JPH02138580A - Air valve - Google Patents
Air valveInfo
- Publication number
- JPH02138580A JPH02138580A JP29053288A JP29053288A JPH02138580A JP H02138580 A JPH02138580 A JP H02138580A JP 29053288 A JP29053288 A JP 29053288A JP 29053288 A JP29053288 A JP 29053288A JP H02138580 A JPH02138580 A JP H02138580A
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- valve
- float
- air
- balance
- 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
Links
- 239000007788 liquid Substances 0.000 abstract description 24
- 230000007423 decrease Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 2
Landscapes
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、空気弁に関するものである。[Detailed description of the invention] Industrial applications The present invention relates to pneumatic valves.
従来の技術
従来より、上・下水管等の管路に取り付けられ、管路内
の空気を排気する空気弁の一つに、第２図に示すような
ものがある。この空気弁１は、ケーシング２内にフロー
ト弁３を昇降可能に備えてなるものである。フロート弁
３は、弁棒４の下端部にフロート５と上端部に弁体６と
を備えてなり、弁棒４が弁棒受け７により昇降可能に支
持されている。弁棒受け７には、弁棒受け７の上下の空
間を連通する通気孔８が設けられている。ケーシング２
内の弁体６上方に弁Ｎ９が設けられることにより、ケー
シング２内が弁座９の下方のフロート室１０と、弁座９
の上方の排気室１１とに仕切られている。排気室１１に
は、排気室１１を大気に連通ずる排気孔１２が設けられ
ている。１３は弁体６に設けられたゴム製等のシール部
材で、弁体６と弁座９との間の水密を保つためのもので
ある。2. Description of the Related Art Conventionally, there is an air valve shown in FIG. 2, which is attached to pipes such as upper and sewer pipes and exhausts air from the pipes. This air valve 1 includes a float valve 3 inside a casing 2 so as to be movable up and down. The float valve 3 includes a float 5 at the lower end of a valve stem 4 and a valve body 6 at the upper end, and the valve stem 4 is supported by a valve stem support 7 so as to be movable up and down. The valve stem receiver 7 is provided with a vent hole 8 that communicates the space above and below the valve stem receiver 7. Casing 2
By providing the valve N9 above the valve body 6 inside the casing 2, the inside of the casing 2 is connected to the float chamber 10 below the valve seat 9 and the valve seat 9.
It is partitioned into an upper exhaust chamber 11. The exhaust chamber 11 is provided with an exhaust hole 12 that communicates the exhaust chamber 11 with the atmosphere. Reference numeral 13 denotes a sealing member made of rubber or the like provided on the valve body 6 to maintain watertightness between the valve body 6 and the valve seat 9.
空気弁１は、接続管１４を介して管路１５上に立設され
る。フロート室１０内が空のときは、フロート弁３が下
降して弁体６は弁座９から離れ（第２図中、２点鎖線で
示す、）、フロート室１０は排気室１１を介して大気に
連通している。管路１５内の液体がフロート室１０内に
流入して来ると、フロート室１０内の空気は排気孔１２
から大気中に排気され、液面の上昇につれてフロート弁
３が浮上し、弁体６が弁座９に当接してフロート室１０
を排気室１１からしゃ断し、液体が外部にあふれ出るの
を防止する。The air valve 1 is installed upright on a conduit 15 via a connecting pipe 14. When the inside of the float chamber 10 is empty, the float valve 3 is lowered and the valve body 6 is separated from the valve seat 9 (indicated by a two-dot chain line in FIG. 2). communicates with the atmosphere. When the liquid in the pipe line 15 flows into the float chamber 10, the air in the float chamber 10 flows through the exhaust hole 12.
is exhausted into the atmosphere, and as the liquid level rises, the float valve 3 floats up, and the valve body 6 comes into contact with the valve seat 9, causing the float chamber 10 to rise.
is shut off from the exhaust chamber 11 to prevent the liquid from overflowing to the outside.
