CN204784765U - Three eccentric low temperature butterfly valves - Google Patents
Three eccentric low temperature butterfly valves Download PDFInfo
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- CN204784765U CN204784765U CN201520495108.2U CN201520495108U CN204784765U CN 204784765 U CN204784765 U CN 204784765U CN 201520495108 U CN201520495108 U CN 201520495108U CN 204784765 U CN204784765 U CN 204784765U
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- valve
- valve rod
- low temperature
- valve body
- butterfly plate
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Abstract
The utility model discloses a three eccentric low temperature butterfly valves, including valve body, valve rod, disk seat and butterfly plate, the valve rod is rotationally worn to locate in the valve body, the shape of cross section of disk seat is the U type, and the one end of disk seat sets up on the inner edge face of valve body, and the internal face that the disk seat can produce elastic deformation and disk seat forms an annular arc surface, the butterfly plate is fixed in on the valve rod and lie in in the cavity of valve body, be close to in the butterfly plate the surface of a tip of disk seat is formed with a conical surface, the conical surface with annular arc surface sealing connection and to form a sealing connection vice, just the butterfly plate will two closed chamber of formation mutually independent are kept apart to the cavity, work as when the butterfly plate is opened, two closed chamber is linked together. The utility model provides the high life of packing layer, and reduced and opened moment, the spillage reduced, simultaneously, compressing deformation volume that can the disk seat realizes sealed effect, has solved that to need to lean on the pipeline packing force to realize sealed.
Description
Technical field
The utility model relates to a kind of three eccentricity low temperature butterfly valve.
Background technique
Three eccentricity low temperature butterfly valve can be applicable to the industries such as oil, chemical industry, electric power.But, in prior art, there is following technical problem in traditional three eccentricity low temperature butterfly valve: the setting position of (1) packing layer is shorter with the distance between the medium in the chamber of valve body, filler can be made under cryogenic media environment to lose sealability thus cause medium to leak outside, produce the moment of torsion that crystallization adds valve simultaneously, valve rod also can be made by crystallization to be scratched the appearance causing leaking larger and potential safety hazard; (2) valve seat is by valve body location, and be difficult to after the sealing face damage of valve seat compensate, meanwhile, the excellent sealing of valve seat and butterfly plate needs the impacting force in tube road to realize.
Model utility content
The defects such as the technical problems to be solved in the utility model is that traditional three eccentricity low temperature butterfly valve of the prior art difficulty is opened in order to overcome, produce gross leak after excessive, the sealing surface wear of moment of torsion, working life is short, provide a kind of three eccentricity low temperature butterfly valve.
The utility model solves above-mentioned technical problem by following technical proposals:
A kind of three eccentricity low temperature butterfly valve, comprise valve body, valve rod, valve seat and butterfly plate, its feature is, described valve rod is arranged in described valve body rotationally;
The shape of cross section of described valve seat is U-shaped, and one end of described valve seat is arranged on the inner edge surface of described valve body, and described valve seat can produce resiliently deformable and the internal face of described valve seat forms an annular arc surface;
Described butterfly plate to be fixed on described valve rod and to be positioned at the cavity of described valve body, the outer surface of the end near described valve seat in described butterfly plate is formed with a conical surface, the described conical surface and described annular arc surface are tightly connected and form a seal connecting pair, and described cavity isolation is formed separate Liang Ge airtight chamber by described butterfly plate, when described butterfly plate is opened, two described airtight chamber are connected.
In this programme, adopt a U-shaped that the valve seat of resiliently deformable also can occur, the compress variation making it possible to valve seat, to realize sealing effect, solves and needs tube road impacting force to realize the problem sealed; Meanwhile, valve seat is directly positioned on the reserved valve seat mounting plane of valve body, is accurately located valve seat by butterfly plate, has effectively carried out auto-compensation to the wearing and tearing of sealing surface, thus ensure that the self compensation between valve seat and butterfly plate and better sealability.
In addition, adopt the valve seat of said structure form, make to there is assemblage gap between valve seat and valve body, thus valve seat can be floated, when butterfly plate is closed, assemblage gap can provide enough distortion and fault tolerant workspace, makes valve leakage automatic inspection to ensure zero leakage, switching torque is little, safe and reliable.
