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KR20170114183A - High Pressure Air Cleaning Device for Ball Valve - Google Patents

High Pressure Air Cleaning Device for Ball Valve Download PDF

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Publication number
KR20170114183A
KR20170114183A KR1020160041694A KR20160041694A KR20170114183A KR 20170114183 A KR20170114183 A KR 20170114183A KR 1020160041694 A KR1020160041694 A KR 1020160041694A KR 20160041694 A KR20160041694 A KR 20160041694A KR 20170114183 A KR20170114183 A KR 20170114183A
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South Korea
Prior art keywords
pressure air
ball
fixed
flange
air nozzle
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Ceased
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KR1020160041694A
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Korean (ko)
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김선용
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김선용
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Priority to KR1020160041694A priority Critical patent/KR20170114183A/en
Publication of KR20170114183A publication Critical patent/KR20170114183A/en
Ceased legal-status Critical Current

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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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
    • 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
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • 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
    • F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)

Abstract

본 발명은 볼 시트와 볼의 접촉 경계 틈새에 끼인 찌꺼기를 압축공기로 제거시키는 장치에 관한 것이다.
위쪽 끝에는 분기관(12)과 조립되기 위한 제 2 플랜지(10)가 고정되고 제 2 플랜지(10)의 아래에는 밸브의 몸체(1)에 형성된 경사턱(4)에 볼트(9)로 조립되기 위한 제 1 플랜지(8)가 고정되며, 밸브의 몸체(1)에 방사상으로 일정 간격으로 형성된 경사구멍(6) 안으로 각각 삽입된 채 볼(2)과 볼 시트(3)의 접촉 경계 틈새(G)를 향하는 에어노즐(7)과; 에어노즐(7)의 제 2 플랜지(10)와 볼트(14) 및 너트(15)로 조립되는 플랜지(13)가 고정되며 에어노즐(7)과 동일한 숫자로 구비되는 분기관(12)이 각각 용접으로 고정되고 고압공기공급관(16)으로부터 공급된 고압공기를 에어노즐(7)을 통해 분사되도록 하기 위한 고압공기분배관(11)과; 고압공기분배관(11)과 고압공기공급관(16) 사이에 조립되는 밸브(17)로 되는 볼 시트와 볼의 접촉 경계 틈새에 끼인 찌꺼기를 압축공기로 제거시키는 장치.
이러한 본 발명은 고압 공기를 이용하여 볼과 볼 시트의 접촉 경계 틈새에 끼인 찌꺼기를 항상 간단하고 편리하게 제거할 수 있어 볼과 볼 시트의 내구성을 크게 연장시킬 수 있는 효과가 있다.BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a device for removing debris trapped in a contact boundary gap between a ball seat and a ball with compressed air.
A second flange 10 for assembly with the branch pipe 12 is fixed to the upper end and a bolt 9 is fixed to the inclined step 4 formed on the valve body 1 below the second flange 10 And the contact boundary gaps G of the ball 2 and the ball seat 3 are respectively inserted into the inclined holes 6 formed at regular intervals in the radial direction of the valve body 1 An air nozzle 7 which faces the air nozzle 7; The flanges 13 assembled with the second flange 10 of the air nozzle 7 and the bolts 14 and the nuts 15 are fixed and the branch pipes 12 provided with the same number as the air nozzles 7 are Pressure air distribution pipe (11) fixed by welding and adapted to inject high-pressure air supplied from a high-pressure air supply pipe (16) through an air nozzle (7); Pressure air supply pipe (16), and a valve (17) assembled between the high-pressure air distribution pipe (11) and the high-pressure air supply pipe (16).
The present invention has the effect of greatly reducing the durability of the ball and the ball seat because it is possible to easily and conveniently remove the debris trapped in the contact boundary gap between the ball and the ball seat using high-pressure air.

Description

볼 시트와 볼의 접촉 경계 틈새에 끼인 찌꺼기를 압축공기로 제거시키는 장치{High Pressure Air Cleaning Device for Ball Valve}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a high-pressure air cleaning device for a ball valve,

..

[발명이 속하는 기술 분야 및 그 분야의 종래기술][TECHNICAL FIELD OF THE INVENTION AND RELATED ART OF THE SAME]

본 발명은 볼 시트와 볼의 접촉 경계 틈새에 끼인 찌꺼기를 압축공기로 제거시키는 장치에 관한 것이다.BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a device for removing a debris caught in a contact boundary gap between a ball seat and a ball with compressed air.

