CN107061857A - Electronic Fluorine-lined bellows single-seat adjusting valve - Google Patents

Electronic Fluorine-lined bellows single-seat adjusting valve Download PDF

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Publication number
CN107061857A
CN107061857A CN201710102945.8A CN201710102945A CN107061857A CN 107061857 A CN107061857 A CN 107061857A CN 201710102945 A CN201710102945 A CN 201710102945A CN 107061857 A CN107061857 A CN 107061857A
Authority
CN
China
Prior art keywords
valve
bonnet
bellows
valve rod
fluorine
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
CN201710102945.8A
Other languages
Chinese (zh)
Inventor
毛春龙
毛金根
陈善俊
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.)
JIANGSU JINSHENGYUAN SPECIAL VALVES CO Ltd
Original Assignee
JIANGSU JINSHENGYUAN SPECIAL VALVES 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 JIANGSU JINSHENGYUAN SPECIAL VALVES CO Ltd filed Critical JIANGSU JINSHENGYUAN SPECIAL VALVES CO Ltd
Priority to CN201710102945.8A priority Critical patent/CN107061857A/en
Publication of CN107061857A publication Critical patent/CN107061857A/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
    • F16K1/32Details
    • 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
    • F16K37/00Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0083For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
    • 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
    • F16K41/00Spindle sealings
    • F16K41/10Spindle sealings with diaphragm, e.g. shaped as bellows or tube

Abstract

Electronic Fluorine-lined bellows single-seat adjusting valve, is related to a kind of manufacturing technology field of Special valve.Including valve body, bonnet, valve rod, valve element, valve body is additionally provided with installation connector, flange during connector is set is installed, water channel stage casing between valve body import and export is provided with the seal face coordinated with valve element, valve element is fixed on one end of valve rod, valve element is arranged in valve body, is installed connector and is connected bonnet by middle flange, packing seal mechanism is set between the top of bonnet and institute's valve rod;Polytetrafluoroethylbellows bellows are set on valve rod in valve body, polytetrafluoroethylbellows bellows two ends are contradicted with bonnet inner face, spool end respectively, YE is fixedly connected with by support in the upper end of valve body, the output end of YE is fixedly connected with the top of valve rod.Using polytetrafluoroethylbellows bellows as first of sealing, effectively protection medium can not be leaked at valve rod, constitute zero leakage;Opened, closed by YE control valve, stroke is accurate, safe and reliable.