Preferably, on described annular arc surface and the described conical surface, plating is provided with one deck hard chromium layers respectively.
In this programme, the sealing surface hard chromium plating of valve seat and butterfly plate, increases greatly for the dust of severe service, the abrasion resistance properties of particle.
Preferably, described three eccentricity low temperature butterfly valve also comprises a disc holder, and one end of described disc holder is detachable is connected to described valve body, and the other end is resisted against the other end of described valve seat, and is provided with a gasket seal between described disc holder and described valve body.
In this programme, the setting of disc holder can further by seat compression on valve body, gasket seal is for preventing the medium side leakage in the airtight chamber of valve body simultaneously.
Preferably, the end be connected with described valve body in described valve seat is symmetrical arranged with the other end be connected with described disc holder in described valve seat.
In this programme, the valve seat of bi-directional symmetrical has two-way commutativity, considerably increases the working life of this three eccentricity low temperature butterfly valve.
Preferably, the center region of the end face away from described valve seat in described butterfly plate offers a groove, and the side of described groove is arc surface;
Described valve rod comprises upper valve rod and lower valve rod, described upper valve rod is arranged in the top of described valve body rotationally and the top of described butterfly plate is fixed in the bottom of described upper valve rod, and described lower valve rod is arranged in the bottom of described valve body rotationally and the bottom of described butterfly plate is fixed at the top of described upper valve rod.
In this programme, butterfly plate offers the groove of said structure form, make the position of groove not easily produce eddy current, and add the free air space of medium, on to greatest extent, increase the negotiability of this three eccentricity low temperature butterfly valve.
Preferably, described butterfly plate is three eccentricity butterfly plate.
In this programme, butterfly plate is three eccentricity structure, makes butterfly plate open moment and valve seat zero friction, thus reduces the unlatching moment of torsion of valve.
Preferably, described three eccentricity low temperature butterfly valve also comprises stuffing box device, and described stuffing box device comprises:
Extension pipe, is sheathed on the outer surface of described upper valve rod, the detachable top being connected to described valve body, the bottom of described extension pipe;
Packing layer, is installed with between internal face in the top of described extension pipe and the outer surface of described upper valve rod;
Hold-down grid, be sheathed on the outer surface of described upper valve rod and the detachable top being connected to described extension pipe, and the bottom of described hold-down grid is installed with the top in described packing layer.
In this programme, the upper valve rod lengthened and extension pipe add the time that packing layer contacts with the air of external environment, ensure that the position residing for packing layer is under normal temperature environment, thus improve the working life of packing layer, and hold-down grid is for compressing packing layer.
Preferably, be installed with accumulation of energy circle and upper stopping shim between the internal face at the top of described extension pipe and the outer surface of described upper valve rod, and described upper accumulation of energy circle and upper stopping shim are installed with between described extension pipe and the bottom of described packing layer along the axial direction of described upper valve rod successively;
Lower accumulation of energy circle and lower stopping shim has been installed with between the internal face of the bottom of described extension pipe and the outer surface of described upper valve rod, and described lower accumulation of energy circle and lower stopping shim are installed with between described extension pipe and the top of described valve body along the axial direction of described upper valve rod successively, are also provided with Composition spacer between the bottom of described extension pipe and the top of described valve body.
In this programme, upper accumulation of energy circle and lower accumulation of energy circle reduce the possibility that cryogenic media leaks from upper valve rod; Meanwhile, upper accumulation of energy circle and lower accumulation of energy circle respectively top stopping shim and lower stopping shim can play good sealability after fixing, thus prevent cryogenic media from leaking outside from valve rod.
Preferably, the top of described hold-down grid is provided with a clamping annulus, and described clamping annulus is sheathed on the outer surface of described upper valve rod.
In this programme, the potential safety hazard that clamping annulus may blow out for eliminating upper valve rod, thus add the Safety performance of this three eccentricity low temperature butterfly valve.
Preferably, the length of described extension pipe is 340mm.
In this programme, adopt said structure form, the time that packing layer and external environment can be provided fully to contact, avoid low temperature to end the temperature affecting packing layer.On the basis meeting related domain general knowledge, above-mentioned each optimum condition, can combination in any, obtains each preferred embodiments of the utility model.
