CN106051178A - High-performance butterfly valve capable of ensuring double seal - Google Patents

High-performance butterfly valve capable of ensuring double seal Download PDF

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Publication number
CN106051178A
CN106051178A CN201610517401.3A CN201610517401A CN106051178A CN 106051178 A CN106051178 A CN 106051178A CN 201610517401 A CN201610517401 A CN 201610517401A CN 106051178 A CN106051178 A CN 106051178A
Authority
CN
China
Prior art keywords
valve shaft
butterfly plate
butterfly
sealing ring
pressing plate
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
CN201610517401.3A
Other languages
Chinese (zh)
Inventor
汪小峰
杨凌杰
雷鹏
冯立斌
朱丹晨
吴劲松
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.)
Inovix Fa Ye Co Ltd
Original Assignee
Inovix Fa Ye 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 Inovix Fa Ye Co Ltd filed Critical Inovix Fa Ye Co Ltd
Priority to CN201610517401.3A priority Critical patent/CN106051178A/en
Publication of CN106051178A publication Critical patent/CN106051178A/en
Pending legal-status Critical Current

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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
    • 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
    • F16K1/16Lift 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 pivoted closure-members
    • F16K1/18Lift 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 pivoted closure-members with pivoted discs or flaps
    • F16K1/22Lift 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 pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/224Details of bearings for the axis of rotation
    • 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
    • F16K1/16Lift 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 pivoted closure-members
    • F16K1/18Lift 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 pivoted closure-members with pivoted discs or flaps
    • F16K1/22Lift 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 pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226Shaping or arrangements of the sealing
    • F16K1/2261Shaping or arrangements of the sealing the sealing being arranged on the valve member
    • 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
    • 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
    • F16K1/36Valve members
    • 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

Abstract

The invention discloses a high-performance butterfly valve capable of ensuring double seal. The butterfly valve comprises a valve body, a butterfly plate and a valve shaft; the valve shaft is divided into an upper valve shaft and a lower valve shaft, and the butterfly valve further comprises a composite bearing and an adjusting pressing plate; a first sealing ring is arranged at the positions, close to the sealing face of the valve body, of the two sides of the butterfly plate, an adjusting screw hole is formed in the adjusting pressing plate, an adjusting screw is arranged on the adjusting pressing plate, a second sealing ring is arranged at the position, close to a nut of the adjusting screw, of the adjusting screw hole, and a third sealing ring located between the adjusting pressing plate and the butterfly plate is arranged at the end, close to the adjusting pressing plate and away from the first sealing ring, of the surface of the butterfly plate; and the composite bearing is adopted to support the valve shaft, the butterfly plate and the valve shaft are connected through a flat key for transmission, the transmission torque is large, detaching and overhauling are convenient, the first sealing ring makes contact with the wide valve body sealing face, when the butterfly plate is opened and closed, torque of the valve is effectively reduced, meanwhile the service life of the valve is prolonged, the adjusting pressing plate can achieve reverse seal of the valve, and the phenomenon that when the butterfly plate is closed, seal of the butterfly plate fails under medium pressure is avoided.

