JP2000028072A - Branch saddle - Google Patents

Branch saddle

Info

Publication number
JP2000028072A
JP2000028072A JP10196408A JP19640898A JP2000028072A JP 2000028072 A JP2000028072 A JP 2000028072A JP 10196408 A JP10196408 A JP 10196408A JP 19640898 A JP19640898 A JP 19640898A JP 2000028072 A JP2000028072 A JP 2000028072A
Authority
JP
Japan
Prior art keywords
branch
main pipe
curved plate
branch pipe
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP10196408A
Other languages
Japanese (ja)
Inventor
Masato Hioki
真人 日置
Hirotsugu Watabe
裕嗣 渡部
Hideki Bai
秀樹 倍
Hidekazu Enomoto
秀和 榎本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP10196408A priority Critical patent/JP2000028072A/en
Publication of JP2000028072A publication Critical patent/JP2000028072A/en
Pending legal-status Critical Current

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  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To enable the bonding connection even with a branch pipe whose diameter close to a main pipe by providing a branch saddle comprising a curved plate abutted to the outer circumference of the main pipe, an oblong hole opened in a center part of the curved plate, and a branch pipe joint erected from a circumferential edge of the oblong hole. SOLUTION: A branch saddle 1 is placed on an outer circumference of a polyolefin main pipe 2 through a bonding heater, fixed by a band, heat generated and bonded thereto. Then, a drill is inserted from an upper opening of a branch pipe joint part 7 of the branch saddle 1, and an oblong opening along an inner surface of a base part 7a of the branch pipe joint part 7 is drilled in an outer surface of the main pipe to communicate a fluid inside, and a branch pipe is bonded to an end 8 of the branch pipe joint part 7. Since the opening to be drilled in a curved plate 3 is an oblong hole 6, the branched flow rate can be sufficiently ensured while ensuring the adhesive area of the curved plate 3 to the main pipe by increasing the length of the major diameter of the oblong hole 6 even when the opening area of the end 8 is not less than the sectional area of the main pipe.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は分岐サドルに関
し、詳しくはポリエチレンやポリプロピレンなどのよう
なポリオレフィン系樹脂からなるプラスチック管に好適
に使用される分岐サドルに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a branch saddle, and more particularly to a branch saddle suitably used for a plastic pipe made of a polyolefin resin such as polyethylene or polypropylene.

【0002】[0002]

【従来の技術】プラスチック管に分岐管を不断水状態で
接続するための分岐継手として図13に示すような分岐
サドル1が知られている。
2. Description of the Related Art A branch saddle 1 as shown in FIG. 13 is known as a branch joint for connecting a branch pipe to a plastic pipe in a water-free state.

【0003】この分岐サドル1は、主管2と同材質製と
され、主管2外周に当てがわれる湾曲板3と、該湾曲板
3の中央部に開設された円孔より立設された分岐管継手
部4とから形成されており、ポリオレフィン系管の主管
2に分岐管5を接続する場合では、湾曲板3と主管2と
の間に発熱体(図示省略)を介挿して融着一体化し、そ
の後穿孔治具(図示せず)を用いて分岐管に合った径の
開口を分岐管継手部4の開口から主管2に穿設し、次い
で分岐管継手部4に分岐管5を融着接続して用いられ
る。
The branch saddle 1 is made of the same material as the main pipe 2 and has a curved plate 3 applied to the outer periphery of the main pipe 2 and a branch pipe standing upright from a circular hole formed at the center of the curved plate 3. When the branch pipe 5 is connected to the main pipe 2 of the polyolefin-based pipe, a heating element (not shown) is inserted between the curved plate 3 and the main pipe 2 to be fused and integrated. Then, an opening having a diameter suitable for the branch pipe is formed in the main pipe 2 from the opening of the branch pipe joint 4 by using a drilling jig (not shown), and then the branch pipe 5 is fused to the branch pipe joint 4. Used by connecting.

