fig. 5, when the disk 29 is brought into contact with the soft seat material 3~S
25f of the seat ring 25, the seat material 25f is deformed according to the pivoting force, thereby obtaining the proper contact therebetween.
On the other hand, if the stem 31 is rotated in the reverse direction from the closed position, the contact pressure between the surfaces 25c and 29a is gradually decreased and the surfaces 25c and 29a are separated each other to the open position in the reverse manner of that described above.
In a valve according to the present invention, since the stem 31, the bonnet 32 and the bearing hole 33 ; are positioned on the center line of the chamber 22, no eccentric processing is necessary in the construction of the body 21, which thus may be manufactured very much easier than a conventional one. Further, when this valve is to be mounted between the flanges of the flow pipes, since the stem 31 and the bonnet 32 are arranged radially with respect to the valve body 21, the fixing bolts may be properly arranged in the flanges so that no fixing bolt is obstructed by the bonnet 32. Consequently, no lug member is necessary on the valve body for avoiding the obstruction of a bolt by the bonnet.
The seat ring 25 provided with an inclined spherical internal seating surface 25c is easily mounted, the valve construction is very simple, and accordingly the manufacturing process is very straight-forward. Furthermore, the fixing operation of thevalve between the flanges is easily performed.
g 3'j5 In Fig. 6, there is shown anoiher embodiment of the eccentrically rotatable valve of the present invention. This embodiment has the same construction as that described above except that the seating surface 25c of the seat ring 25 is not inclined but parallel to the plane perpendicular to the central axis of the chamber 22 or of the seat ring 29 and that the central line X - X of the seating surface 25c is parallel to - the axis Y - Y of the chamber 22 and is displaced a certain distance from the axis Y - Y when the seating surface 29a of the valve disk 29 is brought into fully closed contact with the seating surface 25c of the seat ring 25.
In this embodiment, it is apparent that the same results as described above can be obtained.
Although the invention has been described in terms of several preferred embodiments, it will be understood by those skilled in the art that various changes and omissions in the form and detail thereof can be made therein without departing from the scope of the invention.
For example, the seat ring may be connected integrally to the valve body, or may be a part of the valve body.
Further, the shapes of the valve chamber, the valve seat and so forth may vary, as long as the axis of rotation of the valve stem is central and yet does not intersect the central axis of the valve disk member.
This invention relates to an eccentrically rotatable valve for controlling fluid flow, and particularly relates to improvements in a no-flange-type eccentrically rotatable valve.
Many valves of this kind have been developed heretofore. For example, there is shown a horizontal cross section of a conventional eccentric rotary valve in Fig. 1, in which a valve disk 11 is eccentrically pivoted within a valve body 14 by means of a valve stem 12 in a valve chamber 10 of the valve body 14 so that the center line of the disk 11 coincides with that of the flow path through the valve body 14 when the disk 11 is brought into the fully closed contact position, while the pivot axis of the valve stem 12 is offset from the center line.
However, the valve discribed above is not without defects. For instance, such a construction involves the provision of a bearing hole 16 of a bonnet 15 for pivotally supporting the stem 12 eccentrically disposed to correspond with the eccentrically rotatable disk 11, and accordingly the manufacture of the valve body 14 is complicated.
Further, when the valve is mounted between pipes for actual operation, it is inserted between the flanges attached to the ends of the pipes and is fixed by bolts 17 passed through the two flanges of the pipes. In this case, however, since the bonnet 15 is arranged in an offset position in the valve body 14, as described above, one of the bolts 17 will be obstructed by the bonnet 15.
63SSi In order to overcome this prob:Lem, the valve body 14 has to be provided with a pair of lug members 18 in its end portions, through which short bolts are passed for mounting the valve to the pipes avoiding the bonnet 15. Consequently, the construc-tion of the valve is made even more complicated and its mounting operation is also rather troublesome.
The present invention seeks to provide an improved eccentrically rotatable valve free from the abovementioned defects.
The present invention further seeks to provide an improved no-flange-type eccentrically rotatable valve which has a simple construction and is readily mounted for operation between pipes.
