JPH093985A - Device for connecting piping of city water equipment - Google Patents
Device for connecting piping of city water equipmentInfo
- Publication number
- JPH093985A JPH093985A JP17164095A JP17164095A JPH093985A JP H093985 A JPH093985 A JP H093985A JP 17164095 A JP17164095 A JP 17164095A JP 17164095 A JP17164095 A JP 17164095A JP H093985 A JPH093985 A JP H093985A
- Authority
- JP
- Japan
- Prior art keywords
- water
- flow path
- inlet
- pipe
- water supply
- 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
Landscapes
- Measuring Volume Flow (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は水道用機器を水道配管に
取り付けるための装置に関し、さらに詳細に言えば、水
道機器の交換、点検作業等を不断水で行うことが出来、
水道機器の取付けが終了した時点で、この機器を通る流
路内に存在する可能性のある空気を、この流路への順方
向の通水に先立ち排出できるようにした装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for attaching a water supply device to a water supply pipe, and more specifically, it is possible to perform replacement, inspection work, etc. of the water supply device without interruption.
The present invention relates to an apparatus capable of discharging air, which may exist in a flow path passing through this water equipment at the end of installation of water equipment, prior to forward water flow to this flow path.
【０００２】[0002]
【従来の技術】従来、水道は建物の３階から上の階へ直
接給水することが法的に規制されていた。そして、３階
より上に給水する場合には、一旦水を受水槽に受けてか
らポンプを使用して給水したり、或いは高架水槽にポン
プで上げてから給水していた。2. Description of the Related Art Conventionally, it has been legally regulated to directly supply water from the third floor of a building to the upper floor. When water is supplied above the third floor, water is first received by a water receiving tank and then pumped, or water is pumped to an elevated water tank and then water is supplied.
【０００３】しかし近年になって、受水槽の衛生面等が
問題になるなどして、３階以上にも直接給水する直圧給
水や、ブースターポンプを使用する直結増圧給水等の直
結給水が認められるようになってきた。However, in recent years, due to problems such as sanitation of the water receiving tank, direct pressure water supply to the third floor and above and direct connection water supply such as direct connection booster water supply using a booster pump have been adopted. It has come to be recognized.
【０００４】[0004]
【発明が解決しようとする課題】ところで、例えば量水
器は定期的に交換することが義務付けられている。受水
槽が設けられている場合には、その交換作業を行ってい
る間も、受水槽に溜まった水を利用できるので、断水の
問題は生じなかった。By the way, for example, it is obliged to periodically replace a water meter. When the water receiving tank is provided, water accumulated in the water receiving tank can be used even during the replacement work, so that the problem of water interruption did not occur.
【０００５】しかし、直結給水の場合には、量水器を交
換する際には断水することとなる。そして高層の集合住
宅の場合には、各戸毎に断水する旨を連絡してから取り
替え作業をするのは大変な労力を伴う。However, in the case of direct water supply, the water will be cut off when the water meter is replaced. In the case of high-rise condominiums, it takes a great deal of effort to perform replacement work after notifying that water will be cut off for each house.
【０００６】また、直結給水を行う場合には、配水管の
圧力が低下した時に下流側の汚染水が逆流する可能性が
あり、これを防止するために高性能の逆止弁の設置が要
求され、その定期的な点検が必要となる。この場合に
も、従来方式では点検中の断水は避けられない。Further, in the case of direct water supply, there is a possibility that contaminated water on the downstream side will flow backward when the pressure in the water distribution pipe drops, and in order to prevent this, it is necessary to install a high-performance check valve. And its periodic inspection is required. Even in this case, the conventional method cannot avoid water interruption during the inspection.
【０００７】また、機器の交換を行った場合、この機器
内は勿論、その両端に接続される配管部分には通常空気
が存在する。ところで、前述のようにブースタポンプを
使用して直結給水を行う場合、この空気が存在したまま
通水を再開すると、エアーロックという現象を起こして
しまう。すなわち、例えばブースタポンプとして渦巻き
ポンプを使用した場合、ポンプの吸い込み口付近は他の
部分に比して圧力が低く、空気が少量でも混入するとこ
の空気が急速に膨張して羽根車の周囲を占めてしまい、
揚水不能になってしまう。一般的には、一旦エアーロッ
クが生じると、そのまま運転を続けても正常な状態に戻
らない。従って、ポンプの運転を停止させて、しかるべ
き手段で空気を排出しなければならない。従って、この
場合には断水状態になってしまう。When the equipment is replaced, air is usually present not only in the equipment but also in the pipes connected to both ends of the equipment. By the way, in the case of directly connecting water using the booster pump as described above, if the water flow is restarted in the presence of this air, a phenomenon called air lock will occur. That is, for example, when a spiral pump is used as the booster pump, the pressure is lower near the suction port of the pump than other parts, and even if a small amount of air is mixed in, this air expands rapidly and occupies the periphery of the impeller. And
It becomes impossible to pump water. In general, once an airlock occurs, it will not return to a normal state even if the operation is continued. Therefore, the pump must be stopped and the air must be expelled by appropriate means. Therefore, in this case, the water is cut off.
【０００８】ブースタポンプを使用しない場合でも、空
気が存在したままで通水を再開すると、種々の不都合が
ある。すなわち、空気は配管の高所に溜まるために、所
によっては通水断面積が絞られて出水不良を起こした
り、その空気溜まりの部分の腐食を引き起こしやすい。
また、交換したメータが集合住宅の親メータであった場
合には、空気が子メータを通過する際にこのメータの針
を過進してしまう。さらには、その空気がカランから出
る際に一気に大気圧に開放されるために、水が飛散す
る。Even if the booster pump is not used, there are various inconveniences when the water flow is restarted in the presence of air. That is, since air accumulates at a high place in the pipe, the cross-sectional area of the water passage is narrowed at some places, which may cause poor water output or cause corrosion of the air accumulation portion.
Further, when the replaced meter is the parent meter of the housing complex, when the air passes through the child meter, the needle of this meter is over-advanced. Furthermore, as the air exits Karan, it is suddenly released to atmospheric pressure, causing water to splash.