【0004】[0004]

【発明が解決しようとする課題】ところで、一般に、上
記分岐サドル1の湾曲板3の周方向長さLは、主管2の
外周全周Sの1/2以下で、さらに湾曲板3内面に発熱
体(図示省略)を介挿する必要上、分岐管5は主管2と
比較して小口径管としなければならないなどの制約があ
った。
Generally, the circumferential length L of the curved plate 3 of the branch saddle 1 is equal to or less than 1/2 of the entire outer circumference S of the main pipe 2, and the inner surface of the curved plate 3 generates heat. Because of the need to insert a body (not shown), the branch pipe 5 must be smaller in diameter than the main pipe 2.

【0005】従って、主管5と同口径やそれに近い口径
の分岐管を接続するためにはチーズ継手等の継手を使用
しなければならず、主管の断水処置、切断作業など工程
数が著しく増加し、またコストも増大するなどの問題が
あった。
Accordingly, a joint such as a cheese joint must be used to connect a branch pipe having the same diameter or a diameter close to that of the main pipe 5, so that the number of steps such as water-cutting treatment and cutting work of the main pipe is significantly increased. In addition, there were problems such as an increase in cost.

【0006】この発明は上記問題点を解消し、ポリオレ
フィン系管に分岐サドルを使用して分岐管を接続する場
合、主管と同一径かこれに近い径の分岐管であっても分
岐サドルを使用して容易に融着接続を可能にすることを
課題とするものである。
SUMMARY OF THE INVENTION The present invention solves the above problems, and when a branch pipe is connected to a polyolefin pipe using a branch saddle, the branch saddle is used even if the branch pipe has the same diameter as or close to the main pipe. It is an object of the present invention to easily perform fusion splicing.

【0007】[0007]

【課題を解決するための手段】請求項1の分岐サドル
は、主管外周に当てがわれる湾曲板と、該湾曲板の中央
部に軸方向長軸を有して開設された長円孔と、該長円孔
の周縁より立設され末端が分岐管の接続部とされた分岐
管継手部とからなるものである。
According to a first aspect of the present invention, there is provided a branch saddle comprising: a curved plate applied to an outer periphery of a main pipe; an elliptical hole formed in a central portion of the curved plate with an axial long axis; A branch pipe joint is provided upright from the periphery of the oblong hole and the end is a connection part of the branch pipe.

【0008】この請求項1に記載の分岐サドルによれ
ば、湾曲板に長円孔を成形するため、主管と同一断面積
に近い開口でも長軸を伸ばせば良いので、湾曲板の周方
向両端に十分な融着面を確保することができる。また、
分岐管継手部の末端部は分岐管に合致した断面とされて
いるので、主管の流路断面に近い断面積を有する分岐管
であっても流量を確保しつつ分岐接続可能となる。
According to the first aspect of the present invention, since the elliptical hole is formed in the curved plate, the long axis may be extended even in the opening having the same sectional area as the main pipe. Sufficient fusion surface can be secured. Also,
Since the end of the branch pipe joint has a cross section that matches the branch pipe, it is possible to branch and connect the branch pipe having a sectional area close to the flow path cross section of the main pipe while securing the flow rate.

【0009】請求項2の分岐サドルは、前記請求項1の
分岐サドルにおける湾曲板が弾性体で形成され、かつ該
湾曲板の円周方向の長さが主管外周の半周を越える長さ
とされてなるものである。
According to a second aspect of the present invention, the curved plate is made of an elastic material, and the length of the curved plate in the circumferential direction exceeds a half of the outer circumference of the main pipe. It becomes.

【0010】この発明によれば、主管に分岐サドルを取
り付ける際、湾曲板の弾性を利用して分岐サドルを主管
外周にスナップ的に嵌合することができ、仮支持が非常
に容易となって取付作業性が良くなる。
According to this invention, when attaching the branch saddle to the main pipe, the branch saddle can be snap-fitted to the outer periphery of the main pipe by utilizing the elasticity of the curved plate, and the temporary support becomes very easy. The mounting workability is improved.