管路１５内の液体が減少し、フロート室１０内の液面が
下降すると、フロート弁３が下降し、弁体６が弁座９か
ら離れてフロート室１０を排気室１１に連通ずる。この
ようにして、管路１５内の液量の変動に対応して、管路
１５内の空気を排気するのである。When the liquid in the pipe line 15 decreases and the liquid level in the float chamber 10 falls, the float valve 3 descends, the valve body 6 separates from the valve seat 9, and the float chamber 10 is communicated with the exhaust chamber 11. In this way, air in the pipe line 15 is exhausted in response to fluctuations in the amount of liquid in the pipe line 15.
発明が解決しようとする課題
しかし、上記従来の空気弁１においては、フロート室１
０内に液体が流入して弁体６が弁座９に当接した後は、
フロート室１０内の残留空気の圧力が上昇する。したが
って、次に管路１５内の液量が減少し、フロート室１０
内の液面が下降しても、上記残留空気の圧力が弁体６の
背面に作用しているなめ、この圧力が無くなるまでフロ
ート弁３が円滑に作動しないという問題があった。Problems to be Solved by the Invention However, in the conventional air valve 1 described above, the float chamber 1
After the liquid flows into the valve body 6 and the valve seat 9 comes into contact with the valve seat 9,
The pressure of the residual air within the float chamber 10 increases. Therefore, next, the amount of liquid in the pipe line 15 decreases, and the float chamber 10
Even if the liquid level inside the float valve drops, the pressure of the residual air still acts on the back surface of the valve body 6, so there is a problem that the float valve 3 does not operate smoothly until this pressure disappears.
本発明は、このような従来の問題点を解決し、内圧に関
係なく作動することができる空気弁を提供することを目
的とする。SUMMARY OF THE INVENTION An object of the present invention is to solve these conventional problems and provide an air valve that can operate regardless of internal pressure.
課題を解決するための手段
上記目的を達成するために、本発明の空気弁は、管路に
取り付けられ、ケーシング内に備えたフロート弁の昇降
により管路内の空気を排気する空気弁において、フロー
ト弁が弁棒の下端部にフロートと上端部に弁体とを備え
てなり、弁体が下部の主弁部と上部の釣合弁部とからな
り、ケーシング内の主弁部上方と釣合弁部上方とに主弁
座面と釣合弁座面とが形成されることにより、ケーシン
グ内が主弁座面下方のフロート室と、主弁座面と釣合弁
座面との間の排気室と、釣合弁座面上方の釣合空気室と
に仕切られ、排気室を大気に連通ずる排気孔が排気室に
設けられ、フロート室と釣合空気室とを連通する連通孔
が弁体に設けられた構成としたものである。Means for Solving the Problems In order to achieve the above object, the air valve of the present invention is an air valve that is attached to a pipe line and exhausts air in the pipe line by raising and lowering a float valve provided in a casing. The float valve includes a float at the lower end of the valve rod and a valve body at the upper end. By forming the main valve seat surface and the balance valve seat surface above the casing, the inside of the casing becomes a float chamber below the main valve seat surface and an exhaust chamber between the main valve seat surface and the balance valve seat surface. The balance valve is partitioned into a balancing air chamber above the seat surface, an exhaust hole is provided in the exhaust chamber to communicate the exhaust chamber with the atmosphere, and a communication hole is provided in the valve body to communicate the float chamber and the balance air chamber. The structure is as follows.