【０００９】本発明は、上記問題点に鑑みなされたもの
であり、水道配管に接続された水道機器を点検或いは交
換等のために取り外す際の断水を避けることが出来、機
器交換作業等終了時点で、この機器内を含めた流路内に
存在する空気を、この流路への通水に先立ち排出するこ
とのできる、水道機器を配管に接続する為の装置を提供
することを目的とするものである。The present invention has been made in view of the above problems, and it is possible to avoid water cutoff when removing a water supply device connected to a water supply pipe for inspection or replacement, and at the end of the device replacement work. Therefore, it is an object of the present invention to provide a device for connecting a water supply device to a pipe, which is capable of discharging air existing in a flow path including the inside of this device prior to passing water through the flow path. It is a thing.
【００１０】[0010]
【課題を解決するための手段】上記課題を解決するため
に、本願発明に係る量水器等の水道機器を配管に接続す
るための接続装置においては、以下の様な構成とした。
即ち、一方の配管の端部と水道機器の一方の流路連結部
とを接続する、一つの流入口と第１と第２の流出口とを
備えた第１接続手段と、他方の配管の端部と水道機器の
他方の流路連結部とを接続する、第１と第２の流入口と
一つの流出口とを備えた第２接続手段を設ける。そし
て、バイパス管で第１接続手段の第２流出口と第２接続
手段の第２流入口とを接続する。さらに、第１接続手段
の第１流出口と水道機器と第２接続手段の第１流入口と
を通る第１の流路と、第１接続手段の第２流出口とバイ
パス管と第２接続手段の第２流入口とを通る第２の流路
との間で水の流れを切り替える流路切替え手段と、水道
機器を当該装置に着脱自在に取り付ける取付け手段を設
ける。この流路切替え手段は、第２接続手段の第１の流
入口の上流側に設けられた仕切弁を含む。装置はさら
に、第１の流路内の空気を排出するためのドレインバル
ブを備えている。In order to solve the above problems, a connecting device for connecting a water supply device such as a water meter according to the present invention to a pipe has the following structure.
That is, the first connecting means having one inflow port and the first and second outflow ports, which connects one end of one pipe and one flow path connecting part of the water supply device, and the other pipe There is provided a second connecting means having first and second inflow ports and one outflow port, which connects the end part and the other flow path connecting part of the water supply device. The bypass pipe connects the second outlet of the first connecting device and the second inlet of the second connecting device. Furthermore, a first flow path that passes through the first outlet of the first connecting means, the water supply device, and the first inlet of the second connecting means, the second outlet of the first connecting means, the bypass pipe, and the second connection. A flow path switching means for switching the flow of water between the second flow path passing through the second inlet port of the means and a second flow path, and an attachment means for detachably attaching the water supply device to the device are provided. The flow path switching means includes a sluice valve provided on the upstream side of the first inflow port of the second connecting means. The device further comprises a drain valve for venting air in the first flow path.
【００１１】[0011]
【実施例】以下、図面に基づき本願発明の具体的実施例
を説明するが、本願発明の範囲は以下に説明される実施
例に限定されるのではない。EXAMPLES Specific examples of the present invention will be described below with reference to the drawings, but the scope of the present invention is not limited to the examples described below.
【００１２】図１は、本発明の一実施例に係る水道機器
の配管接続用バイパス管付き装置（以下、単に「装置」
と言う。）を示す平面図であり、図において装置は符号
１でその全体を示されている。また、接続される水道機
器は、本実施例では量水器２である。なお、現在の量水
器には、他の機器或いは配管への接続部がフランジとな
ってボルト、ナットで締結されるタイプと、ネジ式タイ
プとがあるが、本実施例ではフランジ式の量水器で説明
する。以下、詳述する。FIG. 1 shows a device with a bypass pipe for connecting a pipe of a water supply device according to an embodiment of the present invention (hereinafter simply referred to as "device").
Say ) Is a plan view of the device, in which the device is indicated generally by the numeral 1. Further, the connected water equipment is the water meter 2 in this embodiment. The current water meter includes a type in which a connection portion to other equipment or a pipe serves as a flange and is fastened with a bolt and a nut, and a screw type, but in the present embodiment, a flange type quantity is used. Explain with a water bottle. The details will be described below.
【００１３】本装置１は第１の接続手段５を備えてい
る。本実施例における第１の接続手段５は、三方弁であ
り、上流側の配管（図示せず）に接続される流入口７
と、量水器２の一方の開口即ち流路連結部（フランジ）
３に接続される第１の流出口９を備えている。三方弁５
はさらに第２の流出口１１を備え、図示しないハンドル
を操作することにより、内部に配置されたボールが回転
し、流入口７と第１、第２の流出口９、１１との連通を
切り換えられるようになっている。本実施例に使用する
三方弁５は、従来知られているタイプのもので差し支え
なく、その構成は良く知られているので、詳細な説明は
省略する。なお、本実施例の三方弁５は、第２流出口１
１の反対側に設けられたアーム１３を備えている。これ
については後述する。The device 1 comprises a first connecting means 5. The first connecting means 5 in the present embodiment is a three-way valve, and an inflow port 7 connected to an upstream pipe (not shown).
And one opening of the water meter 2, that is, a flow path connecting portion (flange)
It has a first outlet 9 connected to 3. Three-way valve 5
Is further provided with a second outlet 11, and by operating a handle (not shown), a ball disposed inside is rotated to switch communication between the inlet 7 and the first and second outlets 9 and 11. It is designed to be used. The three-way valve 5 used in this embodiment may be of a conventionally known type, and its configuration is well known, so detailed description thereof will be omitted. The three-way valve 5 of the present embodiment is the second outlet 1
1 is provided with an arm 13 provided on the opposite side. This will be described later.
【００１４】本装置１は、下流側の配管（図示せず）と
量水器２の他方の開口即ち流路連結部（フランジ）４と
を接続するための第２の接続手段１５を備えている。本
実施例での第２接続手段１５はチーズであり、量水器２
の他方の開口即ち流路連結部４に接続される第１の流入
口１７と、下流側の配管に接続される流出口２１を備
え、さらに、第２の流入口１９を備えている。第２の流
入口１９は、第１の流入口１７と流出口２１との間を連
通する流路（図示せず）の途中に連通している。これに
ついては後述する。なお、本実施例のチーズ１５は、第
２流入口１９の反対側に位置してアーム２２を備えてい
る。これについても後述する。The device 1 is provided with a second connecting means 15 for connecting a downstream pipe (not shown) and the other opening of the water meter 2, that is, the flow path connecting portion (flange) 4. There is. The second connecting means 15 in this embodiment is cheese, and the water meter 2
The first inlet 17 connected to the other opening, that is, the flow path connecting portion 4, the outlet 21 connected to the downstream pipe, and the second inlet 19 are further provided. The second inflow port 19 communicates with the middle of a flow path (not shown) that communicates between the first inflow port 17 and the outflow port 21. This will be described later. The cheese 15 of this embodiment is provided with an arm 22 located on the opposite side of the second inlet 19. This will also be described later.