통상적으로 사용되는 볼 밸브는 볼(2)이 볼 시트(3)에 접촉되면서 밀폐를 이루고 핸들을 돌려서 볼(2)을 몸체(1)의 통로(1-1)와 관통시키면 유체 등이 통로(1-1)를 관통한다. 그런데, 관로 내부가 부식되거나 몸체(1) 내부를 흐르는 유체에 미세한 찌꺼기(금속성 이물질, 유성 이물질, 먼지 등)가 볼(2)과 볼 시트(3)의 접촉 경계 틈새(G)에 끼일 수밖에 없고 이와 같이 찌꺼기가 끼면 볼(2)이 볼 시트(3)에 접촉된 채 회전운동을 할 때 찌꺼기가 연마제 작용을 하여 결국 볼(2)과 볼 시트(3)의 수명이 단축되고 나아가 누수현상이 일어나게 된다.A ball valve commonly used is a ball valve which is hermetically sealed when the ball 2 is in contact with the ball seat 3 and the ball 2 is passed through the passage 1-1 of the body 1 by turning the handle, 1-1. However, fine irregularities (metallic foreign matter, oily foreign matter, dust, and the like) must be caught in the contact boundary gaps G between the balls 2 and the ball seat 3, When the balls 2 are rotated in contact with the ball seat 3, the abrasive action acts on the balls 2 and the ball seat 3 to shorten the life of the ball seat 3, It happens.

현재까지 본 발명과 같이 고압 공기를 이용하여 볼 시트(3)와 볼(2)의 접촉 경계 틈새(G)에 끼인 찌꺼기를 제거시킬 수 있는 장치 또는 공법이 출현되지는 않았는데, 참고로 하는 문헌에서 특허등록 제0809647호는 관 세척 기술이 구비된 볼 밸브이기는 하나 본 발명과는 기술 구성이 완전히 별개의 것이고 구조가 복잡다단한 문제가 있다.Until now, there has been no apparatus or method for eliminating debris in the contact boundary gaps G between the ball seat 3 and the ball 2 by using high-pressure air as in the present invention, Patent No. 0809647 is a ball valve equipped with a pipe cleaning technology, but has a completely different technical structure from that of the present invention and has a complicated structure.

다음, 특허등록 제1120268호 및 특허공개번호 10-2009-0035916호 등 많은 볼 밸브에 대한 참고문헌을 살펴보아도 고압공기를 이용하여 볼(2)과 볼 시트(3)의 접촉 경계 틈새(G)에 끼인 찌꺼기를 고압 공기로 제거하는 본 발명과 유사한 장치가 없음을 밝힌다.In the following, referring to references of many ball valves such as Patent Registration No. 1120268 and Patent Publication No. 10-2009-0035916, the contact boundary gap G between the ball 2 and the ball seat 3 using high- It is clear that there is no apparatus similar to the present invention in which the debris caught in the air is removed by the high-pressure air.

특허등록 제0809647호Patent No. 0809647 특허등록 제1120268호Patent Registration No. 1120268 특허공개번호 10-2009-0035916호Patent Publication No. 10-2009-0035916

[발명이 이루고자 하는 기술적 과제][Technical Problem]

본 발명은 앞에서 설명한 바와 같이 고압공기를 이용하여 볼(2)과 볼 시트(3)의 접촉 경계 틈새(G)에 끼인 찌꺼기를 제거하는 장치를 제안하는 것이 과제이다.It is an object of the present invention to propose an apparatus for removing debris sandwiched by a contact boundary gap G between a ball 2 and a ball seat 3 using high-pressure air as described above.

[발명의 구성 및 작용][Structure and operation of the invention]

상술한 과제를 해결할 수 있는 본 발명은 다음과 같이 구성된다.The present invention capable of solving the above-mentioned problems is constituted as follows.