Description

Ensure the high-performance butterfly valve of double containment
Technical field
The present invention relates to a kind of butterfly valve, especially ensure the high-performance butterfly valve of double containment.
Background technology
Butterfly valve is as the control element being connected with pipe-line equipment, and in the keying operating process of valve, client wishes Reduce the open and close torque of valve as far as possible.Using taper bolt to be connected transmission at present between butterfly plate and the valve shaft of butterfly valve, taper bolt runs through Valve shaft, need to strengthen valve shaft diameter to increase valve shaft intensity, and production cost so can be caused to improve and the increase of moment of torsion, and circular cone Pin is closely cooperating of taper, and when valve shaft and butterfly plate, to need dismounting to pull down taper bolt when separating the most extremely difficult.Client couple at present Being desirable that it is two way seal in butterfly valve, the butterfly valve of traditional structure can only realize one-way sealing, and one-way sealing to realize two-way close Envelope, can only increase the diameter of valve shaft, strengthen the intensity of butterfly plate.Although and some butterfly valves can realize two way seal, but structure is complicated, Part is more, adds production difficulty and production cost.
Summary of the invention
Present invention aim to address that increasing valve shaft diameter can cause moment of torsion to increase and existing bidirectional sealed butterfly valve structure is multiple The problem that miscellaneous, production cost is high.
The technical solution used in the present invention is: ensure the high-performance butterfly valve of double containment, including valve body, butterfly plate and valve shaft, valve Axle is divided into valve shaft and lower valve shaft, and it also includes composite bearing, regulation pressing plate, and it is close that described composite bearing is respectively arranged at valve body At upper valve shaft and valve body is at lower valve shaft, described upper valve shaft and lower valve shaft are respectively with the composite bearing activity near them even Connecing, described butterfly plate both sides are provided with the first sealing ring at valve body sealing surface, and described regulation pressing plate has two, lays respectively at butterfly Plate both sides, described regulation pressing plate is provided with regulation screw hole, regulation pressing plate is provided through regulation screw hole with butterfly plate even The regulation screw connect, described regulation screw hole is provided with the second sealing ring at the nut of regulation screw, and original state is lowered Joint pressing plate can contact and regulate under original state pressing plate with the first sealing ring and the second sealing ring surface to be had with butterfly plate surface One determining deviation, butterfly plate surface be provided with away from the end of the first sealing ring near regulation pressing plate be positioned at regulation pressing plate and butterfly plate it Between the 3rd sealing ring, the first sealing ring and the 3rd sealing ring have certain elasticity, when regulate pressing plate be under pressure time regulation pressure Plate can contact with butterfly plate surface, stretches out to valve body sealing surface direction elasticity thus tight when regulation pressing plate contacts with butterfly plate surface Coordinate with valve body sealing surface and regulate between pressing plate and butterfly plate by the first sealing ring, the second sealing ring and the 3rd sealing ring close Envelope, butterfly plate central authorities are provided with positioning spigot, are positioned on the butterfly plate at upper valve shaft and lower valve shaft of the positioning spigot both sides and set respectively There are the upper valve shaft of closure and the end cap of lower valve shaft one end, the side of the butterfly plate relative with being provided with end cover side be provided with attachment screw, The radial direction of described upper valve shaft and lower valve shaft offers keyway, and the butterfly plate of the radial direction side being positioned at valve shaft and lower valve shaft is provided with Lock-screw, one end of described lock-screw penetrate butterfly plate be located close at valve shaft or lower valve shaft and connect in its end have flat Key, described flat key is arranged in keyway.
As a further improvement on the present invention, described butterfly plate is provided with trim ring and the first pad, institute at attachment screw Stating the side of the first pad to contact opposite side with butterfly plate and contact with trim ring, described trim ring contacts with the nut of attachment screw, institute State butterfly plate at end cap, be provided with the second pad that two opposite sides contact with end cap and butterfly plate respectively.
The invention has the beneficial effects as follows: using composite bearing to support valve shaft, butterfly plate uses flat key to be connected transmission with valve shaft, passes Torque delivery is big and readily accessible maintenance, and the first sealing ring contacts with wider valve body sealing surface, and butterfly plate can effectively reduce when opening and closing The moment of torsion of valve, extends valve service life simultaneously, and regulation pressing plate is capable of reversely the sealing of valve, when preventing butterfly plate from closing Lost efficacy at pressure medium lower seal.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Fig. 2 is that the present invention the first sealing ring coordinates schematic diagram with wider valve body sealing surface.
Fig. 3 is the schematic diagram being connected transmission between butterfly plate with valve shaft.
Fig. 4 realizes valve for regulation pressing plate and reversely seals schematic diagram.
Shown in figure: 1 composite bearing, valve shaft on 2,3 valve bodies, 4 valve body sealing surfaces, 5 first sealing rings, 6 regulation pressing plates, 7 Butterfly plate, 8 flat keys, 9 lower valve shafts, 10 trim rings, 11 first pads, 12 second pads, 13 end caps, 14 lock-screws, 15 second seal Circle, 16 the 3rd sealing rings, 17 regulation screws.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the present invention is described further.
