KR100572341B1 - A butterfly valve having check valve - Google Patents

A butterfly valve having check valve Download PDF

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Publication number
KR100572341B1
KR100572341B1 KR1020050110050A KR20050110050A KR100572341B1 KR 100572341 B1 KR100572341 B1 KR 100572341B1 KR 1020050110050 A KR1020050110050 A KR 1020050110050A KR 20050110050 A KR20050110050 A KR 20050110050A KR 100572341 B1 KR100572341 B1 KR 100572341B1
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South Korea
Prior art keywords
valve
check valve
butterfly valve
butterfly
disc
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KR1020050110050A
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Korean (ko)
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최수웅
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주식회사현대밸브
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift 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
    • F16K1/16—Lift 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
    • F16K1/18—Lift 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
    • F16K1/22—Lift 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
    • F16K1/222—Shaping of the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0218—Butterfly valves

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Check Valves (AREA)

Abstract

본 발명은 체크밸브 일체형 버터플라이 밸브에 관한 것으로, 그 목적은 펌프설비의 구조를 간단하게 하고, 면간거리를 축소시키도록 하기 위해서 밸브바디에 버터플라이 밸브용 디스크와 체크밸브용 디스크를 일체로 형성시킨 체크밸브 일체형 버터플라이 밸브를 제공함에 있다. 이는 양측이 개방되어 유체가 유동가능하도록 유로가 형성된 밸브바디(10)와, 상기 유로상의 일측에 설치되어진 버터플라이 밸브용 디스크(20)와, 상기 유로상의 타측에 설치되어진 체크밸브용 디스크(30)를 포함하며, 상기 체크밸브용 디스크(30)의 양측으로 상기 밸브바디(10) 상에 부관홀(13)이 형성된 것이다.The present invention relates to a butterfly valve integrated butterfly valve, the object of which is to form a butterfly valve disc and a check valve disc integrally in the valve body in order to simplify the structure of the pump equipment, and to reduce the interplanar distance To provide a check valve integrated butterfly valve. The valve body 10 has a flow path formed so that both sides are open to allow fluid to flow, a butterfly valve disc 20 provided at one side of the flow path, and a check valve disc 30 provided at the other side of the flow path. ), And the secondary pipe hole 13 is formed on the valve body 10 at both sides of the check valve disk 30.

밸브바디, 버터플라이 밸브용 디스크, 체크밸브용 디스크 Valve body, disc for butterfly valve, disc for check valve

Description

체크밸브 일체형 버터플라이 밸브{A butterfly valve having check valve}Butterfly valve having check valve

도 1은 종래에 따른 펌프 설비를 나타낸 도면.1 is a view showing a pump installation according to the prior art.

도 2는 본 발명에 따른 체크밸브 일체형 버터플라이 밸브의 제1실시예를 나타낸 도면.Figure 2 shows a first embodiment of a check valve integrated butterfly valve according to the present invention.

도 3은 도 2의 A - A선 단면도.3 is a cross-sectional view taken along the line AA of FIG.

도 4는 도 2의 B - B선 단면도.4 is a cross-sectional view taken along the line B-B in FIG.

도 5는 본 발명에 따른 체크밸브 일체형 버터플라이 밸브의 제2실시예를 나타낸 도면.Figure 5 shows a second embodiment of the check valve integrated butterfly valve according to the present invention.

도 6은 본 발명에 따른 체크밸브 일체형 버터플라이 밸브의 제3실시예를 나타낸 도면.Figure 6 shows a third embodiment of the check valve integrated butterfly valve according to the present invention.