위쪽 끝에는 분기관(12)과 조립되기 위한 제 2 플랜지(10)가 고정되고 제 2 플랜지(10)의 아래에는 밸브의 몸체(1)에 형성된 경사턱(4)에 볼트(9)로 조립되기 위한 제 1 플랜지(8)가 고정되며, 밸브의 몸체(1)에 방사상으로 일정 간격으로 형성된 경사구멍(6) 안으로 각각 삽입된 채 볼(2)과 볼 시트(3)의 접촉 경계 틈새(G)를 향하는 에어노즐(7)과;A second flange 10 for assembly with the branch pipe 12 is fixed to the upper end and a bolt 9 is fixed to the inclined step 4 formed on the valve body 1 below the second flange 10 And the contact boundary gaps G of the ball 2 and the ball seat 3 are respectively inserted into the inclined holes 6 formed at regular intervals in the radial direction of the valve body 1 An air nozzle 7 which faces the air nozzle 7;

에어노즐(7)의 제 2 플랜지(10)와 볼트(14) 및 너트(15)로 조립되는 플랜지(13)가 고정되며 에어노즐(7)과 동일한 숫자로 구비되는 분기관(12)이 각각 용접으로 고정되고 고압공기공급관(16)으로부터 공급된 고압공기를 에어노즐(7)을 통해 분사되도록 하기 위한 고압공기분배관(11)과;The flanges 13 assembled with the second flange 10 of the air nozzle 7 and the bolts 14 and the nuts 15 are fixed and the branch pipes 12 provided with the same number as the air nozzles 7 are Pressure air distribution pipe (11) fixed by welding and adapted to inject high-pressure air supplied from a high-pressure air supply pipe (16) through an air nozzle (7);

고압공기분배관(11)과 고압공기공급관(16) 사이에 조립되는 밸브(17)로 되는 장치이다.And a valve 17 assembled between the high-pressure air distribution pipe 11 and the high-pressure air supply pipe 16.

이어서 본 발명을 상세히 살피기로 한다.Hereinafter, the present invention will be described in detail.

먼저 본 발명을 실시하기 위해서는 도면과 같이 몸체(1)에 방사상으로 일정 간격을 유지하면서 형성되는 경사구멍(6)을 형성시키는 것이 중요한데, 몸체(1)의 외면에 경사 턱(4)을 형성시켜서 경사구멍(6)을 드릴링을 하기가 편하도록 하는 것이 좋으며 경사구멍(6)은 몸체(1)의 원주를 따라서 경사가 지면서 방사상으로 형성되도록 하되 경사구멍(6)의 중심은 볼 시트(3)와 볼(2)이 만나는 접촉 경계(G)를 향하도록 하여야 한다.In order to implement the present invention, it is important to form an inclined hole 6 formed in the body 1 while maintaining a predetermined gap in the radial direction as shown in the figure. The inclined jaw 4 is formed on the outer surface of the body 1 The inclined hole 6 is preferably made to be easily drilled and the inclined hole 6 is formed to be radially inclined along the circumference of the body 1, And the contact boundary G where the ball 2 meets.

여기서 도면 3과 같이 경사 턱(4)에는 함몰평면부(5)를 형성시켜서 에어노즐(7)의 제 1 플랜지(8)가 안정되게 고정이 되도록 하는 것이 더 좋고 경사구멍(6)의 좌우에는 나사구멍(77)을 형성시켜서 볼트(9)로 에어노즐(7)의 제 1 플랜지(8)를 고정시키도록 한다.3, it is preferable to form the recessed plane portion 5 on the inclined jaw 4 so that the first flange 8 of the air nozzle 7 can be stably fixed. In the right and left of the inclined hole 6, The screw hole 77 is formed to fix the first flange 8 of the air nozzle 7 with the bolt 9. [

에어노즐(7)은 경사구멍(6) 안에 삽입이 되면 그 중심이 볼 시트(3)와 볼(2)이 만나는 접촉 경계(G)를 향하게 되는 것은 당연하다.It is natural that the center of the air nozzle 7 is inserted into the inclined hole 6 so as to face the contact boundary G where the ball sheet 3 and the ball 2 meet.

이어서 플랜지(13)가 고정된 분기관(12)이 각각 용접으로 고정된 고압공기분배관(11)의 플랜지(13)와 에어노즐(7)의 제 2 플랜지(10)가 접촉되도록 하고 볼트(14)와 너트(15)로 조립시킨다. 이때 패킹을 사용할 수 있다.The flange 13 of the high-pressure air distribution pipe 11 to which the branch pipe 12 to which the flange 13 is fixed is fixed by welding is brought into contact with the second flange 10 of the air nozzle 7, 14) and the nut (15). At this time, packing can be used.

