JPH05346825A - Pressure reducing valve - Google Patents
Pressure reducing valveInfo
- Publication number
- JPH05346825A JPH05346825A JP18173292A JP18173292A JPH05346825A JP H05346825 A JPH05346825 A JP H05346825A JP 18173292 A JP18173292 A JP 18173292A JP 18173292 A JP18173292 A JP 18173292A JP H05346825 A JPH05346825 A JP H05346825A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- chamber
- adjusting screw
- pressure
- lower chamber
- 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
- Control Of Fluid Pressure (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、蒸気や圧縮空気等の流
体配管に取り付けて、入口側から出口側へ流す流量を制
御し、出口側すなわち二次側の流体圧力を、入口側すな
わち一次側よりも所望低い圧力値に維持する減圧弁に関
し、特に圧力設定ばねの弾性力を調節して二次側圧力を
所望の設定圧力に設定する調節ねじ部の構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is attached to a fluid pipe such as steam or compressed air to control the flow rate from the inlet side to the outlet side, and to control the fluid pressure on the outlet side or the secondary side to the inlet side or the primary side. TECHNICAL FIELD The present invention relates to a pressure reducing valve that maintains a desired lower pressure value than the side, and particularly to a structure of an adjusting screw portion that adjusts the elastic force of a pressure setting spring to set a secondary side pressure to a desired setting pressure.
【０００２】[0002]
【従来の技術】減圧弁はダイヤフラム等の受圧応動壁の
一方の面に圧力設定ばねの弾性力を作用せしめてこれを
基準値とし、他方の面に二次側（減圧弁の出口側）の流
体圧力を作用せしめ、基準値との偏差に応じてダイヤフ
ラムを撓ませて、直接にあるいはこれに連結した弁部材
を介して主弁体を駆動し、主弁体で入口と出口の間に設
けた主弁口を開閉するものである。この一例が、例えば
実公昭４６−３４９５１号公報に示されている。二次側
の設定圧力を変更する場合は、弁ケ―シングに形成した
軸受部にねじ接合した調節ねじを回転させて軸方向に移
動させて圧力設定ばねの圧縮量を変更することにより、
圧力設定ばねの弾性力を調節する。2. Description of the Related Art In a pressure reducing valve, an elastic force of a pressure setting spring is applied to one surface of a pressure receiving wall such as a diaphragm and the elastic force is used as a reference value, and the other surface is provided with a secondary side (outlet side of the pressure reducing valve). Apply the fluid pressure to bend the diaphragm according to the deviation from the reference value to drive the main valve element directly or via the valve member connected to this, and install it between the inlet and the outlet with the main valve element. It opens and closes the main valve opening. An example of this is shown, for example, in Japanese Utility Model Publication No. 46-34951. When changing the set pressure on the secondary side, rotate the adjusting screw threaded to the bearing formed on the valve casing and move it axially to change the compression amount of the pressure setting spring.
Adjust the elastic force of the pressure setting spring.
【０００３】[0003]
【発明が解決しようとする課題】上記従来のものでは、
調節ねじと軸受部の間のねじ部に焼付きが生じたり、ま
た設定圧力の変更を頻繁に行う場合には比較的短時間に
ねじ部が摩耗し、二次側流体圧力の微調節ができなくな
る問題があった。この問題を解決するためにねじ部に潤
滑剤を塗布することも行なわれているが、潤滑剤が出荷
時等にこぼれたり、調節ねじの回転を繰り返すうちに流
出してしまい、焼付きや摩耗を防止できなくなってい
た。従って、本発明の技術的課題は、調節ねじと軸受部
の間のねじ部に常に潤滑剤を位置せしめて、長期に渡り
二次側の流体圧力を正確に設定圧力に調節できるように
することである。SUMMARY OF THE INVENTION In the above conventional one,
If the seizure occurs in the thread between the adjusting screw and the bearing, or if the set pressure is changed frequently, the thread wears in a relatively short time and the secondary side fluid pressure can be finely adjusted. There was a problem that disappeared. In order to solve this problem, lubricant is applied to the threads.However, the lubricant may spill at the time of shipping, etc., or it may flow out after repeated adjustment screw rotation, causing seizure or wear. Could not be prevented. Therefore, a technical object of the present invention is to always place a lubricant on the threaded portion between the adjusting screw and the bearing so that the fluid pressure on the secondary side can be accurately adjusted to the set pressure for a long period of time. Is.
