CN103574100B - Tee ball valve - Google Patents
Tee ball valve Download PDFInfo
- Publication number
- CN103574100B CN103574100B CN201310566810.9A CN201310566810A CN103574100B CN 103574100 B CN103574100 B CN 103574100B CN 201310566810 A CN201310566810 A CN 201310566810A CN 103574100 B CN103574100 B CN 103574100B
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- China
- Prior art keywords
- valve
- ball
- valve body
- seal seat
- flow channel
- 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.)
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/087—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
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- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating means
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- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0689—Packings between housing and plug
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention provides a kind of tee ball valve, comprise valve body and valve rod, valve body level is provided with first, second flow pass and flow channel, three is intersected in valve pocket in valve body, flow channel and the first flow pass are in line, channel vertical is flowed out with second, valve ball is provided with in valve pocket, be provided with between valve ball and valve body and lay respectively at inlet seal seat and the exit seal seat that channel side is flowed out in flow channel side and first, the two forms sealing pair with valve ball respectively, the valve body being positioned at the top of valve pocket is provided with the valve rod mounting hole of downward-extension, valve rod is connected with valve body rotary seal through valve rod mounting hole, the lower end of valve rod is connected with valve ball, valve ball is provided with its axis and crosses the central flowing hole of the horizontal-extending of the valve ball centre of sphere and be opened in the arc overcurrent groove that described ball surface middle and lower part extends in vertical plane, longitudinal symmetry plane of arc overcurrent groove crosses the described valve ball centre of sphere, the present invention is realizing the flow not affecting valve while two-way opens a road shutoff, and good airproof performance.
Description
Technical field
The present invention relates to a kind of tee ball valve, be particularly useful for the switching controls of indoor heating pipeline break-make.
Background technique
Existing common tee ball valve generally adds non-return core in valve ball, structure slightly complicated, makes processing, assembly cost is higher, and when valve is operated in different station, flow difference is larger.
Summary of the invention
In order to solve the problem, the invention provides a kind of tee ball valve, adopt the valve ball of special construction, not establishing non-return core, realizing not affecting flow while two-way opens a road shutoff.
Technological scheme provided by the invention has: a kind of tee ball valve, comprise valve body and valve rod, described valve body level is provided with the first flow pass, second flow pass and flow channel, the intersection of three in described valve body is valve pocket, described flow channel and the first flow pass are in line, and flow out channel vertical with second, valve ball is provided with in described valve pocket, be provided with between described valve ball and valve body and lay respectively at inlet seal seat and the exit seal seat that channel side is flowed out in described flow channel side and described first, described inlet seal seat and exit seal seat form sealing pair with described valve ball respectively, the described valve body being positioned at the top of described valve pocket is provided with the valve rod mounting hole of downward-extension, described valve rod is connected with described valve body rotary seal through described valve rod mounting hole, the lower end of described valve rod is connected with described valve ball, described valve ball is provided with its axis and crosses the central flowing hole of the horizontal-extending of the valve ball centre of sphere and be opened in the arc overcurrent groove of downward-extension on described ball surface middle and lower part, longitudinal symmetry plane of described arc overcurrent groove perpendicular to described central flowing hole and cross the described valve ball centre of sphere.
Described inlet seal seat and exit seal seat are preferably the sealing seat of polytetrafluoroethylmaterial material.
The first flow channel outlet end flowing out feeder connection end and described valve gap of described valve body is provided with a sealing seat attachment face separately, described sealing seat attachment face can be the planar annular of band outer side wall, and described inlet seal seat and exit seal seat can be separately fixed on corresponding sealing seat attachment face.
Described valve body can comprise the main valve body and valve gap that are mutually permanently connected and surround described valve pocket together, and first, second flow pass described and valve rod mounting hole can be arranged on described main valve body, and described flow channel then can be arranged on described valve gap.
Adopt between described main valve body and valve gap and be threaded and seal.
Described valve pocket preferably becomes column, and coaxial with described flow channel, and between described valve pocket and valve ball, the part of close described flow channel is for having the wedge shape space of interior annular surface.
The difference of the width of described arc overcurrent groove and the diameter of the degree of depth and described central flowing hole is preferably more than 10% of described central flowing hole diameter.