이와 같이 된 본 발명은 도면 5의 상태와 같이 볼(2)이 개방된 상태에서 또는 볼이 밀폐된 상태에서 컴프레셔에 연결된 고압공기공급관(16)의 밸브(17)를 개방시키면 에어노즐(7)을 통해 고압의 공기가 볼(2)과 볼 시트(3)의 접촉 경계(G)를 향하여 강하게 분사가 된다. 이때 강하게 분사되는 공기는 상술한 경사구멍(6)의 중심이 볼(2)과 볼 시트(3)의 접촉 경계(G)를 향하고 있기 때문에 회오리(와류)를 강하게 일으킴과 동시에 볼(2)과 볼 시트(3)의 접촉 경계(G)에 끼인 찌꺼기를 매우 효과적으로 제거를 시킨다.The present invention as described above can be applied to the air nozzle 7 by opening the valve 17 of the high-pressure air supply pipe 16 connected to the compressor in the state that the ball 2 is opened or the ball is closed, Pressure air is strongly injected toward the contact boundary G between the ball 2 and the ball seat 3. [ Since the center of the inclined hole 6 is directed toward the contact boundary G between the ball 2 and the ball seat 3, strong air is blown from the ball 2, So that the debris stuck in the contact boundary G of the ball seat 3 is very effectively removed.

물론 이와 같은 찌꺼기 제거작업은 관로 안에 유체가 흐르기 전(前)과 관로를 유체가 다 빠져나가서 관로가 비어 있을 때에 실시하여야 하는 것임은 당연한 것이다.Of course, it is natural that such debris removal work must be carried out before the fluid flows into the pipeline and when the fluid is drained from the pipeline and the pipeline is empty.

상술한 바와 같이 볼(2)과 볼 시트(3)의 접촉 경계(G)에 끼어 있던 찌꺼기는 경사구멍(6)의 각도 형성에 의해 관로 안으로 배출이 되고 이러한 찌꺼기는 관로를 타고 유체와 함께 배출이 되는데, 관로를 타고 필요한 장소로 이동된 유체는 필터링을 한 후 사용을 하기 때문에 유체에 찌꺼기가 포함된 채 공급이 되어도 문제가 없다.As described above, the debris sandwiched by the contact boundary G between the ball 2 and the ball 3 is discharged into the duct by the angle formed in the inclined hole 6, and the debris is discharged along with the fluid Since the fluid that has been moved to a necessary place on the pipeline is used after filtering, there is no problem even if the fluid is supplied with the residue.

이상과 같은 본 발명은 매우 간단한 구조를 가지면서 찌꺼기의 제거작용이 뛰어난 일(working)을 하는 것이다.The present invention as described above has a very simple structure and works well for removing the debris.

본 발명은 고압공기를 이용하여 볼과 볼 시트의 접촉 경계 틈새에 끼인 찌꺼기를 항상 간단하고 편리하게 제거할 수 있어 볼과 볼 시트의 내구성을 크게 연장시킬 수 있는 효과가 있다.According to the present invention, it is possible to always easily and conveniently remove the debris trapped in the contact boundary gaps between the ball and the ball seat by using high-pressure air, thereby greatly extending the durability of the ball and the ball seat.

도면 1은 본 발명의 장치가 조립되는 밸브 몸체를 나타낸 단면도.
도면 2는 도면 1의 경사구멍 주변을 발췌하여 확대한 단면도.
도면 3은 도면 1의 A-A선 확대 단면도.
도면 4는 경사구멍에 에어노즐이 조립되는 요령을 나타내는 참고도.
도면 5는 본 발명이 몸체에 장치된 상태를 나타낸 단면도.
도면 6은 도면 5의 에어노즐 부분을 확대하여 나타낸 단면도.
도면 7은 도면 5의 본 발명이 장치된 부분을 확대하여 나타낸 단면도.1 is a cross-sectional view of a valve body in which the device of the present invention is assembled;
2 is an enlarged cross-sectional view taken around the inclined hole of FIG. 1; FIG.
3 is an enlarged cross-sectional view taken along line AA of FIG. 1;
4 is a reference view showing the manner in which an air nozzle is assembled in the inclined hole;
5 is a sectional view showing a state where the present invention is installed on a body.
6 is an enlarged cross-sectional view showing an air nozzle portion of FIG. 5;
FIG. 7 is an enlarged cross-sectional view of a portion of FIG. 5 where the present invention is applied.

..

