KR20030096152A - A control check valve - Google Patents

A control check valve Download PDF

Info

Publication number
KR20030096152A
KR20030096152A KR1020030083081A KR20030083081A KR20030096152A KR 20030096152 A KR20030096152 A KR 20030096152A KR 1020030083081 A KR1020030083081 A KR 1020030083081A KR 20030083081 A KR20030083081 A KR 20030083081A KR 20030096152 A KR20030096152 A KR 20030096152A
Authority
KR
South Korea
Prior art keywords
valve seat
valve
check valve
hole
fluid
Prior art date
Application number
KR1020030083081A
Other languages
Korean (ko)
Other versions
KR100578152B1 (en
Inventor
이영순
김정애
이상설
Original Assignee
이영순
김정애
이상설
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 이영순, 김정애, 이상설 filed Critical 이영순
Priority to KR1020030083081A priority Critical patent/KR100578152B1/en
Publication of KR20030096152A publication Critical patent/KR20030096152A/en
Application granted granted Critical
Publication of KR100578152B1 publication Critical patent/KR100578152B1/en

Links

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
    • F16K15/00Check valves
    • F16K15/02Check valves with guided rigid valve members
    • F16K15/025Check valves with guided rigid valve members the valve being loaded by a spring
    • 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
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • 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
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/02Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209Check valves or pivoted valves
    • 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
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/44Mechanical actuating means
    • F16K31/60Handles

Landscapes

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

Abstract

PURPOSE: A control check valve is provided to prevent the liquid from sticking to a valve seat, thereby solving the problems on the valve opening/closing operation and controlling the delivery amount of liquid according to the opening rate of the valve seat. CONSTITUTION: A valve seat(8) opens/closes a liquid hole(3) according to the liquid pressure with elastically contacting to a disc guider. A shaft rod(9) is elastically supported on a spring(12) on a buffer(11) integral with a guide ring fixed at one side of the liquid hole. A connecting flange(5) is connected to an elevating slider(7) having an engaging hole(6) and a connection(7b) on the valve body. The elevating slider forms a slope(7a) to pass through the shaft rod connected to the valve seat. The elevating slider is engaged with a slide hole(10) having the slope to adjust the opening of the valve seat.

Description

콘트롤 체크 밸브{A control check valve}Control check valve

본 발명은 콘트롤 체크 밸브에 관한 것으로서, 더욱 상세히는 스모랜스키 체크 밸브(SMOLENSKY check valves)의 구조를 개선하여 강제적으로 개폐가 가능하면서도 선택적으로 체크 밸브 기능을 수행할 수 있도록 하여 단속하는 유체가 밸브시트에서 고착화되는 것을 방지할 수 있는 등 다수의 효과를 제공할 수 있는 콘트롤 체크 밸브를 제공코자 하는 것이다.The present invention relates to a control check valve, and more specifically, to improve the structure of the Smolensky check valves (SMOLENSKY check valves) to be able to open and close forcibly and to selectively perform a check valve function to control the valve It is an object of the present invention to provide a control check valve that can provide a number of effects such as preventing the sheet from sticking to the seat.

통상 체크 밸브는 유체통수공을 통과하는 유체의 압력이 밸브시트에 가해지면 일측으로 밸브시트가 각운동하면서 유체통수공이 개방되고, 압력이 저하되면 밸브시트가 각운동 폐쇄되도록 한 것으로서,In general, the check valve is to open the fluid flow hole while the valve seat is angular movement to one side when the pressure of the fluid passing through the fluid flow hole is applied to the valve seat, and the valve seat is closed by the angular movement when the pressure is reduced,

이러한 체크 밸브는 유체를 일방향으로 단속할 수 있다는 이점은 있으나, 밸브시트에 유체가 고착화되는 문제점 등으로 인하여 이의 개선이 절실히 요망되었던 것이다.Such a check valve has the advantage of being able to control the fluid in one direction, but due to the problem that the fluid is fixed to the valve seat, such improvements have been desperately desired.