【0011】[0011]

【発明の実施の形態】次に、この発明の実施の形態につ
いて説明する。 実施の形態1 図1はこの発明の実施の形態1の分岐サドルの底面図、
図2は図1の正面図、図3は図2の右側面図、図4は図
2の平面図、図5は図3のX−X線断面図である。
Next, an embodiment of the present invention will be described. Embodiment 1 FIG. 1 is a bottom view of a branch saddle according to Embodiment 1 of the present invention,
2 is a front view of FIG. 1, FIG. 3 is a right side view of FIG. 2, FIG. 4 is a plan view of FIG. 2, and FIG. 5 is a sectional view taken along line XX of FIG.

【0012】なお、以下の説明において従来と同一部分
については同一符号を用い詳細な説明は省略する。図1
において、6が長円孔を示し湾曲板3の中央部に軸方向
長軸6aを有し、周方向縁は湾曲板3の周方向縁3aよ
り内側となるように開設されている。
In the following description, the same parts as those of the related art are denoted by the same reference numerals, and detailed description is omitted. FIG.
In the figure, reference numeral 6 denotes an elliptical hole, which has an axial long axis 6a at the center of the curved plate 3, and the circumferential edge is opened so as to be inside the circumferential edge 3a of the curved plate 3.

【0013】図2、図3において、7は分岐管継手部を
示し、前記長円孔6の周縁より立設され末端8が図4に
示すように分岐管の接続部とされ、図示例の場合は円形
断面とされている。
In FIGS. 2 and 3, reference numeral 7 denotes a branch pipe joint. The branch pipe joint 7 stands from the periphery of the oblong hole 6 and the end 8 serves as a branch pipe connection as shown in FIG. The case has a circular cross section.

【0014】即ち、この分岐管継手部7は基部7aな長
円錐形状、末端8が分岐管5の接続部とされ基部7aと
末端8とが図2、図3に明示されているように滑らかに
径が変化する異径円筒体とされている。
That is, the branch pipe joint 7 has a long conical shape with a base 7a, and the end 8 is a connecting portion of the branch pipe 5, and the base 7a and the end 8 are smooth as clearly shown in FIGS. The cylindrical body has a different diameter.

【0015】上記分岐サドル1はポリエチレンやポリプ
ロピレンなどのようなポリオレフィン系樹脂により一体
成形されている。また、上記において、長円孔6の断面
積は分岐管継手部7の末端8に接続される分岐管5の断
面積とほぼ等しいか大とされる。
The branch saddle 1 is integrally formed of a polyolefin resin such as polyethylene or polypropylene. In the above description, the cross-sectional area of the oblong hole 6 is substantially equal to or larger than the cross-sectional area of the branch pipe 5 connected to the end 8 of the branch pipe joint 7.

【0016】次に、上記実施の形態1の分岐サドルの使
用状態を説明する。図6は主管2に分岐サドル1を取り
付ける状態を示す分解斜視図、図7は取り付けた状態を
示す一部破断斜視図である。
Next, the use state of the branch saddle of the first embodiment will be described. FIG. 6 is an exploded perspective view showing a state in which the branch saddle 1 is attached to the main pipe 2, and FIG. 7 is a partially cutaway perspective view showing the attached state.

【0017】まず、図6に示すようにポリオレフィン系
の主管2外周に、融着用ヒータ9を介して分岐サドル1
を載置してバンド10などで固定し、前記融着用ヒータ
が伝熱ヒータの場合は通電し、また前記融着用ヒータが
電磁誘導加熱による磁性合金ヒータの場合は、外周にワ
ークコイル(図示せず)を配置して高周波磁界を付与
し、発熱させ融着する。
First, as shown in FIG. 6, a branched saddle 1 is provided around a polyolefin-based main pipe 2 through a welding heater 9.
Is fixed by a band 10 or the like. When the welding heater is a heat transfer heater, power is supplied. When the welding heater is a magnetic alloy heater by electromagnetic induction heating, a work coil (not shown) is provided on the outer periphery. ) Is applied and a high-frequency magnetic field is applied to generate heat and fuse.

