JP5308387B2 - Gas shut-off valve device - Google Patents

Description

  The present invention relates to a gas shut-off valve device that is provided in the middle of a gas pipe or the like and can shut off gas supply in an emergency.

  Conventionally, gas pipes for transferring gas have been widely used in medical facilities such as factories, school laboratories, and hospitals. For example, in medical facilities such as hospitals, gas pipes for transferring various medical gases such as oxygen gas from the supply device to each room such as a ward room and an operating room in each ward are arranged. The gas piping is provided with a gas shut-off valve device for shutting off or opening the gas supply. In particular, with regard to medical piping equipment used in medical facilities, JIS T 7101 determines that an area-specific shut-off valve is provided on each floor of a building. Area-specific shut-off valves branch from the main piping that supplies gas to each floor of the building, and are installed in the middle of the gas piping that supplies gas to operating rooms and general hospital rooms. Used for the purpose of separating. It is preferable to use a valve member that can quickly and easily open and close the gas flow path formed in the gas pipe in the gas cutoff valve device used for such a zone-specific cutoff valve.

  2. Description of the Related Art In a gas cutoff valve device used as a zone-specific cutoff valve, a ball valve has been widely used as a valve member for opening and closing a gas flow path. A gas shut-off valve device using a ball valve is generally configured as shown in FIG. FIG. 7 is a cross-sectional view showing a schematic configuration of a gas cutoff valve device used as a conventional example. The gas shut-off valve device 101 is configured by mounting and fixing a ball valve 104 in a casing 103 having a lid 102 attached to the front surface. In the ball valve 104, a spherical ball valve body 106 is disposed in an annular body 105 in which a gas flow path is formed. In the ball valve body 106, a spherical body 106a formed of a metal such as stainless steel is formed with a flow passage hole 106b penetrating the inside. The ball valve body 106 includes an open position where the position of the flow path hole 106b coincides with the position of the flow path and allows gas flow inside the body 105, the position of the flow path hole 106b, and the position of the flow path. Are arranged so as to be able to rotate between the closed positions where the gas flows are blocked and the gas flow is blocked. Further, the ball valve body 106 has a shaft member 107 formed to extend upward in the vertical direction with respect to the ball valve body 106, and an operation handle 108 is attached to the shaft member 107. (For example, Non-Patent Document 1).

  The normal ball valve 104 is configured such that the ball valve body 106 is positioned in the open position when the operation handle 108 is oriented in the same direction as the gas flow path formed in the body 105, and the shaft member 107 is When the operation handle 108 is rotated 90 degrees to the center and the operation handle 108 is orthogonal to the direction of the gas flow path, the ball valve body 106 is also rotated 90 degrees from the open position in accordance with the rotation operation of the operation handle 108. It is configured to be in the closed position. In addition to the ball valve 104 that is manually opened and closed by the operation handle 108, the ball valve 104 may be opened and closed by using a pneumatic actuator or the like.

KITZ ball valve general catalog [online], [Search April 15, 2009], Internet <URL http://www.kitz.co.jp/product/pdf/prant/J-201-42.pdf >

  However, the conventional gas shut-off device 101 is provided so that the shaft member 107 of the ball valve 104 extends upward in the vertical direction. Therefore, the operation handle 108 rotates in the horizontal direction around the shaft member 107, and when the ball valve body 106 is rotated 90 degrees from the open position to the closed position, a part of the operation handle 108 moves out of the housing 102. Invite the situation to protrude. For this reason, the conventional gas shut-off device 101 may cause injuries when a person such as a patient or a nurse who frequently travels in the passage where the gas shut-off valve device 102 is installed hits or gets caught by the operation handle. there were. Further, if the operation handle 108 is rotated by hitting the operation handle or the like, the ball valve body 106 is also rotated, so that the gas is erroneously supplied to a place where the supply of gas is cut off. There was also a risk of triggering.

