JPH0147673B2 - - Google Patents
Info
- Publication number
- JPH0147673B2 JPH0147673B2 JP57209080A JP20908082A JPH0147673B2 JP H0147673 B2 JPH0147673 B2 JP H0147673B2 JP 57209080 A JP57209080 A JP 57209080A JP 20908082 A JP20908082 A JP 20908082A JP H0147673 B2 JPH0147673 B2 JP H0147673B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve member
- valve body
- synthetic resin
- rib protrusions
- 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.)
- Expired
Links
- 238000007789 sealing Methods 0.000 claims description 9
- 229920003002 synthetic resin Polymers 0.000 claims description 8
- 239000000057 synthetic resin Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
Description
【発明の詳細な説明】
この発明は弁装置の改良と、とくに弁装置の弁
部材の改良を含む弁装置全体の新規構造にかんす
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in a valve system and, in particular, to a new structure of the entire valve system, including improvements to the valve member of the valve system.
とくに、弁本体も弁部材も弁棒も少くともその
要部が合成樹脂のものである弁装置においては、
とくに弁の呼称寸法が大きくなり、13インチとか
15インチ、あるいはそれ以上の大形弁になると、
弁操作のための操作トルクが大きくなつて、弁本
体、弁部材、弁棒の変形やねじれ量が大きくな
り、とくに弁部材の構成にはできるだけ小さなト
ルクで完壁なシールが確保されるような構造をそ
なえしめることに、とくに重大な関心を払わねば
ならない。 In particular, in valve devices where at least the main parts of the valve body, valve member, and valve stem are made of synthetic resin,
In particular, the nominal size of the valve has become larger, such as 13 inches.
When it comes to large valves of 15 inches or more,
As the operating torque for operating the valve increases, the amount of deformation and twisting of the valve body, valve member, and valve stem increases. Particular attention must be paid to providing structure.
本発明はこのような要請に応じて開発されたも
ので、その要旨は頭書に記載の特許請求の範囲に
記載されているとおりであつて、合成樹脂製の弁
部材を金属を中空円筒状のものとし、とくにその
外面にはキヤストオンされた円環状のリブ突起を
設けるとともに、それらのリブ突起とシール的に
相協働する弁座を弁本体の内部に設け、これらの
共同によつて、小さな弁操作トルクで確実なシー
ルを確保できるようにしたものである。 The present invention was developed in response to such demands, and the gist of the invention is as stated in the claims in the header. In particular, cast-on annular rib protrusions are provided on the outer surface of the valve body, and a valve seat is provided inside the valve body that cooperates with these rib protrusions in a sealing manner. A reliable seal can be ensured using the valve operating torque.
以下に図面を参照して、本発明の好適な１実施
例を図面について詳細に説明する。 A preferred embodiment of the present invention will be described in detail below with reference to the drawings.
図面において、符号１は弁本体であつて、硬質
の合成樹脂（以下、単に「樹脂」という）たとえ
ばPVCもしくはPVDF樹脂によつて造られてい
る。１０１と１０２とは弁本体１に設けられた流
体の入口と出口とである。なお、これらの入口１
０１と出口１０２とを限界しているところの表面
部１０１ａと１０１ｂとは、それぞれ、なるべく
は外開きのテーパ形状にして、接合するパイプ
（図示せず）の管端形状に合わせてある。上記の
入口１０１と出口１０２との間には弁室１０３が
設けてある。弁本体１の底壁１１０には浅い凹み
部１１０が設けてあり、通常は上記の弁室１０３
はこの凹み部１１０と連通している。１０４はテ
ーパつき、かつメネジつきのドレイン抜き用の孔
であつて凹み部１１０の中央部に設けられ、ネジ
つきプラグ１０４をネジ込んでそのところを封止
している。１０５はプラグ１０４の頭部であつ
て、スパナを掛けて着脱操作ができるようになつ
ている。 In the drawings, reference numeral 1 denotes a valve body, which is made of hard synthetic resin (hereinafter simply referred to as "resin"), such as PVC or PVDF resin. 101 and 102 are a fluid inlet and outlet provided in the valve body 1. In addition, these entrances 1
The surface portions 101a and 101b which limit the outlet 102 and the outlet 102 are preferably tapered outwardly to match the shape of the end of the pipe (not shown) to be joined. A valve chamber 103 is provided between the inlet 101 and the outlet 102 described above. A shallow recess 110 is provided in the bottom wall 110 of the valve body 1, and normally the above-mentioned valve chamber 103
is in communication with this recessed portion 110. Reference numeral 104 denotes a drain hole with a tapered and internal thread, which is provided at the center of the recessed portion 110, and the threaded plug 104 is screwed into the hole to seal the hole. Numeral 105 is the head of the plug 104, which can be attached or detached by applying a wrench.