【００１５】符号２３は、弁装置であり、本実施例では
仕切弁を使用しているが、これに限定されるものではな
い。この仕切弁は、チーズ１５の第１の流入口１７と量
水器２の他方の流路連結部４との間に配置され、外部か
ら操作することにより、第１の流入口１７と量水器２と
の間の連通を開閉出来る。仕切弁２３は、チーズ１５の
第１流入口１７へはナット２４を使用してネジ結合され
ており、量水器２への接続部としては、量水器２のフラ
ンジ４に対応したフランジ２３ａを備え、このフランジ
２３ａには、量水器２のフランジ４に設けられた孔４ａ
に嵌合できるピン２３ｂが植えられている。Reference numeral 23 is a valve device, and a sluice valve is used in this embodiment, but the invention is not limited to this. This sluice valve is arranged between the first inflow port 17 of the cheese 15 and the other flow path connecting part 4 of the water meter 2 and is operated from the outside to allow the first inflow port 17 and the water flow meter to operate. The communication with the vessel 2 can be opened and closed. The sluice valve 23 is screwed to the first inflow port 17 of the cheese 15 by using a nut 24, and a flange 23 a corresponding to the flange 4 of the water meter 2 is used as a connecting portion to the water meter 2. The flange 23a is provided with a hole 4a provided in the flange 4 of the water meter 2.
A pin 23b that can be fitted to is planted.
【００１６】符号２５はバイパス管であり、その両端
は、第１の接続装置即ち三方弁５の第２の流出口１１
と、第２の接続装置即ちチーズ１５の第２の流入口１９
とに接続されている。Reference numeral 25 is a bypass pipe, and both ends of the bypass pipe are the first connecting device, that is, the second outlet 11 of the three-way valve 5.
And a second connection device or second inlet 19 for cheese 15.
Connected to.
【００１７】次に、量水器２を装置１に取り付け、固定
する為の取付け手段２６について図１及び図２を参照し
て説明する。図２は、この取付け手段２６を示す断面図
である。Next, a mounting means 26 for mounting and fixing the water meter 2 on the apparatus 1 will be described with reference to FIGS. 1 and 2. FIG. 2 is a sectional view showing the mounting means 26.
【００１８】符号２７は、その一端において三方弁５の
第１流出口９に固定して取り付けられた、三方弁５内に
配置されたボールを所定の位置に保持するボール押さえ
であり、構成から言えば三方弁５の一部を構成すること
となる。図２に明らかなように、ボール押さえ２７は内
部に貫通孔２８を有する筒体をなし、他端側は外径が小
さくなった縮径部２９となり、その縮径部２９に隣接し
て径大部３１が形成され、再び外径が縮径されて第１流
出口９への取付け部となっている。Reference numeral 27 is a ball retainer, which is fixedly attached to the first outlet 9 of the three-way valve 5 at one end thereof, and which holds a ball arranged in the three-way valve 5 at a predetermined position. That is, it constitutes a part of the three-way valve 5. As is apparent from FIG. 2, the ball retainer 27 forms a tubular body having a through hole 28 inside, and the other end side is a reduced diameter portion 29 having a reduced outer diameter, and the diameter is adjacent to the reduced diameter portion 29. The large portion 31 is formed, and the outer diameter is reduced again to serve as a mounting portion for the first outlet 9.
【００１９】ボール押さえ２７の他端側に、取付け手段
２６を構成する回転部材３３が、ボール押さえ２７に対
し回転可能ではあるが、軸方向移動不能の状態で取り付
けられている。本実施例では、回転部材３３はさらに二
つの部材で構成され、その一つは、一端においてボール
押さえ２７の縮径部２９の外周に嵌合した、内部に貫通
孔を備えた回転筒３５である。回転筒３５のボール押さ
え２７への取付け部側の外周には雄ねじ３７が形成さ
れ、内周には他端側から軸方向所定の位置まで雌ねじ３
９が形成されている。雌ねじ３９の内径は、ボール押さ
え２７の内径より大きくなっている。また、回転筒３５
の外周には、径方向外方へ伸びる複数の突起４０が、円
周方向で所定の間隔で形成されている。On the other end of the ball retainer 27, a rotary member 33 constituting the attaching means 26 is attached so as to be rotatable with respect to the ball retainer 27 but immovable in the axial direction. In this embodiment, the rotary member 33 is further composed of two members, one of which is a rotary cylinder 35 having a through hole therein, which is fitted to the outer periphery of the reduced diameter portion 29 of the ball retainer 27 at one end. is there. A male screw 37 is formed on the outer periphery of the rotary cylinder 35 on the side where it is attached to the ball retainer 27, and the female screw 3 is formed on the inner periphery from the other end to a predetermined axial position.
9 is formed. The inner diameter of the female screw 39 is larger than the inner diameter of the ball retainer 27. In addition, the rotary cylinder 35
A plurality of protrusions 40 extending outward in the radial direction are formed on the outer circumference of the circumferential direction at predetermined intervals in the circumferential direction.
【００２０】符号４１はナットであり、一端側の内周に
形成された雌ねじ４３が回転筒３５の雄ねじ３７にきつ
く螺合し、両者は一体で回転するようになっている。ナ
ット４１の他端側には径方向内方へ向いた丈の低い内フ
ランジ４５が形成され、この内フランジ４５の内側端面
４７と、回転筒３５のボール押さえ２７への取付け部側
の端面３６とで、ボール押さえ２７の径大部３１を両側
から挟みこんでいる。従って、回転部材３３即ち回転筒
３５とナット４１とは、一体でボール押さえ２７に対し
回転できるが、軸方向での移動は出来ないようになって
いる。回転部材３３を回転させるには、回転筒３５の突
起４０に嵌合する適宜な工具を使用して行う。Reference numeral 41 is a nut, and a female screw 43 formed on the inner periphery of the one end side is tightly screwed into a male screw 37 of the rotary cylinder 35 so that both rotate integrally. On the other end side of the nut 41, a low-diameter inner flange 45 is formed facing inward in the radial direction. The inner end surface 47 of the inner flange 45 and the end surface 36 of the rotary cylinder 35 on the side where the ball holder 27 is attached to the ball holder 27 are formed. Thus, the large diameter portion 31 of the ball retainer 27 is sandwiched from both sides. Therefore, the rotary member 33, that is, the rotary cylinder 35 and the nut 41 can rotate together with respect to the ball retainer 27, but cannot move in the axial direction. To rotate the rotating member 33, an appropriate tool that fits into the protrusion 40 of the rotating cylinder 35 is used.
