JPH03177697A - Water cut-off device and bag thereof - Google Patents
Water cut-off device and bag thereofInfo
- Publication number
- JPH03177697A JPH03177697A JP1316776A JP31677689A JPH03177697A JP H03177697 A JPH03177697 A JP H03177697A JP 1316776 A JP1316776 A JP 1316776A JP 31677689 A JP31677689 A JP 31677689A JP H03177697 A JPH03177697 A JP H03177697A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- bag
- water
- tube
- holding device
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 abstract description 8
- 230000008439 repair process Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 241000254032 Acrididae Species 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 241001481789 Rupicapra Species 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Pipe Accessories (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、主として水道用管路の管内流体を一時的に遮
断する止水装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention mainly relates to a water stop device that temporarily shuts off fluid in a water pipe.
［従来の技術］
従来、ガス管路の修理等の工事で工事箇所の管内流体を
遮断する方法としては、例えば特開昭５８−２４６９３
号に示されるように、耐圧バッグを管路内に挿入して管
内流体を一時的に迄断する方式が知られている。[Prior Art] Conventionally, as a method for shutting off the fluid in the pipe at the construction site during construction work such as repair of gas pipelines, for example, Japanese Patent Application Laid-Open No. 58-24693
As shown in No. 1, a method is known in which a pressure-resistant bag is inserted into a pipe to temporarily cut off the fluid within the pipe.
［発明が解決しようとする課題］
しかしながら、上記の方式を水道用管路に適用したので
は、以下に述べるような問題点を有している。[Problems to be Solved by the Invention] However, when the above method is applied to water pipes, there are problems as described below.
すなわち、水道用管路に使用されているダクタイル鋳鉄
管、石綿セメント管、硬質塩化ビニル管等の水道用管の
継手部分は殆んど管離脱防止機構か付いていない。然る
に、管内流体の管内圧力はガスでは１ｋｇ／ｃｍ’以下
であるのに対し、水道では３〜６ ｋｇ／ ｃ ｒｎ’
位とガスに比し高圧であり、このため、修理等の工事箇
所で水道用管路内を遮断し、下流の管を切断すると、管
内圧力により発生する力により上流の管の継手部分が離
脱してしまい、該離脱箇所から水が溢出するという問題
を生じていた。又、管路が石綿セメント管、硬質塩化ビ
ニル管等で構成されている場合には、管内に挿入した耐
圧バッグの圧力により管を破損する虞れを生じていた。That is, most of the joints of water pipes such as ductile cast iron pipes, asbestos cement pipes, and hard vinyl chloride pipes used in water pipes are not equipped with a pipe detachment prevention mechanism. However, the pressure inside the pipe of the fluid in the pipe is 1 kg/cm' or less for gas, whereas it is 3 to 6 kg/cm' for water supply.
For this reason, when the inside of the water supply pipe is shut off and the downstream pipe is cut at a construction site such as repair, the joint part of the upstream pipe will separate due to the force generated by the pressure inside the pipe. This caused a problem in that water overflowed from the detached location. Further, when the pipe line is constructed of an asbestos cement pipe, a hard vinyl chloride pipe, etc., there is a risk that the pipe may be damaged by the pressure of the pressure bag inserted into the pipe.
そこで本発明は、水道用管路内を遮断して下流の管を切
断しても、上流の管の継手部分の離脱を防止し、又、管
内に装入したバッグの圧力による管の破損を防止できる
止水装置及び、該止水装置の止水用に好適なバッグを提
供し、以て上記従来技術の問題を解決しようとするもの
である。Therefore, the present invention prevents the joint part of the upstream pipe from separating even if the inside of the water supply pipe is shut off and the downstream pipe is cut, and also prevents the pipe from being damaged by the pressure of the bag inserted into the pipe. It is an object of the present invention to provide a water-stopping device that can prevent water-stopping, and a bag suitable for the water-stopping of the water-stopping device, thereby solving the problems of the prior art described above.
［課題を解決するための手段］
すなわち、第１の発明は、サドル付分水栓と、該サドル
付分水栓に取付ける収納体内に収縮時のバッグを収納し
且つ該バッグな可撓管を介して連結したバッグ操作管を
備えたバッグ装入装置と、一対の管締付用２つ割状のバ
ンドのラグに杭係止用係止部を設けた管保持装置とを備
えたことを特徴とする止水装置を要旨とするものである
。[Means for Solving the Problems] That is, the first invention includes a water distribution faucet with a saddle, a bag when deflated in a storage body attached to the water distribution faucet with a saddle, and a flexible tube serving as the bag. The present invention is equipped with a bag loading device equipped with a bag operation tube connected through a tube, and a tube holding device in which a locking portion for peg locking is provided on the lugs of a pair of two-piece bands for tightening the tubes. The gist is the water stop device, which is a feature of the invention.