【０００４】[0004]
【課題を解決するための手段】上記の技術的課題を解決
するために講じた本発明の技術的手段は、一面に作用す
る圧力設定ばねの弾性力と他面に作用する二次側流体圧
力との偏差に基づいて変位するダイヤフラム等の受圧応
動壁により主弁体を駆動して入口と出口の間に設けた主
弁口を開閉するものであって、軸受部にねじ接合した調
節ねじを回転させて軸方向に移動させその移動により圧
力設定ばねの付勢状態を変更することにより弁の設定圧
力を調節するように構成された減圧弁において、調節ね
じとねじ接合する軸受部の上方と下方に上室と下室を形
成すると共に、調節ねじと軸受部の間のねじ部に上室と
下室を連通する連通路を形成して、上室と下室及び連通
路で潤滑剤を注入した潤滑剤溜部を形成し、調節ねじ下
部の下室に対面する部分の径をその上方のねじ部の径と
は異ならせて形成し、下室の下方に調節ねじと軸受部の
間を密封する下シ―ル部材を設け、圧力設定範囲以上に
調節ねじを上方に変位せしめたときに上室の上方の調節
ねじと軸受部の間を密封する上シ―ル部材を設けたもの
である。Means for Solving the Problems The technical means of the present invention taken to solve the above-mentioned technical problems are the elastic force of a pressure setting spring acting on one side and the secondary side fluid pressure acting on the other side. The main valve body is driven by a pressure receiving wall such as a diaphragm that displaces based on the deviation from the opening and closing of the main valve opening provided between the inlet and the outlet. In a pressure reducing valve that is configured to rotate and move in the axial direction and change the biasing state of the pressure setting spring by the movement to adjust the set pressure of the valve, above the bearing portion screw-joined with the adjusting screw. An upper chamber and a lower chamber are formed below, and a communication passage that connects the upper chamber and the lower chamber is formed in the threaded portion between the adjusting screw and the bearing portion, and the lubricant is supplied to the upper chamber, the lower chamber, and the communication passage. Form the injected lubricant reservoir and face the lower chamber under the adjusting screw. The diameter of the part is made different from the diameter of the screw part above it, and the lower seal member that seals the gap between the adjusting screw and the bearing part is provided below the lower chamber, and the adjusting screw should be set above the pressure setting range. An upper seal member is provided to seal a gap between the adjusting screw and the bearing portion above the upper chamber when the upper chamber is displaced upward.
【０００５】[0005]
【作用】上記の技術的手段の作用は下記の通りである。
圧力設定範囲以上に調節ねじを上方に変位せしめること
により、上室と下室及び連通路からなる潤滑剤溜部は上
下シ―ル部材により密封されるので、出荷時等に潤滑剤
がこぼれることがない。また配管後の運転時において
は、調節ねじ下部の下室に対面する部分の径をその上方
のねじ部の径とは異ならせて形成し、下室の下方に調節
ねじと軸受部の間を密封する下シ―ル部材を設けている
ので、潤滑剤は調節ねじが上下に変位するときに、連通
路を介して上室と下室を循環すると共に、連通路を通過
する際に、調節ねじが回転しているので、ねじ部全体に
浸透する。The operation of the above technical means is as follows.
By displacing the adjusting screw upward beyond the pressure setting range, the lubricant reservoir consisting of the upper chamber, the lower chamber and the communication passage is sealed by the upper and lower seal members, so lubricant may spill at the time of shipment. There is no. Also, during operation after piping, the diameter of the part facing the lower chamber under the adjusting screw is made different from the diameter of the screw part above it, and the part between the adjusting screw and the bearing part is located below the lower chamber. Since the lower seal member for sealing is provided, the lubricant is circulated between the upper chamber and the lower chamber through the communication passage when the adjusting screw is displaced up and down, and is adjusted when passing through the communication passage. As the screw rotates, it penetrates the entire thread.
