CN104154267A - Double-seal sampling three-way valve - Google Patents

Double-seal sampling three-way valve Download PDF

Info

Publication number
CN104154267A
CN104154267A CN201410392229.4A CN201410392229A CN104154267A CN 104154267 A CN104154267 A CN 104154267A CN 201410392229 A CN201410392229 A CN 201410392229A CN 104154267 A CN104154267 A CN 104154267A
Authority
CN
China
Prior art keywords
valve
fluid passage
axis
flap
connection end
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
Application number
CN201410392229.4A
Other languages
Chinese (zh)
Inventor
梁世添
沈卫强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG BIAOSHENG VALVE MANUFACTURING Co Ltd
Original Assignee
ZHEJIANG BIAOSHENG VALVE MANUFACTURING Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZHEJIANG BIAOSHENG VALVE MANUFACTURING Co Ltd filed Critical ZHEJIANG BIAOSHENG VALVE MANUFACTURING Co Ltd
Priority to CN201410392229.4A priority Critical patent/CN104154267A/en
Publication of CN104154267A publication Critical patent/CN104154267A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/044Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift 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
    • F16K1/32Details
    • F16K1/34Cutting-off parts, e.g. valve members, seats
    • F16K1/46Attachment of sealing rings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift 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
    • F16K1/32Details
    • F16K1/48Attaching valve members to screw-spindles
    • F16K1/487Attaching valve members to screw-spindles by a fixing element extending in the axial direction of the spindle, e.g. a screw
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/02Construction of housing; Use of materials therefor of lift valves
    • F16K27/0263Construction of housing; Use of materials therefor of lift valves multiple way valves

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valve Housings (AREA)

Abstract

The invention discloses a double-seal sampling three-way valve which comprises a valve body, a valve clack, a valve rod and a hand wheel. Three connection end heads are arranged on the valve body, the three connection end heads on the valve body are an upper connection end head, a left connection end head and a right connection end head respectively, a valve cover is connected to the upper connection end head of the valve body, a first fluid channel is formed in the valve cover, the axis where the first fluid channel is located coincides with the axis of the upper connection end head, the left connection end head and the right connection end head correspond to a second fluid channel and a third fluid channel respectively, the axis where the first fluid channel is located is perpendicular to the axis where the second fluid channel is located, the included angle between the axis where the second fluid channel is located and the axis where the third fluid channel is located is larger than 90 degrees and smaller than 180 degrees, and the upper end face and the lower end face of the valve clack are provided with a first seal ring and a second seal ring respectively. By means of the double-seal sampling three-way valve, a connector of a pipeline of the sampling valve is omitted, media are prevented from staying in a cavity of the valve, service life is prolonged, sealing performance is improved, and sampling is facilitated.