(도면중 주요 부분에 대한 부호의 설명)(Explanation of symbols for the main parts of the drawing)

10: 밸브바디 11, 12: 시트면10: valve body 11, 12: seat surface

13: 부관홀 20: 버터플라이 밸브용 디스크13: Auxiliary hole 20: Disc for butterfly valve

21: 구동수단 22: 편심축21: drive means 22: eccentric shaft

30: 체크밸브용 디스크 31: 무게추30: check valve disc 31: weight

32: 유압실린더 33: 이중편심축32: hydraulic cylinder 33: double eccentric shaft

70: 펌프70: pump

본 발명은 체크밸브 일체형 버터플라이 밸브에 관한 것으로, 더욱 상세하게는 밸브바디에 버터플라이 밸브용 디스크와 체크밸브용 디스크를 일체로 형성시킨 체크밸브 일체형 버터플라이 밸브에 관한 것이다.The present invention relates to a check valve integrated butterfly valve, and more particularly, to a check valve integrated butterfly valve in which the butterfly valve disc and the check valve disc are integrally formed on the valve body.

일반적으로 상,하수도, 공업용수, 정수장, 댐 등의 펌프장에는 버터플라이 밸브, 체크밸브 및 안전변 등의 각종 펌프 설비가 설치된다.Generally, pump stations such as water supply, sewage, industrial water, water purification plants, dams, etc. are provided with various pump facilities such as butterfly valves, check valves, and safety valves.

도 1은 종래에 따른 펌프 설비를 나타낸 도면이다.1 is a view showing a conventional pump equipment.

도면상 부호 1은 펌프, 부호 2는 버터플라이 밸브, 부호 3은 체크밸브, 부호 4는 버터플라이 밸브와 체크밸브 사이를 연결하는 제1단관, 부호 5는 체크밸브의 일측에 결합되어진 제2단관을 나타내고 있다.In the drawing, reference numeral 1 is a pump, 2 is a butterfly valve, 3 is a check valve, 4 is a first end pipe connecting the butterfly valve and the check valve, and 5 is a second end pipe coupled to one side of the check valve. Indicates.

상기 버터플라이 밸브(2)는 펌프(1)에서 토출되는 유체를 개폐하는 것으로, 양측이 개방되어 일측은 펌프(1)의 토출측에 결합되어지는 밸브바디(2a)와, 상기 밸브바디(2a)의 내부에 회전가능하게 장착되어 상기 밸브바디(2a) 내부를 개폐시키도록 회전 동작되는 디스크(2b)와, 상기 밸브바디(2a)의 일측에 장착되어 상기 디스크(2a)를 회전동작시키는 구동수단(미도시)을 포함하는 것이다.The butterfly valve (2) opens and closes the fluid discharged from the pump (1), the valve body (2a) and the valve body (2a) coupled to the discharge side of one side is opened on one side of the pump (1), the valve body (2a) A disk 2b rotatably mounted in the interior of the valve body 2a and rotatably opening and closing the inside of the valve body 2a, and driving means mounted on one side of the valve body 2a to rotate the disk 2a. (Not shown).

또한, 상기 체크밸브(3)는 펌프(1)가 정지되었을 경우 펌프(1) 측으로 유체가 역류하지 못하도록 유체를 차단하는 것으로, 밸브하우징(3a)과, 상기 밸브하우징(3a)의 내측에 설치되고, 유체의 흐름에 따라 일측으로 개방되는 디스크(3b)로 구성되어 있다.In addition, the check valve (3) shuts off the fluid so that the fluid does not flow back to the pump (1) when the pump (1) is stopped, it is installed inside the valve housing (3a) and the valve housing (3a) And the disk 3b which opens to one side according to the flow of a fluid.

또한, 상기 디스크(3b)는 상부의 힌지축(3c)을 중심으로 일측으로 개방되며, 펌프(1)가 동작이 정지되면 자중에 의해 유로를 폐쇄하게 된다.In addition, the disk 3b is opened to one side around the upper hinge shaft 3c, and the pump 1 closes the flow path by its own weight when the operation of the pump 1 is stopped.

또한, 상기 제2단관(5)에는 공기변(6)이 부착되어 유로 내부의 공기를 외부로 배출하는 기능을 수행하게 된다.In addition, an air valve 6 is attached to the second end pipe 5 to discharge the air inside the flow path to the outside.