作用
上記本発明の構成において、フロート室内が空のときは
、フロート弁が下降して、主弁部と釣合弁部とはそれぞ
れの主弁座面と釣合弁座面とがら離れ、フロート室と釣
合空気室とは排気室を介して大気に連通している。管路
内の液体がフロート室内に流入して来ると、フロート室
内の空気は排気孔から大気中に排気され、液面の上昇に
つれてフロート弁が浮上し、主弁部が主弁座面に当接し
てフロート室を排気室からしゃ断し、液体が外部にあふ
れ出るのを防止する。同時に、釣合弁部が釣合弁座面に
当接して釣合空気室を排気室からしや断する。このとき
、釣合空気室は弁体の連通孔を介してフロート室に連通
している。この後も、フロート室内と釣合空気室内との
残留空気の圧力が上昇する。Operation In the structure of the present invention described above, when the float chamber is empty, the float valve is lowered, and the main valve portion and the balance valve portion are separated from each other by separating the main valve seat surface and the balance valve seat surface, and the float chamber and the balance valve portion are separated from each other. The combined air chamber communicates with the atmosphere via an exhaust chamber. When the liquid in the pipe flows into the float chamber, the air in the float chamber is exhausted to the atmosphere from the exhaust hole, and as the liquid level rises, the float valve floats up and the main valve part touches the main valve seat. This closes the float chamber to the exhaust chamber and prevents liquid from overflowing to the outside. At the same time, the balance valve portion abuts against the balance valve seat surface to cut off the balance air chamber from the exhaust chamber. At this time, the balancing air chamber communicates with the float chamber via the communication hole of the valve body. Even after this, the pressure of the residual air in the float chamber and the balance air chamber increases.
しかし、主弁部の背面に上向きに作用するフロート室内
の空気圧力と、釣合弁部の表面に下向きに作用する釣合
空気室内の空気圧力とは、フロート室と釣合空気室とが
連通しているので、大きさが等しく、方向が反対であり
、互いに釣り合っている。したがって、フロート弁は、
ケーシング内の空気圧力に関係なく、フロートの浮力の
みにより作動しうる状態にある。それ故、次に、管路内
の液量が減少してフロート室内の液面が下降したときは
、フロート弁も直ちに円滑に下降し、主弁部と釣合弁部
とが同時にそれぞれの主弁座面と釣合弁座面とから離れ
、フロート室と釣合空気室とを排気室に連通ずる。この
ようにして、管路内の液量の変動に即応して、管路内に
空気を給排気することができるのである。However, the air pressure in the float chamber that acts upward on the back of the main valve part and the air pressure in the balance air chamber that acts downward on the surface of the balance valve part means that the float chamber and the balance air chamber communicate with each other. Therefore, they are equal in magnitude, opposite in direction, and in balance with each other. Therefore, the float valve is
It is in a state where it can be operated only by the buoyancy of the float, regardless of the air pressure inside the casing. Therefore, next time when the liquid level in the float chamber decreases due to a decrease in the amount of liquid in the pipe, the float valve will also immediately and smoothly descend, and the main valve part and the balance valve part will simultaneously open their respective main valves. Separated from the seat surface and the balance valve seat surface, the float chamber and the balance air chamber are communicated with the exhaust chamber. In this way, air can be pumped into and out of the pipe in response to changes in the amount of liquid in the pipe.
実施例 以下、本発明の一実施例を第１図に基づいて説明する。Example An embodiment of the present invention will be described below with reference to FIG.
第１図において、２１は本実施例の空気弁である。In FIG. 1, 21 is the air valve of this embodiment.
この空気弁２１は、ケーシング２２内にフロート弁２３
を昇降可能に備えてなるものである。フロート弁２３は
、弁棒２４の下端部にフロート２５と上端部に弁体２６
とを備えてなり、弁棒２４の中間部がケーシング２２内
に固設されな弁棒受け２７により昇降可能に支持されて
いる。弁棒受け２７には、弁棒受け２７の上下の空間を
連通ずる通気孔２８が設けられている。This air valve 21 has a float valve 23 inside the casing 22.
It is equipped to be able to be raised and lowered. The float valve 23 has a float 25 at the lower end of the valve stem 24 and a valve body 26 at the upper end.