According to the present invention there is provided an eccentrically rotatable valve having: a valve body having a valve chamber and flow path openings which lead to the valve chamber; a valve seat member having an internal seating surface arranged in one of the flow path openings; an annular retainer removably mounted in the valve body and clampingly engaging an outer portion of the valve seat member to retain said valve seat member in said valve body; a valve stem pivotally mounted on the valve body and having the pivot axis thereof passing through the center of the valve chamber; and a valve disc secured to the valve stem for rotation therewith and having an external seating which in one position forms a proper seating contact with the internal seating surface of the valve seat member; wherein said valve disc has a central axis perpendicular to the plane of the external seating surface of the valve disc which does not inter-sect the axis of rotation of the valve stem, said valve seat mem-ber has an inner portion spaced from said retainer permitting :~ - 3 -, ~, . .
1~963~S~i limited bending of said valve seat me~ber during closing of the valve; and wherein said valve seating surface is in a plane angul-arly disposed wlth respect to a fluid path therethrough; said valve body further comprises face portions around each of the flow openings adapted to mate with corresponding surfaces of pipes to which the valve is to be connected; and said retainer is provided with a circular groove around an inner end portion thereof providing said spacing permitting limited bending of said valve seat member.
The present invention will now be described in detail in terms of several embodiments thereof illustrated in the accom-panying drawings, which are given by way of illustration only and thus are not limitative of the present invention, in which:
Fig. 1 is a horizontal central section of a conventional eccentric rotary valve;
Fig. 2 is a vertical central section of an embodiment of an eccentrically rotatable valve according to the present invention;
Fig. 3 is a horizontal central section of the eccentrically rotatable valve of Fig. 2;
Figs. 4 and 5 are horizontal central sections of other embodiments of a seat ring used in an eccentrically rotatable valve according to the present invention; and Fig. 6 is a horizontal central section of another embodi-ment of the eccentrically rotatable valve according to the present invention.
In Figs. 2 and 3 is shown an embodiment of an eccentrically rotatable valve of the present invention.
A valve body 21 having a substantially spherical valve B
. .
.
1~63S5 chamber 22 provides a pair of circular flow path openings 23 and 24 in its opposite ends, which lead to the chamber 22.
A seat ring 25 which forms a part of the wall of the chamber 22 and includes a flow path hole which leads to the chamber 22, is coaxially disposed in the opening 23, held by an annular retainer 26 by engaging the threaded outer surface of the retainer 26 with the threaded inner surface of the opening 23 in the valve body. The flange portion 25a of the seat ring 25 is interposed between the annular ratainer 26 and the shoulder portion 27 of the valve body 21. The seat ring 25 may be made of any suitable metallic material or plastic material such as tetrafluoroethylene.
The retainer 26 is provided with a circular groove 28 around its inner end so as to allow for the bending tolerance of the seat ring 25.
The inner end portion 25b of the seat ring 25 projects into chamber 22 from the opening 23. A
spherical seating surface 25c is formed in the inner end portion 25b of the seat ring 25.
The plane of the inner end portion 25b of the seat ring 25 is inclined at an angle ~ to the mounting plane of the flange 25a of the seat ring 25; that is, at an angle ~ to the planes of the mating surfaces of the valve and the pipes. Accordingly the central axis X - X of the seating surface 25c, that is, the ~9~i3S~
line perpendicular to the plane of the inner end portion 25b passing through the center of the inner end portion 25b, is inclined at an angle ~ to the central axis Y - Y of the valve, which contains a central point O of the axis of rotation of a valve stem 31.
Other embodiments of the seat ring are shown in Figs. 4 and 5. The seat ring 25 shown in Fig. 4 has a flexible coupling portion 25d between the flange portion 25a and the seat portion, so that the seat ring 25 may move flexibly via the flexible coupling portion 25d.
Alternatively, the seat ring 25 shown in Fig. 5, made of a matallic material is provided with a groove 25e in its inner end portion 25h, which is adapted to receive a seat 25f of a soft material such as tetra-fluoroethylene.
Referring again to Figs. 2 and 3, the valve disk 29 is mounted to the valve stem 31 in its eccentric position in the valve chamber 22, via a disk arm 30 which is integrally coupled to the valve disk 29.
When the disk 29 is pivoted to the fully closed contact position, and an outer spherical seating surface 29a of the disk 29 is contacted with the inner spherical seating surface 25c of the seat ring 25, the central axis of the disk 29 is inclined at an angle ~ to the central axis Y - Y of the valve.
l~)G3SS
The valve stem 31, as shown in Fig. 2, is pivotally arranged in the valve chamber 22 of the valve body 21.