Embodiment: ensureing the high-performance butterfly valve of double containment, including valve body 3, butterfly plate 7 and valve shaft, valve shaft is divided into valve shaft 2 He Lower valve shaft 9, it also include composite bearing 1, regulation pressing plate 6, described composite bearing be respectively arranged at valve body at upper valve shaft and Valve body is at lower valve shaft, and described upper valve shaft and lower valve shaft are flexibly connected with the composite bearing near them respectively, described butterfly plate Both sides are provided with the first sealing ring 5 at valve body sealing surface, and described regulation pressing plate has two, lays respectively at butterfly plate both sides, institute State and on regulation pressing plate, be provided with regulation screw hole, regulation pressing plate is provided through the regulation spiral shell that regulation screw hole is connected with butterfly plate Nail 17, described regulation screw hole is provided with the second sealing ring 15 at the nut of regulation screw, regulates pressing plate under original state Can contact with the first sealing ring and the second sealing ring surface and regulate under original state pressing plate and butterfly plate surface have certain between The be provided with between regulation pressing plate and butterfly plate away from the end of the first sealing ring near regulation pressing plate away from, butterfly plate surface Three sealing rings 16, the first sealing ring and the 3rd sealing ring have certain elasticity, regulate pressing plate energy when regulating pressing plate and being under pressure Enough contact with butterfly plate surface, stretch out to valve body sealing surface direction elasticity when regulation pressing plate contacts with butterfly plate surface thus close and Valve body sealing surface 4 coordinates and regulates by the first sealing ring, the second sealing ring and the sealing of the 3rd sealing ring between pressing plate and butterfly plate, Butterfly plate central authorities are provided with positioning spigot, are positioned on the butterfly plate at upper valve shaft and lower valve shaft of the positioning spigot both sides and are respectively equipped with envelope Block the end cap 13 of valve shaft and lower valve shaft one end, the side of the butterfly plate relative with being provided with end cover side is provided with attachment screw, institute The radial direction stating valve shaft and lower valve shaft offers keyway, and the butterfly plate of the radial direction side being positioned at valve shaft and lower valve shaft is provided with lock Tight screw 14, one end of described lock-screw penetrate butterfly plate be located close at valve shaft or lower valve shaft and in its end connect have flat Key 8, described flat key is arranged in keyway.Described butterfly plate is provided with trim ring 10 and the first pad 11 at attachment screw, described The side of the first pad contacts opposite side with butterfly plate and contacts with trim ring, and described trim ring contacts with the nut of attachment screw, described Butterfly plate is provided with the second pad 12 that two opposite sides contact with end cap and butterfly plate respectively at end cap.
In the present invention, valve body sealing surface 4 is wider, and there is rounding on valve body sealing surface both sides, the first sealing ring 5 side and valve Body sealing surface 4 coordinates, opposite side is conditioned pressing plate 6 and butterfly plate 7 surrounds, matching part is preferably circular arc, and (such first seals It is easier to coordinate with valve body sealing surface during circle pressurized).Use flat key 8 to be connected between upper valve shaft 2 and butterfly plate 7, transmit moment of torsion greatly, if Put holding screw 14 and make transmission more steadily (being preferably provided two holding screws), and be easy to tearing open between upper valve shaft 2 and butterfly plate 7 Unloading, the connection between lower valve shaft 9 and butterfly plate 7 is also such.In the present invention, at described regulation screw hole near the spiral shell regulating screw Being provided with the second sealing ring 15 at cap, butterfly plate surface is provided with away from the end of the first sealing ring near regulation pressing plate and is positioned at tune The 3rd sealing ring 16(between joint pressing plate and butterfly plate i.e. regulates pressing plate 6 and arranges the 3rd sealing ring at the Internal hole positioning of butterfly plate 7 16), the first sealing ring, the second sealing ring and the 3rd sealing ring preferably both have certain elasticity, the material that such as seals is rubber, Second sealing ring and the 3rd sealing ring are preferably with O-ring seals, and after stress, the first sealing ring, the second sealing ring and the 3rd seal Circle can crimp, due to the first sealing ring 5 be conditioned pressing plate 6 respectively, butterfly plate 7 surrounds, therefore the first sealing ring 5 can only be to valve The extruding of body sealing surface 4 direction and valve seal, the second sealing ring and the 3rd sealing ring prevent valve shaft 2 and butterfly plate 7 after being squeezed Contact surface has medium to enter to produce corrosion, valve shaft and one end of lower valve shaft in end cap seal, prevents medium from entering.
When the present invention uses, butterfly plate 7 in opening-closing process rotational trajectory as shown in phantom in Figure 2, in opening-closing process first Sealing ring 5 is smooth entrance or disengages valve body sealing surface 4, and there is not jam during opening-closing process, the coefficient of sliding friction is relatively Low, can effectively reduce valve opening and closing moment of torsion, simultaneously prolongation sealing ring service life.After butterfly plate is closed, if regulation pressing plate 6 is subject to To pressure, the second sealing ring and the 3rd sealing ring be squeezed after sealing against leakage, act on regulation pressing plate 6 on power pass to First sealing ring 5, the first sealing ring 5 to the extruding of valve body sealing surface 4 direction thus add sealing ring 5 and valve body sealing surface 4 it Between sealed increscence amount, it is ensured that reversely sealing, pressure more high sealing effect is the best.
In addition the present invention can go out to arrange trim ring 10 and the first pad 11 near attachment screw, arranges the at close end cap 13 Two pads 12 so that flat key two ends trim ring 10 combine with the first pad 11 and end cap 13 and the second pad 12 to form combination close Envelope, sealing property are more preferable.
Those skilled in the art are it is to be understood that the protection scheme of the present invention is not limited only to the above embodiments, it is also possible to Various permutation and combination and conversion is carried out, on the premise of spirit of the present invention, to the present invention on the basis of above-described embodiment The various conversion carried out all fall within protection scope of the present invention.