1: 몸체 2: 볼 3: 볼 시트 4: 경사턱 6: 경사구멍
7: 에어노즐 11: 고압공기분배관 12: 분기관 17: 밸브1: body 2: ball 3: ball sheet 4: beveled jaw 6: beveled hole
7: air nozzle 11: high-pressure air distribution pipe 12: branch pipe 17: valve

Claims (1)

위쪽 끝에는 분기관(12)과 조립되기 위한 제 2 플랜지(10)가 고정되고 제 2 플랜지(10)의 아래에는 밸브의 몸체(1)에 형성된 경사턱(4)에 볼트(9)로 조립되기 위한 제 1 플랜지(8)가 고정되며, 밸브의 몸체(1)에 방사상으로 일정 간격으로 형성된 경사구멍(6) 안으로 각각 삽입된 채 볼(2)과 볼 시트(3)의 접촉 경계 틈새(G)를 향하는 에어노즐(7)과;
에어노즐(7)의 제 2 플랜지(10)와 볼트(14) 및 너트(15)로 조립되는 플랜지(13)가 고정되며 에어노즐(7)과 동일한 숫자로 구비되는 분기관(12)이 각각 용접으로 고정되고 고압공기공급관(16)으로부터 공급된 고압공기를 에어노즐(7)을 통해 분사되도록 하기 위한 고압공기분배관(11)과;
고압공기분배관(11)과 고압공기공급관(16) 사이에 조립되는 밸브(17)로 되는 볼 시트와 볼의 접촉 경계 틈새에 끼인 찌꺼기를 압축공기로 제거시키는 장치.A second flange 10 for assembly with the branch pipe 12 is fixed to the upper end and a bolt 9 is fixed to the inclined step 4 formed on the valve body 1 below the second flange 10 And the contact boundary gaps G of the ball 2 and the ball seat 3 are respectively inserted into the inclined holes 6 formed at regular intervals in the radial direction of the valve body 1 An air nozzle 7 which faces the air nozzle 7;
The flanges 13 assembled with the second flange 10 of the air nozzle 7 and the bolts 14 and the nuts 15 are fixed and the branch pipes 12 provided with the same number as the air nozzles 7 are Pressure air distribution pipe (11) fixed by welding and adapted to inject high-pressure air supplied from a high-pressure air supply pipe (16) through an air nozzle (7);
Pressure air supply pipe (16), and a valve (17) assembled between the high-pressure air distribution pipe (11) and the high-pressure air supply pipe (16).
KR1020160041694A 2016-04-04 2016-04-04 High Pressure Air Cleaning Device for Ball Valve Ceased KR20170114183A (en)

Priority Applications (1)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019199534A1 (en) * 2018-04-10 2019-10-17 Fisher Controls International Llc Purge apparatus for use with fluid valves
KR102053611B1 (en) 2018-07-31 2019-12-09 동명대학교산학협력단 Washable ball valve with status measurement
US20220212237A1 (en) * 2021-01-04 2022-07-07 Saudi Arabian Oil Company Simultaneously unblocking multiple valve fittings
US11828386B1 (en) 2022-05-24 2023-11-28 Flowserve Pte. Ltd. Purge assemblies for valves and related devices, apparatus, systems, and methods
WO2024102656A1 (en) * 2022-11-10 2024-05-16 Flowserve Pte. Ltd. Ball valve with downstream residue purge

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019199534A1 (en) * 2018-04-10 2019-10-17 Fisher Controls International Llc Purge apparatus for use with fluid valves
KR102053611B1 (en) 2018-07-31 2019-12-09 동명대학교산학협력단 Washable ball valve with status measurement
US20220212237A1 (en) * 2021-01-04 2022-07-07 Saudi Arabian Oil Company Simultaneously unblocking multiple valve fittings
US11839908B2 (en) * 2021-01-04 2023-12-12 Saudi Arabian Oil Company Simultaneously unblocking multiple valve fittings
US12208429B2 (en) 2021-01-04 2025-01-28 Saudi Arabian Oil Company Simultaneously unblocking multiple valve fittings
US11828386B1 (en) 2022-05-24 2023-11-28 Flowserve Pte. Ltd. Purge assemblies for valves and related devices, apparatus, systems, and methods
WO2023228024A1 (en) * 2022-05-24 2023-11-30 Flowserve Pte. Ltd. Purge assemblies for valves and related devices, apparatus, systems, and methods
WO2024102656A1 (en) * 2022-11-10 2024-05-16 Flowserve Pte. Ltd. Ball valve with downstream residue purge
US12011745B2 (en) * 2022-11-10 2024-06-18 Flowserve Pte. Ltd. Ball valve with downstream residue purge

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