Positive progressive effect of the present utility model is:
(1) upper valve rod lengthened and extension pipe add the time that packing layer contacts with the air of external environment, ensure that the position residing for packing layer is under normal temperature environment, thus improve the working life of packing layer, and reduce unlatching moment, reduce leakage rate;
(2) adopt a U-shaped that the valve seat of resiliently deformable also can occur, the compress variation making it possible to valve seat, to realize sealing effect, solves and needs tube road impacting force to realize the problem sealed; , by butterfly plate, valve seat is accurately located meanwhile, effectively auto-compensation has been carried out to the wearing and tearing of sealing surface, thus ensure that the self compensation between valve seat and butterfly plate and better sealability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the three eccentricity low temperature butterfly valve of the utility model preferred embodiment.
Fig. 2 is the sectional structure schematic diagram along A-A in Fig. 1.
Fig. 3 is the structure for amplifying schematic diagram of part B in Fig. 2.
Fig. 4 is the structure for amplifying schematic diagram of C part in Fig. 2.
Fig. 5 is the structure for amplifying schematic diagram of D part in Fig. 2.
Fig. 6 is the structure for amplifying schematic diagram of E part in Fig. 2.
Fig. 7 is the structure for amplifying schematic diagram of F part in Fig. 2.
Description of reference numerals:
Valve body: 1 airtight chamber: 11
Valve rod: 2 upper valve rods: 21 pin-and-holes: 211
Lower valve rod: 22 gland pads: 221 glands: 222
First bolt: 223
Valve seat: 3 annular arc surfaces: 31 assemblage gaps: 32
Butterfly plate: 4 grooves: 41 arc surfaces: 42
The conical surface: 43
Disc holder: 5 second bolts: 51 gasket seals: 52
Stuffing box device: 6
Extension pipe: 61 the 3rd bolts: 611 pads: 612
Packing layer: 62
Hold-down grid: 63 the 4th bolts: 631
Upper accumulation of energy circle: stopping shim on 64: 65 clamping annulus: 66
Lower accumulation of energy circle: 67 times stopping shims: 68 Composition spacers: 69
Embodiment
Lift preferred embodiment below, and come by reference to the accompanying drawings clearlyer intactly the utility model to be described.
In description of the present utility model, it will be appreciated that, term " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
Fig. 1-2 shows a kind of three eccentricity low temperature butterfly valve, and described three eccentricity low temperature butterfly valve comprises valve body 1, valve rod 2, valve seat 3 and butterfly plate 4.Wherein, butterfly plate 4 is three eccentricity butterfly plate, makes butterfly plate 4 open moment and valve seat 3 zero friction like this, thus reduces the unlatching moment of torsion of valve.In the present embodiment, the axially bias of the center line of valve rod 2 and the center line of butterfly plate 4; The radial disbalance of the center line of valve rod 2 and the center line of butterfly plate 4; Butterfly plate cone angle center line is eccentric with axial angle.
As shown in Figure 3, offer a groove 41 in described butterfly plate 4 away from the center region of an end face of described valve seat 3, the side of described groove 41 is arc surface 42.Make the position of groove 41 not easily produce eddy current like this, and add the free air space of medium, on to greatest extent, increase the negotiability of this three eccentricity low temperature butterfly valve.
Please understood according to Fig. 2-3, described valve rod 2 comprises upper valve rod 21 and lower valve rod 22.Described upper valve rod 21 is arranged in the top of described valve body 1 rotationally and the top of described butterfly plate 4 is fixed in the bottom of described upper valve rod 21; Described lower valve rod 22 is arranged in the bottom of described valve body 1 rotationally and the bottom of described butterfly plate 4 is fixed at the top of described upper valve rod 21.
Certainly, in the present embodiment, the bottom of described upper valve rod 21 is fixed on the top of butterfly plate 4 by pin (not shown), and the relative position realizing butterfly plate 4 and valve body 1 immobilizes.And the axial direction of pin is vertical with upper valve rod 21 axial direction.As shown in Figure 4, the bottom of described lower valve rod 22 is arranged with gland pad 221 and a gland 222 successively, and gland 222 is fixed on the bottom of valve body 1 by the first bolt 223, and gland pad 221 is installed with between valve body 1 and gland 222.And the top of lower valve rod 22 is also fixed by a pin to the bottom of butterfly plate 4.
