JPH0192567U

JPH0192567U -

Info

Publication number: JPH0192567U
Application number: JP18842287U
Authority: JP
Priority date: 1987-12-11
Filing date: 1987-12-11
Publication date: 1989-06-16

Description

[Brief explanation of the drawing]

図面は本考案の一実施例に係る三方弁の常態姿
勢を示す断面図である。１……ボデイ、２……ボンネツト、３……キヤ
ツプ、４……第１のシリンダ、５……第２のシリ
ンダ、６……仕切壁、７……第１のピストン、８
……中空ステム、９……弁蓋、１０……弁室、１
１……弁体、１２……弁座シート、１３……スペ
ーサ、１４……第１のポート、１５……第２のポ
ート、１６……第１の弁部、１７，２８……スプ
リング、１８……第１の圧力ポート、１９，３０
，３４，３５……シリンダ室、２０，２１，３１
……連通孔、２２……ステム、２３……第２のピ
ストン、２４……弁体シート、２５……弁座、２
６……第３のポート、２７……第２の弁部、２９
……第２の圧力ポート、３２，３３……ベローズ
。 The drawing is a sectional view showing a normal posture of a three-way valve according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Body, 2... Bonnet, 3... Cap, 4... First cylinder, 5... Second cylinder, 6... Partition wall, 7... First piston, 8
...Hollow stem, 9...Valve lid, 10...Valve chamber, 1
DESCRIPTION OF SYMBOLS 1... Valve body, 12... Valve seat, 13... Spacer, 14... First port, 15... Second port, 16... First valve part, 17, 28... Spring, 18...first pressure port, 19,30
, 34, 35... cylinder chamber, 20, 21, 31
... Communication hole, 22 ... Stem, 23 ... Second piston, 24 ... Valve body seat, 25 ... Valve seat, 2
6...Third port, 27...Second valve part, 29
...Second pressure port, 32, 33...Bellows.

Claims

[Claims for Utility Model Registration] (1) A first piston inserted into a first cylinder is attached near one end of a hollow stem, and a second piston inserted into a second cylinder is inserted through the hollow stem. A valve body of a first valve portion for opening and closing communication between the first and second ports is attached near the other end of the hollow stem, and a first valve body is attached near the other end of the stem. and a second valve body that opens and closes communication between the third ports, and the operation of each valve body is controlled by the elastic force of a spring and the supply and discharge of pressure to and from each cylinder. Three-way valve. (2) The utility model registration request is characterized in that each of the valve parts assumes a normally closed position due to the elastic force of a spring, and is opened by introducing positive pressure that resists the elastic force. The three-way valve described in item 1 of the scope. (3) The utility model registration request is characterized in that each of the valve parts assumes a normally closed position by supplying positive pressure against the elastic force of a spring, and opens when the pressure is released. The three-way valve described in item 1 of the scope.