상기와 같이 구성된 펌프설비는 펌프(1)가 구동됨과 아울러 버터플라이 밸브(2)가 구동수단에 의해 개방되면, 유체는 버터플라이 밸브(2)를 통과하여 체크밸브(3)를 개방시키면서 유체를 토출하게 된다.When the pump 1 is driven and the butterfly valve 2 is opened by the driving means, the pump device configured as described above passes the butterfly valve 2 to open the check valve 3 while opening the fluid. Discharge.

또한, 펌프(1)의 동작이 정지되면 개방되었던 체크밸브(3)의 디스크(3b)가 자중에 의해 닫히면서 유체의 역류를 방지하게 된다.In addition, when the operation of the pump 1 is stopped, the disk 3b of the open check valve 3 is closed by its own weight to prevent the back flow of the fluid.

그러나, 상기와 같은 펌프설비는 버터플라이 밸브(2), 체크밸브(3) 등이 각각 다른 몸체로 구성되고, 제1,2단관(4)(6) 등이 필요하기 때문에 면간 거리가 길어 작업공간이 넓게 되는 문제점이 있다.However, the above pump equipment is composed of a butterfly valve (2), a check valve (3) and the like, respectively, the first and second end pipes (4) (6), etc., because the distance between the surfaces is long work There is a problem that the space becomes wider.

또한, 체크밸브(3)에는 바이패스 밸브 부착용 부관(미도시) 등의 천공 작업이 필요하여 시공에 소요되는 인력, 비용 및 노력이 많이 필요한 문제점이 있다.In addition, the check valve 3 requires a perforation operation such as a bypass pipe attachment sub-pipe (not shown), which requires a lot of manpower, cost, and effort required for construction.

본 발명은 이러한 종래의 문제점을 해결하기 위하여 이루어진 것으로, 그 목적은 펌프설비의 구조를 간단하게 하고, 면간거리를 축소시키도록 하기 위해서 밸브바디에 버터플라이 밸브용 디스크와 체크밸브용 디스크를 일체로 형성시킨 체크밸브 일체형 버터플라이 밸브를 제공함에 있다.The present invention has been made to solve such a conventional problem, the purpose of which is to integrate the butterfly valve disc and the check valve disc integrally in the valve body in order to simplify the structure of the pump equipment, and to reduce the interplanar distance To provide a check valve integrated butterfly valve formed.

이러한 목적을 달성하기 위한 본 발명은 양측이 개방되어 유체가 유동가능하도록 유로가 형성된 밸브바디와, 상기 유로상의 일측에 설치되어진 버터플라이 밸브용 디스크와, 상기 유로상의 타측에 설치되어진 체크밸브용 디스크를 포함하며, 상기 체크밸브용 디스크의 양측으로 상기 밸브바디 상에 부관홀이 형성된 것이다.The present invention for achieving this object is a valve body having a flow path so that both sides are open to flow fluid, a butterfly valve disk provided on one side of the flow path, and a check valve disk provided on the other side on the flow path It includes, and the secondary pipe hole is formed on the valve body to both sides of the check valve disk.

또한, 상기 버터플라이 밸브용 디스크의 회전중심은 중심에서 축방향으로 일정간격 이격된 편심축으로 이루어진 것이다.In addition, the center of rotation of the disk for the butterfly valve is made of an eccentric shaft spaced apart at regular intervals in the axial direction from the center.

또한, 상기 체크밸브용 디스크의 중심은 회전중심에서 축방향으로 일정간격 이격됨과 아울러 반경방향으로 일정간격 이격된 이중편심축으로 이루어진 것이다.In addition, the center of the check valve disk is composed of a double eccentric shaft spaced apart at regular intervals in the axial direction at the center of rotation and spaced apart in the radial direction.