  Such a problem is that the enlarged housing 103 is fixedly attached to the wall W so that a part of the operation handle 108 does not protrude out of the housing 103 even when the ball valve body 106 is in the closed position. Alternatively, it is conceivable that the lid 102 can be closed by thickening the wall W to ensure the embedding depth of the housing 103. However, when the enlarged casing 103 is attached and fixed to the wall W, the casing 103 is further protruded toward the passage side, so that there is a problem that patients, nurses, and the like are more likely to collide with each other. Further, when the wall W is thickened to ensure the embedded depth of the housing 103, the problem of the housing 103 protruding is solved, but in this case, the wall needs to be designed to be thicker than necessary. For this reason, there is a possibility that the passage may be narrowed as a whole, and there arises a problem that it is difficult to guide a patient or the like by an appropriate method in an emergency or the like. Also, depending on the facility, it may not be possible to thicken the wall, so thickening the wall cannot be an appropriate solution. In addition, when the ball valve 104 is used as an area-specific shut-off valve, the ball valve body 106 is often closed temporarily such as in an emergency, and the housing 103 is used for temporary treatment. It is uneconomical to increase the size and the thickness of the wall W.

  Further, in the conventional gas shut-off valve device 101, it is difficult to identify whether the ball valve body 106 is in the open position or the closed position unless the structure of the ball valve 104 is known. And the open / closed state of the ball valve body 106 are not always clear, and there is a risk of causing an erroneous operation when the ball valve body 106 is opened / closed.

  The present invention has been made to solve the above-described problems, and provides a gas shut-off valve device in which an operation handle does not protrude from a housing and an open / close state of a ball valve body can be easily identified. The purpose is to provide.

The present invention
(1) A ball valve body that is rotatable between an open position that opens a gas flow path and a closed position that closes the gas flow path, and is attached to a rotation shaft of the ball valve body. An operation handle for opening and closing a path, and the operation handle is attached to the rotating shaft so as to rotate on a vertical plane parallel to the gas flow path, and an open display unit; and a closed display unit, open the display unit is exposed when in the position the operating handle to open the ball valve body, the closed display unit is exposed from the operating handle when in the operating handle closes the ball valve element position A gas shut-off valve comprising: an open / close display member pivotally supported in parallel with the operation handle and rotatably attached to the operation handle so as to rotate on a plane parallel to the vertical plane. apparatus,
(2) The opening / closing display member is configured such that the center of gravity is positioned below the vertical direction with respect to the attachment portion to the operation handle, and either the open display portion or the closed display portion is always positioned below. (1) The gas shut-off valve device according to
(3) The operation handle positions the ball valve body in the open position when positioned in a direction parallel to the direction of the gas flow path, and places the ball valve body in the closed position when positioned in a direction perpendicular to the direction of the gas flow path. The open / close display member is opened when the operation handle is positioned in a direction parallel to the direction of the gas flow path, and the operation handle is in a direction perpendicular to the direction of the gas flow path. The gas shut-off valve device according to (1) or (2), wherein the closed display portion is exposed when positioned
(4) The gas shut-off valve device according to any one of (1) to (3), wherein the open / close display member has an open display portion and a closed display portion formed on the same surface,
(5) The open / close display member is formed in a “<” shape having an extension part (A) and an extension part (B), and the extension part (A) has a closed display part. The gas cutoff according to any one of (1) to (4), wherein the extension part (B) has an open display part, and a weight is attached to the back side of the extension part (B). Valve device,
(6) A housing that houses at least a ball valve body, an operation handle, and an open / close display member, and a lid body that is attached to the front surface side of the housing, wherein the operation handle has a ball valve A first window portion for visually recognizing an open display portion that is displayed when the body is in an open position, and a second window for visually recognizing a closed display portion that is exposed when the operation handle is in a position for closing the ball valve body A gas cutoff valve device according to any one of the above (1) to (5),
Is the gist.