【００２１】符号５１はスライド部材で、内部に貫通孔
５２を有し、小径の第１筒部５３と径大の第２筒部５５
とを備えている。そして第１筒部５３はボール押さえ２
７の貫通孔２８に嵌合している。符号５７はシールリン
グである。第２筒部５５の外周には、回転筒３５の雌ね
じ３９に螺合する雄ねじ５９が形成されている。６１は
第２筒部５５の端部に設けられたフランジで、量水器２
の接続端部即ちフランジ３に形成された貫通孔３ａに対
応した位置に、貫通孔３ａに嵌合できる寸法を有するピ
ン６３を備えている。符号６５はフランジ６１の端面に
形成された溝に収納されたカップシールである。Reference numeral 51 designates a slide member having a through hole 52 therein, a first cylindrical portion 53 having a small diameter and a second cylindrical portion 55 having a large diameter.
And The first tubular portion 53 is the ball retainer 2
7 through holes 28. Reference numeral 57 is a seal ring. On the outer periphery of the second tubular portion 55, a male screw 59 that is screwed into the female screw 39 of the rotary barrel 35 is formed. Reference numeral 61 denotes a flange provided at the end of the second tubular portion 55, which is a water meter 2
At a position corresponding to the through hole 3a formed in the connecting end portion, that is, the flange 3, there is provided a pin 63 having a size capable of being fitted into the through hole 3a. Reference numeral 65 is a cup seal housed in a groove formed on the end surface of the flange 61.
【００２２】図１に戻って説明すると、三方弁５のアー
ム１３と、チーズ１５のアーム２２とは、両端にネジを
備えた連結棒６７とナット６８とで連結されている。６
９は第１中間フレームで、バイパス管２５と連結棒６７
とにそれぞれ嵌まる筒部７０、７１及びこれらを繋ぐ連
結部７２を備えている。なお、図１には示されていない
が、連結部７２の下面側には、本装置１を設置したとき
に接地可能な脚部が設けられ、上面側には量水器２を下
から受け止める量水器受け台が取り付けられている。Returning to FIG. 1, the arm 13 of the three-way valve 5 and the arm 22 of the cheese 15 are connected by a connecting rod 67 having a screw at both ends and a nut 68. 6
Reference numeral 9 is a first intermediate frame, which is a bypass pipe 25 and a connecting rod 67.
It is provided with cylindrical portions 70 and 71 which are fitted in and, and a connecting portion 72 which connects these. Although not shown in FIG. 1, a leg that can be grounded when the device 1 is installed is provided on the lower surface side of the connecting portion 72, and the water meter 2 is received from below on the upper surface side. A water meter cradle is attached.
【００２３】符号７３は第２中間フレームで、バイパス
管２５と連結棒６７とにそれぞれ嵌まる筒部７４、７５
及びこれらを繋ぐ連結部７６を備えている。なお、図１
には示されていないが、連結部７６の下面側には、本装
置１を設置したときに接地可能な脚部が設けられてい
る。また、連結部７６は図中で右方へ伸びる延長部７７
を備えている。そして、図には示されていないが、取付
け手段２６のスライド部材５１のフランジ６１の下部が
一部切り取られて平面となっており、この平面部分が延
長部７７の上に載っている。従って、延長部７７はスラ
イド部材５１の回転を阻止する手段を提供している。Reference numeral 73 is a second intermediate frame, which is cylindrical portions 74 and 75 fitted in the bypass pipe 25 and the connecting rod 67, respectively.
And a connecting portion 76 connecting them. FIG.
Although not shown in the figure, a leg that can be grounded when the device 1 is installed is provided on the lower surface side of the connecting portion 76. Further, the connecting portion 76 is an extension portion 77 extending rightward in the drawing.
It has. Although not shown in the drawing, the lower portion of the flange 61 of the slide member 51 of the attaching means 26 is partially cut away to form a flat surface, and this flat surface portion is placed on the extension portion 77. Therefore, the extension portion 77 provides a means for preventing the rotation of the slide member 51.
【００２４】バイパス管２５の三方弁５の第２流出口１
１に接続される端部の近くに、ドレインバルブ７８が取
り付けられている。このドレインバルブ７８は公知のタ
イプのものでよいので、詳細な説明は省略する。Second outlet 1 of three-way valve 5 of bypass pipe 25
A drain valve 78 is mounted near the end connected to 1. Since the drain valve 78 may be of a known type, detailed description thereof will be omitted.
【００２５】また、三方弁５の第１流出口９には、空気
排出用の排気ドレインバルブ９１が取り付けられてお
り、図３の部分断面図で説明すると、三方弁５の第１流
出口の外周上部にドレインバルブ取付け座１２が僅かに
***して形成されている。そしてその上面からボール押
さえ２７の貫通孔２８に達する孔が形成され、雌ねじ１
０が刻設されている。符号９３はドレインネジであり、
頭部９４とネジ部９５を備え、このネジ部９５がドレイ
ンバルブ取付け座１２の雌ねじ１０に螺合する。９７は
パッキンであり、ドレインバルブ取付け座１２の上面と
ドレインネジ９３の頭部９４との間で圧縮され、気密、
液密を保つ。ドレインネジ９３のネジ部９５は、図４に
示すように、軸方向全長に渡って平面状にカットして形
成されたカット面９６が対向して設けられている。従っ
て、このドレインネジ９３を緩めると、貫通孔２８の内
部は、外気に通じることとなる。このドレインバルブ９
１の使用については後述する。なお、図３において符号
６は三方弁５内に収納されたボール弁体、８はボール弁
体６に形成された流路、１４はボールシートである。Further, an exhaust drain valve 91 for discharging air is attached to the first outlet 9 of the three-way valve 5, which will be described with reference to the partial sectional view of FIG. A drain valve mounting seat 12 is formed on the upper portion of the outer periphery so as to be slightly raised. Then, a hole reaching from the upper surface to the through hole 28 of the ball retainer 27 is formed, and the female screw 1
0 is engraved. Reference numeral 93 is a drain screw,
A head portion 94 and a screw portion 95 are provided, and the screw portion 95 is screwed into the female screw 10 of the drain valve mounting seat 12. 97 is a packing, which is compressed between the upper surface of the drain valve mounting seat 12 and the head 94 of the drain screw 93 to be airtight,
Keep liquid tight. As shown in FIG. 4, the threaded portion 95 of the drain screw 93 is provided with a cut surface 96 formed by being cut in a planar shape over the entire axial length so as to face each other. Therefore, when the drain screw 93 is loosened, the inside of the through hole 28 communicates with the outside air. This drain valve 9
The use of 1 will be described later. In FIG. 3, reference numeral 6 is a ball valve element housed in the three-way valve 5, 8 is a flow path formed in the ball valve element 6, and 14 is a ball seat.