Woodruff key structure is preferably arranged in the lower end of described valve rod, and the upper end of described valve ball has the Woodruff key slots and keyways adapted, and described woodruff key structure matches with Woodruff key slots and keyways and realizes the connection of described valve rod and valve ball.
For any one tee ball valve above-mentioned, position and the length of described arc overcurrent groove need meet following requirement: when the axis of described central flowing hole be in the axis of the second flow pass in the same way position time, the peak of the sealing pair that the peak of the top edge of described arc overcurrent groove is formed lower than described inlet seal seat and valve ball, the minimum point of lower limb is between described inlet seal seat and exit seal seat.
The upper end of described valve rod can attended operation handle or drive unit.
The invention has the beneficial effects as follows: owing to arranging arc overcurrent groove on valve ball, make when central flowing hole is perpendicular to flow channel, flow channel is connected with the second flow pass via arc overcurrent groove, valve pocket, achieves flow channel and the second flow pass is opened, first flow out pathway closure, when central flowing hole is communicated with flow channel straight line, medium flows to the first flow pass by flow channel through central flowing hole, second flow pass is cut off, achieve flow channel and the first flow pass is open-minded, second flows out pathway closure, namely ball valve two-way is achieved open-minded, the using effect that one tunnel turns off, and, due to the width of arc overcurrent groove, the special design of the physical dimensions such as the degree of depth, its through-current capability is made substantially to reach the through-current capability level of central flowing hole, when making ball valve be operated in different station, flow is close, flow can not be affected because the transposition of valve ball switches substantially.
Because valve pocket is column, between the wall of described valve pocket and valve ball, the part of close described flow channel is for having the wedge shape space IV of interior annular surface, when medium is introduced into above-mentioned wedge shape space from flow channel after arc overcurrent groove, because volume increases, pressure medium obtains reduction to a certain extent, serves certain decompression.
Owing to being provided with annular groove in the docking site of main valve body and valve gap, and seal ring thermal expansion coefficient being less than main valve body and valve gap is inlaid in described annular groove, when running into high temperature or main valve in-vivo medium is high-temperature high-pressure medium, expansion coefficient due to seal ring is less than the thermal expansion coefficient of main valve body and valve gap, relative expansion degree is little, therefore can closely bind round on annular groove, effectively prevent main valve body and valve gap to be out of shape at high temperature under high pressure and laterally deviate from, making sealing more reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the present of invention;
Fig. 2 is the right TV structure schematic diagram of Fig. 1;
Fig. 3 be Fig. 1 look up structural representation;
Fig. 4 is the perspective view of valve ball of the present invention;
Fig. 5 is the sectional view perpendicular to the great circle place plane of central flowing hole on valve ball sphere;
Fig. 6 is the structural representation of an alternative embodiment of the invention;
Fig. 7 is the partial enlarged drawing of A in Fig. 6.
Embodiment
As shown in figs. 1-7, the invention provides a kind of tee ball valve, comprise valve body and valve rod 6, described valve body level is provided with the first flow pass I, second flow pass II and flow channel III, the intersection of three in described valve body is valve pocket, described flow channel and the first flow pass are in line, and flow out channel vertical with second, valve ball 3 is provided with in described valve pocket, be provided with between described valve ball and valve body and lay respectively at inlet seal seat 5 and the exit seal seat 4 that channel side is flowed out in described flow channel side and described first, described inlet seal seat and exit seal seat form sealing pair with described valve ball respectively.The first flow channel outlet end flowing out feeder connection end and described valve gap of described valve body is provided with a sealing seat attachment face separately, described sealing seat attachment face can be the planar annular of band outer side wall, and described inlet seal seat and exit seal seat are separately fixed on corresponding sealing seat attachment face.The described valve body being positioned at the top of described valve pocket is provided with the valve rod mounting hole of downward-extension, described valve rod is provided with several for embedding the circumferential groove in its end portion of seal ring 8, described valve rod is connected with described valve body rotary seal through described valve rod mounting hole, the lower end of described valve rod is connected with described valve ball, described valve ball is provided with its axis and crosses the central flowing hole 31 of the horizontal-extending of the valve ball centre of sphere and be opened in the arc overcurrent groove 32 of downward-extension on described ball surface middle and lower part, longitudinal symmetry plane of described arc overcurrent groove perpendicular to described central flowing hole and cross the described valve ball centre of sphere.Bearing of trend (or claiming length direction) cutting that so-called longitudinal symmetry plane refers to along described arc overcurrent groove makes the section plane of two-part symmetry of incision.