  According to the present invention, since the operation handle is attached to the rotating shaft of the ball valve body so as to rotate on a vertical plane parallel to the gas flow path, the ball valve body is rotated by operating the operation handle. However, the operation handle can be prevented from protruding from the housing. Therefore, it is possible to effectively prevent injuries and erroneous gas supply caused by a patient, a nurse, or the like hitting or getting caught on the operation handle.

  Further, according to the present invention, there is an open display portion and a closed display portion, and when the operation handle is in a position to open the ball valve body, the open display portion is exposed, and the operation handle is a position to close the ball valve body. In order to display the closed display part from the operation handle when it is, the open / close display member pivotally attached to the operation handle is provided, so that either the open display part or the closed display part is exposed from the operation handle. It is possible to identify at a glance whether the ball valve body is in the open position or the closed position. Therefore, the present invention makes it possible for the operator to easily check the open / closed state of the ball valve body, to quickly and reliably perform the opening / closing operation of the operation handle, and to effectively prevent erroneous operation. It becomes possible to prevent.

It is a front view showing the appearance composition of the gas cutoff valve device concerning an embodiment of the invention. It is a gas shut-off valve device in a state where a lid is removed, and is a front view showing a state in which an operation handle is located at a position where a ball valve body is opened. It is AA sectional drawing in FIG. (A) is the partial exploded perspective view which represented the attachment structure of the operation handle and the opening / closing display member from the front side. (B) is the partial exploded perspective view which represented the attachment structure of the operation handle and the opening / closing display member from the back side. FIG. 6 is a front view showing the gas shut-off valve device with the lid removed, in which the operation handle is positioned between the position where the ball valve body is opened and the position where the ball valve body is closed. It is a gas shut-off valve device in a state where a lid is removed, and is a front view showing a state where an operation handle is located at a position where a ball valve body is closed. It is sectional drawing showing schematic structure of the conventional gas cutoff valve apparatus.

  A gas cutoff valve device according to an embodiment of the present invention will be described with reference to FIGS. In this specification, a gas shut-off valve device used in a medical facility such as a hospital will be described as an example. However, the gas shut-off valve device of the present invention is not limited to this, for example, an education such as a university You may apply to gas supply equipment, such as an engine and a factory. Further, in this specification, the gas shut-off valve device is described as being used by being embedded in a wall. However, the gas shut-off valve device may be applied to a wall mounted and fixed on a wall.

  As shown in FIGS. 1 to 2, the gas shut-off valve device 1 of the present embodiment is detachably attached to a ball valve 2, an operation handle 3, a housing 4 for storing them, and a front side of the housing 4. The lid 5 is provided. The ball valve 2 includes a body 6 and a ball valve body 7 (see FIG. 3). The body 6 is a tubular member made of metal such as copper, and a gas flow path is formed inside. Both ends of the body 6 are connected by connecting fittings 8a and 9a such as nuts provided in gas pipes 8 and 9 forming a part of the gas flow path. In the present embodiment, an example in which the gas flows into the ball valve 2 from the pipe 8 side and flows out to the pipe 9 side will be described. However, the gas flows from the pipe 9 to the pipe 8. You may do it. Hereinafter, the side on which the gas flows into the ball valve 2 is referred to as “upstream side”, and the side on which the gas flows out from the ball valve 2 is referred to as “downstream side”.

The ball valve body 7 is a member formed in a spherical shape with a metal such as stainless steel, and has a linear flow path hole 7a formed therethrough as shown in FIG. This ball valve body 7 is formed in the body 6 so that the position of the flow path hole 7a coincides with the position of the gas flow path formed in the gas pipes 8 and 9, and the gas flowing in from the upstream side flows to the downstream side. An open position that allows the outflow, and a closed position that blocks the outflow of the gas flowing in from the upstream side to the downstream side because the position of the flow path hole 7a and the position of the gas flow path in the pipes 8 and 9 do not match. It is stored and arranged so that it can rotate between the two. When the ball valve body 7 is located at the open position, the flow path hole 7a constitutes a gas flow path together with the gas pipes 8 and 9, and the gas flow path at this time includes an upstream side. A medical gas such as oxygen gas flows toward the downstream side.