【0018】その後、分岐サドル1の分岐管継手部7の
上部開口から穿孔ドリル(図示せず)を挿入して主管2
外面に分岐継手部7の基部7a内面に沿った長円形状の
開口を穿孔して内部流体の導通を図り、次いで分岐管継
手部7の末端8に分岐管5を前記と同様な融着接合によ
り接合する。
Thereafter, a drill (not shown) is inserted through the upper opening of the branch pipe joint 7 of the branch saddle 1 to insert the main pipe 2.
An elliptical opening is formed in the outer surface along the inner surface of the base 7a of the branch joint portion 7 so as to conduct the internal fluid, and then the branch pipe 5 is joined to the end 8 of the branch pipe joint portion 7 by fusion welding as described above. To join.

【0019】このとき、湾曲板3に穿孔される開口は、
長円孔6であるので、末端8の開口面積が主管2の断面
積に比べ同一以上であっても、長円孔6の長軸6a(図
1)を長くすることで湾曲板3の主管2に対する接着面
積を確保しながら分岐流量を十分に確保することができ
る。
At this time, the opening formed in the curved plate 3 is
Even if the opening area of the end 8 is equal to or larger than the cross-sectional area of the main pipe 2, the long axis 6 a (FIG. 1) of the oval hole 6 can be extended so that the main pipe of the curved plate 3 can be formed. The branch flow rate can be sufficiently secured while securing the bonding area to the second.

【0020】以上説明したように、この実施の形態1の
分岐サドル1によれば、主管2に対し流路断面がほぼ同
大の分岐管であっても分岐接続が可能となり、大径管の
分岐接続施工が非常に容易となる。
As described above, according to the branch saddle 1 of the first embodiment, the branch connection can be performed even if the branch cross section of the main pipe 2 is substantially the same as the main pipe 2. Branch connection work becomes very easy.

【0021】図8は上記実施の形態1の他の構成例を示
す断面図であり、湾曲板3に接合片3cを径方向へ延出
させ、この接合片3cに対面する接合片11aを有する
取付バンド11を主管2の下半部に当てがい、ボルトナ
ット12で固定したものである。
FIG. 8 is a sectional view showing another example of the structure of the first embodiment, in which a joining piece 3c is extended in a radial direction on a curved plate 3, and a joining piece 11a facing the joining piece 3c is provided. The mounting band 11 is applied to the lower half of the main pipe 2 and fixed with bolts and nuts 12.

【0022】この場合、湾曲板3の融着時、図6に示し
たバンド10が不要となる。なお、融着後この取付バン
ド11は取外しても良く、あるいはそのまま取り付けた
状態としておいても良い。 実施の形態2 図9は、この発明の実施の形態2の分岐サドルの右側面
図、図10は図9のY−Y線断面である。
In this case, the band 10 shown in FIG. 6 is unnecessary when the curved plate 3 is fused. After the fusion, the attachment band 11 may be removed, or may be left attached. Second Embodiment FIG. 9 is a right side view of a branch saddle according to a second embodiment of the present invention, and FIG. 10 is a cross-sectional view taken along line YY of FIG.

【0023】なお、図9、図10において図1〜図3で
示した符号と同一符号は同一部材または相当する部材を
示す。図9において、湾曲板3はプラスチック製などの
弾性を有する材質とされ、かつこの湾曲板3の円周方向
の長さLが主管2外周Sの半周を越える長さとされてい
る。
In FIGS. 9 and 10, the same reference numerals as those shown in FIGS. 1 to 3 indicate the same or corresponding members. In FIG. 9, the curved plate 3 is made of an elastic material such as plastic, and the length L of the curved plate 3 in the circumferential direction exceeds the half circumference of the outer periphery S of the main pipe 2.

【0024】従って、この実施の形態2の分岐サドル1
を主管2に取り付ける場合、図9に示したように、湾曲
板3が弾撥的に主管2に嵌合するので図6に示したよう
なバンド10が不要となり、取付施工が容易となる。
Therefore, the branch saddle 1 of the second embodiment
9 is attached to the main pipe 2 as shown in FIG. 9, the band 10 as shown in FIG. 6 is not required because the curved plate 3 resiliently fits into the main pipe 2, and the mounting work becomes easy.