이에 본 발명에서는 기존 체크 밸브가 갖는 제 기능을 발휘하면서, 필요에 따라 밸브를 강제로 개방 및 폐쇄작동 시킬 수 있는 콘트롤 가능한 체크 밸브를 제공코자 하는 것으로서,Accordingly, the present invention is to provide a controllable check valve capable of forcibly opening and closing the valve as necessary, while exhibiting the functions of the conventional check valve,

본 발명은 특히 밸브시트를 체크 밸브 가동범위내에서 일정 폭 슬라이드 개폐 작동이 유체에 의해 이루어지면서 일반적인 체크 밸브의 기능을 수행토록 하고, 선택적으로 핸들을 이용하여 밸브시트를 강제로 개방 및 폐쇄작동으로 전환할 수 있도록 한 콘트롤 체크 밸브를 제공함에 발명의 기술적 과제를 두고 본 발명을 완성한 것이다.In particular, the present invention allows the valve seat to perform a function of a general check valve while a certain width slide opening / closing operation is performed by a fluid within a check valve operating range, and the valve seat is forcibly opened and closed by using a handle. The present invention has been completed in view of the technical problem of the present invention by providing a control check valve capable of switching.

도 1은 본 발명의 바람직한 일실시예를 보인 콘트롤 체크 밸브의 강제 폐쇄Figure 1 is a forced closing of the control check valve showing a preferred embodiment of the present invention

상태를 보인 단면도Section showing the status

도 2는 본 발명의 바람직한 일실시예를 보인 콘트롤 체크 밸브의 일반 체크Figure 2 is a general check of the control check valve showing a preferred embodiment of the present invention

밸브 상태를 보인 단면도Sectional view showing valve status

도 3은 본 발명의 바람직한 일실시예를 보인 콘트롤 체크 밸브의 강제 개방3 is a forced opening of the control check valve showing a preferred embodiment of the present invention

상태를 보인 단면도Section showing the status

도 4는 본 발명의 요부인 축봉을 보인 발췌 사시도Figure 4 is a perspective view showing the shaft of the main portion of the present invention

도 5는 본 발명의 요부인 승강슬라이더를 보인 발췌 사시도Figure 5 is a perspective view showing the lifting slider which is the main part of the present invention

■ 도면의 주요부분에 사용된 부호의 설명 ■■ Explanation of symbols used in main part of drawing ■

1: (콘트롤 체크) 밸브2: 밸브 몸체1: (control check) Valve 2: Valve body

3: 유체통수공4: 핸들3: fluid passage 4: handle

4a: 축5: 연결플랜지4a: shaft 5: connecting flange

6: 결합공7: 승강슬라이더6: Combiner 7: lifting slider

7a: 경사면8: 밸브시트7a: slope 8: valve seat

9: 축봉10: 슬라이드공9: shaft 10: slide ball

10a: 경사면11: 버퍼10a: slope 11: buffer

12: 스프링13: 디스크가이더12: spring 13: disc guider

도 1내지 3은 본 발명에서 제공하는 콘트롤 체크 밸브(1)의 강제 폐쇄, 체크밸브 기능 수행상태, 강제 개방 상태를 각각 보인 단면 구성도이며, 도 4,5는 본 발명의 요부를 발췌한 사시도 등으로서, 이들 도면과 함께 본 발명의 구성을 이하에 상세히 설명하면 다음과 같다.1 to 3 is a cross-sectional configuration diagram showing a forced closing, a check valve function performing state, a forced opening state of the control check valve (1) provided by the present invention, Figures 4 and 5 are perspective views showing the main parts of the present invention The present invention will be described in detail below with reference to these drawings.