삭제delete

이하 본 발명의 바람직한 실시예를 첨부된 도면에 의거하여 상세하게 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2 내지 도 6은 본 발명에 따른 체크밸브 일체형 버터플라이 밸브를 나타낸 도면이며, 참고로 도 3 및 도 4는 디스크가 개방된 상태를 나타내었다.2 to 6 are views showing a check valve integrated butterfly valve according to the present invention, and for reference, FIGS. 3 and 4 show a state in which the disc is opened.

도시한 바와 같이 체크밸브 일체형 버터플라이 밸브는 밸브바디(10), 버터플라이 밸브용 디스크(20) 및 체크밸브용 디스크(30)를 포함한다.As shown, the check valve integrated butterfly valve includes a valve body 10, a butterfly valve disc 20, and a check valve disc 30.

상기 밸브바디(10)는 양측이 개방되어 유체가 유동가능하도록 유로가 형성되어 있다.The valve body 10 has a flow path formed so that both sides are open to allow fluid to flow.

또한, 상기 밸브바디(10)에는 후술하는 버터플라이 밸브용 디스크(20)와 체 크밸브용 디스크(30)가 각각 접촉되는 시트면(11)(12)이 형성되어 있다.In addition, the valve body 10 is formed with a seat surface 11, 12 which is in contact with the butterfly valve disk 20 and the check valve disk 30 to be described later.

상기 버터플라이 밸브용 디스크(20)는 상기 유로상의 일측에 설치되어진 것으로, 구동수단(21)이 일측에 설치되어 개폐가능하게 조작되고, 회전중심은 중심에서 축방향으로 일정간격 이격된 편심축(22)으로 이루어지도록 하는 것이 바람직하다.The butterfly valve disk 20 is installed on one side of the flow path, the drive means 21 is installed on one side to operate the opening and closing, the center of rotation is an eccentric shaft spaced apart at regular intervals in the axial direction ( 22) is preferable.

상기 체크밸브용 디스크(30)는 상기 유로상의 타측에 설치되어진 것으로, 일측에 무게추(31)와 유압실린더(32)가 설치되어 일측으로 유체가 흐를 경우에 유압실린더(32)가 전진하면서 체크밸브용 디스크(30)를 개방하게 되고, 유체의 흐름이 차단되면 무게추(31)의 자중에 의해 체크밸브용 디스크(30)를 폐쇄시키게 된다.The check valve disk 30 is installed on the other side of the flow path, the weight weight 31 and the hydraulic cylinder 32 is installed on one side, when the fluid flows to one side, the hydraulic cylinder 32 is advanced while checking When the valve disc 30 is opened and the flow of fluid is blocked, the check valve disc 30 is closed by the weight of the weight 31.

또한, 상기 체크밸브용 디스크(30)의 중심은 회전중심에서 축방향으로 일정간격 이격됨과 아울러 반경방향으로 일정간격 이격된 이중편심축(33)으로 이루어지도록 하는 것이 바람직하다.In addition, the center of the check valve disk 30 is preferably made of a double eccentric shaft 33 spaced apart at regular intervals in the axial direction at the center of rotation and spaced apart in the radial direction.

또한, 상기 체크밸브용 디스크(30)의 양측으로 상기 밸브바디(10) 상에 부관홀(13)이 형성되는데 상기 부관홀(13)에 의해 양측의 압력차를 감소시켜 디스크의 원활한 개폐가 가능하게 된다.In addition, both sides of the check valve disk 30 is formed on the valve body 10, the secondary pipe hole 13 is formed by reducing the pressure difference between the two sides by the secondary pipe hole 13 enables the smooth opening and closing of the disk. Done.

또한, 제1실시예에서는 부관홀(13)에 공기변(40)을 부착하여 내부의 공기를 배출시킬 수 있는 상태를 나타내고 있으며, 도 5에 도시한 바와 같이 부관홀(13)에 바이패스밸브(50)를 부착시킬 수도 있으며, 도 6에 도시한 바와 같이 부관홀(13)에 안전밸브(60)를 부착시킬 수 있다.In addition, in the first embodiment, the air valve 40 is attached to the sub pipe hole 13 to discharge the air therein. As shown in FIG. 5, a bypass valve is provided in the sub pipe hole 13. 50 may be attached, and as shown in FIG. 6, the safety valve 60 may be attached to the auxiliary pipe hole 13.