The intermediate portion of the valve stem 24 is supported by a valve stem receiver 27 which is fixedly installed in the casing 22 so as to be movable up and down. The valve stem receiver 27 is provided with a vent hole 28 that communicates the space above and below the valve stem receiver 27.
弁体２６は、下部の逆きのこ形の主弁部２９に上部の円
板状の釣合弁部３０が冠着されてなり、中心部を貫通す
る弁棒２４にナツト３１により固定されている。The valve body 26 has an upper disc-shaped balance valve part 30 attached to an inverted mushroom-shaped main valve part 29 at the lower part, and is fixed by a nut 31 to the valve stem 24 passing through the center part.
主弁部２９は、釣合弁部３０の外径と等しい外径を有す
る弁部３２と軸部３３とからなる。軸部３３には０リン
グ３４が設けられ、軸部３３と釣合弁部３０との間の気
密を保っている。ケーシング２２内の主弁部２９上方と
釣合弁部３０上方とに主弁座３５と釣合弁座３６とが設
けられることにより、ケーシング２２内が主弁座面３７
下方のフロート室３８と、主弁座面３７と釣合弁座面３
９との間の排気室４０と、釣合弁座面３９上方の釣合空
気室４１とに仕切られている。釣合空気室４１は、釣合
弁座３６の内側に形成されている。排気室４０には、排
気室４０を大気に連通ずる排気孔４２が設けられている
。弁体２６の中心部を貫通して、フロート室３８と釣合
空気室４１とを連通する連通孔４３が弁棒２４の周囲に
設けられ、連通孔４３の両端部には、連通孔４３をフロ
ート室３８と釣合空気室４１とに連通ずる連通溝４４が
設けられている。主弁座３５の中心部には、空気弁２１
の口径に相当する面積の孔径を有するボート４５が形成
されている。４６および４７は、主弁部２９の弁部３２
と釣合弁部３０とに設けられた環状のゴム製等のシール
部材で、弁部３２と主弁座面３７との間の気密および釣
合弁部３Ｇと釣合弁座面３９との間の気密を保つための
ものである。The main valve section 29 includes a valve section 32 having an outer diameter equal to the outer diameter of the balancing valve section 30 and a shaft section 33 . An O-ring 34 is provided on the shaft portion 33 to maintain airtightness between the shaft portion 33 and the balance valve portion 30. By providing the main valve seat 35 and the balance valve seat 36 above the main valve section 29 and above the balance valve section 30 inside the casing 22, the inside of the casing 22 becomes the main valve seat surface 37.
Lower float chamber 38, main valve seat surface 37, and balance valve seat surface 3
9 and a balancing air chamber 41 above the balancing valve seat surface 39. The balance air chamber 41 is formed inside the balance valve seat 36. The exhaust chamber 40 is provided with an exhaust hole 42 that communicates the exhaust chamber 40 with the atmosphere. A communication hole 43 is provided around the valve stem 24 through the center of the valve body 26 and communicates the float chamber 38 and the balance air chamber 41. A communication groove 44 communicating with the float chamber 38 and the balance air chamber 41 is provided. An air valve 21 is located in the center of the main valve seat 35.
A boat 45 is formed having a hole diameter of an area corresponding to the diameter of the boat. 46 and 47 are the valve part 32 of the main valve part 29
An annular sealing member made of rubber or the like provided on the balance valve part 30 and the balance valve part 30 to ensure airtightness between the valve part 32 and the main valve seat surface 37 and between the balance valve part 3G and the balance valve seat surface 39. It is intended to maintain the
次に、上記構成の空気弁２１の作用について説明する。Next, the operation of the air valve 21 having the above configuration will be explained.