즉, 본 발명의 콘트롤 체크 밸브(1)는 통상의 스모랜스키 체크 밸브의 밸브 몸체(2)상에 형성되는 유체통수공(3)과 직교하는 방향에서 축(4a) 결합되는 핸들(4)의 하단에 연결플랜지(5)를 형성하고, 상기 연결플랜지(5)에 끼움고정되는 결합공(6)을 가진 개략 크랭크형의 승강슬라이더(7)를 연결한다.That is, the control check valve 1 of the present invention is the handle 4 coupled to the shaft 4a in a direction orthogonal to the fluid passage 3 formed on the valve body 2 of the conventional Smolanski check valve. The connection flange 5 is formed at the lower end of the connection, and the roughly crank-type lifting slider 7 having a coupling hole 6 fitted into the connection flange 5 is connected.

상기 승강슬라이더(7)는 좌우 단부에는 경사면(7a)을 형성하여 밸브시트(8)와 연결된 축봉(9)상에 상하로 관통되게 형성된 슬라이드공(10)에 결합시켜 상하로 승강토록 하되, 상기 슬라이드공(10)의 좌우에도 상기 경사면(7a)에 대응하는 경사면(10a)을 형성한다. 상기 승강슬라이더(7)상에 형성되는 좌우 경사면(7a) 상간의 상하 연결부(7b) 간격(t1)은 축봉(9)의 직경(Ф) 보다 약간 넓게 하고, 상하 연결부(7b)의 폭(t2)은 슬라이드공(10)의 폭(t3) 보다 짧게 하되, 슬라이드공(10)의 폭(t3)에서 연결부(7b)의 폭(t2)을 뺀 간격이 밸브시트(8)의 좌우 슬라이드 개폐 폭 정도가 되도록 한다.The lifting slider (7) is formed to the inclined surface (7a) at the left and right ends to be coupled to the slide hole (10) formed so as to penetrate up and down on the shaft (9) connected to the valve seat (8) to be raised and lowered up and down, the The inclined surface 10a corresponding to the inclined surface 7a is also formed on the left and right sides of the slide hole 10. The space | interval t1 of the up-and-down connection part 7b between the left and right inclined surfaces 7a formed on the lifting slider 7 is made slightly wider than the diameter (Ф) of the shaft 9, and the width t2 of the up-and-down connection part 7b. ) Is shorter than the width t3 of the slide hole (10), the interval obtained by subtracting the width (t2) of the connecting portion (7b) from the width (t3) of the slide hole (10) is the left and right slide opening and closing width of the valve seat (8) It should be about.

상기 밸브시트(8)는 밸브몸체(2)상에 형성된 유체통수공(3)의 일측으로 고정된 가이드링 일체형으로 이루어진 버퍼(11)상으로 축봉(9)을 스프링(12)으로 탄력지지되도록 결합하여 밸브시트(8)가 디스크가이더(13)상에 탄력 연접되면서 유체 압력에 따라 밸브시트(8)가 유체통수공(3)을 개방 내지는 폐쇄토록 되어 있다.The valve seat 8 is elastically supported by the spring 12 to the shaft (9) on the buffer (11) made of a guide ring integrally fixed to one side of the fluid passage 3 formed on the valve body (2) In combination, the valve seat 8 is elastically connected on the disk guider 13 so that the valve seat 8 opens or closes the fluid passage hole 3 according to the fluid pressure.

도면중의 부호 14는 핸들 설치용 고정캡, 15는 고정너트, 16은 승강슬라이더(7)를 승강 시 안내하는 가이더, 17은 숫나사, 18은 암나사를 도시한 것이다.In the drawings, reference numeral 14 denotes a fixed cap for installing a handle, 15 a fixing nut, 16 a guider for lifting and lowering the lifting slider 7, 17 is a male screw, and 18 is a female screw.

상기와 같이 구성될 수 있는 본 발명의 콘트롤 체크 밸브(1)는 일반적으로 체크 밸브의 기능을 요할 경우에는 핸들(4)을 중립 상태로 두고, 강제적으로 개방이나 폐쇄를 원할 시에는 개방, 폐쇄위치로 핸들(4)을 회전시켜 밸브(1)를 사용자가 원하는 위치로 설정하여 유체의 공급여부를 임의 단속할 수 있는 것인바, 이의작용 등에 대하여 이하에 보다 상세히 설명키로 한다.The control check valve 1 of the present invention, which can be configured as described above, generally requires the handle 4 to be in a neutral state when a function of the check valve is required, and an open or closed position when a forced opening or closing is desired. By rotating the furnace handle 4, the valve 1 can be set to a desired position by the user to arbitrarily control whether the fluid is supplied, and the action thereof will be described in more detail below.