１０６は弁本体１の今まで説明した本体部から
上方へ立上つている立上り部であつて、あらまし
は中空円筒状になつており、後述するようにこれ
により弁棒３を支え、かつ、案内する。その中空
室は符号１０９で示してある。 Reference numeral 106 denotes a rising portion of the valve body 1 that rises upward from the main body portion described above, and has a hollow cylindrical outline, which supports and guides the valve stem 3 as described later. do. The hollow space is designated by the reference numeral 109.
立上り部１０６の上端部には外向フランジ１０
７が設けてある。また、中空室１０９の内壁面に
は相対向して垂直方向に走つている案内溝１０９
ａと１０９ｂとが設けてある。 An outward flange 10 is provided at the upper end of the rising portion 106.
7 is provided. Further, on the inner wall surface of the hollow chamber 109, there are guide grooves 109 running vertically and facing each other.
a and 109b are provided.
上記の立上り部１０６の上端部は上から蓋をす
るような形でカバー板４によつて閉鎖されてい
る。９はＯリングであつてカバー板４と立上り部
１０６との間に挾持されていて、それらの両者間
からの漏れを防いでいる。 The upper end of the above-mentioned rising portion 106 is closed by a cover plate 4 so as to cover it from above. Reference numeral 9 denotes an O-ring, which is held between the cover plate 4 and the rising portion 106 to prevent leakage between the two.
２は本発明の主体部を構成している弁部材であ
つて、同様に硬質ないし半硬質の合成樹脂製であ
り、実体は中空のクサビ状をしたテーパつきの円
筒状のものである。その外部表面のテーパは1/30
ないし1/10に選定されているのが、若干はその範
囲外に出てもよい。ただし、この弁部材２上には
１対の環状をしたシール用のリブ突起９８，９９
がキヤストオン形に形成されているものであるが
（第４図参照）、第１図ないし第３図には図面の複
雑化を避けてその図示を省略してある。第１図と
第２図とはこの弁部材２の完全閉弁位置を実線で
示し、２点鎖線をもつて全閉位置を示してある。
後述するように、この弁部材２は上下運動はでき
るが、回転運動はできない構造のものになつてい
る。なお、弁部材２の材質としては、その硬度が
弁本体１のそれよりも、若干低目のものにするが
よい。この理由で、弁本体１用としてはPVCも
しくはPVDF樹脂とし、弁部材２としてはPPを
選ぶと好適である。 Reference numeral 2 denotes a valve member constituting the main body of the present invention, which is similarly made of hard or semi-hard synthetic resin, and is actually a hollow wedge-shaped tapered cylindrical member. Its external surface taper is 1/30
Although it is selected as 1/10 or 1/10, it may be slightly outside that range. However, on this valve member 2, a pair of annular sealing rib protrusions 98 and 99 are provided.
is formed in a cast-on shape (see FIG. 4), but its illustration is omitted in FIGS. 1 to 3 to avoid complicating the drawings. In FIGS. 1 and 2, the fully closed position of the valve member 2 is shown by a solid line, and the fully closed position is shown by a two-dot chain line.