Please understood according to Fig. 5, the shape of cross section of described valve seat 3 is U-shaped, and one end of described valve seat 3 is arranged on the inner edge surface of described valve body 1, and described valve seat 3 can produce resiliently deformable and the internal face of described valve seat 3 forms an annular arc surface 31.In the present embodiment, the material of this valve seat 3 is stainless steel, and this valve seat 3 has elasticity can produce resiliently deformable.
Simultaneously, described butterfly plate 4 to be fixed on described valve rod and to be positioned at the cavity of described valve body 1, the outer surface of the end near described valve seat 3 in described butterfly plate 4 is formed with a conical surface 43, and the described conical surface 43 is tightly connected with described annular arc surface 31 and forms a seal connecting pair.And described cavity isolation is formed separate Liang Ge airtight chamber 11 by described butterfly plate 4, when described butterfly plate 4 is opened, two described airtight chamber 11 are connected.
Wherein, adopt a U-shaped that the valve seat 3 of resiliently deformable also can occur, the compress variation making it possible to valve seat 3, to realize sealing effect, solves and needs tube road impacting force to realize the problem sealed; Simultaneously, valve seat 3 is directly positioned on the reserved valve seat mounting plane of valve body 1, accurately located by butterfly plate 4 pairs of valve seats 3, effectively auto-compensation has been carried out to the wearing and tearing of sealing surface, thus ensure that the self compensation between valve seat 3 and butterfly plate 4 and better sealability.
In addition, adopt the valve seat 3 of said structure form, make to there is assemblage gap 32 between valve seat 3 and valve body 1.Thus valve seat 3 can be floated, when butterfly plate 4 is closed, assemblage gap can provide enough distortion and fault tolerant workspace, and make valve leakage automatic inspection to ensure zero leakage, switching torque is little, safe and reliable.
As shown in Figure 5, on described annular arc surface 31 and the described conical surface 43, plating is provided with one deck hard chromium layers respectively.The sealing surface hard chromium plating of valve seat 3 and butterfly plate 4, increases greatly for the dust of severe service, the abrasion resistance properties of particle.
In addition, described three eccentricity low temperature butterfly valve also comprises a disc holder 5, one end of described disc holder 5 is detachable is connected to described valve body 1, and the other end is resisted against the other end of described valve seat 3, and is provided with a gasket seal 52 between described disc holder 5 and described valve body 1.The setting of disc holder 5 can further by seat compression on valve body 1, gasket seal 52 is for preventing the medium side leakage in the airtight chamber 11 of valve body 1 simultaneously.Certainly, in the using process of reality, one end of described valve body 1 is fixed in one end of disc holder 5 by the second bolt 51.
In addition, the end be connected with described valve body 1 in described valve seat is symmetrical arranged with the other end be connected with described disc holder 5 in described valve seat.Wherein, the valve seat of bi-directional symmetrical has two-way commutativity, considerably increases the working life of this three eccentricity low temperature butterfly valve.
As shown in Figure 2, described three eccentricity low temperature butterfly valve also comprises stuffing box device 6, and described stuffing box device 6 comprises: extension pipe 61, packing layer 62 and hold-down grid 63.Wherein, extension pipe 61 is sheathed on the outer surface of upper valve rod 21, the detachable top being connected to described valve body 1, the bottom of extension pipe 61.Preferably, the length of described extension pipe is 340mm.Now, the time that packing layer and external environment can be provided fully to contact, low temperature is avoided to end the temperature affecting packing layer.Meanwhile, extension pipe makes packing layer distance low-temperature medium have enough distances, under making packing layer be in normal temperature environment.
As shown in Figure 1, the top of described valve body 1 is fixed in the bottom of this extension pipe 61 by the 3rd bolt 611.Meanwhile, outside described 3rd bolt 611, be arranged with a pad 612, and described pad 612 is installed with between the head and extension pipe 61 of the 3rd bolt 611.