밸브(1)의 핸들(4)을 중립상태에 두게 되면, 핸들(4)의 축(4a) 하단부에 연결된 승강슬라이더(7)가 슬라이드공(10)의 중간에 위치하게 된다.(도 2 참조)When the handle 4 of the valve 1 is placed in the neutral state, the lifting slider 7 connected to the lower end of the shaft 4a of the handle 4 is positioned in the middle of the slide hole 10 (see FIG. 2). )

이때 축봉(9)과 연결되어 유체통수공(3)을 폐쇄하고 있는 밸브시트(8)는 유체 압력에 따라 유체통수공(3)상에서 좌우로 슬라이드 운동하여 개폐가 자동으로 이루어지게 되어 일반적인 체크 밸브와 동일한 상태로 기능을 하게 되며, 이때 승강슬라이더(7)는 축봉(9)의 슬라이드공(10)상에 연결부(7b)만 개재된 상태에서 연결부(7b)의 도면상 우측단부 까지는 축봉(9)이 좌측으로 슬라이드 이동이 가능하여 밸브시트(8)가 받는 유체의 압력에 따라 슬라이드 개폐작동이 이루어지는 것이다.At this time, the valve seat 8, which is connected to the shaft rod 9 and closes the fluid passage 3, slides from side to side on the fluid passage 3 according to the fluid pressure to automatically open and close the check valve. And the same function, the lifting slider (7) is the shaft (9) up to the right end in the drawing of the connecting portion (7b) in the state where only the connecting portion (7b) on the slide hole (10) of the shaft (9) ) Slides to the left side, the slide opening and closing operation is performed according to the pressure of the fluid received by the valve seat (8).

그리고 핸들(4)을 돌려 잠금 상태로 전환시키면 승강슬라이더(7)가 하강하면서 승강슬라이더(7)의 상측 경사면이 축봉(9)의 슬라이드공(10) 상부 경사면(10a)에 접하게 되는 바, 이와 같은 상태에서는 유체의 압력이 밸브시트(8)에 가해지더라도 상기 밸브시트(8)와 연결된 축봉(9)이 상하 슬라이더(7)에 의해 도면(도 1 참조)상 좌측으로 슬라이드 이동이 불가능한 상태에 있게 되어 밸브는 잠금상태를 유지하게 되는 것이다.When the handle 4 is turned to the locked state, the lifting slider 7 descends while the upper inclined surface of the lifting slider 7 comes into contact with the upper inclined surface 10a of the slide hole 10 of the shaft 9. In the same state, even if the pressure of the fluid is applied to the valve seat 8, the shaft rod 9 connected to the valve seat 8 cannot slide to the left on the drawing (refer to FIG. 1) by the upper and lower sliders 7. The valve will remain locked.

그리고 핸들(4)을 돌려 개방상태로 전환시키면 승강슬라이더(7)가 상승하면서 승강슬라이더(7)의 하측 경사면이 축봉(9)의 슬라이드공(10) 하부 경사면(10a)에 접하면서 상승하게 되므로 축봉(9)을 도면(도 3 참조)상 좌측으로 슬라이드 이동 시키게 되고, 그로 인하여 축봉(9)과 연결된 밸브시트(8)가 좌측으로 개방상태를 유지하게 되는 것이다.When the handle 4 is turned to the open state, the lifting slider 7 rises while the lower inclined surface of the lifting slider 7 comes in contact with the lower inclined surface 10a of the slide hole 10 of the shaft 9. The shaft 9 is slid to the left on the drawing (see FIG. 3), and the valve seat 8 connected to the shaft 9 is kept open to the left.