【0025】以上説明したように、実施の形態2の分岐
サドル1によれば、融着時の主管2に対する分岐サドル
1の仮支持が非常に容易となり施工性が良くなる。上記
各実施の形態において、湾曲板3に開設される長円孔6
は、図示したように平行辺の両端を半円で結ぶ長円の
他、図11(a)に示すように楕円形状、同(b)に示
すように卵形状等としても良い。
As described above, according to the branch saddle 1 of the second embodiment, the temporary support of the branch saddle 1 to the main pipe 2 at the time of fusion is very easy, and the workability is improved. In each of the above embodiments, the oblong hole 6 opened in the curved plate 3
May have an elliptical shape as shown in FIG. 11 (a), an oval shape as shown in FIG. 11 (b), or the like, in addition to an ellipse connecting both ends of parallel sides with a semicircle as shown.

【0026】また、分岐管継手部7の末端8の分岐管接
続部の形状も、円形管以外に、楕円管、卵形管に対する
接続部とすることもできる。さらに、湾曲板3に対する
分岐管継手部7の立設方向を図示したような直立姿勢の
他、図12(a)に示すように傾斜あるいは同(b)に
示すように偏芯状態の姿勢にすることもできる。
The shape of the branch pipe connection at the end 8 of the branch pipe joint 7 may be a connection to an elliptical pipe or an oval pipe, in addition to a circular pipe. Further, in addition to the upright posture as shown in the drawing, the erected direction of the branch pipe joint part 7 with respect to the curved plate 3, the posture is inclined as shown in FIG. 12 (a) or in an eccentric state as shown in FIG. You can also.

【0027】[0027]

【発明の効果】以上説明したように、この発明の分岐サ
ドルによれば、主管に対し、主管とほぼ同一以上の径の
分岐管であっても、不断水で接続することができ、従来
のようにチーズ継手などを用いることなく容易に分岐管
の接続が可能となる。
As described above, according to the branch saddle of the present invention, even if the branch pipe has a diameter substantially equal to or larger than that of the main pipe, it can be connected to the main pipe without interruption. As described above, it is possible to easily connect a branch pipe without using a cheese joint or the like.

【0028】また、湾曲板に形成される長円孔は湾曲板
の幅内であれば、長軸は任意に長くすることができるの
で、流入効率を考えて分岐管の有効断面積より大きい開
口と面積とすることもでき、分岐による流量低下も防げ
る。
Also, the long axis of the elliptical hole formed in the curved plate can be arbitrarily long as long as it is within the width of the curved plate. And the area can be reduced, thereby preventing a decrease in flow rate due to branching.

【図面の簡単な説明】[Brief description of the drawings]

【図1】この発明の実施の形態1の分岐サドルの底面図
である。
FIG. 1 is a bottom view of a branch saddle according to Embodiment 1 of the present invention.

【図2】図1の正面図である。FIG. 2 is a front view of FIG.

【図3】図2の右側面図である。FIG. 3 is a right side view of FIG. 2;

【図4】図2の平面図である。FIG. 4 is a plan view of FIG. 2;

【図5】図3のX−X線矢視断面図である。FIG. 5 is a sectional view taken along line XX of FIG. 3;

【図6】取付状態を示す分解斜視図である。FIG. 6 is an exploded perspective view showing an attached state.

【図7】取付状態を示す要部破断斜視図である。FIG. 7 is a cutaway perspective view of a main part showing an attached state.

【図8】実施の形態1の他の構成例の断面図である。FIG. 8 is a cross-sectional view of another configuration example of the first embodiment.

【図9】この発明の実施の形態2の分岐サドルの右側面
図である。
FIG. 9 is a right side view of the branch saddle according to the second embodiment of the present invention.

【図10】図9のY−Y線矢視断面図である。FIG. 10 is a sectional view taken along line YY of FIG. 9;

【図11】実施の形態1、2の他の構成例の底面図であ
り、(a)は開口を楕円とした場合、(b)は卵形とし
た場合を示す。
FIGS. 11A and 11B are bottom views of another configuration example of the first and second embodiments, where FIG. 11A shows a case where the opening is elliptical, and FIG. 11B shows a case where the opening is oval.