第２の発明は、気密性と柔軟性を有する内層と耐圧性と
柔軟性を有する外層との２層よりなり。The second invention consists of two layers: an inner layer having airtightness and flexibility, and an outer layer having pressure resistance and flexibility.
これら内層と外層とは取付口部を除いて非接着としたこ
とを特徴とする止水装置用バッグを要旨とするものであ
る。The gist of the bag is that the inner layer and the outer layer are non-adhesive except for the mounting opening.
［作 用］
このようにした止水装置にあっては、バッグによる止水
使用状態の下で、管路のサドル付分水栓の下流側に隣接
させた管保持装置の杭係止用係止部を杭に係止さす。こ
れにより管路の下流側を修理等の工事で切離した場合、
管路の上流側で水圧により管が抜出そうとしても管保持
装置が管の抜出を阻止する。又、バッグの内圧による管
の破損を管を保持した管保持装置が阻止する。又、収縮
状態としたバッグをバッグ操作管の昇降によりバッグ装
入装置の収納体内と管路の管内とに相互移動させる。[Function] In such a water stop device, when the bag is used to stop water, the pile locking catch of the pipe holding device adjacent to the downstream side of the distribution faucet with a saddle in the pipe line is activated. Attach the stop to the stake. As a result, if the downstream side of the pipeline is disconnected for repairs or other construction work,
Even if the pipe attempts to be pulled out due to water pressure on the upstream side of the pipe line, the pipe holding device prevents the pipe from being pulled out. Furthermore, the tube holding device that holds the tube prevents the tube from being damaged due to the internal pressure of the bag. Further, the deflated bag is moved between the storage body of the bag loading device and the pipe of the conduit by raising and lowering the bag operating tube.
第２発明のバッグにあっては、膨張使用時に内層が内圧
な維持すると共に外層が強度を維持して止水作用を果す
一方、収縮状態とした際には内層と外層とか取付口部を
除き非接着であるため十分な柔軟性を発揮して前記バッ
グ装入装置内と管路の管内への相互移動を円滑に行わせ
る。In the bag of the second invention, when the bag is inflated, the inner layer maintains the internal pressure and the outer layer maintains its strength and acts as a water stopper, while when it is in the deflated state, the inner layer, the outer layer, and the attachment opening are removed. Since it is non-adhesive, it exhibits sufficient flexibility to allow smooth mutual movement between the bag loading device and the conduit.
［実施例］
次に１本発明の一実施例を図面を参照して説明すると、
本例の止水装置はサドル付分水栓ｌ、管保持装置２、バ
ッグ装入装置３及びバッグ４を備えている。[Example] Next, an example of the present invention will be described with reference to the drawings.
The water stop device of this example includes a water distribution faucet l with a saddle, a pipe holding device 2, a bag loading device 3, and a bag 4.
サドル付分水栓１それ自体は日本水道協会規格のＪＷＷ
Ａ−Ｂ−１１７（水道用サドル付分水栓）として規格さ
れているものと同様であって、管路の管５に着脱可能な
二つ割状サドル６を下端に付設した栓本体７内に弁孔８
を有するボール状の栓９を収容し、栓９に係合した操作
杆１０を栓本体７に回転可能に設け、操作杆ｌＯの約り
回転操作により栓９を開閉する。The water faucet with saddle 1 itself is JWW according to the Japan Water Works Association standard.
The interior of the faucet body 7 is similar to that standardized as A-B-117 (distribution faucet with saddle for water use), and has a two-piece saddle 6 attached to the lower end that is detachable from the pipe 5 of the conduit. Valve hole 8
A ball-shaped stopper 9 having a diameter is housed therein, and an operating rod 10 engaged with the stopper 9 is rotatably provided on the stopper body 7, and the stopper 9 is opened and closed by rotational operation of the operating rod IO.
バッグ装入装置３は、収縮時バッグ４を収納する筒状の
収納体１１の下端のねじ部１２を前記サドル付分水栓の
栓本体７に螺着し、収納体１１の上端にバッグ操作管１
３を摺嵌し、バッグ操作管１３の下端に管軸方向に剛性
を看し管直角方向には可撓性を有する可撓管１４を接続
し、可撓管１４にはバッグ４を取付け、可撓管１４の先
端部１５をバッグ４の奥方近くに臨ませている。The bag loading device 3 screws the threaded portion 12 at the lower end of the cylindrical storage body 11 that stores the bag 4 when deflated into the faucet main body 7 of the saddle-equipped faucet, and inserts the bag into the upper end of the storage body 11. tube 1
3, and connect the lower end of the bag operation tube 13 with a flexible tube 14 that is rigid in the tube axis direction and flexible in the direction perpendicular to the tube, and the bag 4 is attached to the flexible tube 14. The tip 15 of the flexible tube 14 is exposed near the back of the bag 4.