이상에서 상세히 살펴 본 바와 같이 본 발명에서 제공하는 콘트롤 체크 밸브(1)는 각종 유체를 단속할 수 있는 일반적인 스모랜스키 체크 밸브 기능에 유체를 강제적으로 개폐할 수 있는 수단을 부가적으로 설치하여, 유체가 밸브시트(8)에서 고착화되는 현상을 미연에 예방할 수 있고, 그로 인하여 밸브 개폐 작동상의 문제점을 일소할 수 있을 뿐만 아니라 밸브시트(8)의 개방 정도에 따라 유체의 이송량 조절은 물론 일반 밸브 기능을 제공하며,As described in detail above, the control check valve 1 provided in the present invention additionally includes means for forcibly opening and closing the fluid in a general Smoransky check valve function capable of intermitting various fluids. The phenomenon that the fluid is fixed in the valve seat (8) can be prevented in advance, thereby not only can eliminate the problem of opening and closing the valve, but also to adjust the flow amount of the fluid according to the opening degree of the valve seat (8) as well as the general valve Function,

선택적으로 체크 밸브 기능 및 강제 개폐 작동이 가능하여 다양한 유체 이송분야에 호환성 있게 사용될 수 있고,Optional check valve function and forced open / close operation make it compatible with various fluid transfer applications.

체크 밸브가 기능을 상실했을 시에 밸브를 폐쇄작동으로 전환시킨 후 누수없이 매립조치 할 수 있는 등 그 기대되는 효과가 다대한 발명이다.When the check valve loses its function, the present invention has a great effect such that the valve can be closed and then landfilled without leakage.

Claims (2)

유체 압력에 따라 유체통수공(3)상에서 개폐될 수 있는 체크 밸브 기능과 인위적으로 유체통수공(3)을 개폐할 수 있도록 밸브시트(8)는 밸브몸체(2)상에 형성된 유체통수공(3)의 일측으로 고정된 가이드링 일체형으로 이루어진 버퍼(11)상으로 축봉(9)이 스프링(12)으로 탄력지지되도록 결합되며, 상기 밸브시트(8)가 디스크가이더(13)상에 탄력연접되면서 유체 압력에 따라 밸브시트(8)가 유체통수공(3)을 개방 내지는 폐쇄토록 구성된 콘트롤 체크 밸브(1)에 있어서;The valve seat 8 has a fluid flow hole formed on the valve body 2 so as to open and close the fluid flow hole 3 artificially with a check valve function that can be opened and closed on the fluid flow hole 3 according to the fluid pressure. 3) The shaft rod 9 is coupled to the spring 11 to be elastically supported on the buffer 11 formed of a guide ring integrally fixed to one side, and the valve seat 8 is elastically connected on the disc guider 13. In the control check valve (1) configured to open or close the fluid through hole (3) in accordance with the fluid pressure; 상기 유체통수공(3)이 형성되는 밸브 몸체(2)상에는 유체통수공(3)과 직교하는 방향에서 축(4a) 결합되는 핸들(4) 하단의 연결플랜지(5)는 결합공(6)과 연결부(7b)를 가진 개략 크랭크형의 승강슬라이더(7)와 연결하고,On the valve body 2 in which the fluid flow hole 3 is formed, the connection flange 5 at the bottom of the handle 4 coupled to the shaft 4a in a direction orthogonal to the fluid flow hole 3 is a coupling hole 6. Connecting with a roughly crank-type lifting slider 7 having a connecting portion 7b, 상기 승강슬라이더(7)는 좌우 단부에는 경사면(7a)을 형성하여 밸브시트(8)와 연결된 축봉(9)에 상하로 관통 형성되며 좌우에 경사면(7a)에 대응하는 경사면(10a)을 가진 슬라이드공(10)에 결합시켜 밸브시트(8)의 개폐를 임의 단속할 수 있도록 한 것을 특징으로 하는 콘트롤 체크 밸브.The lifting slider 7 is formed with an inclined surface 7a at the left and right ends thereof, and is formed to penetrate up and down through the shaft rod 9 connected to the valve seat 8, and has a inclined surface 10a corresponding to the inclined surface 7a at left and right sides. Control check valve, characterized in that coupled to the ball (10) to arbitrarily control the opening and closing of the valve seat (8). 제 1 항에 있어서;The method of claim 1; 상기 승강슬라이더(7)상에 형성되는 좌우 경사면(7a) 상간의 상하 연결부(7b) 간격(t1)은 축봉(9)의 직경(φ) 보다 약간 넓게 하고, 상하 연결부(7b)의 폭(t2)은 슬라이드공(10)의 폭(t3) 보다 짧게 형성한 것을 특징으로 하는 콘트롤 체크 밸브.The distance t1 between the upper and lower connecting portions 7b of the upper and lower inclined surfaces 7a formed on the lifting slider 7 is slightly wider than the diameter φ of the shaft 9, and the width t2 of the vertical connecting portions 7b. ) Is a control check valve, characterized in that formed shorter than the width t3 of the slide hole (10).
KR1020030083081A 2003-11-21 2003-11-21 A control check valve KR100578152B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020030083081A KR100578152B1 (en) 2003-11-21 2003-11-21 A control check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020030083081A KR100578152B1 (en) 2003-11-21 2003-11-21 A control check valve