The upper portion of the stem 31 is rotatably received into a bearing 34 mounted in a cylindrical bonnet 32 and the lower end portion of the stem 31 is rotatably received into a lower bearing 35 mounted in a bearing recess 33.
The central axis of the bonnet 32 is perpendicular to the central axis Y - Y of the valve and passes through the center O of the valve chamber 22. Hence, the central axis of the stem 31 coaxially fitted into the bonnet 32 is also perpendicular to the central axis of the circular openigs 23 and 24 and passes through the center O of the valve chamber 22. Thus, the disk 29 mounted on the stem 31 pivots about a central axis of the valve body 21.
Between the stem 31 and the bonnet 32, above the bearing 34 are inserted a tubular spacer 36, a packing means 37 above the spacer 36, and a packing stop member 20 38 above the packing means 37. A stop plate 39 is fixed to a flange 40 of the bonnet 32 above and outside of the packing stop member 38 by screw means 41 such as bolts and nuts.
The top end of the stem 31 projects above the bonnet 32 and a handle (not shown) may be mounted to it.
A stop pin 43 prevents the stem 31 from coming out upwards from the valve body 21.
When the valve is to be mounted for operation between two popes, a plurality of fixing bolts 42 are threaded through holes in the flanges of the two pipes and around the outside of the valve body 21 to hold the two pipes to the valve.
The fully open position of the disk 29 is shown in Fig. 3 by the two-dotted lines. From this position, the disk 29 is pivoted to the seat ring 25 by rotating the stem 31, as shown by an arrow. While the disk 29 is truning, the seating surface 29a of the disk 29 does not contact the seating surface 25c of the seat ring 25. Then the seating surface 29a of the disk 29 is brou~ht into contact with the seating surface 25c, and as the disk is further pivoted, both the surfaces 25c and 29a are brought into full contact with each other due to the eccentric pivot center of the arm 30 of the disk 29, as shown in Fig. 3 by the solid lines.
The seat ring 25 is permitted to bend by the circular groove 28 of the retainer 26, as described above, and the surfaces 25c and 29a are flexibly contacted with each other,thereby obtaining a reliable contact pressure therebetween.
In the embodiment shown in Fig. 4, when the disk 29 is brought into contact with the seat ring 25, the surfaces 25c and 29a are held in proper contact with each other by the pivoting force through the flexible coupling portion 25d.
In the embodiment shown in Fig. 5, when the disk 29 is brought into contact with the soft seat material 3~S
25f of the seat ring 25, the seat material 25f is deformed according to the pivoting force, thereby obtaining the proper contact therebetween.
On the other hand, if the stem 31 is rotated in the reverse direction from the closed position, the contact pressure between the surfaces 25c and 29a is gradually decreased and the surfaces 25c and 29a are separated each other to the open position in the reverse manner of that described above.
In a valve according to the present invention, since the stem 31, the bonnet 32 and the bearing hole 33 ; are positioned on the center line of the chamber 22, no eccentric processing is necessary in the construction of the body 21, which thus may be manufactured very much easier than a conventional one. Further, when this valve is to be mounted between the flanges of the flow pipes, since the stem 31 and the bonnet 32 are arranged radially with respect to the valve body 21, the fixing bolts may be properly arranged in the flanges so that no fixing bolt is obstructed by the bonnet 32. Consequently, no lug member is necessary on the valve body for avoiding the obstruction of a bolt by the bonnet.
The seat ring 25 provided with an inclined spherical internal seating surface 25c is easily mounted, the valve construction is very simple, and accordingly the manufacturing process is very straight-forward. Furthermore, the fixing operation of thevalve between the flanges is easily performed.
g 3'j5 In Fig. 6, there is shown anoiher embodiment of the eccentrically rotatable valve of the present invention. This embodiment has the same construction as that described above except that the seating surface 25c of the seat ring 25 is not inclined but parallel to the plane perpendicular to the central axis of the chamber 22 or of the seat ring 29 and that the central line X - X of the seating surface 25c is parallel to - the axis Y - Y of the chamber 22 and is displaced a certain distance from the axis Y - Y when the seating surface 29a of the valve disk 29 is brought into fully closed contact with the seating surface 25c of the seat ring 25.