  Further, the ball valve body 7 is formed with a shaft member 10 as a rotation shaft extending from the ball valve body 7 in a direction orthogonal to the direction of the gas flow path. It is arranged so that it can rotate within a range of 90 degrees. The shaft member 10 is disposed so as to rotate about an axis L1 that is perpendicular to the opening surface of the housing 4, in other words, parallel to the horizontal line. An operation handle 3 is attached to the tip of the shaft member 10, and the ball valve body 7 is rotated by rotating around the axis L1 as the attached operation handle 3 rotates. ing.

  The operation handle 3 is rotatably attached to the shaft member 10 so as to rotate on a vertical plane parallel to the gas flow path, and for opening and closing the gas flow path by rotating the ball valve body 7. belongs to. In the present embodiment, the operation handle 3 is formed of a flat bar-like metal member, but the material and shape of the operation handle are not limited thereto. One end of the operation handle 3 is attached to the tip of the shaft member by various methods such as screwing. Further, the operation handle 3 is interlocked with the ball valve body 7 via the shaft member 10. When the operation handle 3 is rotated, the ball valve body 7 is also connected via the shaft member 10. It is designed to rotate.

  In the following, the position of the operation handle 3 when the ball valve body 7 is in the open position is referred to as the “position for opening the ball valve body”, and the position of the operation handle 3 when the ball valve body 7 is in the closed position. Is referred to as the “position to close the ball valve”. In the present embodiment, the “position where the ball valve body is opened” refers to a position where the tip of the other end side of the operation handle 3 faces the downstream side in the horizontal direction when the gas cutoff valve device is viewed from the front (see FIG. 3 is a position where the tip of the other end side of the operation handle 3 is directed downward in the vertical direction when the gas shut-off valve device 1 is viewed from the front (see FIG. 3). 6). The direction of the operation handle only needs to be determined in accordance with the opening / closing of the ball valve body 7, and the opening / closing state of the ball valve body and the direction of the operation handle do not have to have the relationship described above.

A through hole 3 a is formed in the operation handle 3 at a position separated from the axis center of the shaft member 10 by a distance L. The through hole 3a is a hole for attaching the opening / closing display member 12 to the back side of the operation handle 3, and is formed in a size that allows the screw 13 to be inserted. The open / close display member 12 is a member for displaying whether the ball valve element 7 is in the open position or the closed position, and can be rotated by the operation handle 3 as shown in FIG. A mounting hole 12a for mounting is formed. In the present embodiment, the open / close display member 12 is formed in a “<” shape, and extends in the timepiece 3 o'clock direction (hereinafter referred to as the horizontal direction) around the attachment hole 12a. A part (A) 12b and an extending part (B) 12c extending in the direction of 6 o'clock (hereinafter referred to as a vertical direction) around the mounting hole 12a are provided. The extension part (A) 12b and the extension part (B) 12c are formed so that the angle formed between the extension part (A) 12b and the extension part (B) 12c is 90 degrees, The mounting hole 12a is formed at a position where the open / close display member 12 bends from the horizontal direction to the vertical direction. Further, the open / close display member 12 has an open display portion 12d on which a letter “open” indicating that the ball valve body 7 is in the open position is written at the tip of the extension portion (B) 12c. At the leading end of the protruding portion (A) 12b, there is a closed display portion 12e on which characters “CLOSE” indicating that the ball valve element 7 is in the closed position are written. The open display portion 12d and the closed display portion 12e are configured such that the open display portion 12d is positioned vertically below the mounting hole 12a and the closed display portion 12e is positioned horizontally with respect to the mounting hole 12a. ing. Moreover, as shown in FIG.4 (b), the weight 15 is attached to the back surface side to the opening-and-closing display member 12, and a gravity center is located in the vertical direction lower side rather than the attachment hole 12a.