【００２６】量水器２を装置１に取り付けるには、先ず
取付け手段２６の回転筒３５を一方向に回転させて、ス
ライド部材５１を図２に２点鎖線で示される位置に後退
させておく。量水器２を量水器受け台に載せ、仕切弁２
３のフランジ２３ａのピン２３ｂを量水器２のフランジ
４の孔４ａに嵌める。次に、取付け手段２６の回転筒３
５を先と反対方向に回転させて、スライド部材５１を図
２に実線で示される位置に前進させる。ここで、三方弁
５において、流入口７と第１流出口９とが連通され、仕
切弁２３が開かれると、水は、流入口７から第１流出口
９、取付け手段２６のスライド部材５１の貫通孔５２、
量水器２、仕切弁２３、チーズ１５の第１流入口１７、
流出口２１へと流れ、第１の流路を形成する。In order to mount the water meter 2 on the apparatus 1, first, the rotary cylinder 35 of the mounting means 26 is rotated in one direction to retract the slide member 51 to the position shown by the chain double-dashed line in FIG. . Place the water meter 2 on the water meter cradle and turn on the sluice valve 2.
The pin 23b of the flange 23a of No. 3 is fitted into the hole 4a of the flange 4 of the water meter 2. Next, the rotary cylinder 3 of the mounting means 26
5 is rotated in the opposite direction to advance the slide member 51 to the position shown by the solid line in FIG. Here, in the three-way valve 5, when the inflow port 7 and the first outflow port 9 are communicated with each other and the sluice valve 23 is opened, water flows from the inflow port 7 to the first outflow port 9 and the slide member 51 of the mounting means 26. Through hole 52,
Water meter 2, sluice valve 23, first inlet 17 of cheese 15,
It flows to the outlet 21 and forms a first flow path.
【００２７】他方、三方弁５において流入口７と第２流
出口１１が連通され、仕切弁２３が閉じられると、水
は、流入口７から第２流出口１１、バイパス管２５、チ
ーズ１５の第２流入口１９、流出口２１へと流れ、第２
の流路を形成する。即ち、三方弁５と仕切弁２３とは第
１と第２の流路を切り換える流路切替え手段を提供する
こととなる。On the other hand, when the inflow port 7 and the second outflow port 11 are communicated with each other in the three-way valve 5 and the sluice valve 23 is closed, water flows from the inflow port 7 to the second outflow port 11, the bypass pipe 25 and the cheese 15. Flow to the second inflow port 19 and the outflow port 21,
To form a flow path. That is, the three-way valve 5 and the sluice valve 23 provide a passage switching means for switching the first and second passages.
【００２８】通常の使用状態では、第１の流路を画成し
て使用されるが、例えば量水器の交換作業を行う際に
は、先ずドレインバルブ７８を一定時間開いて、バイパ
ス管２５内に滞留している水を抜く。次にドレインバル
ブ７８を閉じ、三方弁５の連通を切替え、仕切弁を閉じ
ると、先に述べた第２の流路が画成される。この状態で
回転筒７４を回転させてスライド部材を後退させる。こ
れにより、量水器２は装置１から取り外すことが出来
る。この取り替え作業を行っている場合にも、第２の流
路が画成されているので、断水状態にはならない。In a normal use state, the first flow path is defined and used. For example, when the water meter is replaced, the drain valve 78 is first opened for a certain period of time to bypass the bypass pipe 25. Drain the water remaining inside. Next, when the drain valve 78 is closed, the communication of the three-way valve 5 is switched, and the sluice valve is closed, the second flow path described above is defined. In this state, the rotary cylinder 74 is rotated to retract the slide member. This allows the water meter 2 to be removed from the device 1. Even when this replacement work is performed, the water flow is not cut off because the second flow path is defined.
【００２９】ところで、量水器２の装置１への取付けが
完了した時点では、三方弁５の第１流出口９から取付け
手段２６、量水器２を通って仕切弁２３に通じる流路部
分には空気が存在している。水の流れが第２流路から第
１流路へ切り換えられたときに、この空気がそのまま下
流側へ流れると、先に述べたような問題が生じる。そこ
で、流路を第２流路から第１２流路に切り換えるのに先
立ち、三方弁５はそのままの状態で、仕切弁２３を開
き、排気ドレインバルブ９１を開く。すると、バイパス
管２５からの水は、仕切弁２３から量水器２を通って第
１流出口へ向かっても流れることとなる。これにより、
この流路部分に存在した空気が排気ドレインバルブ９１
から排気される。その後、排気ドレインバルブ９１を締
め、三方弁５を切り換えると、水は第１流路を通って流
れるようになる。この際、既に空気が排出されてしまっ
ているので、先に述べたようなブースタポンプのエアー
ロック等の問題は生じない。By the way, at the time when the attachment of the water meter 2 to the device 1 is completed, the flow path portion leading from the first outlet 9 of the three-way valve 5 through the attachment means 26, the water meter 2 to the sluice valve 23. There is air in. If the air flows to the downstream side as it is when the flow of water is switched from the second flow path to the first flow path, the problems described above occur. Therefore, prior to switching the flow path from the second flow path to the twelfth flow path, the gate valve 23 is opened and the exhaust drain valve 91 is opened while the three-way valve 5 is left as it is. Then, the water from the bypass pipe 25 also flows from the sluice valve 23 through the water meter 2 toward the first outlet. This allows
The air existing in this flow path portion is the exhaust drain valve 91.