Described inlet seal seat and exit seal seat are preferably the sealing seat of polytetrafluoroethylmaterial material, and it has good machinery, chemical property, can significantly improve the abilities such as the corrosion protection of Sealing, antiscour, improve sealing reliability.
Described valve body can comprise the main valve body 1 and valve gap 2 that are mutually permanently connected and surround described valve pocket together, and first, second flow pass described and valve rod mounting hole can be arranged on described main valve body, and described flow channel is then arranged on described valve gap.Adopt between described main valve body and valve gap and be threaded, the connecting end of described main valve body and valve gap is respectively equipped with the docking end face of docking mutually, the outer edge of two described docking end faces is equipped with the annular breach of annular step mesa-shaped, described annular breach is butted into an annular groove mutually, seal ring 9 is installed in described annular groove, the exotic material that described seal ring adopts thermal expansion coefficient to be less than described main valve body and valve gap is made, the inner side surface of described seal ring and the bottom surface of described annular groove closely cooperate, by the design of this docking end-face structure and seal ring, achieve the sealing of main valve body and valve cover chamber.Sealing sealing structure is good, long service life, even if medium temperature and/or pressure raise also easily leakage failure can not occur.When solving rubber seal rings for seal under prior art, medium temperature raises and causes rubber seal deliquescing even carbonization and cause seal failure, and pressure medium raises and causes rubber seal to cause the faults such as seal failure because of high pressure generation plastic deformation.
Usually, described main valve body, valve gap and seal ring all can adopt metal to make, to process, and are adapted to high temperature and high pressure environment, and in this enforcement, the material of described main valve body and valve gap is brass, and the material of described seal ring is stainless steel.
Usually, described annular groove and described seal ring can be all rotational symmetric cylindrical shape, to facilitate processing, under existing certain processing conditions, improve machining accuracy.Annular breach on described valve body and the annular breach on described valve gap preferably adopt equal-sized mirror image, to avoid butt-welded side seam secundly, reduce sealability.
The thickness of described seal ring is preferably slightly less than the width of described annular groove, and leaves axial assemblage gap between described annular groove, to facilitate installation and maintenance, and ensure inside seal ring with annular groove bottom sealing.Preferably, the butt-welded side seam between described valve body and two docking end faces of described valve gap should be positioned at the axial intermediate portion inside described seal ring usually, to improve the reliability of sealing.
Valve pocket described in the present embodiment is column, the dead in line of its axis and described flow channel, and between the wall of described valve pocket and valve ball, the part of close described flow channel is for having the wedge shape space IV of interior annular surface.Due under the specific structural characteristics in gap and length (medium circulation distance) between valve ball and the wall of valve pocket, velocity of medium or turnover pressure reduction and resistance between form specific curved line relation, by suitably arranging the size in the cross section between valve ball and the wall of valve pocket, effectively can realize the control to flow or input end pressure to a certain extent, meet the requirements such as required decompression and voltage stabilizing.
The width of described arc overcurrent groove and the degree of depth are respectively close to the diameter of described central flowing hole, and its difference is preferably more than 10% of described central flowing hole diameter.The degree of depth of described arc overcurrent groove can be the 1/5-1/3 of the diameter of described valve ball, is preferably 1/4 of the diameter of described valve ball.The width of described arc overcurrent groove also will be not more than the spacing of inlet seal seat and exit seal seat.Adopt the arc overcurrent groove of said structure size, its through-current capability is close with central flowing hole or substantially identical, even if therefore ball valve is operated in different stations, the flow of valve also can not be subject to obvious impact.
The connection of valve rod and valve ball can realize by other key, what adopt in the present embodiment is the structure 61 underpart of valve rod being designed to key (as woodruff key), offer keyway (as the Woodruff key slots and keyways) structure 33 matched in the relevant position (as upper end) of valve ball, described woodruff key structure and Woodruff key slots and keyways match and realize valve rod and be connected with the direct of valve ball.The upper end attended operation handle 7 of described valve rod or other drive units, as being Vidacare corp.
Working principle of the present invention is: operating grip or other drive units drive described valve rod to rotate, valve rod drives valve ball at horizontal rotation in surface again, control valve ball and between the working position of 90 degree, rotate switching at following two: position (1), described central flowing hole is communicated with flow channel straight line, medium flows to the first flow pass by flow channel through central flowing hole, and the second flow pass is cut off; The described central flowing hole in position (2) is perpendicular to flow channel, one end be positioned in the middle part of valve ball of described arc overcurrent groove communicates with flow channel, in one end of valve ball bottom between inlet seal seat and exit seal seat, communicate with the valve pocket between inlet seal seat and exit seal seat, now described first flow pass is cut off, medium enters arc overcurrent groove from flow channel, then enters the second flow pass through wedge shape space.
Present invention achieves flow channel and the first flow pass is opened, second flow out that pathway closure and flow channel and the second flow pass are opened, the first effect flowing out pathway closure.
" interior " used in the present invention, " outward ", " on ", D score etc. represents that the word in direction is only used to the facility stated, do not form to actual user to restriction.Arrow direction indication in accompanying drawing is media flow direction under shown position.
Claims (10)
1. a tee ball valve, comprise valve body and valve rod, it is characterized in that described valve body level is provided with the first flow pass, second flow pass and flow channel, the intersection of three in described valve body is valve pocket, described flow channel and the first flow pass are in line, and flow out channel vertical with second, valve ball is provided with in described valve pocket, be provided with between described valve ball and valve body and lay respectively at inlet seal seat and the exit seal seat that channel side is flowed out in described flow channel side and described first, described inlet seal seat and exit seal seat form sealing pair with described valve ball respectively, the described valve body being positioned at the top of described valve pocket is provided with the valve rod mounting hole of downward-extension, described valve rod is connected with described valve body rotary seal through described valve rod mounting hole, the lower end of described valve rod is connected with described valve ball, described valve ball is provided with its axis and crosses the central flowing hole of the horizontal-extending of the valve ball centre of sphere and be opened in the arc overcurrent groove of downward-extension on described ball surface middle and lower part, longitudinal symmetry plane of described arc overcurrent groove perpendicular to described central flowing hole and cross the described valve ball centre of sphere, described valve body comprises the main valve body and valve gap that are mutually permanently connected and surround described valve pocket together, the docking site of described main valve body and valve gap is provided with annular groove, the seal ring that thermal expansion coefficient is less than described main valve body and valve gap is embedded with in described annular groove, described main valve body, valve gap and seal ring all adopt metal to make, between described valve pocket and valve ball, the part of close described flow channel is for having the wedge shape space of interior annular surface.
2. tee ball valve as claimed in claim 1, is characterized in that described inlet seal seat and exit seal seat are the sealing seat of polytetrafluoroethylmaterial material.
3. tee ball valve as claimed in claim 2, it is characterized in that the first flow channel outlet end flowing out feeder connection end and described valve gap of described valve body is provided with a sealing seat attachment face separately, described sealing seat attachment face is the planar annular of band outer side wall, and described inlet seal seat and exit seal seat are separately fixed on corresponding sealing seat attachment face.
4. tee ball valve as claimed in claim 3, it is characterized in that first, second flow pass described and valve rod mounting hole are arranged on described main valve body, described flow channel is arranged on described valve gap.
5. tee ball valve as claimed in claim 4, is characterized in that described main valve body and valve gap are threaded and seal.
6. tee ball valve as claimed in claim 5, is characterized in that described valve pocket becomes column, and coaxial with described flow channel.
7. tee ball valve as claimed in claim 6, is characterized in that the difference of the width of described arc overcurrent groove and the diameter of the degree of depth and described central flowing hole is no more than 10% of described central flowing hole diameter.
8. tee ball valve as claimed in claim 7, it is characterized in that woodruff key structure is arranged in the lower end of described valve rod, the upper end of described valve ball has Woodruff key slots and keyways, and described woodruff key structure matches with Woodruff key slots and keyways and realizes the connection of described valve rod and valve ball.