  In the open / close display member 12 configured in this manner, a screw 13 is inserted into the through hole 3a of the operation handle 3 and the mounting hole 12a of the open / close display member 12 from the surface side of the operation handle 3, and a nut 14 is inserted into the screw 13. Are attached to the back side of the operation handle 3 so as to be freely rotatable. At this time, since the center of gravity of the open / close display member 12 is positioned lower than the mounting hole 12a in the vertical direction by the action of the weight 15, the open display portion 12d is always positioned below and the ball valve body 7 is opened. When the operation handle 3 is present, the closed display portion 12e is hidden by the operation handle 3, and the open display portion 12d is exposed. When the operation handle 3 is at a position where the ball valve body 7 is closed, the open display portion 12d is hidden by the operation handle 3 and the closed display portion 12e is exposed.

  Note that the opening / closing display member 12 may be attached to the operation handle 3 by a method other than screwing, for example, by a pin or a rivet. Other methods may be used.

  The housing 4 is a box-shaped member for housing the ball valve 2 and the operation handle 3. The housing 4 is formed so that the front side is open, and a lid 5 is detachably attached so as to cover the opening. The lid 5 is attached so as to cover the front side of the housing 4. The lid body 5 is formed so that the side sectional shape is gently curved, and a first window portion 16 and a second window portion 17 are formed on the front surface. The first window portion 16 is for making the open display portion 12d of the open / close display member 12 visible from the outside when the operation handle 3 is at a position where the ball valve body 7 is opened. It is formed in a size that can be clearly seen. The second window portion 17 is provided so that the closed display portion 12e of the open / close display member 12 can be visually recognized from the outside when the operation handle 3 is in a position where the ball valve body 7 is closed. The portion 12e is formed in a size that can be clearly seen.

  The first window portion 16 and the second window portion 17 may be of a size that can be visually recognized by the open display portion 12d or the closed display portion 12e, and the sizes of the windows may be the same or different. Further, the first window portion 16 and the second window portion 17 may be attached with a transparent plate-like member such as glass, or may be an opening. In the present embodiment, the open display portion 12 d can be visually recognized from the first window portion 16, and the closed display portion 12 e can be visually recognized from the second window portion 17.

  The casing 4 is provided with holes (not shown) large enough to allow gas pipes to be inserted into two places on the upper surface, and the gas pipes 8 and 9 are guided into the casing 4 through these holes. It has become so. For such a casing 4, for example, a metal such as aluminum is used, but other metals may be used. Further, it may be other than metal, and for example, a resin material or the like may be used. The reference numeral 11 shown in FIGS. 1 and 2 is a pressure gauge that displays the gas pressure in the gas flow path.

  As shown in FIG. 3, the housing 4 is embedded in the wall W, and is arranged so that the lid 5 is exposed from the wall W. The lid 5 is detachably attached to the housing 4 as described above. In addition, the ball valve 2 housed inside the housing 4 is interposed via a pedestal so that the shaft member 10 is parallel to the horizontal plane or has an axis L1 perpendicular to the opening surface of the housing 4. Arranged. That is, when the gas shut-off valve device 1 is viewed from the front, the operation handle 3 is positioned so as to face in the horizontal direction when the ball valve body 7 is in the open position, and the ball valve body 7 is in the closed position. When located, it is located so as to face downward in the vertical direction. Further, the gas shut-off valve device 1 of the present embodiment can prevent the operation handle 3 from protruding the housing 4 from the housing 4 even when the ball valve body 7 is located at the closed position. Even when the body 2 is positioned at the closed position, the lid 5 can be easily closed.

  Next, the operation of the gas cutoff valve device of the present embodiment will be described. As shown in FIG. 1, the gas shut-off valve device 1 as an area-specific shut-off valve disposed in a medical facility such as a hospital normally has a ball valve body 7 in an open position so that gas flows through a gas flow path. It has become. Further, the operation handle 3 is located at a position where the ball valve body 7 is opened.