Please understood according to Fig. 6, packing layer 62 is installed with between the internal face and the outer surface of described upper valve rod 21 at the top of described extension pipe 61; Hold-down grid 63 is sheathed on the outer surface of described upper valve rod 21 and by the detachable top being connected to described extension pipe 61 of the 4th bolt 631, and the bottom of described hold-down grid 63 is installed with the top in described packing layer 62.Certainly, in the using process of reality, packing layer 62 adopts V-structure, and is closely cooperate between extension pipe 61.
In the present embodiment, the upper valve rod 21 lengthened and extension pipe 61 add the time that packing layer 62 contacts with the air of external environment, ensure that the position residing for packing layer 62 is under normal temperature environment, thus improve the working life of packing layer 62, and hold-down grid 63 is for compressing packing layer 62.
In addition, be installed with accumulation of energy circle 64 and upper stopping shim 65 between the internal face at the top of described extension pipe 61 and the outer surface of described upper valve rod 21, and described upper accumulation of energy circle 64 and upper stopping shim 65 are installed with between described extension pipe 61 and the bottom of described packing layer 62 successively along the axial direction of described upper valve rod 21.
Meanwhile, the top of described hold-down grid 63 is provided with a clamping annulus 66, and described clamping annulus 66 is sheathed on the outer surface of described upper valve rod 21.When pin wearing and tearing, when the connection between upper valve rod 21 and butterfly plate 4 is loosened, the medium in airtight chamber 11 easily enters in the pin-and-hole 211 of upper valve rod 21, thus is applied to the larger pressure in upper valve rod 21 bottom one, and upper valve rod 21 is easily blown out.In the present embodiment, the potential safety hazard that clamping annulus 66 may blow out for eliminating upper valve rod 21, thus add the Safety performance of this three eccentricity low temperature butterfly valve.
Please understood according to Fig. 7, lower accumulation of energy circle 67 and lower stopping shim 68 has been installed with between the internal face of the bottom of described extension pipe 61 and the outer surface of described upper valve rod 21, and described lower accumulation of energy circle 67 and lower stopping shim 68 are installed with between described extension pipe 61 and the top of described valve body 1 along the axial direction of described upper valve rod 21 successively, are also provided with Composition spacer 69 between the bottom of described extension pipe 61 and the top of described valve body 1.Wherein, Composition spacer 69 can prevent medium from leaking outside further.In the using process of reality, this Composition spacer can adopt stainless steel to add the Composition spacer of graphite.
In the present embodiment, upper accumulation of energy circle 64 and lower accumulation of energy circle 67 reduce the possibility that cryogenic media leaks from upper valve rod 21; Meanwhile, upper accumulation of energy circle 64 and lower accumulation of energy circle 67 respectively top stopping shim 65 and lower stopping shim 68 can play good sealability after fixing, thus prevent cryogenic media from leaking outside from valve rod.
In sum, the extension design adopted makes packing layer 62 life-span greatly lengthen, adopt a U-shaped full-metallic elastic seat, rely on elasticity to realize sealing effect, have good sealing and self compensation effect, leakage rate is low, there is two-way commutativity, long service life, switching torque is little, safe and reliable.
Although the foregoing describe embodiment of the present utility model, it will be understood by those of skill in the art that this only illustrates, protection domain of the present utility model is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present utility model and essence, can make various changes or modifications to these mode of executions, but these change and amendment all falls into protection domain of the present utility model.
Claims (10)
1. a three eccentricity low temperature butterfly valve, comprises valve body, valve rod, valve seat and butterfly plate, it is characterized in that, described valve rod is arranged in described valve body rotationally;
The shape of cross section of described valve seat is U-shaped, and one end of described valve seat is arranged on the inner edge surface of described valve body, and described valve seat can produce resiliently deformable and the internal face of described valve seat forms an annular arc surface;
Described butterfly plate to be fixed on described valve rod and to be positioned at the cavity of described valve body, the outer surface of the end near described valve seat in described butterfly plate is formed with a conical surface, the described conical surface and described annular arc surface are tightly connected and form a seal connecting pair, and described cavity isolation is formed separate Liang Ge airtight chamber by described butterfly plate, when described butterfly plate is opened, two described airtight chamber are connected.
2. three eccentricity low temperature butterfly valve as claimed in claim 1, is characterized in that, on described annular arc surface and the described conical surface, plating is provided with one deck hard chromium layers respectively.