In this embodiment, it is apparent that the same results as described above can be obtained.
Although the invention has been described in terms of several preferred embodiments, it will be understood by those skilled in the art that various changes and omissions in the form and detail thereof can be made therein without departing from the scope of the invention.
For example, the seat ring may be connected integrally to the valve body, or may be a part of the valve body.
Further, the shapes of the valve chamber, the valve seat and so forth may vary, as long as the axis of rotation of the valve stem is central and yet does not intersect the central axis of the valve disk member.
Claims (2)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An eccentrically rotatable valve having:
a valve body having a valve chamber and flow path openings which lead to the valve chamber;
a valve seat member having an internal seating surface arranged in one of the flow path openings;
an annular retainer removably mounted in the valve body and clampingly engaging an outer portion of the valve seat member to retain said valve seat member in said valve body;
a valve stem pivotally mounted on the valve body and having the pivot axis thereof passing through the center of the valve chamber; and a valve disc secured to the valve stem for rotation there-with and having an external seating which in one position forms a proper seating contact with the internal seating surface of the valve seat member; wherein said valve disc has a central axis perpendicular to the plane of the external seating surface of the valve disc which does not intersect the axis of rotation of the valve stem, said valve seat member has an inner portion spaced from said retainer permitting limited bending of said valve seat member during closing of the valve; and wherein said valve seating surface is in a plane angularly disposed with respect to a fluid path therethrough;
said valve body further comprises face portions around each of the flow openings adapted to mate with corresponding surfaces of pipes to which the valve is to be connected; and said retainer is provided with a circular groove around an inner end portion thereof providing said spacing permitting limited bending of said valve seat member.
a valve body having a valve chamber and flow path openings which lead to the valve chamber;
a valve seat member having an internal seating surface arranged in one of the flow path openings;
an annular retainer removably mounted in the valve body and clampingly engaging an outer portion of the valve seat member to retain said valve seat member in said valve body;
a valve stem pivotally mounted on the valve body and having the pivot axis thereof passing through the center of the valve chamber; and a valve disc secured to the valve stem for rotation there-with and having an external seating which in one position forms a proper seating contact with the internal seating surface of the valve seat member; wherein said valve disc has a central axis perpendicular to the plane of the external seating surface of the valve disc which does not intersect the axis of rotation of the valve stem, said valve seat member has an inner portion spaced from said retainer permitting limited bending of said valve seat member during closing of the valve; and wherein said valve seating surface is in a plane angularly disposed with respect to a fluid path therethrough;
said valve body further comprises face portions around each of the flow openings adapted to mate with corresponding surfaces of pipes to which the valve is to be connected; and said retainer is provided with a circular groove around an inner end portion thereof providing said spacing permitting limited bending of said valve seat member.
2. An eccentrically rotatable valve according to claim 1, wherein said internal seating surface is located in a plane perpendicular to a fluid flow path therethrough and wherein the center of said inner seating surface is disposed from a plane passing through the axis of rotation of the valve stem.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52-66543 | 1977-06-06 | ||
