Title:
四方弁
Document Type and Number:
Japanese Patent JP3746838
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enable operation in a higher differential pressure, and prevent raising of a manufacturing cost in association with enlarging a rotor, a solenoid coil, and the like. SOLUTION: A four-way valve consists of a valve main body 2, a main valve seat 10 on which a low pressure leading-out port 11 and tow passage holes are drilled, a main valve element 8 for switching a flow passage of a high pressure leading-in port 12 and either one of tow passage holes, a pilot port 7 communicated with a pilot valve seat 8a, a pilot valve element 15a which is separated from and brought into contact with the pilot valve seat 8a, a driving means for turning the main valve element 8 and also removing the pilot valve element 15a in a vertical direction, a main valve element upper space 25, a main valve element lower space, and a high pressure leading-in port 12 communicated with the main valve element lower space 26. The pilot valve 8a is opened by the driving means, a differential pressure between the main valve element 8 upper space 25 and the main valve element 8 lower space 26 is generated, the main valve element 8 is turned in a condition apart from the main valve seat 10, and thereby, a flow passage is switched.
Inventors:
Mitsuo Sugita
Noboru Nakagawa
Noboru Nakagawa
Application Number:
JP13928496A
Publication Date:
February 15, 2006
Filing Date:
May 31, 1996
Export Citation:
Assignee:
Saginomiya Co., Ltd.
International Classes:
F16K11/074; F16K31/124; F04B53/10; F16K31/06; F16K31/08; F16K39/04; F25B41/04
Domestic Patent References:
| JP7016084U | ||||
| JP61038282A | ||||
| JP1307581A | ||||
| JP4254085A | ||||
| JP1032389B2 | ||||
| JP61038283A | ||||
| JP59151676A | ||||
| JP2054465B2 | ||||
| JP4007409Y2 | ||||
| JP3036774Y2 | ||||
| JP3114681U |
Attorney, Agent or Firm:
Hideo Takino
Yasuo Nakauchi
Yasuo Nakauchi