【０００６】[0006]
【実施例】上記の技術的手段の具体例を示す実施例を説
明する（図１参照）。弁ケ―シングで入口１と出口２、
主弁口３を形成し、主弁口３は主弁ばね４で閉弁方向に
付勢された主弁体５で開閉する。ピストン９をシリンダ
―１０内に摺動自在に配置し、ピストン９の下部ピスト
ン棒は前記主弁体５の上部突起部に当接する。ピストン
９の下面には出口２側の流体圧力が作用し、上面には入
口１側の流体圧力が一次圧通路１１，１２を通してパイ
ロット弁１３で制御されて導入される。パイロット弁１
３は閉弁方向にばねで付勢され、弁棒を介してダイヤフ
ラム１４の下面に当り、その変位により開弁方向の操作
力を受ける。EXAMPLE An example showing a concrete example of the above technical means will be described (see FIG. 1). Inlet 1 and outlet 2 with valve casing,
A main valve opening 3 is formed, and the main valve opening 3 is opened and closed by a main valve body 5 biased in a valve closing direction by a main valve spring 4. The piston 9 is slidably arranged in the cylinder 10, and the lower piston rod of the piston 9 contacts the upper protrusion of the main valve body 5. The fluid pressure on the outlet 2 side acts on the lower surface of the piston 9, and the fluid pressure on the inlet 1 side is introduced to the upper surface through the primary pressure passages 11 and 12 under the control of the pilot valve 13. Pilot valve 1
3 is biased by a spring in the valve closing direction, hits the lower surface of the diaphragm 14 via the valve rod, and receives the operating force in the valve opening direction due to its displacement.
【０００７】ダイヤフラム１４の上面にはダイヤフラム
押え１５を介して圧力設定ばね１６の下端が当接し、弾
性力が作用する。圧力設定ばね１６の上端にはばね受け
部材１７及びボ―ル１８を介して調節ねじ１９の下端が
当り、調節ねじ１９の回転による進退で、圧力設定ばね
１６の圧縮量を調節して、ダイヤフラム１４に作用する
弾性力を調節できるようになっている。調節ねじ１９
は、弁ケ―シングの一部を成すばね収容ケ―ス２０と取
付板２１に固定した軸受部２２にねじ接合している。The lower end of the pressure setting spring 16 abuts on the upper surface of the diaphragm 14 via the diaphragm retainer 15 and an elastic force acts. The lower end of the adjusting screw 19 contacts the upper end of the pressure setting spring 16 via the spring receiving member 17 and the ball 18, and the amount of compression of the pressure setting spring 16 is adjusted by moving the adjusting screw 19 forward and backward to adjust the diaphragm. The elastic force acting on 14 can be adjusted. Adjustment screw 19
Is screwed to a spring housing case 20 forming a part of the valve casing and a bearing portion 22 fixed to a mounting plate 21.
【０００８】調節ねじ１９は上部の大径部１９ａと下部
の小径部１９ｂとその間の中径の雄ねじ部１９ｃとから
なり、軸受部２２は調節ねじ１９の雄ねじ部１９ｃにね
じ接合する雌ねじ部２２ａを有し、雌ねじ部２２ａの上
方と下方に夫々調節ねじ１９との間に上室２２ｂと下室
２２ｃが形成される。上室２２ｂと下室２２ｃは調節ね
じ１９の雄ねじ部１９ｃに軸方向に形成した溝からなる
連通路２３を介して連通する。上室２２ｂと下室２２ｃ
及び連通路２３で潤滑剤溜部が形成され、潤滑剤が注入
口２４から注入されている。注入口２４は潤滑剤が注入
された後にニップル（図示せず）で密封される。上室２
２ｂの上方と下室２２ｃの下方に夫々調節ねじ１９と軸
受部２２の間を密封するシ―ル部材２５，２６を配置す
る。シ―ル部材２５は圧力設定範囲以上に調節ねじ１９
が上方に変位せしめられた図示の位置で、調節ねじ１９
と軸受部２２の間を密封する。圧力設定は調節ねじ１９
が図示の位置よりも下方に変位し、シ―ル部材２５が上
室２２ｂに対面した位置で行われる。ダイヤフラム１４
の下面は出口２に連通する二次側検出通路２８を通して
ダイヤフラム室２９に面する。The adjusting screw 19 comprises an upper large diameter portion 19a, a lower small diameter portion 19b and a middle diameter male screw portion 19c therebetween, and the bearing portion 22 is a female screw portion 22a which is screwed to the male screw portion 19c of the adjusting screw 19. The upper chamber 22b and the lower chamber 22c are formed between the adjusting screw 19 and above the female screw portion 22a. The upper chamber 22b and the lower chamber 22c communicate with the male screw portion 19c of the adjusting screw 19 via a communication passage 23 formed of a groove formed in the axial direction. Upper chamber 22b and lower chamber 22c
A lubricant reservoir is formed in the communication passage 23, and the lubricant is injected from the injection port 24. The inlet 24 is sealed with a nipple (not shown) after the lubricant is injected. Upper chamber 2
Seal members 25 and 26 for sealing between the adjusting screw 19 and the bearing portion 22 are arranged above 2b and below the lower chamber 22c, respectively. The seal member 25 is adjusted by adjusting the screw 19 over the pressure setting range.