空気弁２１は、接続管４８を介して管路４９の管壁上に
立設される。まず、フロート室３８内が空のときは、フ
ロート弁２３が下降して、主弁部２９の弁部３２と釣合
弁部３０とはそれぞれの主弁座面３７と釣合弁座面３９
とから離れ（第１図中、２点鎖線で示す。）、フロート
室３８と釣合空気室４１とは排気室４０を介して大気に
連通している。次に、管路４９内の液体がフロート室３
８内に流入して来ると、フロート室３８内の空気はボー
ト４５を経由して排気孔４２から大気中に排気され、液
面の上昇につれてフロート弁２３が浮上し、主弁部２９
の弁部３２が主弁座面３７に当接してフロート室３８を
排気室４０からしゃ断し、液体が外部にあふれ出るのを
防止する。同時に、釣合弁部３Ｇが釣合弁座面３９に当
接して釣合空気室４１を排気室４０からしゃ断する。こ
のとき、釣合空気室４１は弁体２６の連通孔４３および
連通溝４４を介してフロート室３８に連通している。こ
の後も、フロート室３８内と釣合空気室４１内との残留
空気の圧力が上昇する。しかし、主弁部２９の弁部３２
の背面に上向きに作用するフロート室３８内の空気圧力
と、釣合弁部３０の表面に下向きに作用する釣合空気室
４１内の空気圧力とは、フロート室３８と釣合空気室４
１とが連通しているので、大きさが等しく、方向が反対
であり、互いに釣り合っている。したがって、フロート
弁２３は、ケーシング２２内の空気圧力に関係なく、フ
ロート２５の浮力のみにより作動しうる状態になってい
る。それ故、次に、管路４９内の液量が減少してフロー
ト室３８内の液面が下降したときは、フロート弁２３も
直ちに円滑に下降し、主弁部２９の弁部３２と釣合弁部
３０とが同時にそれぞれの主弁座面３７と釣合弁座面３
９とから離れ、フロート室３８と釣合空気室４１とを排
気室４ｏに連通ずる。このようにして、管路４９内の液
量の変動に即応して、管［４９内の空気を排気するので
ある。The air valve 21 is installed upright on the pipe wall of the conduit 49 via the connecting pipe 48 . First, when the inside of the float chamber 38 is empty, the float valve 23 is lowered, and the valve part 32 of the main valve part 29 and the balance valve part 30 are separated from each other by the main valve seat surface 37 and the balance valve seat surface 39.
The float chamber 38 and the balance air chamber 41 are separated from each other (indicated by the two-dot chain line in FIG. 1), and communicate with the atmosphere via the exhaust chamber 40. Next, the liquid in the pipe line 49 is transferred to the float chamber 3.
8, the air in the float chamber 38 is exhausted to the atmosphere from the exhaust hole 42 via the boat 45, and as the liquid level rises, the float valve 23 floats up and the main valve part 29
The valve portion 32 contacts the main valve seat surface 37 to cut off the float chamber 38 from the exhaust chamber 40, thereby preventing liquid from overflowing to the outside. At the same time, the balance valve portion 3G contacts the balance valve seat surface 39 to cut off the balance air chamber 41 from the exhaust chamber 40. At this time, the balancing air chamber 41 communicates with the float chamber 38 via the communication hole 43 and the communication groove 44 of the valve body 26 . Even after this, the pressure of the residual air in the float chamber 38 and the balance air chamber 41 increases. However, the valve part 32 of the main valve part 29
The air pressure in the float chamber 38 that acts upward on the back surface of the balance air chamber 38 and the air pressure in the balance air chamber 41 that acts downward on the surface of the balance valve section 30 are the same as those in the float chamber 38 and the balance air chamber 4.
1 are in communication, so they are equal in size, opposite in direction, and balanced with each other. Therefore, the float valve 23 is in a state where it can be operated only by the buoyancy of the float 25, regardless of the air pressure inside the casing 22. Therefore, next time when the liquid level in the float chamber 38 decreases due to a decrease in the amount of liquid in the pipe line 49, the float valve 23 will immediately and smoothly descend, and will be in balance with the valve part 32 of the main valve part 29. The joint valve portion 30 simultaneously connects the respective main valve seating surface 37 and the counterbalance valve seating surface 3.