It is exhausted from. After that, when the exhaust drain valve 91 is closed and the three-way valve 5 is switched, water comes to flow through the first flow path. At this time, since the air has already been discharged, the above-mentioned problem such as the air lock of the booster pump does not occur.
【００３０】図５は第２の実施例を示し、量水器の連結
部がネジ式になっている場合の実施例を示す部分断面図
で、装置１と量水器２との連結部分のみを示している。
量水器２の連結部８１は雄ねじとなっている。これに対
し、装置１の取付け手段のスライド部材の端部には、径
方向外方へ広がる鍔部８３と、該鍔部８３から軸方向に
伸びる短い筒部８５を備えられ、筒部８５が図示のよう
に量水器２の連結部に嵌合するようになっている。そし
て、鍔部８３の端面に形成された溝内に収受されたシー
ルリング８７が圧縮されて、量水器２の連結部８１の端
面と、スライド部材の端面との間をシールする。スライ
ド部材の筒部８５の下部は一部カットされ、先の実施例
同様、スライド部材の回転を規制する役目を果たす。FIG. 5 is a partial sectional view showing a second embodiment in which the connecting portion of the water meter is of a screw type, and only the connecting portion between the device 1 and the water meter 2 is shown. Is shown.
The connecting portion 81 of the water meter 2 is a male screw. On the other hand, the end of the slide member of the mounting means of the device 1 is provided with a flange portion 83 that expands radially outward and a short tubular portion 85 that extends from the flange portion 83 in the axial direction. As shown in the figure, it fits into the connecting portion of the water meter 2. Then, the seal ring 87 received in the groove formed on the end surface of the collar portion 83 is compressed to seal between the end surface of the connecting portion 81 of the water meter 2 and the end surface of the slide member. A part of the lower portion of the tubular portion 85 of the slide member is cut so as to regulate the rotation of the slide member as in the previous embodiment.
【００３１】図６に第３実施例に係る装置の一部切欠き
側面図を示す。この実施例は、以下に説明する部分を除
いては第１実施例と同じ構成になっているので、図に
は、本実施例の第１実施例と異なる構成の説明に必要な
部分のみを示してある。なお、第１実施例と同じ部材に
は同じ番号を付してある。FIG. 6 shows a partially cutaway side view of the device according to the third embodiment. This embodiment has the same configuration as the first embodiment except for the portions described below, and therefore only the portions necessary for explaining the configuration different from the first embodiment of the present embodiment are shown in the drawing. It is shown. The same members as those in the first embodiment are designated by the same reference numerals.
【００３２】この装置１０１の第２接続手段としてのチ
ーズ１５の第２流入口１９は、第１流入口１７と流出口
２１とを繋ぐ流路１０３の途中の開口１０４に連通して
いる。そして、本実施例の特徴である細いパイロット管
１０５が設けられ、その一端１０７が、チーズ１５の第
１流入口１７より下流で、開口１０４より上流の位置で
チーズに連結され、他端１０９が、バイパス管１２１の
第１接続手段即ち三方弁５の第２流出口１１に近い位置
で、バイパス管１２１に連結されている。パイロット管
１０５の一端１０７はチーズ１５内の流路１０３内に位
置し、図示のように上流側を向いて開口している。一
方、パイロット管１０５の他端１０９は、バイパス管１
２１内で下流側を向いて開口している。本実施例では、
第１実施例で使用されていたドレインバルブ７８が廃さ
れている。なお、符号１１１は、差圧発生手段としての
オリフィスであり、パイロット管の一端１０９と開口１
０４との間に位置して設けられている。差圧発生手段と
しては、ベンチュリー管等の利用も可能である。The second inflow port 19 of the cheese 15 serving as the second connecting means of the apparatus 101 communicates with the opening 104 in the middle of the flow path 103 connecting the first inflow port 17 and the outflow port 21. Then, a thin pilot pipe 105, which is a feature of this embodiment, is provided, one end 107 of which is connected to cheese at a position downstream of the first inlet 17 of the cheese 15 and upstream of the opening 104, and the other end 109 thereof. The bypass pipe 121 is connected to the bypass pipe 121 at a position close to the first connection means, that is, the second outlet 11 of the three-way valve 5. One end 107 of the pilot pipe 105 is located in the flow path 103 in the cheese 15, and opens toward the upstream side as shown in the drawing. On the other hand, the other end 109 of the pilot pipe 105 is connected to the bypass pipe 1
The inside of 21 is open to the downstream side. In this embodiment,
The drain valve 78 used in the first embodiment is eliminated. Incidentally, reference numeral 111 is an orifice as a differential pressure generating means, which is one end 109 of the pilot pipe and the opening 1.
It is located between 04 and 04. A Venturi tube or the like can be used as the differential pressure generating means.
【００３３】この第３実施例の場合、上述のようにパイ
ロット管１０５が設けられているので、チーズ１５の第
１流入口１７に流れ込んだ水の一部は、パイロット管１
０５を通ってバイパス管１２１内へ導かれる。そして、
パイロット管１０５の流入側端部１０７での水圧がそれ
より下流の開口１０４での水圧より高いので、バイパス
管１２１内に入った水は開口１０４へ流れ、流出口２１
へと流れる。従って、バイパス管１２１内に水は滞留し
ないので、量水器交換作業の際にバイパス管１２１部分
の水抜きを行うこと無く、直ちに三方弁５及び仕切弁２
３を操作して、流路の切替えを行える。その際、差圧発
生手段としてオリフィス１１１が設けられているので、
仮に流量が僅かの場合でも、パイロット管１０５の両端
部１０７、１０９の間には、パイロット管１０５を通る
水の流れが生じるに十分な圧力差が確実に生る。なお、
排気ドレインバルブ９１が第１実施例同様に設けられて
おり、量水器交換作業完了後、必要な排気作業が行われ
たのちに流路の切替えが行われるのは、第１実施例と同
じである。In the case of the third embodiment, since the pilot pipe 105 is provided as described above, a part of the water flowing into the first inflow port 17 of the cheese 15 is part of the pilot pipe 1.
It is led into the bypass pipe 121 through 05. And
Since the water pressure at the inflow-side end 107 of the pilot pipe 105 is higher than the water pressure at the downstream opening 104, the water that has entered the bypass pipe 121 flows to the opening 104 and the outlet 21
Flows to. Therefore, since water does not stay in the bypass pipe 121, the three-way valve 5 and the sluice valve 2 can be immediately used without draining the bypass pipe 121 during the water meter replacement work.