Description

A kind of double-sealing sampling T-way valve
Technical field
This practicality invention relates to valve technology field, relates in particular to a kind of double-sealing sampling T-way valve.
Background technique
Valve is widely used in industry and daily life, and it is mainly used in making liquid medium in pipe-line system to flow or stops, and can control the device of its flow.Current tee ball valve is divided into T-shaped tee ball valve and L-type tee ball valve according to the connecting pipeline structure difference of spool.And mainly there is following defect in existing tee ball valve: the first, tee ball valve is longer for the pipe coupling sampling, and required cost is larger, secondly medium is easy to accumulate in valve inner chamber of living in, waste resource on the one hand, be easy on the other hand corrode valve, shortened working life; The second, traditional valve is all elbow bend, is unfavorable for that, in complicated pipe-line system, pipeline space used is larger; The 3rd, traditional tee ball valve belongs to precompression automatic sealing valve, operate under the extremely strong medium of permeability particularly at valve multiple switching, cannot ensure the sealability of valve, tee ball valve often adheres to just needing to change less than two weeks, and the operation of maintain and replace Sealing is also more loaded down with trivial details, the cost of cost is larger; The 4th, traditional tee ball valve can only be realized the flow direction switching of valve body inner fluid, and cannot realize the function that three fluid passages cut off simultaneously, has the workplace of particular/special requirement and cannot meet some.
Summary of the invention
In order to overcome the defect of prior art, the invention provides a kind of sampling cock pipe joint and pipeline space saved, improve working life, the better double-sealing sampling T-way of sealability valve.
To achieve these goals, the technical solution used in the present invention is:
A kind of double-sealing sampling T-way valve, comprise valve body, valve body is provided with three connection ends, valve inner is provided with inner chamber, flap is installed in inner chamber, flap is connected with valve rod, valve stem end is provided with handwheel, three connection ends on valve body are respectively connection end, left connection end and right connection end, on the upper joint head of valve body, be connected with valve gap, between valve body and valve gap, be lined with pad, valve gap is provided with first fluid passage, first fluid passage place axis and upper connection end axis coincide, valve gap is by fixed block and valve body fixing and locking, a left side connects termination and right connection end respectively to having second fluid passage and the 3rd fluid passage, the axis at first fluid passage place is perpendicular to second fluid passage place axis, the angle that the axis at second fluid passage place becomes with the axis at the 3rd place, fluid passage is greater than 90 degree and is less than 180 degree, medium can be by flowing out from gravity and internal pressure naturally, ensure that medium can not accumulate in valve any inner chamber of living in, after flap is closed, outlet also can be quite clean, need not manually go again to clean, be conducive to the working life of extension device, flap upper-end surface is provided with the first seal ring, the first seal ring upper press cover has flap pressing plate, the first seal ring is fixed on flap by the first nut, flap lower end surface is provided with the second seal ring, can ensure the sealing of first fluid passway and the 3rd fluid passage mouth by flap, the axis of first fluid passage place axis and valve rod is on same straight line, the axis angle at the axis of valve rod and the 3rd place, fluid passage is less than 90 degree, it is consistent with the passage internal diameter that the 3rd fluid passage approaches inner chamber that first fluid passage approaches the passage of inner chamber, the passage bore that first fluid passage approaches inner chamber is greater than flap pressing plate external diameter and is less than the external diameter of the first seal ring, and the 3rd fluid passage approaches the external diameter that the passage bore of inner chamber is greater than flap nut external diameter and is less than the second seal ring.
Described fixed block is double-screw bolt and the 3rd nut, is convenient to valve gap and valve body to install more tight.
Described flap is fixedly connected with flap nut by the first Cock screw with valve rod, and the first Cock screw has ensured valve rod fixed position relative to flap nut, and flap nut has been fixed the relative position of flap and valve rod, and clamps the second seal ring.
The valve rod of described valve inner is provided with filler, is stamped Gland on filler, and Gland is fixedly connected with valve body by screw, and the middle part of valve rod is provided with Stem Mut, and Stem Mut is relative fixing by the second Cock screw with valve body.
Described valve rod and handwheel, by packing ring and the second nut fixing and locking, ensure valve rod and handwheel difficult drop-off, are convenient to by handwheel, valve body be controlled.
Beneficial effect of the present invention: this technology compared with prior art, the first fluid passage that valve is provided with, second fluid passage and the 3rd fluid passage, the axis at first fluid passage place is perpendicular to second fluid passage place axis, the angle that the axis at second fluid passage place becomes with the axis at the 3rd place, fluid passage is greater than 90 degree and is less than 180 degree, not only save the joint of sampling cock pipeline, be used in the design of mo(u)ld bottom half ell road, medium is by naturally flowing out from gravity and internal pressure, ensure that medium can not accumulate in valve any inner chamber of living in, be that after valve closing, outlet also can be quite clean, need not manually go again to clean, be conducive to the working life of extension device, valve is manual external force forced seal type valve, can be sealed by handwheel, even if valve sealing face has the part wearing and tearing also can be by addition forced seal of external force, and it is more convenient to operate easy that this maintenance of valve is changed Sealing, this life of valve more than 2 years, thereby reduced replacing valve and user cost, first fluid channel entrance material can be closed by the flap in body cavity, conveniently, from the sampling of second fluid passage, not be subject to the impact of first fluid channel entrance material, sampling is convenient, this valve has replaced elbow bend, and has saved pipeline space, makes in complicated pipe-line system use advantage also clearly.