Description

Electronic Fluorine-lined bellows single-seat adjusting valve
Technical field
The present invention relates to a kind of Special valve, more particularly to chlorine, chlorine water special service valve.
Technical field
In order to overcome the defect of prior art, the present invention provides a kind of electronic Fluorine-lined bellows single-seat adjusting valve.
The present invention includes valve body, bonnet, valve rod, valve element, and the valve body includes import, outlet, and the valve body is additionally provided with peace Load interface, the import and export sets flange, flange, the valve body import and export in the installation connector setting respectively Between water channel stage casing be provided with the seal face coordinated with valve element, the valve element is fixed on one end of the valve rod, the valve Core is arranged in the valve body, and the seal face of the valve element and the water channel is fitted close, and the installation connector is in Flange connects the bonnet, and one section of valve rod for connecting the valve element is arranged in the valve body, and the bonnet passes through bolt, nut It is fixedly connected with the middle flange, the valve rod passes through bonnet central through hole, is set between the top of the bonnet and institute's valve rod Put packing seal mechanism;In the valve body madial wall, middle end face of flange, flange end face difference full lining fluoroplastic layer;Institute State and polytetrafluoroethylbellows bellows are set on the valve rod in valve body, the polytetrafluoroethylbellows bellows two ends are inner with bonnet respectively Face, spool end are contradicted, and sealing mechanism are set between the polytetrafluoroethylbellows bellows upper end and the bonnet, described The upper end of valve body is fixedly connected with YE by support, and the output end of the YE and the top of the valve rod are consolidated Fixed connection.
The present invention is using polytetrafluoroethylbellows bellows as first of sealing, and effectively protection medium can not be let out at valve rod Leakage, constitutes zero leakage;Open, close additionally by YE control valve, stroke is accurate, safe and reliable.
The present invention sets one section of pipe to connect between the bonnet and the valve body, one end that the pipe connects and the middle flange End face is fitted close, and the other end that the pipe connects is fitted close with the bonnet end face, and the pipe connects madial wall and two ends end face Connected between the middle flange of full lining fluoroplastics, the bonnet and the valve body by stay bolt, nut, stay bolt passes through the pipe Connect outside;Pipe is connected to the effect of fixed bellows, effectively prevents polytetrafluoroethylbellows bellows from deforming and damaging, and causes leakage, from And service life is longer.
Further, the middle end face of flange sets one to enclose concave surface, and the pipe, which connects, to be fitted snugly in the concave surface, is passed through It is more preferable that concave surface connects more stable, sealing effectiveness.
Packing seal mechanism of the present invention is combined for the seal of V-type multistage dense, and the V-type multistage dense seal combination is arranged on In stuffing-box between bonnet and the valve rod, gland is threadedly coupled at stuffing-box opening, filler depression bar compresses the V The seal of type multistage dense is combined, and the gland is set on the valve rod;Packing seal herein is used as bellows top Insurance sealing, is to prevent ring from leaking outside, in the case that bellows is not bad, the stuffing-box in a dormant state, once find from valve Leaked outside at bar, just tighten up the nut on gland, reach safety effect.
Valve element of the present invention include flap, the flap be coated with ptfe composite layer, the flap with The valve body water channel seal face coordinates, and one end of the polytetrafluoroethylbellows bellows and the polytetrafluoroethylene (PTFE) of the flap are combined Material layer is welded as a whole;It is wholely set the life requirements that can ensure that valve is persistently used for a long time.
Using cone, plane sealing structure between the seal face of flap of the present invention and the valve body water channel.
The upper end connection valve rod lowering or hoisting gear of valve rod of the present invention, the valve rod lowering or hoisting gear includes and support assorted Locating piece, the pedestal lower end of connection YE is fixed on the bonnet top, the support include two pillars, on Supporting plate, lower supporting plate, the centrally disposed through hole of lower supporting plate, the lower supporting plate are nested with the bonnet by through hole End is simultaneously held in bonnet top bar, and in the bonnet upper end, lateral wall is threaded, and bonnet upper end is connected through a screw thread Nut, nut compresses the lower supporting plate;Connected between the upper and lower supporting plate by two pillar supports, described The locating piece is set, and the locating piece is made up of two halves location-plate, location-plate described in two halves is logical from side between two pillars Cross bolt, nut and be fixed into locating piece, each location-plate middle part is respectively equipped with arc groove, and two halves arc groove synthesizes a bulb Accommodating chamber, one of end of each location-plate sets arcwall face, and the arcwall face of two location-plate ends pieces together one big arc Face, the locating piece wherein one end is coincide by big cambered surface and pillar described in both sides, is formed positioning, is oriented to;The valve rod it is upper End sets bulb;The YE is fixed on the cantilever tip, and the output end of the YE is arranged to bulb, The upper end of the valve rod, the lower end of YE are connected in the bulb accommodating chamber by the way that bulb is spacing respectively.
The present invention is oriented to by locating piece and stanchions, and valve rod, the output end of YE are connected by bulb respectively It is connected in locating piece, after startup, upper and lower motion is done in the output end rotation of YE, and YE passes through locating piece band The upper and lower motion of ovable valve stem, so ensures that bottom valve rod is only moved up and down, and is not rotated, if rotated, can be turned round Bad bellows, while this horizontal locating piece makees valve opening instruction again, be exactly valve open how much, pass through electronic execution now Device is adjusted, and is controlled more accurate.