The adjusting screw 19 at the position shown
And the bearing portion 22 are sealed. Adjust pressure 19
Is displaced below the illustrated position, and the seal member 25 is moved to a position facing the upper chamber 22b. Diaphragm 14
The lower surface of the diaphragm faces the diaphragm chamber 29 through the secondary side detection passage 28 communicating with the outlet 2.
【０００９】調節ねじ１９は左右に回転されることによ
り上下に変位する。調節ねじ１９が下方に変位すると、
上室２２ｂ及び下室２２ｃの容積が減少し、下室２２ｃ
の潤滑剤が連通路２３を介して上室２２ｂに押し上げら
れる。逆に調節ねじ１９が上方に変位すると、上室２２
ｂ及び下室２２ｃの容積が増加し、上室２２ｂの潤滑剤
が連通路２３を介して下室２２ｃに流下する。連通路２
３を通過する際に、潤滑剤は調節ねじ１９の雄ねじ部１
９ｃと軸受部２２の雌ねじ部２２ａの間のねじ部に浸透
する。The adjusting screw 19 is displaced up and down by being rotated left and right. When the adjusting screw 19 is displaced downward,
The volumes of the upper chamber 22b and the lower chamber 22c decrease, and the lower chamber 22c
Is pushed up into the upper chamber 22b through the communication passage 23. Conversely, when the adjusting screw 19 is displaced upward, the upper chamber 22
The volumes of b and the lower chamber 22c increase, and the lubricant in the upper chamber 22b flows down to the lower chamber 22c through the communication passage 23. Communication passage 2
When passing through 3, the lubricant is the external thread 1 of the adjusting screw 19.
9c and the threaded portion 22a of the bearing 22.
【００１０】そして、調節ねじ１９が上下に変位する
と、圧力設定ばね１６のダイヤフラム１４を押し下げる
弾性力が変る。従って、ダイヤフラム１４が下方に変位
するとパイロット弁１３が押し下げられて開弁し、入口
１の流体が通路１１，１２を通ってピストン９の上方に
導入され、主弁体５がピストン９で押し下げられて主弁
口３が開かれ、入口１の流体が出口２に流れる。二次側
の圧力が上昇すると二次側検出通路２８を通してダイヤ
フラム室２９の圧力も上昇し、ダイヤフラム１４が上方
に変位する。その結果パイロット弁１３が押し上げられ
て閉弁しピストン９の上方への供給流体が減少し主弁体
５が主弁ばね４で押し上げられ、主弁口３が塞がれる。
以上を繰り返して二次側の圧力を所望の値に保持する。When the adjusting screw 19 is vertically displaced, the elastic force of pushing down the diaphragm 14 of the pressure setting spring 16 changes. Therefore, when the diaphragm 14 is displaced downward, the pilot valve 13 is pushed down and opened, the fluid at the inlet 1 is introduced above the piston 9 through the passages 11 and 12, and the main valve body 5 is pushed down by the piston 9. The main valve opening 3 is opened, and the fluid at the inlet 1 flows to the outlet 2. When the pressure on the secondary side rises, the pressure in the diaphragm chamber 29 also rises through the secondary side detection passage 28, and the diaphragm 14 is displaced upward. As a result, the pilot valve 13 is pushed up and closed, the fluid supplied to the upper part of the piston 9 is reduced, the main valve body 5 is pushed up by the main valve spring 4, and the main valve port 3 is closed.