As will be described later, this valve member 2 has a structure that allows vertical movement but not rotational movement. The material of the valve member 2 should preferably have a hardness slightly lower than that of the valve body 1. For this reason, it is preferable to use PVC or PVDF resin for the valve body 1 and PP for the valve member 2.
なお、上記のリブ突起９８，９９は一般形状と
しては円形リングであつて、それを弁部材２のテ
ーパつき円筒面上に展開した形のものとし、後述
の如く、それらが弁座２００ａおよび２００ｂと
協働して所要のシール作用を営むものである。な
お、上記のリブ突起９８，９９は図面の複雑化を
避けて第１図ないし第３図には図示を省略し第４
図のみに明記しておいたから、この点、誤解がな
いようにする必要がある。 The rib protrusions 98 and 99 have a general shape of a circular ring, which is developed on the tapered cylindrical surface of the valve member 2, and as described later, they are arranged on the valve seats 200a and 200b. It works together with the sealing agent to perform the required sealing action. Note that the rib protrusions 98 and 99 mentioned above are not shown in FIGS. 1 to 3 to avoid complicating the drawings, and are shown in FIG.
Since this is clearly stated only in the diagram, it is necessary to avoid any misunderstanding on this point.
弁室１０３の一部を形成している前記の凹部部
１０３ａのリング状をした側壁の一部によつて形
成されているリング状をした上記の弁座２００ａ
と２００ｂは弁部材２上のシール用のリブ突起９
８と９９の表面と密接する形に配装されている。 The ring-shaped valve seat 200a is formed by a part of the ring-shaped side wall of the recessed portion 103a forming a part of the valve chamber 103.
and 200b are rib protrusions 9 for sealing on the valve member 2.
It is placed in close contact with the surfaces of numbers 8 and 99.
弁部材２のほぼ上端部のところには外方に突出
している１対の突起２ａと２ｂとが設けてあつ
て、たて溝２０９ａと１０９ｂとに摺動可能に嵌
まつていて、これにより弁部材２は鎖線で示した
全開位置と実線で示した全閉位置との間に動かす
ことができるが、非回転のものである。 A pair of outwardly protruding protrusions 2a and 2b are provided approximately at the upper end of the valve member 2, and are slidably fitted into the vertical grooves 209a and 109b. The valve member 2 is movable between a fully open position shown in chain lines and a fully closed position shown in solid lines, but is non-rotatable.
弁部材２はさらに軸線方向の内腔部２ｆをそな
えており、その上部はメネジ部２ｃになつてお
り、下部はネジなし部２ｄになつている。なお、
弁部材２の底部は浅い凹状のくぼみ部２ｅになつ
ている。 The valve member 2 further includes an axial inner cavity 2f, the upper part of which is a female threaded part 2c, and the lower part of which is a non-threaded part 2d. In addition,
The bottom of the valve member 2 is formed into a shallow concave recess 2e.
３は弁棒であつて上端部には操作ハンドル６が
とりつけてある。３ｂは拡大した形のフランジ部
であつて、カバー板４とホルダーピース５との間
に挾持されている。３ｃは軸受部であつてカバー
板４の孔４ａを貫通している。７はＯリングであ
る。３ｄはオネジ部であつて弁部材２に設けたメ
ネジ部と噛み合つている。したがつて、操作ハン
ドル６を手（もしくはモータ）で操作して弁棒３
を１方向もしくは他方向に廻すと、弁部材２は回
転することなく上下運動をする。 3 is a valve stem, and an operating handle 6 is attached to the upper end thereof. 3b is an enlarged flange portion, which is held between the cover plate 4 and the holder piece 5. Reference numeral 3c denotes a bearing portion that passes through the hole 4a of the cover plate 4. 7 is an O-ring. Reference numeral 3d denotes a male threaded portion which engages with a female threaded portion provided on the valve member 2. Therefore, the operation handle 6 is operated by hand (or a motor) to control the valve stem 3.