The present invention is not connected with the pillar of the locating piece setting graduated scale, the freedom of the locating piece in the support End is arranged to triangle tip, and tip end and the graduated scale of the locating piece are correspondingly arranged.Pass through the straight of scale and tip See display, it can be seen that the stroke distances of valve rod.
Background technology
At present, the domestic valve using on the high chlorine pipeline of water content, is traditional fluoroplastic all-liner stop valve, should Class valve mechanism is outmoded, is common plane type, generally ordinary carbon steel lining, and the even cast iron lining having, its product is used Performance can not meet the safety requirements of operating mode actual motion, often leakage, and housing is easily perforated so that chemical enterprise particularly chlor-alkali Chemical enterprise, the system valve is frequently necessary to safeguard and changed, and extreme influence is brought to enterprise's production.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the invention.
Embodiment
As shown in figure 1, this electronic Fluorine-lined bellows single-seat adjusting valve, including valve body 1, bonnet 2, valve rod 3, valve element 4, valve body 1 includes import 5, outlet 6, and valve body 1 is additionally provided with installation connector 7, and import and export 5,6 sets flange 8 respectively, installs connection Water channel stage casing between flange 9 during mouth 7 is set, the import and export of valve body 1 is provided with the seal face 10 coordinated with valve element 4, valve element 4 One end of valve rod 3 is fixed on, valve element 4 is arranged in valve body 1, the seal face 10 of valve element 4 and water channel is fitted close, connection is installed Mouthfuls 7 connect bonnet by middle flange 9, and one section of valve rod 3 of connection valve element 4 is arranged in valve body 1, bonnet 2 by bolt, nut with Middle flange 9 is fixedly connected, and valve rod 3 passes through the central through hole of bonnet 2, and packing seal machine is set between the top of bonnet 2 and valve rod 3 Structure 11;In the madial wall of valve body 1, the end face of middle flange 9, the end face of flange 8 difference full lining fluoroplastic layer 12;Valve in valve body 1 Polytetrafluoroethylbellows bellows 13 are set on bar 3, and the two ends of polytetrafluoroethylbellows bellows 13 are supported with bonnet inner face, spool end respectively Touch, sealing mechanism 14 is set between the upper end of polytetrafluoroethylbellows bellows 13 and bonnet 2, branch 35 is passed through in the upper end of valve body 1 YE 36 is fixedly connected with, the output end of YE 36 is fixedly connected with the top of valve rod 3.
The upper end connection valve rod lowering or hoisting gear 15 of valve rod 3, valve rod lowering or hoisting gear 15 includes the locating piece coordinated with support 35 19, the lower end of support 35 of connection YE 36 is fixed on the top of bonnet 2, and support 35 includes two pillars 18, upper backup pads 16th, lower supporting plate 17, the centrally disposed through hole of lower supporting plate 17, lower supporting plate 17 is nested with the upper end of bonnet 2 and put by through hole It is placed in the top bar of bonnet 2, is threaded in the upper end lateral wall of bonnet 2, the upper end of bonnet 2 is connected through a screw thread nut 22, spiral shell Mother 22 compresses lower supporting plate 17;Connected between upper and lower supporting plate 16,17 by the support of two pillars 18, two pillars 18 it Between locating piece 19 is set, locating piece 19 is made up of two halves location-plate 24, and two halves location-plate 24 is fixed sideways through bolt, nut Into locating piece 19, each middle part of location-plate 24 is respectively equipped with arc groove, and two halves arc groove synthesizes a bulb accommodating chamber, each fixed One of end of position plate 19 sets arcwall face respectively, and the arcwall face of this end of location-plate 19 pieces together one big cambered surface, fixed Block 19 wherein one end in position is coincide by big cambered surface with wherein one pillar 18, is formed positioning, is oriented to;The upper end of valve rod 3 sets ball Head, YE 36 is fixed on the top of support 35, and the output end of YE 36 is arranged to bulb, the upper end of valve rod 3, electricity The lower end of dynamic actuator 36 is connected in bulb accommodating chamber by the way that bulb is spacing respectively.The branch of locating piece 19 is not connected with support 35 Graduated scale 20 is set on post, and the free end of locating piece 19 is arranged to triangle tip, the tip end of locating piece 19 and graduated scale 20 are correspondingly arranged.
Further set one section of pipe to connect 27 between bonnet 2 and valve body 1, pipe connect 27 one end and the middle end face of flange 9 it is tight Close fit, pipe connects 27 other end and the end face of bonnet 2 is fitted close, and pipe connects 27 madial walls and two ends end face full lining fluoroplastic layer, Connected between bonnet 2 and the middle flange 9 of valve body 1 by stay bolt 28, nut 29, stay bolt 28 connects 27 outsides by pipe;Middle method Blue 9 end faces set one to enclose concave surface 30, and pipe connects 27 and fitted snugly in concave surface 30;Pipe, which connects 27, fixed bellows, effectively Prevent polytetrafluoroethylbellows bellows from deforming and damaging, cause leakage, it is longer thereby using the life-span.
Packing seal mechanism 11 be the seal of V-type multistage dense combination 31, the seal of V-type multistage dense combination 31 be arranged on bonnet 2 with In stuffing-box 32 between valve rod 3, gland 33 is threadedly coupled at the opening of stuffing-box 32, it is many that gland 33 compresses V-type Level sealing ring combination 31, gland 33 is set on valve rod 3;Packing seal herein is close as the insurance on bellows top Envelope.
Valve element 4 includes flap 34, and flap 34 is coated with ptfe composite layer, and flap 34 and the water channel of valve body 1 are close End-blocking face coordinates, and one end of polytetrafluoroethylbellows bellows 13 is welded as a whole with the ptfe composite layer of flap 34; Using cone, plane sealing structure between the seal face of flap 34 and the water channel of valve body 1.