By repeating the above, the pressure on the secondary side is maintained at a desired value.
【００１１】設定圧力を変更する時は調節ねじ１９を回
転して圧力設定ばね１６のダイヤフラム１４への付勢力
を変更する。この調節ねじ１９を回転せしめる機構を以
下に説明する。調節ねじ１９の上部にアクチュエ―タ３
０の出力軸３１を嵌合する嵌合孔３２を形成し、嵌合孔
３２の周囲には２か所切欠部３３を形成する。出力軸３
１にピン３４を貫通させて固定し、ピン３４の両端を切
欠部３３に嵌合して、出力軸３１を嵌合孔３２に嵌合す
る。アクチュエ―タ３０は出力軸３１を有する減速機３
５と減速機３５の入力側に結合されたモ―タ３６とから
成り、取付板２１に固定した取付台３７に固定され、カ
バ―３８で覆われる。When changing the set pressure, the adjusting screw 19 is rotated to change the urging force of the pressure setting spring 16 to the diaphragm 14. The mechanism for rotating the adjusting screw 19 will be described below. Actuator 3 on top of adjusting screw 19
A fitting hole 32 for fitting the 0 output shaft 31 is formed, and two notches 33 are formed around the fitting hole 32. Output shaft 3
1, the pin 34 is passed through and fixed, the both ends of the pin 34 are fitted into the notch 33, and the output shaft 31 is fitted into the fitting hole 32. The actuator 30 is a speed reducer 3 having an output shaft 31.
5 and a motor 36 connected to the input side of the speed reducer 35, which is fixed to a mounting base 37 fixed to the mounting plate 21 and covered with a cover 38.
【００１２】カバ―３８内にモ―タ３６へ駆動信号を供
給する制御手段３９を配置する。制御手段３９には予め
調節ねじ１９の位置と設定圧力の関係を記憶せしめてお
く。出力軸３１の定位置に於ける回転に対し、調節ねじ
１９はピン３４を介して回転しながら軸方向に移動す
る。取付台３７に調節ねじ１９の軸方向の位置を検出す
るポテンショ・メ―タ４０を取り付ける。A control means 39 for supplying a drive signal to the motor 36 is arranged in the cover 38. The control means 39 stores in advance the relationship between the position of the adjusting screw 19 and the set pressure. With respect to the rotation of the output shaft 31 in the fixed position, the adjusting screw 19 moves in the axial direction while rotating through the pin 34. A potentiometer 40 for detecting the axial position of the adjusting screw 19 is attached to the mount 37.
【００１３】設定すべき任意の設定圧力が入力される
と、制御手段３９は関数関係に基づいてモ―タ３６を回
転させ、調節ねじ１９を進退せしめて圧力設定ばね１６
の弾性力を調節する。ポテンショ・メ―タ４０により調
節ねじ１９が停止すべき位置に変位したことが検出され
ると、制御手段３９はモ―タ３６の駆動を停止する。When an arbitrary set pressure to be set is input, the control means 39 rotates the motor 36 based on the functional relation to move the adjusting screw 19 back and forth to set the pressure setting spring 16
Adjust the elastic force of. When the potentiometer 40 detects that the adjusting screw 19 is displaced to the position where it should be stopped, the control means 39 stops the drive of the motor 36.
【００１４】本発明は上記実施例に限定されるものでは
なく、調節ねじ下部をその上方のねじ部よりも大径に形
成することもできる。また下室の容積が減少すれば上室
の容積を増加せしめ、下室の容積が増加すれば上室の容
積を減少せしめてもよい。また、連通路は軸受部の雌ね
じ部に形成することもできる。The present invention is not limited to the above-mentioned embodiment, but the lower part of the adjusting screw can be formed to have a larger diameter than the screw part above it. The volume of the upper chamber may be increased when the volume of the lower chamber is decreased, and the volume of the upper chamber may be decreased when the volume of the lower chamber is increased. Further, the communication passage may be formed in the female screw portion of the bearing portion.
【００１５】[0015]
【発明の効果】上記のように本発明によれば、調節ねじ
と弁ケ―シングの軸受部の間のねじ部に常に潤滑剤を位
置せしめることができ、長期に渡り二次側の流体圧力を
正確に設定圧力に調節できる減圧弁を得ることができ
る。As described above, according to the present invention, the lubricant can be always positioned on the threaded portion between the adjusting screw and the bearing portion of the valve casing, and the fluid pressure on the secondary side can be maintained for a long period of time. It is possible to obtain a pressure reducing valve capable of accurately adjusting the pressure to a set pressure.