한편, 미설명 부호 70은 펌프를 나타내고 있다.In addition, reference numeral 70 denotes a pump.

본 발명에 따른 작용을 상세히 설명하면 다음과 같다.Referring to the operation according to the invention in detail as follows.

펌프장 등의 펌프(70)에 본 발명에 따른 체크밸브 일체형 버터플라이 밸브를 설치하게 되는데 체크밸브용 디스크(30)와 버터플라이 밸브용 디스크(20)가 밸브바디(10)에 설치되어 면간거리가 축소되고, 종래와는 달리 단관 등도 불필요하여 경량화 및 소형화가 가능하고, 공사 기간이 단축되며, 최적의 시공이 가능하다.The check valve integrated butterfly valve according to the present invention is installed in the pump 70 such as a pumping station, and the check valve disc 30 and the butterfly valve disc 20 are installed on the valve body 10 so that the interplanar distance is increased. It is reduced, and unlike the conventional, it is also unnecessary, such as a single pipe, it is possible to lighten and downsized, construction period is shortened, and optimal construction is possible.

펌프(70)가 구동되면 버터플라이 밸브용 디스크(20)를 구동수단(21)에 의해 회전시키게 되면, 유체가 이송되면서 유체의 압력에 의해 체크밸브용 디스크(30)가 개방된다.When the pump 70 is driven to rotate the butterfly valve disk 20 by the drive means 21, the check valve disk 30 is opened by the pressure of the fluid while the fluid is transferred.

반대로 펌프(70)의 구동이 중지되면 체크밸브용 디스크(30)가 무게추(31)의 자중에 의해 닫히게 된다.On the contrary, when the driving of the pump 70 is stopped, the check valve disk 30 is closed by the weight of the weight 31.

또한 부관홀(13)에 밸브 특성상 공기변(40), 바이패스 밸브(50) 또는 안전밸브(60) 등을 설치할 수 있다.In addition, an air valve 40, a bypass valve 50, a safety valve 60, or the like may be installed in the auxiliary pipe hole 13 due to the characteristics of the valve.

본 발명은 첨부된 도면에 도시된 일 실시예를 참고로 설명한 것이나, 당해 기술 분야의 통상의 지식을 가진 자들에게는 다양한 변형 및 다른 실시예가 가능하다는 점이 이해될 것이다.Although the present invention has been described with reference to one embodiment shown in the accompanying drawings, it will be understood that various modifications and other embodiments are possible to those skilled in the art.

이상 상세히 설명한 바와 같은 본 발명에 따른 체크밸브 일체형 버터플라이 밸브는 밸브바디에 버터플라이 밸브용 디스크와 체크밸브용 디스크를 일체로 형성시킴으로서, 펌프설비의 구조를 간단하게 하고, 면간거리를 축소시킬 수 있다.The butterfly valve integrated butterfly valve according to the present invention as described in detail above forms the butterfly valve disc and the check valve disc integrally on the valve body, thereby simplifying the structure of the pumping equipment and reducing the interplanar distance. have.

또한, 기존의 밸브보다 경량화 및 소형화가 가능하고, 공사 기간이 단축되 며, 최적의 시공이 가능하다.In addition, it is possible to reduce the weight and size of the existing valve, shorten the construction period, and optimal construction is possible.