Publications (2)

Publication Number Publication Date
KR20030096152A true KR20030096152A (en) 2003-12-24
KR100578152B1 KR100578152B1 (en) 2006-05-15

Family

ID=32389495

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020030083081A KR100578152B1 (en) 2003-11-21 2003-11-21 A control check valve

Country Status (1)

Country Link
KR (1) KR100578152B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101294673B1 (en) * 2010-08-16 2013-08-09 국방과학연구소 Automatic shut valve for rapid transfer of flow in hydraulic cirrcuit
KR20190037743A (en) * 2017-09-29 2019-04-08 현대위아 주식회사 Check valve with throttle function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101294673B1 (en) * 2010-08-16 2013-08-09 국방과학연구소 Automatic shut valve for rapid transfer of flow in hydraulic cirrcuit
KR20190037743A (en) * 2017-09-29 2019-04-08 현대위아 주식회사 Check valve with throttle function

Also Published As

Publication number Publication date
KR100578152B1 (en) 2006-05-15

Similar Documents

Publication Publication Date Title
CA2556382C (en) Bath drain closure assembly
US3765455A (en) Flexible spout operated faucet
KR200355151Y1 (en) A opening and closing switch structure for valve-pin control of gas cylinder
KR100954212B1 (en) Vacuum gate valve
KR101589625B1 (en) Cock for a directly water purifier and cold and heat waterer use of a magnetic valve
KR20090027623A (en) Anti-siphon device for a flush valve
KR100578152B1 (en) A control check valve
KR100738973B1 (en) The minuteness flux control valve
KR101321592B1 (en) valve for improving airtightness efficiency
US10920406B2 (en) Leak-proof device for water inlet valve
KR20130120171A (en) A double disk gate valve
JP7109591B2 (en) Discharge valve structure and humidifier provided with the same
KR20130121988A (en) Valve assembly
CN208619720U (en) The adjustable pressing spool of flow
KR100771132B1 (en) Bonneted type double knife gate valve
US10883612B2 (en) Control valve having hollow piston for controlling flow of fluid
KR20080091307A (en) A gate valve
KR102011931B1 (en) Gate Valve
CN216643091U (en) Stop check valve with locking function
CN216895129U (en) Zero-leakage proportional overflow valve
US11268619B2 (en) Sealing arrangement
CN214789115U (en) Elastic seat seal gate valve capable of being opened and closed quickly
CN208348543U (en) Regulating flow quantity presses spool
KR200348821Y1 (en) Needle valve
KR102008502B1 (en) Pressure reducing valve assembly with lifting adjustable of pressure reduction

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
N231 Notification of change of applicant
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20120503

Year of fee payment: 7

LAPS Lapse due to unpaid annual fee