3. three eccentricity low temperature butterfly valve as claimed in claim 1, it is characterized in that, described three eccentricity low temperature butterfly valve also comprises a disc holder, one end of described disc holder is detachable is connected to described valve body, the other end is resisted against the other end of described valve seat, and is provided with a gasket seal between described disc holder and described valve body.
4. three eccentricity low temperature butterfly valve as claimed in claim 3, it is characterized in that, the end be connected with described valve body in described valve seat is symmetrical arranged with the other end be connected with described disc holder in described valve seat.
5. the three eccentricity low temperature butterfly valve according to any one of claim 1-4, is characterized in that, the center region of the end face away from described valve seat in described butterfly plate offers a groove, and the side of described groove is arc surface;
Described valve rod comprises upper valve rod and lower valve rod, described upper valve rod is arranged in the top of described valve body rotationally and the top of described butterfly plate is fixed in the bottom of described upper valve rod, and described lower valve rod is arranged in the bottom of described valve body rotationally and the bottom of described butterfly plate is fixed at the top of described upper valve rod.
6. three eccentricity low temperature butterfly valve as claimed in claim 5, it is characterized in that, described butterfly plate is three eccentricity butterfly plate.
7. three eccentricity low temperature butterfly valve as claimed in claim 5, it is characterized in that, described three eccentricity low temperature butterfly valve also comprises stuffing box device, and described stuffing box device comprises:
Extension pipe, is sheathed on the outer surface of described upper valve rod, the detachable top being connected to described valve body, the bottom of described extension pipe;
Packing layer, is installed with between internal face in the top of described extension pipe and the outer surface of described upper valve rod;
Hold-down grid, be sheathed on the outer surface of described upper valve rod and the detachable top being connected to described extension pipe, and the bottom of described hold-down grid is installed with the top in described packing layer.
8. three eccentricity low temperature butterfly valve as claimed in claim 7, it is characterized in that, be installed with accumulation of energy circle and upper stopping shim between the internal face at the top of described extension pipe and the outer surface of described upper valve rod, and described upper accumulation of energy circle and upper stopping shim are installed with between described extension pipe and the bottom of described packing layer along the axial direction of described upper valve rod successively;
Lower accumulation of energy circle and lower stopping shim has been installed with between the internal face of the bottom of described extension pipe and the outer surface of described upper valve rod, and described lower accumulation of energy circle and lower stopping shim are installed with between described extension pipe and the top of described valve body along the axial direction of described upper valve rod successively, are also provided with Composition spacer between the bottom of described extension pipe and the top of described valve body.
9. three eccentricity low temperature butterfly valve as claimed in claim 7, it is characterized in that, the top of described hold-down grid is provided with a clamping annulus, and described clamping annulus is sheathed on the outer surface of described upper valve rod.
10. three eccentricity low temperature butterfly valve as claimed in claim 7, it is characterized in that, the length of described extension pipe is 340mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520495108.2U CN204784765U (en) | 2015-07-09 | 2015-07-09 | Three eccentric low temperature butterfly valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520495108.2U CN204784765U (en) | 2015-07-09 | 2015-07-09 | Three eccentric low temperature butterfly valves |
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| Publication Number | Publication Date |
|---|---|
| CN204784765U true CN204784765U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520495108.2U Active CN204784765U (en) | 2015-07-09 | 2015-07-09 | Three eccentric low temperature butterfly valves |
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| CN (1) | CN204784765U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990010A (en) * | 2017-12-31 | 2018-05-04 | 天津富赛克流体控制设备有限公司 | Low temperature butterfly valve |
| CN113039353A (en) * | 2018-09-10 | 2021-06-25 | G.W.力士克有限公司 | Valve assembly and method |
-
2015
- 2015-07-09 CN CN201520495108.2U patent/CN204784765U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990010A (en) * | 2017-12-31 | 2018-05-04 | 天津富赛克流体控制设备有限公司 | Low temperature butterfly valve |
| CN113039353A (en) * | 2018-09-10 | 2021-06-25 | G.W.力士克有限公司 | Valve assembly and method |
| CN113039353B (en) * | 2018-09-10 | 2023-09-29 | G.W.力士克有限公司 | Valve assembly and method |
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