9, and communicates the float chamber 38 and the balance air chamber 41 with the exhaust chamber 4o. In this way, the air in the pipe 49 is exhausted in response to fluctuations in the amount of liquid in the pipe 49.
発明の効果
本発明は、以上説明したように、弁体が主弁部と釣合弁
部とからなり、ケーシング内が主弁座面下方のフロート
室と、主弁座面と釣合弁座面との間の排気室と、釣合弁
座面上方の釣合空気室とに仕切られ、フロート室と釣合
空気室とを連通ずる連通孔が弁体に設けられている構成
としたので、主弁部の背面に上向きに作用するフロート
室内の空気圧力と、釣合弁部の表面に下向きに作用する
釣合空気室内の空気圧力とが互いに釣り合い、フロート
弁は、ケーシング内の空気圧力に関係なく、フロートの
浮力のみにより作動することができる。Effects of the Invention As explained above, in the present invention, the valve body consists of a main valve part and a balance valve part, and the inside of the casing includes a float chamber below the main valve seat surface, a main valve seat surface, and a balance valve seat surface. The main valve is divided into an exhaust chamber between the float chamber and a balance air chamber above the balance valve seat surface, and a communication hole is provided in the valve body to communicate the float chamber and the balance air chamber. The air pressure in the float chamber that acts upward on the back surface of the balance valve part and the air pressure in the balance air chamber that acts downward on the surface of the balance valve part balance each other, and the float valve will function regardless of the air pressure in the casing. It can be operated solely by the buoyancy of the float.
したがって、空気弁は、管路内の液量の変動に即応して
、円滑に管路内の空気を排気することができる。Therefore, the air valve can smoothly exhaust the air in the pipe in response to changes in the amount of liquid in the pipe.
第１図は本発明の一実施例を示す空気弁の断面図、第２
図は従来の空気弁の一例を示す断面図である。
２１・・・空気弁、２２・・・ケーシング、２３・・・
フロート弁、２４・・・弁棒、２５・・・フロート、２
６・・・弁体、２９・・・主弁部、３０・・・釣合弁部
、３７・・・主弁座面、３８・・・フロート室、３９・
・・釣合弁座面、４０・・・排気室、４１・・・釣合空
気室、４２・・・排気孔、４３・・・連通孔、４９・・
・管路。
代理人 森 本 義 弘
第１図
２！−空気弁
２２・−η−シンク“
２’３−−−フロート弁
２４− 弁 棒
２５−−−フロート
が−一一弁 葎
ヱに−・フロート室
Δ９．−鉤合弁座面
び−・・誹ｆＬ室
４１−・釣合を気室
４２− 若ト％丸
４３−−−ゆ通孔
４９−＝・管 路FIG. 1 is a sectional view of an air valve showing one embodiment of the present invention, and FIG.
The figure is a sectional view showing an example of a conventional air valve. 21...Air valve, 22...Casing, 23...
Float valve, 24... Valve stem, 25... Float, 2
6... Valve body, 29... Main valve part, 30... Balance valve part, 37... Main valve seat surface, 38... Float chamber, 39...
...Balancing valve seat, 40...Exhaust chamber, 41...Balancing air chamber, 42...Exhaust hole, 43...Communication hole, 49...