Claims (8)

1. electronic Fluorine-lined bellows single-seat adjusting valve, including valve body, bonnet, valve rod, valve element, the valve body include import, outlet, The valve body is additionally provided with installation connector, and the import and export sets flange, method in the installation connector setting respectively Water channel stage casing between orchid, the valve body import and export is provided with the seal face coordinated with valve element, and the valve element is fixed on described One end of valve rod, the valve element is arranged in the valve body, and the seal face of the valve element and the water channel is fitted close, described Connector is installed the bonnet is connected by middle flange, one section of valve rod for connecting the valve element is arranged in the valve body, described Bonnet is fixedly connected by bolt, nut with the middle flange, and the valve rod passes through bonnet central through hole, in the bonnet and institute Packing seal mechanism is set between the top of valve rod;It is complete in the valve body madial wall, middle end face of flange, flange end face difference Fluorine-lined plastic layer;Polytetrafluoroethylbellows bellows, the polytetrafluoroethylbellows bellows two ends are set on the valve rod in the valve body Contradict, set between the polytetrafluoroethylbellows bellows upper end and the bonnet with bonnet inner face, spool end respectively Sealing mechanism, it is characterised in that YE, the YE are fixedly connected with by support in the upper end of the valve body Output end be fixedly connected with the top of the valve rod.
2. electronic Fluorine-lined bellows single-seat adjusting valve according to claim 1, it is characterised in that the bonnet with it is described One section of pipe is set to connect between valve body, one end that the pipe connects is fitted close with the middle end face of flange, the other end that the pipe connects It is fitted close with the bonnet end face, the pipe connects madial wall and two ends end face full lining fluoroplastics, the bonnet and the valve body Middle flange between connected by stay bolt, nut, on the outside of stay bolt is connect by the pipe.
3. electronic Fluorine-lined bellows single-seat adjusting valve according to claim 1, it is characterised in that the middle end face of flange is set A circle concave surface is put, the pipe, which connects, to be fitted snugly in the concave surface.
4. electronic Fluorine-lined bellows single-seat adjusting valve according to claim 1, it is characterised in that the packing seal mechanism Combined for the seal of V-type multistage dense, the V-type multistage dense seal combination is arranged in the stuffing-box between bonnet and the valve rod, Gland is threadedly coupled at stuffing-box opening, filler depression bar compresses the V-type multistage dense seal combination, the gland It is set on the valve rod.
5. electronic Fluorine-lined bellows single-seat adjusting valve according to claim 1, it is characterised in that the valve element includes flap, The flap is coated with ptfe composite layer, and the flap coordinates with the valve body water channel seal face, described poly- One end of tetrafluoroethene bellows and the ptfe composite layer of the flap are welded as a whole.
6. electronic Fluorine-lined bellows single-seat adjusting valve according to claim 1, it is characterised in that the flap and the valve Using cone, plane sealing structure between the seal face of body water channel.
7. electronic Fluorine-lined bellows single-seat adjusting valve according to claim 1, it is characterised in that the upper end of the valve rod connects Valve rod lowering or hoisting gear is connect, the valve rod lowering or hoisting gear includes the locating piece with support assorted, connects the branch of YE Frame lower end is fixed on the bonnet top, and the support includes two pillars, upper backup pad, lower supporting plates, the lower supporting plate Centrally disposed through hole, the lower supporting plate is nested with the bonnet upper end and is held in bonnet top bar by through hole, Bonnet upper end lateral wall is threaded, and bonnet upper end is connected through a screw thread nut, and nut compresses the lower supporting plate;Institute State between upper and lower supporting plate and to be connected by two pillars supports, the locating piece, institute are set between two pillars State locating piece to be made up of two halves location-plate, location-plate described in two halves is fixed into locating piece sideways through bolt, nut, each positioning Arc groove is respectively equipped with the middle part of plate, two halves arc groove synthesizes a bulb accommodating chamber, one of end of each location-plate Arcwall face is set, and the arcwall face of two location-plate ends pieces together one big cambered surface, and the locating piece wherein one end passes through big arc Face coincide with pillar described in both sides, forms positioning, is oriented to;The upper end of the valve rod sets bulb;The YE is fixed In the cantilever tip, the output end of the YE is arranged to bulb, under the upper end of the valve rod, YE End is connected in the bulb accommodating chamber by the way that bulb is spacing respectively.
8. electronic Fluorine-lined bellows single-seat adjusting valve according to claim 7, it is characterised in that not connected in the support Graduated scale is set on the pillar of the locating piece, and the free end of the locating piece is arranged to triangle tip, the locating piece Tip end is correspondingly arranged with the graduated scale.
CN201710102945.8A 2017-02-24 2017-02-24 Electronic Fluorine-lined bellows single-seat adjusting valve Pending CN107061857A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710102945.8A CN107061857A (en) 2017-02-24 2017-02-24 Electronic Fluorine-lined bellows single-seat adjusting valve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710102945.8A CN107061857A (en) 2017-02-24 2017-02-24 Electronic Fluorine-lined bellows single-seat adjusting valve
PCT/CN2018/073992 WO2018153203A1 (en) 2017-02-24 2018-01-24 Electric fluorine-lined corrugated pipe single-seat regulating valve