  At this time, the open / close display member 12 attached to the operation handle 3 and having the weight 15 attached to the open display portion 12d side is screwed and fixed in the attachment hole 12a. Therefore, the open / close display member 12 has the center of gravity positioned below the mounting hole 12a in the vertical direction, the open display portion 12d is always positioned below, the closed display portion 12e is hidden behind the operation handle 3, and the open display portion 12d is expressed from the operation handle 3. Therefore, normally, the characters “open” attached to the open display portion 12d can be visually recognized through the first window portion 16, and the characters “close” are not displayed on the second window portion 17. It can be easily identified that the operation handle 3 is at a position where the ball valve body 7 is opened and that the ball valve body 7 is in the open position.

  Next, the case where the operation handle 3 is rotated from the position where the ball valve body 7 is opened to the position where the ball valve body 7 is closed will be described. FIG. 5 is a front view illustrating a state in the middle of rotating the operation handle 3 from the position where the ball valve body 7 is opened to the position where the ball valve body 7 is closed to rotate the ball valve body 7 from the open position to the closed position; FIG. 6 is a front view showing the relationship between the operation handle 3 and the opening / closing display member 12 when the operation handle 3 is positioned at the position where the ball valve body 7 is closed.

  In the case shown in FIG. 5, the lid 5 is removed from the housing 4, and the operation handle 3 is rotated from the position where the ball valve body 7 is opened toward the position where the ball valve body 7 is closed. At this time, since the operation handle 3 rotates about the axis L1 of the shaft member 10, the ball valve body 7 rotates from the open position to the closed position, and a part of the operation handle 3 does not protrude from the housing 4. The lid 5 can be attached to the housing 4.

  Further, as shown in FIG. 5, when the gas shut-off valve device 1 is viewed from the front, both the open display portion 12d and the closed display portion 12e are operated when the operation handle 3 is rotated obliquely downward 45 degrees. Depending on the handle 3, the open display portion 12 d and the closed display portion 12 e are both partially visible, without being hidden. When the lid 5 is closed in this state, both the open display portion 12d and the closed display portion 12e are located at positions where they cannot be visually recognized through the first window portion 16 and the second window portion 17. Become.

  As shown in FIG. 6, when the operation handle 3 is rotated to a position where the ball valve body 7 is closed, the operation handle 3 is positioned so as to face the lower side in the vertical direction with respect to the shaft member 10. In this case, the open display portion 12d is hidden behind the operation handle 3, and the closed display portion 12 is exposed from the operation handle 3. Therefore, when the operation handle 3 is rotated to the position where the ball valve body 7 is closed, when the lid body 5 is attached to the housing 4, the “closed” attached to the closed display portion 12 e via the second window portion 17 is provided. ”Can be visually recognized, and the“ open ”character is not displayed on the first window portion 16, so that the operation handle 3 is in the position where the ball valve body 7 is closed, and the ball valve body 7 is in the closed position. It can be easily identified.

  As described above, according to the present invention, even if the operation handle 3 is operated, the operation handle 3 does not protrude from the housing 4, so that the operation handle 3 is rotated to the position where the ball valve body 7 is closed. The lid 5 can be reliably closed later. Therefore, even when the operation handle 3 is in a position where the ball valve body 7 is closed, it is possible to prevent the nurse or patient from being caught by the operation handle 3 and inducing injury.

  Further, in the gas shut-off valve device 1 of the present embodiment, since the opening / closing display unit 12 is rotatably provided on the operation handle 3, the operator can connect via the first window unit 16 or the second window unit 17. Alternatively, by directly observing the letters “open” or “closed” displayed from the operation handle 3, it is possible to clearly know whether the ball valve body 7 is in the open position or the closed position. become.