| JP6654377A JPS541431A (en) | 1977-06-06 | 1977-06-06 | Eccentric rotary valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1096355A true CA1096355A (en) | 1981-02-24 |
Family
ID=13318913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA304,060A Expired CA1096355A (en) | 1977-06-06 | 1978-05-25 | Eccentrically rotatable valve |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS541431A (en) |
| AU (1) | AU3659478A (en) |
| BE (1) | BE867794A (en) |
| CA (1) | CA1096355A (en) |
| DE (1) | DE2824824C2 (en) |
| FR (1) | FR2393995A1 (en) |
| GB (1) | GB1598477A (en) |
| IT (2) | IT7822038V0 (en) |
| NL (1) | NL171741C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4178415A (en) * | 1978-03-22 | 1979-12-11 | Energy Conversion Devices, Inc. | Modified amorphous semiconductors and method of making the same |
| SE506438C2 (en) * | 1996-01-25 | 1997-12-15 | Somas Ventiler | Ball segment valve and device at ball segment valve |
| DE102011087801B4 (en) * | 2011-02-22 | 2013-04-25 | Physik Instrumente (Pi) Gmbh & Co. Kg | ultrasonic motor |
| RU2621586C1 (en) * | 2016-05-23 | 2017-06-06 | Василий Петрович Ануфриев | Segmented valve with heating jacket |
| US11953113B2 (en) | 2020-02-14 | 2024-04-09 | Crane Chempharma & Energy Corp. | Valve with unobstructed flow path having increased flow coefficient |
| US11946557B2 (en) | 2020-02-14 | 2024-04-02 | Crane Chempharma & Energy Corp. | Valve with unobstructed flow path having increased flow coefficient |
| US11519509B2 (en) | 2020-02-14 | 2022-12-06 | Crane Chempharma & Energy Corp. | Valve with unobstructed flow path having increased flow coefficient |
| US11841089B2 (en) * | 2020-02-14 | 2023-12-12 | Crane Chempharma & Energy Corp. | Valve with unobstructed flow path having increased flow coefficient |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7022320U (en) * | 1900-01-01 | Deutsche Babcock & Wilcox Ag | Sealing of shut-off devices, preferably for pipelines | |
| NL18333C (en) * | 1926-03-13 | |||
| FR1226460A (en) * | 1959-01-16 | 1960-07-13 | Improvements to ball valves | |
| JPS4413249Y1 (en) * | 1964-12-26 | 1969-06-02 | ||
| US3379408A (en) * | 1965-02-08 | 1968-04-23 | Acf Ind Inc | Eccentric plug valve |
| AT293124B (en) * | 1966-03-25 | 1971-09-27 | Acf Ind Inc | Valve |
| FR1521594A (en) * | 1967-03-09 | 1968-04-19 | Worthington | New type globe valve |
| US3475003A (en) * | 1967-11-20 | 1969-10-28 | Henry Paluszek | Eccentric ball valve with antislamming means |
| US3623696A (en) * | 1969-12-30 | 1971-11-30 | Masoneilan Int Inc | Eccentric, sealless, rotary valve for flow control |
| CH549179A (en) * | 1972-03-14 | 1974-05-15 | Sulzer Ag | GAS-TIGHT LOCKING FLAP. |
| DE2344911C3 (en) * | 1973-09-06 | 1978-10-12 | Eckardt Ag, 7000 Stuttgart | Valve |
| DE2355773C3 (en) * | 1973-11-08 | 1978-06-08 | Honeywell Gmbh, 6000 Frankfurt | Valve |
| US3937441A (en) * | 1975-02-21 | 1976-02-10 | Baumann Hans D | Rotary valve |
| FR2302462A1 (en) * | 1975-02-28 | 1976-09-24 | Honeywell Gmbh | Rotary valve with spherical segment valve plate - attached by fine thread bolt to support connected to actuator |
-
1977
- 1977-06-06 JP JP6654377A patent/JPS541431A/en active Pending
-
1978
- 1978-05-25 CA CA304,060A patent/CA1096355A/en not_active Expired
- 1978-05-29 AU AU36594/78A patent/AU3659478A/en active Pending
- 1978-05-30 GB GB24383/78A patent/GB1598477A/en not_active Expired
- 1978-06-05 BE BE2057036A patent/BE867794A/en not_active IP Right Cessation
- 1978-06-05 FR FR787816705A patent/FR2393995A1/en active Granted
- 1978-06-05 NL NLAANVRAGE7806101,A patent/NL171741C/en not_active IP Right Cessation
- 1978-06-06 DE DE2824824A patent/DE2824824C2/en not_active Expired
- 1978-06-06 IT IT7822038U patent/IT7822038V0/en unknown
- 1978-06-06 IT IT24257/78A patent/IT1095196B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| FR2393995B1 (en) | 1982-10-08 |
| JPS541431A (en) | 1979-01-08 |
| FR2393995A1 (en) | 1979-01-05 |
| DE2824824A1 (en) | 1978-12-07 |
| BE867794A (en) | 1978-10-02 |
| NL171741C (en) | 1983-05-02 |
| NL7806101A (en) | 1978-12-08 |
| IT1095196B (en) | 1985-08-10 |
| DE2824824C2 (en) | 1985-01-17 |
| GB1598477A (en) | 1981-09-23 |
| AU3659478A (en) | 1979-12-06 |
| IT7822038V0 (en) | 1978-06-06 |
| IT7824257A0 (en) | 1978-06-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |