CN108006254A - A kind of PE ends G type all-welded ball valves - Google Patents
A kind of PE ends G type all-welded ball valves Download PDFInfo
- Publication number
- CN108006254A CN108006254A CN201711230579.0A CN201711230579A CN108006254A CN 108006254 A CN108006254 A CN 108006254A CN 201711230579 A CN201711230579 A CN 201711230579A CN 108006254 A CN108006254 A CN 108006254A
- Authority
- CN
- China
- Prior art keywords
- valve body
- valve
- connecting pin
- rod
- sphere
- 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
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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
- 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
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/023—Spindle sealings with stuffing-box ; Sealing rings for spindles which only rotate, i.e. non-rising spindles
- F16K41/026—Spindle sealings with stuffing-box ; Sealing rings for spindles which only rotate, i.e. non-rising spindles for rotating valves
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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
- F16K5/08—Details
-
- 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
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of PE ends G type all-welded ball valves, including valve body, the both ends of valve body are both provided with valve body connecting pin, the end of valve body connecting pin is connected with PE pipes, PE is managed is provided with valve body tooth-shape structure between valve body connecting pin, valve body connecting pin top is connected with desorption tube, the top of desorption tube, which is connected with, diffuses ball valve, the top center of valve body is provided with height and adjusts extension rod, the inside for highly adjusting extension rod is socketed with valve rod, valve body axle sleeve is socketed with the outside of valve rod, the apical lateral of valve rod is provided with valve rod connector sleeve.The present invention is designed using advanced spherical valve body and the single weld seam fabricated structure in longitudinal direction, there is provided valve enough rigidity and intensity, effectively overcome the stress of construction and topography variation generation, moulded and changed using PE steel, the PE pipes of standard are set directly on valve, facilitate user to construct；Height-adjustable operation extension rod, is suitable for different buried depth operating modes, is a kind of more reliable safety on gas transmission and distribution PE pipelines.
Description
Technical field
The present invention relates to a kind of ball valve, more particularly to a kind of PE ends G type all-welded ball valves.
Background technology
It is well known that ball valve comes out in the 1950s, with the rapid development of science and technology, production technology and product
Structure is continuously improved, and in the 40 short years, has been developed rapidly as a kind of main valve class, flourishing in western industrial
Country, the use of ball valve constantly rises year by year, and ball valve is mainly used to make in pipeline cuts off, distributes and change medium
Flow direction, it only needs just can be closed tightly with the rotating torque of the operation that is rotated by 90 ° and very little, and ball valve optimum is done
Switch, stop valve use, V-type ball valve, and electrically operated valve is in addition to it should be noted that pipe parameter, it should be specifically noted that its environment bar for using
Part, since the electric device in electrically operated valve is an electromechanical equipment, its use state is influenced very big, usual shape by its use environment
Under state, electrical ball valve, butterfly valve in following environment using paying special attention to, since the spool of hard seal ball valve is steel alloy surfacing,
Sealing ring is steel alloy built-up welding, so hard seal ball valve will not produce too big abrasion in switch, due to hard seal ball valve
Sealing is to use underhand polish, until spool and sealing ring fit like a glove and could use, so his sealing performance is reliable,
Together with sealing ring is tightly embraced with spool using spring due to the sealing ring bottom of hard seal ball valve, so surpassing in extraneous strength
Switch is very light when crossing the pretightning force of spring, is widely used to oil, chemical industry, power generation, papermaking, atomic energy, aviation, rocket etc.
In all departments, and people's daily life.
Ball-valve structure of the prior art is not stable and firm, there is a situation where leaking to occur, while internal weldering
Insufficient strength is connect, there are serious security risk, and security incident, while the installation strength of ball valve easily occurs using lower for a long time
Requirement is not reached, valve be also easily damaged during buried installation, leads to not use, influence to work normally yet.
The content of the invention
The defects of the technical problem to be solved in the present invention is the prior art is overcome, there is provided a kind of PE ends G type all-welded ball valves,
Designed using advanced spherical valve body and the single weld seam fabricated structure in longitudinal direction, there is provided valve enough rigidity and intensity, effective gram
The stress that clothes construction and topography variation produce；Moulded and changed using PE steel, the PE pipes of standard are set directly on valve, it is convenient to use
Construct at family；Height-adjustable operation extension rod, is suitable for different buried depth operating modes, be on gas transmission and distribution PE pipelines it is a kind of more
It is reliable and secure.
In order to solve the above technical problem, the present invention provides following technical solution：
A kind of PE ends G type all-welded ball valves of the present invention, including valve body, the both ends of the valve body are both provided with valve body connecting pin, institute
The end for stating valve body connecting pin is connected with PE pipes, and valve body tooth-shape structure is provided between the PE pipes and valve body connecting pin, described
Valve body connecting pin top is connected with desorption tube, and the top of the desorption tube, which is connected with, diffuses ball valve, the top center of the valve body
Height is installed and adjusts extension rod, the inside that the height adjusts extension rod is socketed with valve rod, is socketed with the outside of the valve rod
Valve body axle sleeve, the apical lateral of the valve rod are provided with valve rod connector sleeve, and the top of the valve rod connector sleeve is provided with baffle ring, institute
State and O-ring is provided with baffle ring, the top of the baffle ring is provided with support ring, and the top of the support ring is provided with turbine, institute
The inside for stating valve body is provided with sphere, and the both ends of the sphere are respectively connected with adapter, valve is provided between the adapter and sphere
Seat, the top center of the sphere is provided with anti-static spring.
As a preferred technical solution of the present invention, the height adjusts and is provided with external seal on the outside of the both ends of extension rod
Enclose, sealing locking plug screw is provided with the outside of the exterior seal ring.
As a preferred technical solution of the present invention, the PE pipes are mutually stung with valve body connecting pin by valve body tooth-shape structure
Close.
As a preferred technical solution of the present invention, the sphere is connected with valve body connecting pin by valve seat.
As a preferred technical solution of the present invention, the valve body is spherical forged steel valve body, and the valve body is single for longitudinal direction
Weld seam all-welded structure.
As a preferred technical solution of the present invention, the valve body connecting pin is connected with diffusing ball valve by desorption tube
Connect.
As a preferred technical solution of the present invention, the bottom of the sphere is provided with lower support shaft.
Compared with prior art, beneficial effects of the present invention are as follows：
1：The present invention is designed using advanced spherical valve body and the single weld seam fabricated structure in longitudinal direction, there is provided the enough rigidity of valve and
Intensity, effectively overcomes the stress of construction and topography variation generation.
2：The PE pipes of standard are set directly on valve using the modeling conversion of PE steel, are facilitated user to construct by the present invention.
3：The height-adjustable operation extension rod of the present invention, is suitable for different buried depth operating modes, manages gas transmission and distribution PE
More reliable safety on line.
Brief description of the drawings
Attached drawing is used for providing a further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
Apply example to be used to explain the present invention together, be not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the partial structural diagram of the present invention；
In figure：1st, sphere；2nd, valve body；3rd, valve seat；4th, take over；5th, valve rod；6th, valve stem sleeve；7th, valve rod connector sleeve；8th, baffle ring；9、
O-ring；10th, support ring；11st, turbine；12nd, anti-static spring；13rd, desorption tube；14th, valve body connecting pin；15th, valve body tooth form knot
Structure；16th, PE is managed；17th, ball valve is diffused；18th, height adjusts extension rod；19th, lower support shaft；20th, sealing locking plug screw；21st, it is outer close
Seal.
Embodiment
The preferred embodiment of the present invention is illustrated below in conjunction with attached drawing, it will be appreciated that described herein preferred real
Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Embodiment 1
As shown in Figs. 1-2, the present invention provides a kind of PE ends G type all-welded ball valves, including valve body 2, the both ends of valve body 2 are both provided with
Valve body connecting pin 14, the end of valve body connecting pin 14 are connected with PE pipes 16, valve are provided between PE pipes 16 and valve body connecting pin 14
Body tooth-shape structure 15,14 top of valve body connecting pin are connected with desorption tube 13, and the top of desorption tube 13, which is connected with, diffuses ball valve 17, valve
The top center of body 2 is provided with height and adjusts extension rod 18, and the inside that height adjusts extension rod 18 is socketed with valve rod 5, valve rod 5
Outside is socketed with valve body axle sleeve 6, and the apical lateral of valve rod 5 is provided with valve rod connector sleeve 7, and the top of valve rod connector sleeve 7 is provided with
Baffle ring 8, is provided with O-ring 9 on baffle ring 8, the top of baffle ring 8 is provided with support ring 10, and the top of support ring 10 is provided with turbine
11, the inside of valve body 2 is provided with sphere 1, and the both ends of sphere 1 are respectively connected with adapter 4, valve seat is provided between adapter 4 and sphere 1
3, the top center of sphere 1 is provided with anti-static spring 12.
Highly adjust and be provided with exterior seal ring 21 on the outside of the both ends of extension rod 18, the outside of exterior seal ring 21 is provided with sealing
Plug screw 20 is locked, the exterior seal ring 21 of setting, which can be adjusted height outside extension rod 18, to be sealed, and is strengthened sealing intensity, is passed through
Sealing locking plug screw 20 is locked.
PE pipes 16 are engaged with valve body connecting pin 14 by 15 phase of valve body tooth-shape structure, valve body tooth-shape structure 15 make PE pipes 16 with
14 connection structure of valve body connecting pin is more firm.
Sphere 1 is connected with valve body connecting pin 4 by valve seat 3, by the valve seat 3 of setting sphere 1 can be made to be connected with valve body
The connection of end 4, conveniently carries out operation control.
Valve body 2 is spherical forged steel valve body, and for valve body 2 for the single weld seam all-welded structure in longitudinal direction, the internal structure for strengthening valve body is strong
Degree, lifts use scope.
Valve body connecting pin 14 is connected with diffusing ball valve 17 by desorption tube 13, is connected by the desorption tube 13 and valve body of setting
Connect end 14 to be connected, it is diffused ball valve 17 and be attached use.
The bottom of sphere 1 is provided with lower support shaft 19, and the support shaft 19 of setting plays the role of support positioning.
Specifically, in the use of the present invention, valve body 2 is spherical forged steel valve body, valve body 2 welds knot entirely for the single weld seam in longitudinal direction
Structure, makes that its valve mechanism is most compact, volume is minimum, weight is most light, maximum intensity, is more uniformly stressed, and valve both ends pass through valve
The broached-tooth design of body tooth-shape structure 15 integrally carries out steel modeling conversion, makes its connection structure more firm, longitudinal direction list welding seam distance valve
Seat 3 is farthest, avoids influence of 2 welding heat of valve body to valve seat 3, stress from being far below double welding line structures, eliminates all potential outer
Hidden danger is leaked, there is best safety performance, sphere 1 is positioned using valve rod 5 with lower support shaft 19, and valve seat 3 is in initial tension of spring and work
Sphere 1 is pressed under plug effect effect and realizes sealing, and can be realized with sphere 1 and make middle effect by oneself in axial floating, sealing force with
The increase of pipeline pressure and be automatically increased, fixed ball, piston type floating structure valve seat 3 and 3 sealing surface of valve seat of specially treated, ball
Valve has an extremely low operation moment of torsion, and valve seat 3 is PMSS structures using base metal sealing plus embedded soft seal, soft seal material
Material is embedded in water-drop-shaped groove, avoids soft sealing material from going out seal groove by medium differential pressure, and service life length, sealing effect is good,
Metal sealing is formed with sphere 1 after valve catches fire and sealed, it is ensured that the fire protecting performance of valve, the sealing of valve rod 5 are independent using twice
Seal receptacle, two ring self-fastening rings are set on each seal receptacle respectively, and centre sets soft graphite fire proof seal circle, top
Sealed letter can replace sealing ring online, and the valve rod 5 of upside-down mounting ensures that all fillers are not blown out after removing by valve chamber pressure, lower support shaft
Precompressed disk spring is equipped between 19 and sphere 1, sphere 1 and housing are formed into turning circuit, release electrostatic, 2 top of valve body
Equipped with safe plug screw, safe operation plug screw can exhaust-valve cavity pressure, judge valve seal performance, upstream and downstream are piston knot
Structure valve seat 3, each valve seat 3 of valve can isolate pipeline with valve chamber, that is, realize two way seal, the pressure value of valve both sides is got over
Height, sealing force is bigger, and with reference to safe plug screw, it can be achieved that double dredge function in, the ball valve of direct burial can be by 5 side of extending to of valve rod
The position of convenient to operate, the height of operation lever can be adjusted according to landfill depth, and valve both ends set pipeline to diffuse ball valve 17.
The present invention is designed using advanced spherical valve body and the single weld seam fabricated structure in longitudinal direction, there is provided the enough rigidity of valve
And intensity, the stress for effectively overcoming construction and topography variation to produce；Moulded and changed using PE steel, the PE pipes 16 of standard are directly set
On valve, user is facilitated to construct；Height-adjustable operation extension rod, is suitable for different buried depth operating modes, is that combustion gas is defeated
With a kind of more reliable safety on PE pipelines.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To modify to the technical solution described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic.
Within the spirit and principles of the invention, any modification, equivalent replacement, improvement and so on, should be included in the present invention's
Within protection domain.
Claims (7)
1. a kind of PE ends G type all-welded ball valves, including valve body（2）, it is characterised in that the valve body（2）Both ends be both provided with
Valve body connecting pin（14）, the valve body connecting pin（14）End be connected with PE pipe（16）, the PE pipes（16）It is connected with valve body
End（14）Between be provided with valve body tooth-shape structure（15）, the valve body connecting pin（14）Top is connected with desorption tube（13）, it is described
Desorption tube（13）Top be connected with and diffuse ball valve（17）, the valve body（2）Top center be provided with height adjust extension rod
（18）, the height adjusting extension rod（18）Inside be socketed with valve rod（5）, the valve rod（5）Outside be socketed with valve body axis
Set（6）, the valve rod（5）Apical lateral be provided with valve rod connector sleeve（7）, the valve rod connector sleeve（7）Top be provided with
Baffle ring（8）, the baffle ring（8）On be provided with O-ring（9）, the baffle ring（8）Top be provided with support ring（10）, the branch
Pushing out ring（10）Top turbine is installed（11）, the valve body（2）Inside sphere is installed（1）, the sphere（1）Both ends
It is respectively connected with adapter（4）, the adapter（4）With sphere（1）Between valve seat is installed（3）, the sphere（1）Top center set
It is equipped with anti-static spring（12）.
2. a kind of PE ends G type all-welded ball valves according to claim 1, it is characterised in that the height adjusts extension rod
（18）Both ends on the outside of be provided with exterior seal ring（21）, the exterior seal ring（21）Outside be provided with sealing locking plug screw
（20）.
A kind of 3. PE ends G type all-welded ball valves according to claim 1, it is characterised in that the PE pipes（16）With valve body
Connecting pin（14）Pass through valve body tooth-shape structure（15）Mutually it is engaged.
A kind of 4. PE ends G type all-welded ball valves according to claim 1, it is characterised in that the sphere（1）Connect with valve body
Connect end（4）Pass through valve seat（3）It is connected.
A kind of 5. PE ends G type all-welded ball valves according to claim 1, it is characterised in that the valve body（2）For spherical forging
Steel valve body, the valve body（2）For the single weld seam all-welded structure in longitudinal direction.
A kind of 6. PE ends G type all-welded ball valves according to claim 1, it is characterised in that the valve body connecting pin（14）
With diffusing ball valve（17）Pass through desorption tube（13）It is connected.
A kind of 7. PE ends G type all-welded ball valves according to claim 1, it is characterised in that the sphere（1）Bottom peace
Equipped with lower support shaft（19）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711230579.0A CN108006254A (en) | 2017-11-29 | 2017-11-29 | A kind of PE ends G type all-welded ball valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711230579.0A CN108006254A (en) | 2017-11-29 | 2017-11-29 | A kind of PE ends G type all-welded ball valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108006254A true CN108006254A (en) | 2018-05-08 |
Family
ID=62054803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711230579.0A Pending CN108006254A (en) | 2017-11-29 | 2017-11-29 | A kind of PE ends G type all-welded ball valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108006254A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980396A (en) * | 2018-08-21 | 2018-12-11 | 山东沪工阀门制造股份有限公司 | Combustion gas PE welding ball valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10318699A1 (en) * | 2003-04-24 | 2004-11-25 | Reinert-Ritz Gmbh | Plastic stop valve for fluid pipes comprises a valve body provided with diametrically opposite neck sections installed in bearing sleeves which are insertable through a radial bore in the valve housing |
| CN203248818U (en) * | 2013-04-28 | 2013-10-23 | 福斯流体控制（苏州）有限公司 | Full-bore ball valve |
| CN203703189U (en) * | 2014-02-07 | 2014-07-09 | 成都航利阀门成套设备有限公司 | Novel elastic seal gas gate valve capable of being connected with PE pipe |
| CN104816137A (en) * | 2015-05-26 | 2015-08-05 | 苏州市燃气设备阀门制造有限公司 | Production technology of longitudinal single welding line all-welded ball valve |
| CN204961888U (en) * | 2015-09-13 | 2016-01-13 | 苏州市燃气设备阀门制造有限公司 | Ball valve structure is moulded to steel |
| CN205173547U (en) * | 2015-11-03 | 2016-04-20 | 江苏高中压阀门有限公司 | All -welded ball valve |
| CN206539755U (en) * | 2017-03-13 | 2017-10-03 | 潍坊裕川机械有限公司 | Tooth set type interface valve |
-
2017
- 2017-11-29 CN CN201711230579.0A patent/CN108006254A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10318699A1 (en) * | 2003-04-24 | 2004-11-25 | Reinert-Ritz Gmbh | Plastic stop valve for fluid pipes comprises a valve body provided with diametrically opposite neck sections installed in bearing sleeves which are insertable through a radial bore in the valve housing |
| CN203248818U (en) * | 2013-04-28 | 2013-10-23 | 福斯流体控制（苏州）有限公司 | Full-bore ball valve |
| CN203703189U (en) * | 2014-02-07 | 2014-07-09 | 成都航利阀门成套设备有限公司 | Novel elastic seal gas gate valve capable of being connected with PE pipe |
| CN104816137A (en) * | 2015-05-26 | 2015-08-05 | 苏州市燃气设备阀门制造有限公司 | Production technology of longitudinal single welding line all-welded ball valve |
| CN204961888U (en) * | 2015-09-13 | 2016-01-13 | 苏州市燃气设备阀门制造有限公司 | Ball valve structure is moulded to steel |
| CN205173547U (en) * | 2015-11-03 | 2016-04-20 | 江苏高中压阀门有限公司 | All -welded ball valve |
| CN206539755U (en) * | 2017-03-13 | 2017-10-03 | 潍坊裕川机械有限公司 | Tooth set type interface valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980396A (en) * | 2018-08-21 | 2018-12-11 | 山东沪工阀门制造股份有限公司 | Combustion gas PE welding ball valve |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180508 |