Title:
WATER PRESSURE DIRECTION AND FLOW CONTROL VALVE AND ITS WATER PRESSURE CIRCUIT
Document Type and Number:
Japanese Patent JP2019190510
Kind Code:
A
Abstract:
To provide a water pressure direction and flow control valve using water as working fluid.SOLUTION: A water pressure direction and flow control valve is provided with a housing and a spool constituted by rust-proof material. The housing comprises a first pushing pressure chamber, a second pushing pressure chamber, an input port, a first output port, a second output port and a drain port. The spool has both end parts mounted at the first pushing pressure chamber and the second pushing pressure chamber, and its position is controlled by a normal and inverse rotatable pump connected to the first and second pressing pressure chambers. According to the position, it is possible to communicate between the input port and the first output port or between the input port and the second output port. In addition, a bearing for depressing the spool with working water is installed between the housing and the spool to reduce a friction resistance between the housing and the spool.SELECTED DRAWING: Figure 1
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Inventors:
MIKI MASAYUKI
Application Number:
JP2018081255A
Publication Date:
October 31, 2019
Filing Date:
April 20, 2018
Export Citation:
Assignee:
RIBEKKUSU KK
International Classes:
F16K11/07; F16K3/24; F16K31/383
Attorney, Agent or Firm:
Moriwaki Patent Office