【図12】実施の形態1、2の分岐管接続部の立設状態
の他の構成例の説明図であり、(a)は正面図、(b)
は他の構成例の右側面図を示す。
12A and 12B are explanatory diagrams of another configuration example of the standing state of the branch pipe connecting portions of the first and second embodiments, where FIG. 12A is a front view and FIG.
Shows a right side view of another configuration example.

【図13】従来例の説明斜視図である。FIG. 13 is an explanatory perspective view of a conventional example.

【符号の説明】[Explanation of symbols]

1 分岐サドル 2 主管 3 湾曲板 5 分岐管 6 長円孔 7 分岐継手部 7a 分岐継手部の基部 8 末端 DESCRIPTION OF SYMBOLS 1 Branch saddle 2 Main pipe 3 Curved plate 5 Branch pipe 6 Oval hole 7 Branch joint 7a Base of branch joint 8 Terminal

───────────────────────────────────────────────────── フロントページの続き (72)発明者 倍 秀樹 大阪府堺市石津北町64番地 株式会社クボ タビニルパイプ工場内 (72)発明者 榎本 秀和 大阪府堺市石津北町64番地 株式会社クボ タビニルパイプ工場内 Fターム(参考) 3H016 CA00 3H019 AA01 AA04 BA04 BB02 CA03 CA07 CB01 DA03 FA07 FA14 GA02  ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideki 64 Ishizu-Kitamachi, Sakai-shi, Osaka, Japan Inside the Kubo Tavinyl Pipe Plant Co., Ltd. Terms (reference) 3H016 CA00 3H019 AA01 AA04 BA04 BB02 CA03 CA07 CB01 DA03 FA07 FA14 GA02

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 主管外周に当てがわれる湾曲板と、該湾
曲板の中央部に軸方向長軸を有して開設された長円孔
と、該長円孔の周縁より立設され末端が分岐管の接続部
とされた分岐管継手部とからなる分岐サドル。
1. A curved plate applied to the outer periphery of a main pipe, an elliptical hole having an axial long axis at a central portion of the curved plate, and an end erected from a peripheral edge of the elliptical hole and having an end. A branch saddle comprising a branch pipe joint and a branch pipe joint.
【請求項2】 請求項1の分岐サドルにおける湾曲板が
弾性体で形成され、かつ該湾曲板の円周方向の長さが主
管外周の半周を越える長さとされてなる分岐サドル。
2. A branch saddle according to claim 1, wherein the curved plate in the branch saddle according to claim 1 is formed of an elastic material, and the length of the curved plate in the circumferential direction exceeds a half of the outer circumference of the main pipe.
JP10196408A 1998-07-13 1998-07-13 Branch saddle Pending JP2000028072A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10196408A JP2000028072A (en) 1998-07-13 1998-07-13 Branch saddle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10196408A JP2000028072A (en) 1998-07-13 1998-07-13 Branch saddle

Publications (1)

Publication Number Publication Date
JP2000028072A true JP2000028072A (en) 2000-01-25

Family

ID=16357373

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10196408A Pending JP2000028072A (en) 1998-07-13 1998-07-13 Branch saddle

Country Status (1)

Country Link
JP (1) JP2000028072A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002327886A (en) * 2001-04-27 2002-11-15 Agri Techno Yazaki Kk Connecting structure for supply port of air chamber and connecting pipe
JP2012112505A (en) * 2010-11-26 2012-06-14 Cosmo Koki Co Ltd Flow control valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002327886A (en) * 2001-04-27 2002-11-15 Agri Techno Yazaki Kk Connecting structure for supply port of air chamber and connecting pipe
JP4574892B2 (en) * 2001-04-27 2010-11-04 アグリテクノ矢崎株式会社 Connecting structure of air chamber supply port and connecting pipe
JP2012112505A (en) * 2010-11-26 2012-06-14 Cosmo Koki Co Ltd Flow control valve

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