  The display method in the open display unit 12d and the closed display unit 12e in the present embodiment may be any method that can identify whether the ball valve element 7 is in the open position or the closed position. "Or" closed "may be used, or symbols other than letters may be used. Further, the shape and color of characters for identifying the open position or the closed position can be used as appropriate. For example, it is only necessary that the operator can identify the open / closed state of the ball valve body at a glance, such as “open” is green and “close” is red.

  In addition, the gas shutoff valve device in the present embodiment has a configuration in which the lid can be removed from the housing. For example, the lid can be opened and closed with respect to the housing by a hinge or the like. The body may be attached to the housing. In addition, the gas shut-off valve device of the present embodiment includes a housing and a lid, but the housing is not always necessary. For example, a concave portion is provided on the wall surface and a ball valve or the like is disposed, You may attach a cover body directly to a wall surface so that a part may be covered.

  In addition, the gas shut-off valve device in the present embodiment is configured to attach a weight so as to lower the position of the center of gravity with respect to the mounting hole in the open / close display member, but the structure for lowering the position of the center of gravity attaches the weight. Other methods may be used. For example, in the open / close display member, the center of gravity may be lowered by increasing the thickness of the portion of the open display portion, or the center of gravity may be lowered by increasing the size of the open display portion. Other methods may also be used.

DESCRIPTION OF SYMBOLS 1 Gas shut-off valve apparatus 2 Ball valve 3 Operation handle 4 Case 5 Cover body 7 Ball valve body 10 Shaft member 12 Opening / closing display member 12a Mounting hole 12d Opening display part 12e Closed display part 15 Weight 16 First window part 17 Second window Part

Claims (6)

A ball valve body rotatable between an open position for opening the gas flow path and a closed position for closing the gas flow path;
In a gas shut-off valve device comprising: an operation handle attached to a rotation shaft of the ball valve body, and rotating and opening the gas flow path by rotating the ball valve body;
The operation handle is attached to the rotating shaft so as to rotate on a vertical plane parallel to the gas flow path,
It has an open display part and a closed display part. When the operation handle is in a position to open the ball valve body, the open display part is exposed, and when the operation handle is in a position to close the ball valve body, it is closed from the operation handle. And an opening / closing display member that is pivotally attached to the operation handle so as to rotate on a surface parallel to the vertical surface. Gas shut-off valve device.   The opening / closing display member is configured such that the center of gravity is positioned below the vertical direction with respect to the attachment portion to the operation handle, and either the open display portion or the closed display portion is always positioned below. Gas shut-off valve device.   The operation handle positions the ball valve body in the open position when positioned in a direction parallel to the direction of the gas flow path, and positions the ball valve body in the closed position when positioned in a direction perpendicular to the direction of the gas flow path. It is provided in
  The open / close display member is opened when the operation handle is positioned in a direction parallel to the direction of the gas flow path, and the closed display section is exposed when the operation handle is positioned in a direction perpendicular to the direction of the gas flow path. The gas cutoff valve device according to claim 1 or 2, wherein the gas cutoff valve device is configured to do so.   The gas shut-off valve device according to any one of claims 1 to 3, wherein the open / close display member has an open display portion and a closed display portion formed on the same surface.   The open / close display member is formed in a “<” shape having an extension part (A) and an extension part (B), and the extension part (A) has a closed display part. The gas shut-off valve device according to any one of claims 1 to 4, wherein the protruding portion (B) has an open display portion, and a weight is attached to the back surface side of the extending portion (B).   A housing that houses at least a ball valve body, an operation handle, and an open / close display member;
  A lid attached to the front side of the housing,
  In the lid,
    A first window portion for visually recognizing an open display portion that is displayed when the operation handle is in a position to open the ball valve body;
    The gas shut-off valve device according to any one of claims 1 to 5, wherein a second window portion for visually recognizing a closed display portion that is displayed when the operation handle is at a position for closing the ball valve body is formed.

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