When the valve member 2 is turned in one direction or the other direction, the valve member 2 moves up and down without rotating.
次に、第５図ＡとＢとについて説明すると、弁
棒３は金属製の芯棒９７が一体堅固にモールドさ
れている。９７ａはその上端部のオネジ部であつ
て、これに前述の操作ハンドル６がナツト１２に
より、とりつけてある。１１は弛み止めのワツシ
ヤである。芯棒９７はさらに、適数の相離隔し
た、なるべくは六角を可とする多角形状の膨れ部
９７ｂと、それらの膨れ部９７ｂを連結している
短かい丸棒部９７ｃとからなる上方部を備えてい
る。高さ方向に見て芯棒９７のほぼ中央部には、
長目の中間丸棒部９７ｄがある。さらに、この中
間丸棒部９７ｄよりも下方の部分は上記の上方部
と同じように、相離隔した多角形状の膨れ部９７
ｂと、それらの間を連結している短かい丸棒９７
ｃとを備えている。なお、弁棒３は上記の金属製
の芯棒９７はそのまわりに一体成型して形成され
た合成樹脂製のシース３とから成り立つている。
上記の部分９７ｂ，９７ｃ，９７ｄの部分は上記
のシース３の部分を芯棒９７の確実な一体化を確
保するために設けられている。長目の中間丸棒部
９７ｃは、そのほかに、弁棒３の上記上部と下部
との間にねじり作用が働くのに耐えるようになつ
ている。 Next, referring to FIGS. 5A and 5B, the valve stem 3 has a metal core rod 97 firmly molded as one body. Reference numeral 97a denotes a male threaded portion at the upper end thereof, to which the aforementioned operating handle 6 is attached with a nut 12. 11 is a washer to prevent loosening. The core rod 97 further has an upper portion consisting of an appropriate number of polygonal bulges 97b, preferably hexagonal, spaced apart from each other, and a short round bar portion 97c connecting these bulges 97b. We are prepared. At approximately the center of the core rod 97 when viewed in the height direction, there is a
There is a long intermediate round bar portion 97d. Furthermore, a portion below this intermediate round bar portion 97d has polygonal bulges 97 spaced apart, similar to the above-mentioned upper portion.
b and a short round bar 97 connecting them.
It is equipped with c. The valve stem 3 is composed of the metal core rod 97 and a synthetic resin sheath 3 integrally formed around the metal core rod 97.
The portions 97b, 97c, and 97d are provided to ensure reliable integration of the core rod 97 with the sheath 3 portion. In addition, the longer intermediate round rod portion 97c is designed to withstand twisting action between the upper and lower portions of the valve stem 3.
図面からわかるように、弁本体１はなんらの接
続フランジも、該フランジを連結すべきボルトも
有しないところの、極簡単型の構造である。すな
わち、液（またはガス）の導入パイプと排出パイ
プとの双方にフランジを設けて、それらをボルト
連結し、その間に弁本体１を介装する形式のもの
に実施されている。そのようにするための、フラ
ンジなしの平坦型の端部が符号１１１と１１２と
で示されている。１０１と１０２とは処理液（も
しくはガス）を導入もしくは排出するための開口
部である。 As can be seen from the drawings, the valve body 1 is of very simple construction, without any connecting flanges or bolts to connect the flanges. That is, flanges are provided on both the liquid (or gas) introduction pipe and the discharge pipe, and these are connected with bolts, and the valve body 1 is interposed between them. The flanged, flat ends for doing so are shown at 111 and 112. 101 and 102 are openings for introducing or discharging a processing liquid (or gas).