Brief description of the drawings
Fig. 1 is closed condition schematic diagram of the present invention;
Fig. 2 is closed condition schematic diagram of the present invention;
Fig. 3 is flap schematic diagram of the present invention.
Label in figure is: 1, and valve gap; 2, double-screw bolt; 3, the three nuts; 4, pad; 5, valve body; 6, valve rod; 7, filler; 8, Gland; 9, screw; 10, Stem Mut; 11, the second Cock screws; 12, handwheel; 13, packing ring; 14, the second nuts; 15, the first nuts; 16, flap pressing plate; 17, the first seal rings; 18, flap; 19, the second seal rings; 20, flap nut; 21, the first Cock screws; 22, upper connection end; 23, left connection end; 24, right connection end; 25, first fluid passage; 26, second fluid passage; 27, the three fluid passages.
Embodiment
As Fig. 1, Fig. 2, shown in Fig. 3, a kind of double-sealing sampling T-way valve, comprise valve body 5, valve body 5 is provided with three connection ends, valve body 5 inside are provided with inner chamber, flap 18 is installed in inner chamber, flap 18 is connected with valve rod 6, valve rod 6 ends are provided with handwheel 12, three connection ends on valve body 5 are respectively connection end 22, left connection end 23 and right connection end 24, on the upper joint head 22 of valve body 5, be connected with valve gap 1, between valve body 5 and valve gap, be lined with pad 4, valve gap 1 is provided with first fluid passage 25, first fluid passage 25 place axis and upper connection end 22 axis coincide, valve gap 1 is by fixed block and valve body 5 fixing and lockings, a left side connects termination 23 and right connection end 24 respectively to having second fluid passage 26 and the 3rd fluid passage 27, the axis at first fluid passage 25 places is perpendicular to second fluid passage 26 place axis, the angle that the axis at second fluid passage 26 places becomes with the axis at 27 places, the 3rd fluid passage is greater than 90 degree and is less than 180 degree, medium can be by flowing out from gravity and internal pressure naturally, ensure that medium can not accumulate in valve any inner chamber of living in, after flap 18 is closed, outlet also can be quite clean, need not manually go again to clean, be conducive to the working life of extension device, flap 18 upper-end surfaces are provided with the first seal ring 17, the first seal ring 17 upper press covers have flap pressing plate 16, the first seal ring 17 is fixed on flap 18 by the first nut 15, flap 18 lower end surfaces are provided with the second seal ring 19, can ensure the sealing of 27 mouthfuls of 25 mouthfuls, first fluid passage and the 3rd fluid passages by flap 18, the axis of first fluid passage 25 place axis and valve rod 6 is on same straight line, the axis angle at the axis of valve rod 6 and 27 places, the 3rd fluid passage is less than 90 degree, it is consistent with the passage internal diameter that the 3rd fluid passage 27 approaches inner chamber that first fluid passage 25 approaches the passage of inner chamber, the passage bore that first fluid passage 25 approaches inner chamber is greater than flap pressing plate 16 external diameters and is less than the external diameter of the first seal ring 17, and the 3rd fluid passage 27 approaches the external diameter that the passage bore of inner chamber is greater than flap nut 20 external diameters and is less than the second seal ring 19, described fixed block is double-screw bolt 2 and the 3rd nut 3, be convenient to valve gap 1 and valve body 5 to install more tight, described flap 18 is fixedly connected with flap nut 20 by the first Cock screw 21 with valve rod 6, the first Cock screw 21 has ensured valve rod 6 fixed position relative to flap nut 20, flap nut 20 has been fixed the relative position of flap 18 with valve rod 6, and clamp the second seal ring 19, the valve rod 6 of described valve body 5 inside is provided with filler 7, on filler 7, be stamped Gland 8, Gland 8 is fixedly connected with valve body 5 by screw 9, the middle part of valve rod 6 is provided with Stem Mut 10, Stem Mut 10 is relative fixing by the second Cock screw 11 with valve body 5, described valve rod 6 passes through packing ring 13 and the second nut 14 fixing and lockings with handwheel 12, ensure valve rod 6 and handwheel 12 difficult drop-offs, be convenient to by handwheel 12, valve body 5 be controlled.
Working principle: in the time of sampling, operation handwheel 12 clockwise, handwheel 12 is with ovable valve stem 6, valve rod 6 rotates under the effect of Stem Mut 10, valve rod 6 drives flap 18 to rise under the restriction of flap nut 20 and the first Cock screw 21, on flap 18, rise in the lump under flap pressing plate 16 and the first nut 15 fixing with the first seal ring 17, until 22 mouthfuls of upper connection ends are sealed by flap 18, medium flows to the outlet of the 3rd fluid passage 27 by the second fluid passage 26 of valve body 5.Sampling finishes, and operates counterclockwise handwheel 12, just in time contrary when the action of follow-up valve and sampling, and flap 18 is decline state until the mouth of valve closing the 3rd fluid passage 27 is sealed.
Beneficial effect of the present invention: this technology compared with prior art, the first fluid passage that valve is provided with, second fluid passage and the 3rd fluid passage, the axis at first fluid passage place is perpendicular to second fluid passage place axis, the angle that the axis at second fluid passage place becomes with the axis at the 3rd place, fluid passage is greater than 90 degree and is less than 180 degree, not only save the joint of sampling cock pipeline, be used in the design of mo(u)ld bottom half ell road, medium is by naturally flowing out from gravity and internal pressure, ensure that medium can not accumulate in valve any inner chamber of living in, be that after valve closing, outlet also can be quite clean, need not manually go again to clean, be conducive to the working life of extension device, valve is manual external force forced seal type valve, can be sealed by handwheel, even if valve sealing face has the part wearing and tearing also can be by addition forced seal of external force, and it is more convenient to operate easy that this maintenance of valve is changed Sealing, this life of valve more than 2 years, thereby reduced replacing valve and user cost, first fluid channel entrance material can be closed by the flap in body cavity, conveniently, from the sampling of second fluid passage, not be subject to the impact of first fluid channel entrance material, sampling is convenient, this valve has replaced elbow bend, and has saved pipeline space, makes in complicated pipe-line system use advantage also clearly.