3 can be operated to switch the flow path. At that time, since the orifice 111 is provided as the differential pressure generating means,
Even if the flow rate is small, a sufficient pressure difference is generated between both ends 107 and 109 of the pilot pipe 105 so that the flow of water through the pilot pipe 105 is generated. In addition,
The exhaust drain valve 91 is provided as in the first embodiment, and after the water meter replacement work is completed, the flow path is switched after the necessary exhaust work is performed, as in the first embodiment. Is.
【００３４】なお、上記実施例では、排気用ドレインバ
ルブ９１は三方弁の第１流出口に設けたが、その取付け
位置は必ずしもこれに限定されない。上記説明から明ら
かなように、第１流路のいずれの位置でも可能であり、
仕切弁に近い位置でも可能である。但し、空気の残留量
を少なくするために、可能なかぎり高い位置が望まし
い。In the above embodiment, the exhaust drain valve 91 is provided at the first outlet of the three-way valve, but its mounting position is not necessarily limited to this. As is clear from the above description, any position in the first flow path is possible,
It is possible even at a position close to the gate valve. However, in order to reduce the residual amount of air, it is desirable that the position is as high as possible.
【００３５】[0035]
【発明の効果】以上の説明から明らかな通り、本発明に
よれば、量水器等の水道機器の検査或いは交換を行う場
合にも、断水させずにその作業を行うことが出来、水道
の使用者、水道工事実施者の双方にとって極めて好都合
である。そして、水道機器の装置への取付け、取り外し
が簡単に行えるので、作業能率が向上する。さらに、水
道機器の交換取付け完了後、この交換作業の際に進入し
た流路内の空気を排出できるので、ブースタポンプのエ
アーロック等のトラブルを未然に防止でき、きわめてそ
の効果は大きい。As is apparent from the above description, according to the present invention, even when inspecting or replacing a water supply device such as a water meter, the work can be performed without interruption of the water supply. It is extremely convenient for both users and waterworks operators. Further, since the water equipment can be easily attached to and detached from the device, work efficiency is improved. Furthermore, after the replacement and installation of the water supply equipment is completed, the air in the flow path that has entered during this replacement work can be discharged, so troubles such as an air lock of the booster pump can be prevented, and the effect is extremely great.
【００３６】また、バイパス管にドレインバルブを取り
付けておいた場合には、流路の切替え前にバイパス管内
の滞留水を排水できる。Further, when the drain valve is attached to the bypass pipe, the accumulated water in the bypass pipe can be drained before switching the flow path.
【００３７】さらにパイロット管を使用して、第２接続
手段の第１流入口に入った水の一部をバイパス管に導く
ようにした場合には、バイパス管内に下流側への水の流
れが生じ、バイパス管内に水の滞留が生じない。従っ
て、流路切替え前の排水作業を行う必要がなく、作業効
率がさらに向上する。Further, when a part of the water having entered the first inlet of the second connecting means is guided to the bypass pipe by using the pilot pipe, the flow of water to the downstream side in the bypass pipe. No water is retained in the bypass pipe. Therefore, it is not necessary to perform drainage work before switching the flow path, and work efficiency is further improved.
【図１】本発明の一実施例にかかる装置の構成を示す平
面図である。FIG. 1 is a plan view showing a configuration of an apparatus according to an embodiment of the present invention.
【図２】取付け手段の構成を示す部分断面図である。FIG. 2 is a partial cross-sectional view showing the structure of a mounting means.
【図３】排気ドレインバルブを示す部分拡大断面図であ
る。FIG. 3 is a partially enlarged cross-sectional view showing an exhaust drain valve.
【図４】排気ドレインネジの側面図である。FIG. 4 is a side view of an exhaust drain screw.
【図５】第２実施例の量水器と取付け手段との結合を示
す部分断面図である。FIG. 5 is a partial cross-sectional view showing the connection between the water meter and the mounting means of the second embodiment.
【図６】第３実施例の一部切り欠き側面図である。FIG. 6 is a partially cutaway side view of the third embodiment.
１ 装置 ２ 量水器 ３、４ 連結部（フランジ） ５ 三方弁（第１接続手段、流路切替え手段） ７ 流入口 ９ 第１流出口 １１ 第２流出口 １５ チーズ（第２接続手段） １７ 第１流入口 １９ 第２流入口 ２１ 流出口 ２３ 仕切弁（流路切替え手段） ２５ バイパス管 ２６ 取付け手段 ３３ 回転部材 ３５ 回転筒 ４１ ナット ５１ スライド部材 ７８ ドレインバルブ ９１ 排気ドレインバルブ １０５ パイロット管 １２１ オリフィス DESCRIPTION OF SYMBOLS 1 Device 2 Water meter 3, 4 Connection part (flange) 5 Three-way valve (1st connection means, flow-path switching means) 7 Inflow port 9 1st outflow port 11 2nd outflow port 15 Cheese (2nd connection means) 17 1st inflow port 19 2nd inflow port 21 Outflow port 23 Gate valve (flow path switching means) 25 Bypass pipe 26 Attachment means 33 Rotating member 35 Rotating cylinder 41 Nut 51 Sliding member 78 Drain valve 91 Exhaust drain valve 105 Pilot pipe 121 Orifice
Claims (8)
めの接続装置において、一方の配管の端部と前記水道機
器の一方の流路連結部とを接続する、一つの流入口と第
１と第２の流出口とを備えた第１接続手段と、他方の配
管の端部と前記水道機器の他方の流路連結部とを接続す
る、第１と第２の流入口と一つの流出口とを備えた第２
接続手段と、前記第１接続手段の第２流出口と前記第２
接続手段の第２流入口とに接続された、前記水道機器を
迂回することとなるバイパス管と、前記第１接続手段の
第１流出口と前記水道機器と前記第２接続手段の第１流
入口とを通る第１の流路と、前記第１接続手段の第２流
出口と前記バイパス管と前記第２接続手段の第２流入口
とを通る第２の流路との間で水の流れを切り替える流路
切替え手段と、前記水道機器を前記接続装置へ着脱自在
に取り付ける取付け手段とを備え、前記流路切替え手段
は、前記第２接続手段の前記第１の流入口と前記水道機
器の前記他方の連結部との間の連通を開閉する弁装置を
含み、前記装置はさらに、前記第１の流路内の空気を排
出するための排気ドレインバルブを備えていることを特
徴とする水道機器の配管接続用装置。1. A connecting device for connecting a water supply device such as a water meter to a pipe, comprising one inflow port for connecting an end portion of one pipe and one flow path connecting portion of the water supply device. One of the first and second inflow ports, which connects the first connecting means having the first and second outflow ports and the other end of the pipe to the other flow path connecting part of the water supply device. Second with two outlets
Connecting means, a second outlet of the first connecting means and the second
A bypass pipe connected to the second inlet of the connecting means and bypassing the water supply device, a first outlet of the first connecting means, the water supply device, and a first flow of the second connecting means. Water between a first flow passage through the inlet and a second flow passage through the second outlet of the first connecting means, the bypass pipe and the second inlet of the second connecting means. A flow path switching means for switching the flow and an attachment means for detachably attaching the water supply device to the connection device are provided, and the flow path switching means includes the first inlet port of the second connection means and the water supply device. A valve device for opening and closing communication with the other connection part of the device, the device further comprising an exhaust drain valve for exhausting air in the first flow path. Equipment for pipe connection of water equipment.