Publications (1)

Publication Number Publication Date
CN107061857A true CN107061857A (en) 2017-08-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710102945.8A Pending CN107061857A (en) 2017-02-24 2017-02-24 Electronic Fluorine-lined bellows single-seat adjusting valve

Country Status (2)

Country Link
CN (1) CN107061857A (en)
WO (1) WO2018153203A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108167462A (en) * 2018-02-08 2018-06-15 江苏金晟元特种阀门股份有限公司 Corrugated pipe chlorine dedicated regulation valve
CN108167451A (en) * 2018-02-08 2018-06-15 江苏金晟元特种阀门股份有限公司 Corrugated pipe chlorine Special cut-off valve
WO2018153203A1 (en) * 2017-02-24 2018-08-30 江苏金晟元特种阀门股份有限公司 Electric fluorine-lined corrugated pipe single-seat regulating valve
CN108488428A (en) * 2018-05-21 2018-09-04 江苏金晟元特种阀门股份有限公司 Fluoroplastic all-liner cuts off diaphragm valve

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CN203322342U (en) * 2013-06-17 2013-12-04 胡相兰 Pneumatic single-seat regulating valve
CN203516755U (en) * 2013-09-24 2014-04-02 鞍山新高仪表有限公司 Electronic type electric accurate small-size single-seated adjusting valve
CN106090380A (en) * 2016-08-22 2016-11-09 江苏金晟元特种阀门股份有限公司 Fluoroplastic all-liner corrugated tube valve special for chlorine

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CN107061857A (en) * 2017-02-24 2017-08-18 江苏金晟元特种阀门股份有限公司 Electronic Fluorine-lined bellows single-seat adjusting valve

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RU2116538C1 (en) * 1997-04-30 1998-07-27 Научно-производственная и внедренческая фирма "Аргонавт" при Научно-исследовательском институте вакуумной техники им.С.А.Векшинского Shut-off adjusting single-seat valve
CN2634207Y (en) * 2003-03-13 2004-08-18 周庆男 Pneumatic and electric flurine plastic lined corrugated pipe seal regulating valve
CN201166130Y (en) * 2008-03-28 2008-12-17 大连亨利测控仪表工程有限公司 Lining fluorine anti-corrosive control valve
CN203322342U (en) * 2013-06-17 2013-12-04 胡相兰 Pneumatic single-seat regulating valve
CN203516755U (en) * 2013-09-24 2014-04-02 鞍山新高仪表有限公司 Electronic type electric accurate small-size single-seated adjusting valve
CN106090380A (en) * 2016-08-22 2016-11-09 江苏金晟元特种阀门股份有限公司 Fluoroplastic all-liner corrugated tube valve special for chlorine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018153203A1 (en) * 2017-02-24 2018-08-30 江苏金晟元特种阀门股份有限公司 Electric fluorine-lined corrugated pipe single-seat regulating valve
CN108167462A (en) * 2018-02-08 2018-06-15 江苏金晟元特种阀门股份有限公司 Corrugated pipe chlorine dedicated regulation valve
CN108167451A (en) * 2018-02-08 2018-06-15 江苏金晟元特种阀门股份有限公司 Corrugated pipe chlorine Special cut-off valve
CN108488428A (en) * 2018-05-21 2018-09-04 江苏金晟元特种阀门股份有限公司 Fluoroplastic all-liner cuts off diaphragm valve

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Application publication date: 20170818