・Pipeline. Agent Yoshihiro Morimoto Figure 1 2! - Air valve 22 - η - Sink "2'3 - Float valve 24 - Valve rod 25 - Float is - 11 valves - Float chamber Δ9. - Hook joint valve seat surface - - Rear fL chamber 41--Balance air chamber 42--Wakato% round 43--Through hole 49-=-Pipe line
Claims (1)
ト弁の昇降により管路内の空気を排気する空気弁におい
て、フロート弁が弁棒の下端部にフロートと上端部に弁
体とを備えてなり、弁体が下部の主弁部と上部の釣合弁
部とからなり、ケーシング内の主弁部上方と釣合弁部上
方とに主弁座面と釣合弁座面とが形成されることにより
、ケーシング内が主弁座面下方のフロート室と、主弁座
面と釣合弁座面との間の排気室と、釣合弁座面上方の釣
合空気室とに仕切られ、排気室を大気に連通する排気孔
が排気室に設けられ、フロート室と釣合空気室とを連通
する連通孔が弁体に設けられたことを特徴とする空気弁
。1. In an air valve that is attached to a pipeline and exhausts air in the pipeline by raising and lowering a float valve provided in a casing, the float valve has a float at the lower end of the valve stem and a valve body at the upper end. The valve body consists of a lower main valve part and an upper balance valve part, and a main valve seat surface and a balance valve seat surface are formed above the main valve part and above the balance valve part in the casing. The inside of the casing is divided into a float chamber below the main valve seat, an exhaust chamber between the main valve seat and the balance valve seat, and a balance air chamber above the balance valve seat. An air valve characterized in that an exhaust chamber is provided with an exhaust hole that communicates with the float chamber, and a communication hole that communicates with the float chamber and the balance air chamber is provided in the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29053288A JPH02138580A (en) | 1988-11-16 | 1988-11-16 | Air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29053288A JPH02138580A (en) | 1988-11-16 | 1988-11-16 | Air valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02138580A true JPH02138580A (en) | 1990-05-28 |
Family
ID=17757244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29053288A Pending JPH02138580A (en) | 1988-11-16 | 1988-11-16 | Air valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02138580A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001084027A1 (en) * | 2000-04-28 | 2001-11-08 | Kabushiki Kaisha Yokota Seisakusho | Valve device and pipeline system |
| KR100797454B1 (en) * | 2006-11-02 | 2008-01-24 | 주식회사 삼진정밀 | Waste-water of many function with air-bent |
-
1988
- 1988-11-16 JP JP29053288A patent/JPH02138580A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001084027A1 (en) * | 2000-04-28 | 2001-11-08 | Kabushiki Kaisha Yokota Seisakusho | Valve device and pipeline system |
| KR100797454B1 (en) * | 2006-11-02 | 2008-01-24 | 주식회사 삼진정밀 | Waste-water of many function with air-bent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0100657B1 (en) | Air admittance valve | |
| CN110578510B (en) | Three-phase separator system for gas well drainage process and use method | |
| US6152170A (en) | Differential relief valve for flexible sea line | |
| US1627628A (en) | Automatic control valve | |
| KR101108077B1 (en) | pilot operated safety valve and operating method using the same | |
| JP4781787B2 (en) | Exhaust valve | |
| JPH02138580A (en) | Air valve | |
| JP4694353B2 (en) | Exhaust valve | |
| CN108374921B (en) | Decompression assembly for fluid pipeline and fluid pipeline | |
| CN115264148B (en) | Water supply pipeline exhaust valve | |
| CN112648465B (en) | Water hammer eliminating tank | |
| US1846376A (en) | Fluid control for gas and liquid separators | |
| JP3811839B2 (en) | Air valve | |
| CN114877078A (en) | Negative pressure angle seat valve for vacuum sewage pipeline | |
| CN2379666Y (en) | Valve for keeping constant water level | |
| US5090439A (en) | Atmospheric compensating automatic air release valve | |
| JPH0545898Y2 (en) | ||
| CN216895876U (en) | Full-bore safety valve | |
| CN2334905Y (en) | Pneumatic pump | |
| JP2001165341A (en) | Air valve | |
| CN212928790U (en) | Blowdown integrative valve of exhaust | |
| CN217401703U (en) | Slow release exhaust valve | |
| CN203336004U (en) | Air inlet/outlet valve of variable-gravity float | |
| CN2295086Y (en) | Single-way pressure control valve | |
| JPH0213817Y2 (en) |