バッグ４は、ゴム又は軟質プラスチック製等の気密性及
び柔軟性を有する内層１６とガラス繊維入り不織布又は
セーム皮等の引張強さが大きく且つ摩擦係数が大きく且
つ柔軟性を有し且つ透水率の小さい外層１７とからなり
、収縮状態において前記バック装入装置の収納体１１内
に納められ、内層１６と外層１７とは前記可撓管１４へ
の取付口部１８を除いて非接着とされ、膨張状態におい
て外層１７の外周は管５内周より少し大きい程度とし、
外層１７の長さ文は管５の内径程度とし、長手方向断面
を長円状としである。The bag 4 has an airtight and flexible inner layer 16 made of rubber or soft plastic, etc., and an inner layer 16 made of glass fiber-containing nonwoven fabric or chamois leather, which has high tensile strength, a large coefficient of friction, flexibility, and low water permeability. It consists of a small outer layer 17, and is housed in the storage body 11 of the bag loading device in a contracted state, and the inner layer 16 and the outer layer 17 are non-adhered except for the attachment opening 18 to the flexible tube 14, In the expanded state, the outer circumference of the outer layer 17 is slightly larger than the inner circumference of the tube 5,
The length of the outer layer 17 is approximately the same as the inner diameter of the tube 5, and the cross section in the longitudinal direction is elliptical.
前記管保持装置２は、管５の外周に適合する内面を持つ
一対の二つ割成のハント２０．２１の両側にボルト取付
用孔２２〜２２を有するラグ２３〜２３を設け、一方の
バンド２１のラグ２３．２３には杭を係止する係止部２
４．２４を対設し、ハント２０．２１の管当接面の管軸
方向長さｍは前記バッグ４の長さ文よりも若干長くしで
ある。The tube holding device 2 is provided with lugs 23 to 23 having bolt attachment holes 22 to 22 on both sides of a pair of two-part hunts 20 and 21 having an inner surface that matches the outer circumference of the tube 5, and one band The lug 23 of 21 has a locking part 2 for locking the pile.
4.24, and the length m of the tube abutting surface of the hunt 20.21 in the tube axis direction is slightly longer than the length of the bag 4.
このようにした本装置にあっては、止水筒所への使用に
際し、図示のように、管路の止水筒所の管５にサドル６
をボルト２６．ナツト２７て締着してサドル付分水栓１
を設立し、穿孔機（図示せず）をサドル付分水栓ｌに取
付けて該穿孔機により管５に孔２８を穿孔し、サドル付
分水栓１を閉として穿孔機を取脱しておく。次に管５の
サドル伺分水栓ｌの下流側に隣接して管５に管保持装置
のハント２０．２１をボルト２９、ナツト３０で被着す
る。この場合、係止部２４は管５の上流側に配しておく
。次に杭３１を係止部２４に当接して地面に打込むか又
は、管５の管保持装置２より上流側の適所に杭３２を打
込み、杭３２と係止部２４とを針金又はワイヤー等３３
で係止する。−方、サドル付分水栓ｌの上端部にバッグ
装入装置３をねじ部１２を利用して取付け、サドル付分
水栓ｌを開状態となし、バッグ操作管１３を下降さす。When this device is used at a water stop station, as shown in the figure, a saddle 6 is attached to the pipe 5 at the water stop station of the pipeline.
Bolt 26. Tighten nut 27 and divider faucet with saddle 1
A drilling machine (not shown) is attached to the saddle-equipped diversion faucet 1, a hole 28 is bored in the pipe 5 using the drilling machine, the saddle-equipped diversion faucet 1 is closed, and the drilling machine is removed. . Next, a pipe holding device hunt 20, 21 is attached to the pipe 5 adjacent to the downstream side of the saddle-dispensing faucet l with bolts 29 and nuts 30. In this case, the locking portion 24 is arranged on the upstream side of the pipe 5. Next, the stake 31 is brought into contact with the locking portion 24 and driven into the ground, or the stake 32 is driven into the appropriate position of the pipe 5 on the upstream side of the pipe holding device 2, and the stake 32 and the locking portion 24 are connected with wire or wire. etc. 33
Lock it with. - On the other hand, the bag loading device 3 is attached to the upper end of the saddle-equipped distribution faucet l using the screw portion 12, the saddle-equipped distribution faucet l is opened, and the bag operation tube 13 is lowered.