9. the tee ball valve as described in claim 1,2,3,4,5,6,7 or 8, it is characterized in that when the axis of described central flowing hole be in the axis of the second flow pass in the same way position time, the peak of the sealing pair that the peak of the top edge of described arc overcurrent groove is formed lower than described inlet seal seat and valve ball, the minimum point of lower limb is between described inlet seal seat and exit seal seat.
10. tee ball valve as claimed in claim 9, is characterized in that upper end attended operation handle or the drive unit of described valve rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310566810.9A CN103574100B (en) | 2013-11-13 | 2013-11-13 | Tee ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310566810.9A CN103574100B (en) | 2013-11-13 | 2013-11-13 | Tee ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103574100A CN103574100A (en) | 2014-02-12 |
| CN103574100B true CN103574100B (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310566810.9A Active CN103574100B (en) | 2013-11-13 | 2013-11-13 | Tee ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103574100B (en) |
Families Citing this family (12)
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|---|---|---|---|---|
| CN103878135A (en) * | 2014-04-04 | 2014-06-25 | 殷培星 | Valve special for photovoltaic power station solar panel cleaning system |
| CN106641330A (en) * | 2015-10-30 | 2017-05-10 | 罗凤玲 | Detachable pipeline reversing valve and manufacturing and mounting method thereof |
| CN106763860B (en) * | 2016-12-14 | 2023-06-23 | 成都福禄泰流体设备有限公司 | Ball core of ball valve |
| CN108571602A (en) * | 2017-03-09 | 2018-09-25 | 宁波会德丰铜业有限公司 | Valve and its valve body |
| CN107811521A (en) * | 2017-11-30 | 2018-03-20 | 黄淮亮 | Exempt from soaking and washing device |
| CN107837000A (en) * | 2017-11-30 | 2018-03-27 | 黄淮亮 | Exempt from soak type fully automatic rice cooker |
| CN109281885B (en) * | 2018-09-30 | 2024-02-20 | 宁波天祥新华液压有限公司 | Unloading ball valve |
| JP7082374B2 (en) * | 2019-05-22 | 2022-06-08 | 株式会社不二工機 | Flow switching valve |
| CN110327573B (en) * | 2019-07-01 | 2020-04-03 | 北京力升高科科技有限公司 | Hosepipe switches and release |
| CN110665428A (en) * | 2019-11-11 | 2020-01-10 | 晋江肯乐贸易有限公司 | Liquid outlet device applied to color mixer |
| CN111810670B (en) * | 2020-07-31 | 2021-11-26 | 衡阳泰豪通信车辆有限公司 | Fluid control equipment for shelter |
| CN112963581B (en) * | 2020-12-22 | 2023-03-28 | 洪伟渠 | Proportional three-way valve core of hydrogen fuel cell cooling system and manufacturing method thereof |
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| CN2493799Y (en) * | 2001-07-02 | 2002-05-29 | 王延龄 | Three-way regulation ball valve |
| CN201599454U (en) * | 2010-01-11 | 2010-10-06 | 大连熵立得传热技术有限公司 | Iso-flux n-type three-way valve |
| CN202708175U (en) * | 2012-04-18 | 2013-01-30 | 佛山市日丰企业有限公司 | Valve ball and frost valve provided with the same |
| CN103335129A (en) * | 2013-07-16 | 2013-10-02 | 北京艾迪西暖通科技有限公司 | High-temperature high-pressure ball valve |
| CN203641581U (en) * | 2013-11-13 | 2014-06-11 | 北京艾迪西暖通科技有限公司 | Three-way ball valve |
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2013
- 2013-11-13 CN CN201310566810.9A patent/CN103574100B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2493799Y (en) * | 2001-07-02 | 2002-05-29 | 王延龄 | Three-way regulation ball valve |
| CN201599454U (en) * | 2010-01-11 | 2010-10-06 | 大连熵立得传热技术有限公司 | Iso-flux n-type three-way valve |
| CN202708175U (en) * | 2012-04-18 | 2013-01-30 | 佛山市日丰企业有限公司 | Valve ball and frost valve provided with the same |
| CN103335129A (en) * | 2013-07-16 | 2013-10-02 | 北京艾迪西暖通科技有限公司 | High-temperature high-pressure ball valve |
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Also Published As
| Publication number | Publication date |
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| CN103574100A (en) | 2014-02-12 |
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