弁の操作それ自体は操作ハンドル６を操作する
にあることは自明であるが、これを右廻りにネジ
を結める方向に廻すと、弁部材２は全開位置から
下降して全閉位置にくる。その全閉位置にくる少
し前に、弁部材２の底部１１３に設けられている
浅い凹み部１０３ａが僅かにテーパの付してある
外周部２００ｂと接触状態となり、上記の凹み部
１０３ａ内に少量の液（液を処理するばあい）が
閉じ込め状態となり一種のトラツプの作用を営ん
で、閉弁作用に対して、つよく抵抗することにな
るが、これは公知装置のばあいで、本発明では中
空孔２ｆが設けてあるので、トラツプされている
液があつても、それを釈放する。 It is obvious that the operation of the valve itself consists of operating the operating handle 6, but when this is turned clockwise in the direction of tightening the screw, the valve member 2 descends from the fully open position to the fully closed position. come. Shortly before reaching the fully closed position, the shallow recess 103a provided in the bottom 113 of the valve member 2 comes into contact with the slightly tapered outer circumference 200b, and a small amount of The liquid (when processing liquid) becomes trapped and acts as a kind of trap, strongly resisting the valve closing action, but this is the case with the known device, but with the present invention. Since the hollow hole 2f is provided, even if there is trapped liquid, it is released.
全閉位置において、リブ突起９８，９９が相手
方の弁座２００ａ，２２ｂとシール的に協働する
作用は、すこぶる卓抜であつて、とくに１３″と
か１４″の如き大形弁において弁操作トルクがき
わめて大きくなるときに、いつそう、その効力を
発揮する。これらの大形弁において、漏れを起さ
ずシールできる弁操作トルクを約40％軽くでき
る。この効果、弁の耐用寿命も約40％伸びること
が判明している。第６図はこの種のテストにおい
て使用した実験装置の概略を示している。８０は
供試弁。８１，８２は接続パイプ。８１ａ，８２
ａはそれらのパイプの閉鎖端部、８３，８４は接
続パイプ、９０は上方へ加圧してデフレツクスさ
せる装置。８５，８６はブラケツト。８７，８８
は支持装置。９１は床面、８９，９２は圧力液の
導入口。 In the fully closed position, the rib protrusions 98 and 99 cooperate with the opposing valve seats 200a and 22b in a sealing manner, which is extremely effective, especially in large valves such as 13'' and 14'', when the valve operating torque is low. When it becomes extremely large, it becomes effective. For these large valves, the valve operating torque can be reduced by approximately 40% to ensure leak-free sealing. This effect has been shown to extend the service life of the valve by approximately 40%. FIG. 6 schematically shows the experimental equipment used in this type of test. 80 is a test valve. 81 and 82 are connection pipes. 81a, 82
83 and 84 are connecting pipes, and 90 is a device for applying upward pressure and defluxing the pipes. 85 and 86 are brackets. 87, 88
is a support device. 91 is the floor surface, and 89 and 92 are pressure fluid inlet ports.
使用の液圧は10〜20Kg／cm2であり、加圧時間は
２〜５分間であつた。トルクはボア50〜150mmに
つき100〜200Kg・cmであり、350mm迄、およそボ
アサイズに比例する。流体の液圧は17.5〜20Kg／
cm2に選定し、デフレクシヨンの量は最大10mmとし
たが漏れは見られなかつた。リブ突起のないもの
では３mmのデフレクシヨンですでに漏れが見られ
る。リブ突起のないものでは、40％も漏れなしト
ルクが大きくなる。また、経験によると、従来構
造のものにくらべて、弁の耐用寿命が40％も延
び、しかもシール効果が失われないという効果が
得られた。 The hydraulic pressure used was 10-20 Kg/cm 2 and the pressurization time was 2-5 minutes. Torque is 100 to 200 kg cm per bore of 50 to 150 mm, and is approximately proportional to the bore size up to 350 mm. Fluid pressure is 17.5~20Kg/
cm 2 and the maximum deflection amount was 10 mm, but no leakage was observed. Leakage can already be seen with a deflection of 3 mm in the case without rib protrusions. The one without rib protrusions has 40% more leak-free torque. Furthermore, experience has shown that the service life of the valve is extended by 40% compared to the conventional structure, and the sealing effect is not lost.