これにより、バッグ４が可撓管１４を介し下動されてサ
ドル付分水栓ｌ内、管の孔２８を通って管５内に入り、
その際、管５内の水流及び可撓管１４の先端部のガイド
作用により管５の軸方向に沿って管保持装置２に対応位
置した状態となる。次にバッグ操作管１３の先端に取付
けた送圧器（図示せず）によりバッグ４内に水圧又は空
圧を加える。これにより、バッグ４が第１図に示すよう
に膨張し、バッグの外層１７が管５内壁に′Ｉ！、接し
、止水を完了する。As a result, the bag 4 is moved down through the flexible tube 14 and enters the saddle faucet l, passes through the hole 28 in the tube, and enters the tube 5.
At this time, due to the water flow within the tube 5 and the guiding action of the tip of the flexible tube 14, the tube 5 is placed in a position corresponding to the tube holding device 2 along the axial direction. Next, water pressure or pneumatic pressure is applied to the inside of the bag 4 using a pressure transmitter (not shown) attached to the tip of the bag operation tube 13. This causes the bag 4 to expand as shown in FIG. , and complete the water stop.
この止水状態の下で、管５のバッグ４よりも下流にて管
５の修理等の工事を実施する。その際、下流側で管５を
切除すると、上流側の水圧により管５が下流側に抜は出
そうとするが、管５に連結した管保持装置の係止部２４
か杭３１又は３２に係止されて下流側への移動を阻止さ
れ、管５の下流側への抜出か防止される。Under this water cutoff state, work such as repair of the pipe 5 is carried out downstream of the bag 4 of the pipe 5. At this time, when the pipe 5 is cut off on the downstream side, the pipe 5 tries to be pulled out downstream due to the water pressure on the upstream side, but the locking part 2 of the pipe holding device connected to the pipe 5
The pipe 5 is locked to the pile 31 or 32 and is prevented from moving downstream, thereby preventing the pipe 5 from being pulled out downstream.
なお、上記管５の修理等の工事終了後は、バッタ４内の
水又は空気を抜いてハック４を収縮し、ハック操作管１
３を上昇してバッグ４を収納体ｌｌ内に収納し、サドル
付分水栓ｌを閉状態とし。In addition, after completion of the work such as repairing the pipe 5, the water or air in the grasshopper 4 is removed, the hack 4 is deflated, and the hack operation pipe 1 is closed.
3 and store the bag 4 in the storage body 11, and close the saddle faucet 1.
必要によりバッグ４、バッグ装入装置３及び管保持装置
２を取脱する。If necessary, remove the bag 4, bag loading device 3, and tube holding device 2.
また、上側は水道用に適用する場合について述べたがガ
ス用等にも適用か可能である。In addition, although the upper part has been described for application to water supply, it can also be applied to gas, etc.
［発明の効果］
水使用時に、管路の止水筒所より下流側の管を切除して
も、杭に係止する係止部を備えた管保持装置が保持した
管の上流側の内圧による抜出を防止でき、又、管保持装
置か管を保持することにより管内に装入したバッグの内
圧による管の破損を防止でき、ひいてはバッグの内圧を
高めて止水効果を向上できる。[Effect of the invention] When using water, even if the pipe on the downstream side of the water stop of the pipe is removed, the internal pressure on the upstream side of the pipe held by the pipe holding device equipped with the locking part that locks on the pile It is possible to prevent the tube from being pulled out, and by holding the tube with the tube holding device, it is possible to prevent the tube from being damaged due to the internal pressure of the bag inserted into the tube, and in turn, it is possible to increase the internal pressure of the bag and improve the water-stopping effect.
第２発明のバッグにおいては、気密用内層と耐圧用外層
の２層とし且つこれらを取付口部を除き非接着としであ
るから収縮した収納時に柔軟性を発揮して収納し易く、
収納位置と使用位置への相互移動が容易となり、止水装
置に好適に利用できる。The bag of the second invention has two layers, an air-tight inner layer and a pressure-resistant outer layer, and is non-adhesive except for the mounting opening, so it exhibits flexibility when stored when it is contracted and is easy to store.
It is easy to move between the storage position and the use position, making it suitable for use in water stop devices.