Claims (2)

1. ensureing the high-performance butterfly valve of double containment, including valve body, butterfly plate and valve shaft, valve shaft is divided into valve shaft and lower valve shaft, and it is special Levying and be that it also includes composite bearing, regulation pressing plate, described composite bearing is respectively arranged at valve body at upper valve shaft and valve body At lower valve shaft, described upper valve shaft and lower valve shaft are flexibly connected with the composite bearing near them respectively, described butterfly plate both sides Being provided with the first sealing ring at valve body sealing surface, described regulation pressing plate has two, lays respectively at butterfly plate both sides, described regulation It is provided with regulation screw hole on pressing plate, regulation pressing plate is provided through the regulation screw that regulation screw hole is connected with butterfly plate, institute Stating regulation screw hole and be provided with the second sealing ring at the nut of regulation screw, regulating pressing plate under original state can be with first Sealing ring and the second sealing ring surface contact and regulate under original state pressing plate and have at regular intervals, butterfly plate surface with butterfly plate surface It is provided with the 3rd sealing ring between regulation pressing plate and butterfly plate near regulating the pressing plate end away from the first sealing ring, the One sealing ring and the 3rd sealing ring have certain elasticity, when regulating pressing plate and being under pressure, regulation pressing plate can connect with butterfly plate surface Touch, stretch out to valve body sealing surface direction elasticity when regulation pressing plate contacts with butterfly plate surface thus coordinate with valve body sealing surface closely And sealed by the first sealing ring, the second sealing ring and the 3rd sealing ring between regulation pressing plate and butterfly plate, butterfly plate central authorities are provided with Positioning spigot, is positioned on the butterfly plate at upper valve shaft and lower valve shaft of the positioning spigot both sides and is respectively equipped with the upper valve shaft of closure and lower valve The end cap of axle one end, is provided with attachment screw, described upper valve shaft and lower valve shaft in the side of the butterfly plate relative with being provided with end cover side Radial direction offer keyway, the butterfly plate of the radial direction side being positioned at valve shaft and lower valve shaft is provided with lock-screw, described locking One end of screw penetrates butterfly plate and is located close at valve shaft or lower valve shaft and in its end connect have flat key, described flat key to be arranged on In keyway.
The high-performance butterfly valve of guarantee double containment the most according to claim 1, it is characterised in that described butterfly plate is near connecting spiral shell Being provided with trim ring and the first pad at nail, the side of described first pad contacts opposite side with butterfly plate and contacts with trim ring, described Trim ring contacts with the nut of attachment screw, and described butterfly plate is provided with two opposite sides at end cap and contacts with end cap and butterfly plate respectively The second pad.
CN201610517401.3A 2016-07-05 2016-07-05 High-performance butterfly valve capable of ensuring double seal Pending CN106051178A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610517401.3A CN106051178A (en) 2016-07-05 2016-07-05 High-performance butterfly valve capable of ensuring double seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610517401.3A CN106051178A (en) 2016-07-05 2016-07-05 High-performance butterfly valve capable of ensuring double seal