Claims (5)

1. a double-sealing sampling T-way valve, comprise valve body, valve body is provided with three connection ends, valve inner is provided with inner chamber, flap is installed in inner chamber, flap is connected with valve rod, valve stem end is provided with handwheel, it is characterized in that: three connection ends on valve body are respectively connection end, left connection end and right connection end, on the upper connection end of valve body, be connected with valve gap, valve gap is provided with first fluid passage, first fluid passage place axis and upper connection end axis coincide, valve gap is by fixed block and valve body fixing and locking, left connection end and right connection end are respectively to having second fluid passage and the 3rd fluid passage, the axis at first fluid passage place is perpendicular to second fluid passage place axis, the angle that the axis at second fluid passage place becomes with the axis at the 3rd place, fluid passage is greater than 90 degree and is less than 180 degree, flap upper-end surface is provided with the first seal ring, the first seal ring upper press cover has flap pressing plate, the first seal ring is fixed on flap by the first nut, flap lower end surface is provided with the second seal ring, the axis of first fluid passage place axis and valve rod is on same straight line, the axis angle at the axis of valve rod and the 3rd place, fluid passage is less than 90 degree, it is consistent with the passage internal diameter that the 3rd fluid passage approaches inner chamber that first fluid passage approaches the passage of inner chamber, the passage bore that first fluid passage approaches inner chamber is greater than flap pressing plate external diameter and is less than the external diameter of the first seal ring, and the 3rd fluid passage approaches the external diameter that the passage bore of inner chamber is greater than flap nut external diameter and is less than the second seal ring.
2. double-sealing sampling T-way valve as claimed in claim 1, is characterized in that: described fixed block is double-screw bolt and the 3rd nut.
3. double-sealing sampling T-way valve as claimed in claim 1, is characterized in that: described flap is fixedly connected with flap nut by the first Cock screw with valve rod.
4. double-sealing sampling T-way valve as claimed in claim 1, it is characterized in that: the valve rod of described valve inner is provided with filler, on filler, be stamped Gland, Gland is fixedly connected with valve body by screw, the middle part of valve rod is provided with Stem Mut, and Stem Mut is relative fixing by the second Cock screw with valve body.
5. double-sealing sampling T-way valve as claimed in claim 1, is characterized in that: described valve rod and handwheel are by packing ring and the second nut fixing and locking.
CN201410392229.4A 2014-08-07 2014-08-07 Double-seal sampling three-way valve Pending CN104154267A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410392229.4A CN104154267A (en) 2014-08-07 2014-08-07 Double-seal sampling three-way valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410392229.4A CN104154267A (en) 2014-08-07 2014-08-07 Double-seal sampling three-way valve

Publications (1)

Publication Number Publication Date
CN104154267A true CN104154267A (en) 2014-11-19

Family

ID=51879843

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410392229.4A Pending CN104154267A (en) 2014-08-07 2014-08-07 Double-seal sampling three-way valve