図面は本発明の一実施例を示すもので、第１図は使用状
態における側断面図、第２図はその転向した平面図であ
り、第３図は第１図のＡ−Ａ線の１・・・サドル付分水
栓、２・・・管保持装置、３・・・バッグ装入装置、４
・・・バッグ、１１・・・収納体、１３・・・バッグ操
作管、１４・・・可撓管、１６・・・内層、１７・・・
外層、１８・・・取付口部、２０．２１・・・バント２
３・・・ラグ、２４・・・係止部The drawings show one embodiment of the present invention; FIG. 1 is a side sectional view in a state of use, FIG. 2 is a turned plan view thereof, and FIG. ...Distribution faucet with saddle, 2...Pipe holding device, 3...Bag charging device, 4
...Bag, 11...Storage body, 13...Bag operation tube, 14...Flexible tube, 16...Inner layer, 17...
Outer layer, 18... Mounting port, 20.21... Bunt 2
3... Lug, 24... Locking part
Claims (1)
納体内に収縮時のバッグを収納し且つ該バッグを可撓管
を介して連結したバッグ操作管を備えたバッグ装入装置
と、一対の管締付用２つ割状のバンドのラグに杭係止用
係止部を設けた管保持装置とを備えたことを特徴とする
止水装置。 ２ 気密性と柔軟性を有する内層と耐圧性と柔軟性を有
する外層との２層よりなり、これら内層と外層とは取付
口部を除いて非接着としたことを特徴とする止水装置用
バッグ。[Scope of Claims] 1. A water diversion faucet with a saddle, and a bag operation tube that stores a deflated bag in a storage body attached to the diversion faucet with a saddle, and connects the bag via a flexible tube. A water stop device comprising: a bag loading device; and a pipe holding device having a locking portion for locking a pile on the lugs of a pair of two-piece pipe tightening bands. 2. For a water stop device comprising two layers: an inner layer having airtightness and flexibility and an outer layer having pressure resistance and flexibility, the inner layer and the outer layer being non-adhesive except for the mounting opening. bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1316776A JPH0689875B2 (en) | 1989-12-06 | 1989-12-06 | Water stop device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1316776A JPH0689875B2 (en) | 1989-12-06 | 1989-12-06 | Water stop device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03177697A true JPH03177697A (en) | 1991-08-01 |
| JPH0689875B2 JPH0689875B2 (en) | 1994-11-14 |
Family
ID=18080787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1316776A Expired - Lifetime JPH0689875B2 (en) | 1989-12-06 | 1989-12-06 | Water stop device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0689875B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009270263A (en) * | 2008-04-30 | 2009-11-19 | Shin Nihon Kogyo:Kk | Water stop work method for water service pipe, and buried object laying method |
| JP2013238257A (en) * | 2012-05-11 | 2013-11-28 | Kurodite Kogyo Kk | Pipe separation prevention device |
| JP2014020498A (en) * | 2012-07-20 | 2014-02-03 | Kurodite Kogyo Kk | Bag for water cutoff |
| JP2016173141A (en) * | 2015-03-17 | 2016-09-29 | 株式会社水道技術開発機構 | Pipe movement prevention device and fixing method of fluid pipeline system |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4785291B2 (en) * | 2001-07-31 | 2011-10-05 | 東京瓦斯株式会社 | Pipeline closure |
| JP5241873B2 (en) * | 2011-03-23 | 2013-07-17 | 東京瓦斯株式会社 | Pipe closure and closing method |
| JP6595316B2 (en) * | 2015-11-24 | 2019-10-23 | 株式会社水道技術開発機構 | Pipe movement prevention device and fluid piping system fixing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01113695U (en) * | 1988-01-26 | 1989-07-31 | ||
| JP3011199U (en) * | 1994-11-16 | 1995-05-16 | 多摩川精機株式会社 | Detector |
-
1989
- 1989-12-06 JP JP1316776A patent/JPH0689875B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01113695U (en) * | 1988-01-26 | 1989-07-31 | ||
| JP3011199U (en) * | 1994-11-16 | 1995-05-16 | 多摩川精機株式会社 | Detector |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009270263A (en) * | 2008-04-30 | 2009-11-19 | Shin Nihon Kogyo:Kk | Water stop work method for water service pipe, and buried object laying method |
| JP2013238257A (en) * | 2012-05-11 | 2013-11-28 | Kurodite Kogyo Kk | Pipe separation prevention device |
| JP2014020498A (en) * | 2012-07-20 | 2014-02-03 | Kurodite Kogyo Kk | Bag for water cutoff |
| JP2016173141A (en) * | 2015-03-17 | 2016-09-29 | 株式会社水道技術開発機構 | Pipe movement prevention device and fixing method of fluid pipeline system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0689875B2 (en) | 1994-11-14 |
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