え手段は、前記第１接続手段の前記流入口と前記第１の
流出口との連通を開閉する開閉手段を含み、前記ドレイ
ンバルブは、前記開閉手段の下流側に設けられているこ
とを特徴とする水道機器の配管接続用装置。2. The apparatus according to claim 1, wherein the switching means includes opening / closing means for opening / closing communication between the inflow port of the first connecting means and the first outflow port, and the drain valve includes: A pipe connecting device for water equipment, which is provided on the downstream side of the opening / closing means.
手段は、前記第１接続手段に設けられた三方弁であるこ
とを特徴とする水道機器の配管接続用装置。3. The apparatus for connecting pipes of water equipment according to claim 2, wherein the opening / closing means is a three-way valve provided in the first connecting means.
置において、前記第２接続手段の前記第２の流入口は、
前記第１の流入口と前記流出口とを繋ぐ流路の途中で該
流路に開口し、前記装置はさらに、一端が、前記第２接
続手段の前記第１の流入口と前記第２の流入口との間で
前記流路に連通し、他端が、前記バイパス管の途中に連
通しているパイロット管を備えていることを特徴とする
水道機器の配管接続用装置。4. The apparatus according to claim 1, wherein the second inlet of the second connecting means is
The device opens at a midway of a flow path connecting the first inflow port and the outflow port, and the device further has one end at which the first inflow port and the second flow port of the second connecting means are connected. An apparatus for connecting pipes of water equipment, comprising a pilot pipe communicating with the flow path between the inlet and the other end and communicating with the other end in the middle of the bypass pipe.
はさらに、前記第１の流入口と前記流出口とを繋ぐ流路
内で、前記パイロット管の前記一端と、前記第２接続手
段の前記第２流入口の開口位置との間に設けられた、差
圧発生手段を備えていることを特徴とする水道機器の配
管接続用装置。5. The device according to claim 4, wherein the device further comprises: the one end of the pilot pipe and the second connecting means in a flow path connecting the first inlet and the outlet. An apparatus for connecting pipes of water equipment, comprising a differential pressure generating means provided between the second inflow port and an opening position of the second inflow port.
て、前記パイロット管の前記一端は、前記第１の流入口
と流出口とを繋ぐ流路内で、上流側に向いて開口してい
ることを特徴とする水道機器の配管接続用装置。6. The device according to claim 4 or 5, wherein the one end of the pilot pipe is opened toward the upstream side in a flow path connecting the first inflow port and the outflow port. A device for connecting pipes of water equipment, which is characterized in that
置において、前記取付け手段は、前記第１の流路の一部
を形成する貫通流路を備え、前記貫通流路の一端側にお
いて前記第１接続手段と前記第２接続手段のいずれか一
方に取り付けられ、外部から操作することにより伸長
し、前記貫通流路の他端側が前記水道機器のいずれかの
流路連結部の端部に当接し、前記水道機器を前記第１接
続手段と前記第２接続手段のうちの他方へ向けて押圧
し、前記水道機器を該接続装置に着脱自在に取り付け固
定する、伸縮可能な取り付け手段とを有することを特徴
とする水道機器の配管接続用装置。7. The apparatus according to claim 1, wherein the attaching means includes a through flow passage forming a part of the first flow passage, and one end side of the through flow passage. In one of the first connecting means and the second connecting means, and is extended by operating from the outside, and the other end side of the through passage is the end of the passage connecting portion of any of the water supply equipment. Part that abuts against the portion and presses the water supply device toward the other of the first connection means and the second connection means to detachably attach and fix the water supply device to the connection device. A device for connecting pipes of water equipment, which comprises:
付け手段は、前記第１接続手段の第１の流出口或いは前
記第２接続手段の流入口のいずれかに、回転可能、軸方
向移動不能の状態で取り付けられた回転部材と、該回転
部材とネジ結合されたスライド部材と、該スライド部材
の回転を規制する回転規制部材とを含み、前記回転部材
を回転させることにより、前記スライド部材が軸方向移
動することとなっていることを特徴とする水道機器の配
管接続用装置。8. The apparatus according to claim 7, wherein the attaching means is rotatable or axially immovable in either the first outlet of the first connecting means or the inlet of the second connecting means. In a state of including a rotating member, a slide member screw-connected to the rotating member, and a rotation restricting member that restricts rotation of the slide member, and by rotating the rotating member, the slide member is A device for connecting pipes of water equipment, which is characterized by axial movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7171640A JP3042974B2 (en) | 1995-06-15 | 1995-06-15 | Equipment for connecting pipes to water equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7171640A JP3042974B2 (en) | 1995-06-15 | 1995-06-15 | Equipment for connecting pipes to water equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH093985A true JPH093985A (en) | 1997-01-07 |
| JP3042974B2 JP3042974B2 (en) | 2000-05-22 |
Family
ID=15926960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7171640A Expired - Fee Related JP3042974B2 (en) | 1995-06-15 | 1995-06-15 | Equipment for connecting pipes to water equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3042974B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013151789A (en) * | 2012-01-24 | 2013-08-08 | Nippo Valve Co Ltd | Meter bypass unit |
-
1995
- 1995-06-15 JP JP7171640A patent/JP3042974B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3042974B2 (en) | 2000-05-22 |
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