Publications (1)

Publication Number Publication Date
CN106051178A true CN106051178A (en) 2016-10-26

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CN201610517401.3A Pending CN106051178A (en) 2016-07-05 2016-07-05 High-performance butterfly valve capable of ensuring double seal

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106949249A (en) * 2017-04-13 2017-07-14 航天长征化学工程股份有限公司 Three-eccentric butterfly valve sealing ring and three-eccentric butterfly valve
CN107355547A (en) * 2017-08-08 2017-11-17 英诺威阀业有限公司 It is a kind of from pressurising bidirectional sealed butterfly valve
CN110388472A (en) * 2019-07-08 2019-10-29 英诺威阀业有限公司 Flexible butterfly valve

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201314383Y (en) * 2008-11-18 2009-09-23 张维春 High temperature and corrosion resistant butterfly valve
CN102853093A (en) * 2011-06-30 2013-01-02 江苏神通阀门股份有限公司 Double-acting type isolating valve
US20130056667A1 (en) * 2011-09-01 2013-03-07 Jianchao Shu Triple Offset Butterfly Valve and Rotary Valves For Sever Services
CN104653791A (en) * 2015-02-10 2015-05-27 无锡智能自控工程股份有限公司 Splitting type valve seat self-adjustable sealing three-eccentric butterfly valve
CN205780930U (en) * 2016-07-05 2016-12-07 英诺威阀业有限公司 Ensure the high-performance butterfly valve of double containment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201314383Y (en) * 2008-11-18 2009-09-23 张维春 High temperature and corrosion resistant butterfly valve
CN102853093A (en) * 2011-06-30 2013-01-02 江苏神通阀门股份有限公司 Double-acting type isolating valve
US20130056667A1 (en) * 2011-09-01 2013-03-07 Jianchao Shu Triple Offset Butterfly Valve and Rotary Valves For Sever Services
CN104653791A (en) * 2015-02-10 2015-05-27 无锡智能自控工程股份有限公司 Splitting type valve seat self-adjustable sealing three-eccentric butterfly valve
CN205780930U (en) * 2016-07-05 2016-12-07 英诺威阀业有限公司 Ensure the high-performance butterfly valve of double containment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106949249A (en) * 2017-04-13 2017-07-14 航天长征化学工程股份有限公司 Three-eccentric butterfly valve sealing ring and three-eccentric butterfly valve
CN107355547A (en) * 2017-08-08 2017-11-17 英诺威阀业有限公司 It is a kind of from pressurising bidirectional sealed butterfly valve
CN110388472A (en) * 2019-07-08 2019-10-29 英诺威阀业有限公司 Flexible butterfly valve

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Application publication date: 20161026