第１図は弁部材が全閉位置にあるときの弁装置
の中央縦断面図、第２図は一部を断面で示したそ
の端面図、第３図は一部は断面で示したその斜面
図、第４図は弁部材の斜面図、第５Ａ図は金属製
の芯棒と合成樹脂製外側シースとの一体化された
本発明の要部である弁棒の斜面図、第５Ｂ図は金
属製の芯棒と合成樹脂製外側シースとの一体化さ
れた本発明の要部である弁棒の斜面図、第６図は
弁のリークテスト装置の略図的側面図である。
これらの図において、１……弁本体、２……弁
部材、３……弁棒、１０１……入口、１０２……
出口。
Fig. 1 is a central vertical sectional view of the valve device when the valve member is in the fully closed position, Fig. 2 is an end view, partially shown in cross section, and Fig. 3 is an inclined plane, partially shown in cross section. 4 is an oblique view of the valve member, FIG. 5A is an oblique view of the valve stem, which is the main part of the present invention, which is an integrated metal core rod and synthetic resin outer sheath, and FIG. 5B is an oblique view of the valve member. FIG. 6 is a perspective view of a valve stem, which is a main part of the present invention, in which a metal core rod and a synthetic resin outer sheath are integrated, and FIG. 6 is a schematic side view of a valve leak test device. In these figures, 1... valve body, 2... valve member, 3... valve stem, 101... inlet, 102...
Exit.
Claims (1)
成樹脂製であり、外部表面は僅かに末狭のテーパ
を有するとともに、該テーパ状表面に円環状のも
のをテーパ円筒表面上にキヤストオンして一体化
した１組のリブ突起を設けてなる弁部材と、合成
樹脂製の弁本体内に弁部材の全閉時において該リ
ブ突起とシール的に相協働する１組の弁座を有す
る弁本体とをそなえてなる改良型の弁部材をそな
えた弁装置。1 It is made of synthetic resin that slides up and down but does not rotate in a hollow cylindrical shape, and the outer surface has a slightly narrow taper, and an annular object is cast onto the tapered cylindrical surface. A valve member is provided with a pair of integrated rib protrusions, and a valve seat is provided in a synthetic resin valve body that cooperates with the rib protrusions in a sealing manner when the valve member is fully closed. A valve device comprising an improved valve member comprising a valve body having a valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20908082A JPS5999172A (en) | 1982-11-29 | 1982-11-29 | Valve device with improved type valve member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20908082A JPS5999172A (en) | 1982-11-29 | 1982-11-29 | Valve device with improved type valve member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5999172A JPS5999172A (en) | 1984-06-07 |
| JPH0147673B2 true JPH0147673B2 (en) | 1989-10-16 |
Family
ID=16566928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20908082A Granted JPS5999172A (en) | 1982-11-29 | 1982-11-29 | Valve device with improved type valve member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5999172A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101155089B1 (en) | 2009-11-23 | 2012-06-11 | 진원개발 주식회사 | Gate valve |
| KR101349403B1 (en) * | 2013-01-22 | 2014-01-08 | 이병순 | Rotating gate valve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS442622Y1 (en) * | 1965-06-04 | 1969-01-31 | ||
| JPS56141468A (en) * | 1980-04-08 | 1981-11-05 | Asahi Organic Chem Ind Co Ltd | Valve device |
-
1982
- 1982-11-29 JP JP20908082A patent/JPS5999172A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS442622Y1 (en) * | 1965-06-04 | 1969-01-31 | ||
| JPS56141468A (en) * | 1980-04-08 | 1981-11-05 | Asahi Organic Chem Ind Co Ltd | Valve device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5999172A (en) | 1984-06-07 |
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