Country Status (1)

Country Link
CN (1) CN104154267A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114431712A (en) * 2020-11-06 2022-05-06 百睿达科技有限公司 Dual mode fluid connector switchable between different modes of operation
CN114431712B (en) * 2020-11-06 2024-05-31 百睿达科技有限公司 Dual mode fluid coupling capable of switching between different modes of operation

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111960A (en) * 1960-11-01 1963-11-26 Ranco Inc Three way valve
CN2555443Y (en) * 2002-07-10 2003-06-11 刘拥军 Three-way revers valve for accumulation burning nozzle
CN201068989Y (en) * 2007-07-27 2008-06-04 张跃 Two-way, three-way interchangeable electric valve
CN101354087A (en) * 2008-09-02 2009-01-28 杭州耐特阀门有限公司 Triplet commutation slurry valve
CN201363456Y (en) * 2009-01-21 2009-12-16 河南开封高压阀门有限公司 T-shaped tee valve for inlet of high pressure heater
CN202152864U (en) * 2011-07-15 2012-02-29 大连天禄机电设备制造有限公司 Novel wax injection valve of continuous paraffin wax former
CN202349265U (en) * 2011-09-28 2012-07-25 郑生机 Pneumatic three-way valve
CN203477447U (en) * 2013-09-25 2014-03-12 正茂阀门有限公司 Three-way reversing slurry valve

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111960A (en) * 1960-11-01 1963-11-26 Ranco Inc Three way valve
CN2555443Y (en) * 2002-07-10 2003-06-11 刘拥军 Three-way revers valve for accumulation burning nozzle
CN201068989Y (en) * 2007-07-27 2008-06-04 张跃 Two-way, three-way interchangeable electric valve
CN101354087A (en) * 2008-09-02 2009-01-28 杭州耐特阀门有限公司 Triplet commutation slurry valve
CN201363456Y (en) * 2009-01-21 2009-12-16 河南开封高压阀门有限公司 T-shaped tee valve for inlet of high pressure heater
CN202152864U (en) * 2011-07-15 2012-02-29 大连天禄机电设备制造有限公司 Novel wax injection valve of continuous paraffin wax former
CN202349265U (en) * 2011-09-28 2012-07-25 郑生机 Pneumatic three-way valve
CN203477447U (en) * 2013-09-25 2014-03-12 正茂阀门有限公司 Three-way reversing slurry valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114431712A (en) * 2020-11-06 2022-05-06 百睿达科技有限公司 Dual mode fluid connector switchable between different modes of operation
CN114431712B (en) * 2020-11-06 2024-05-31 百睿达科技有限公司 Dual mode fluid coupling capable of switching between different modes of operation

Similar Documents

Publication Publication Date Title
CN203906813U (en) Pneumatic and manual normally-open emergency cut-off valve
CN105508720A (en) Corrugated pipe stop valve for photo-thermal electricity generation fused salt
CN208871042U (en) A kind of needle-like shut-off valve
CN201606504U (en) Hard sealing angle valve
CN204004559U (en) A kind of sampling T-way valve
CN204647338U (en) Nuclear island Y shape adds pipe arrangement High Temperature High Pressure pressure-relief type Double-clack stop valve
CN201487239U (en) right-angle valve
CN202531948U (en) Novel flange gate valve
CN104154267A (en) Double-seal sampling three-way valve
CN204985994U (en) Novel ball valve
CN203067918U (en) Gate valve with elastic sealing block
CN109357035B (en) Axial sealing ball valve of valve rod
CN203500548U (en) Gas source ball valve
CN202674359U (en) Lifting stopcock
CN207921344U (en) A kind of membrane separation plant plunger valve
CN205155278U (en) Balanced high accuracy governing valve of bellows sealing cage
CN204828681U (en) Cooling right -angle type stop valve of industry
CN204099659U (en) Duplex three-way valve
CN203656213U (en) Angle type globe valve
CN203051782U (en) Leakproof chlorine gas cut-off valve
CN207599009U (en) A kind of clamping hoop type fast-assembling health pneumatic ball valve
CN219888786U (en) Axial sealing floating ball valve
CN203099025U (en) Pressing cover
CN203797129U (en) Bidirectional bearing flexible seal gate valve
CN205605871U (en) Two way seal hemisphere valve

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into 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: 20141119