【図１】本発明の実施例の減圧弁の断面図である。FIG. 1 is a cross-sectional view of a pressure reducing valve according to an embodiment of the present invention.
１ 入口 ２ 出口 ３ 主弁口 ５ 主弁体 １４ ダイヤフラム １６ 圧力設定ばね １９ 調節ねじ １９ａ 大径部 １９ｂ 小径部 １９ｃ 雄ねじ部 ２２ 軸受部 ２２ａ 雌ねじ部 ２２ｂ 上室 ２２ｃ 下室 ２３ 連通路 ２５ 上シ―ル部材 ２６ 下シ―ル部材 ３０ アクチュエ―タ ３９ 制御手段 ４０ ポテンショ・メ―タ 1 Inlet 2 Outlet 3 Main valve port 5 Main valve body 14 Diaphragm 16 Pressure setting spring 19 Adjusting screw 19a Large diameter part 19b Small diameter part 19c Male screw part 22 Bearing part 22a Female screw part 22b Upper chamber 22c Lower chamber 23 Communication passage 25 Upper seat Lower member 26 Lower seal member 30 Actuator 39 Control means 40 Potentiometer
Claims (1)
他面に作用する二次側流体圧力との偏差に基づいて変位
するダイヤフラム等の受圧応動壁により主弁体を駆動し
て入口と出口の間に設けた主弁口を開閉するものであっ
て、軸受部にねじ接合した調節ねじを回転させて軸方向
に移動させその移動により圧力設定ばねの付勢状態を変
更することにより弁の設定圧力を調節するように構成さ
れた減圧弁において、調節ねじとねじ接合する軸受部の
上方と下方に上室と下室を形成すると共に、調節ねじと
軸受部の間のねじ部に上室と下室を連通する連通路を形
成して、上室と下室及び連通路で潤滑剤を注入した潤滑
剤溜部を形成し、調節ねじ下部の下室に対面する部分の
径をその上方のねじ部の径とは異ならせて形成し、下室
の下方に調節ねじと軸受部の間を密封する下シ―ル部材
を設け、圧力設定範囲以上に調節ねじを上方に変位せし
めたときに上室の上方の調節ねじと軸受部の間を密封す
る上シ―ル部材を設けた減圧弁。1. A main valve body is driven by a pressure receiving wall such as a diaphragm which is displaced based on a deviation between an elastic force of a pressure setting spring acting on one surface and a secondary side fluid pressure acting on the other surface, and an inlet. It opens and closes the main valve opening provided between the outlets, and the adjustment screw screwed to the bearing is rotated to move in the axial direction and the movement changes the biasing state of the pressure setting spring. In the pressure reducing valve configured to adjust the set pressure of, the upper chamber and the lower chamber are formed above and below the bearing portion screw-joined with the adjusting screw, and the upper portion of the screw portion between the adjusting screw and the bearing portion is formed. A communicating passage that connects the chamber and the lower chamber is formed, and a lubricant reservoir filled with lubricant is formed in the upper chamber, the lower chamber, and the communicating passage, and the diameter of the portion facing the lower chamber under the adjusting screw is It is formed to have a diameter different from that of the upper screw part, and an adjusting screw is An upper seal member is provided that seals between the bearings and seals between the adjustment screw above the upper chamber and the bearing when the adjustment screw is displaced upward beyond the pressure setting range. Pressure reducing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18173292A JP2741310B2 (en) | 1992-06-15 | 1992-06-15 | Pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18173292A JP2741310B2 (en) | 1992-06-15 | 1992-06-15 | Pressure reducing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05346825A true JPH05346825A (en) | 1993-12-27 |
| JP2741310B2 JP2741310B2 (en) | 1998-04-15 |
Family
ID=16105921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18173292A Expired - Fee Related JP2741310B2 (en) | 1992-06-15 | 1992-06-15 | Pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2741310B2 (en) |
-
1992
- 1992-06-15 JP JP18173292A patent/JP2741310B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2741310B2 (en) | 1998-04-15 |
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