Claims (4)

양측이 개방되어 유체가 유동가능하도록 유로가 형성된 밸브바디(10)와, A valve body 10 having a flow path formed at both sides thereof to allow fluid to flow, 상기 유로상의 일측에 설치되어진 버터플라이 밸브용 디스크(20)와, A butterfly valve disk 20 provided on one side of the flow path; 상기 유로상의 타측에 설치되어진 체크밸브용 디스크(30)를 포함하며, It includes a check valve disk 30 installed on the other side of the flow path, 상기 체크밸브용 디스크(30)의 양측으로 상기 밸브바디(10) 상에 부관홀(13)이 형성된 것을 특징으로 하는 체크밸브 일체형 버터플라이 밸브.Butterfly valve integrated butterfly valve, characterized in that the auxiliary pipe hole (13) is formed on the valve body (10) on both sides of the check valve disk (30). 제1항에 있어서, 상기 버터플라이 밸브용 디스크(20)의 회전중심은 중심에서 축방향으로 일정간격 이격된 편심축(22)으로 이루어진 것을 특징으로 하는 체크밸브 일체형 버터플라이 밸브.The butterfly valve integrated butterfly valve according to claim 1, wherein the center of rotation of the butterfly valve disk (20) is an eccentric shaft (22) spaced at a predetermined distance from the center in the axial direction. 제1항에 있어서, 상기 체크밸브용 디스크(30)의 중심은 회전중심에서 축방향으로 일정간격 이격됨과 아울러 반경방향으로 일정간격 이격된 이중편심축(33)으로 이루어진 것을 특징으로 하는 체크밸브 일체형 버터플라이 밸브.According to claim 1, wherein the center of the check valve disc 30 is a check valve integrated type, characterized in that the center of rotation is spaced apart at regular intervals in the axial direction, and a double eccentric shaft 33 spaced at regular intervals in the radial direction. Butterfly valve. 삭제delete
KR1020050110050A 2005-11-17 2005-11-17 A butterfly valve having check valve KR100572341B1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101578181B1 (en) 2015-10-14 2015-12-17 주식회사현대밸브 Butterfly valves inclined to improve stability of the pipe
KR101590549B1 (en) * 2015-09-25 2016-02-02 주식회사현대밸브 A butterfly valve with check valve having separation and elasticity fuction
KR101608420B1 (en) * 2015-08-26 2016-04-04 주식회사현대밸브 Butterfly valve having a one-piece check valve cavitation protection
KR20230037714A (en) 2021-09-09 2023-03-17 주식회사 브이티엘 Backflow prevention type butterfly valve
KR102613965B1 (en) 2023-05-11 2023-12-15 티아이엘씨 주식회사 foamed aluminum panel cutting machine

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JPS6362971A (en) 1986-09-04 1988-03-19 Toshiba Corp Steam valve
KR910001294A (en) * 1989-06-27 1991-01-30 설기철 Two gate valve
US6216737B1 (en) 2000-05-05 2001-04-17 Nibco Inc. Flanged three-way universal butterfly valve
KR20050114191A (en) * 2004-05-31 2005-12-05 가부시키가이샤 도모에 기쥬츠 겐큐쇼 Triple eccentric butterfly valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6362971A (en) 1986-09-04 1988-03-19 Toshiba Corp Steam valve
KR910001294A (en) * 1989-06-27 1991-01-30 설기철 Two gate valve
US6216737B1 (en) 2000-05-05 2001-04-17 Nibco Inc. Flanged three-way universal butterfly valve
KR20050114191A (en) * 2004-05-31 2005-12-05 가부시키가이샤 도모에 기쥬츠 겐큐쇼 Triple eccentric butterfly valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101608420B1 (en) * 2015-08-26 2016-04-04 주식회사현대밸브 Butterfly valve having a one-piece check valve cavitation protection
KR101590549B1 (en) * 2015-09-25 2016-02-02 주식회사현대밸브 A butterfly valve with check valve having separation and elasticity fuction
KR101578181B1 (en) 2015-10-14 2015-12-17 주식회사현대밸브 Butterfly valves inclined to improve stability of the pipe
KR20230037714A (en) 2021-09-09 2023-03-17 주식회사 브이티엘 Backflow prevention type butterfly valve
KR102613965B1 (en) 2023-05-11 2023-12-15 티아이엘씨 주식회사 foamed aluminum panel cutting machine

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