Title:
HIGH PRESSURE VALVE
Document Type and Number:
Japanese Patent JPS58170974
Kind Code:
A
Abstract:
PURPOSE:To make a drive motive for valve stem in light weight, small size and simple construction, by furnishing a pressure balancing mechanism which the valve stem penetrates, in the valve box and by forming the sectional area of the chamber of this pressure balancing mechanism in such a way as enlarging toward the side of pressing the valve stem. CONSTITUTION:A valve stem 6 penetrates the valve box, and a pressure balancing mechanism 3 whose sectional area is larger in the chamber on the side pressing the valve stem 6. Thereby the force of heaving the valve stem 6 due to pressure on the valve stem 6 side will balance with the force of depressing due to the pressure balancing mechanism 3, so that the stem 6 can be operated with a minor force without being influenced by pressure. Thus the drive motive for valve stem can be made in lightweight, a small size and a simple construction.
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Inventors:
MORI YASUHIKO
Application Number:
JP5108682A
Publication Date:
October 07, 1983
Filing Date:
March 31, 1982
Export Citation:
Assignee:
HITACHI LTD
International Classes:
F16K1/36; F16K39/02; (IPC1-7): F16K1/36
Attorney, Agent or Firm:
Akio Takahashi
Previous Patent: JPS58170973
Next Patent: FLOW CONTROL VALVE WITH SELF-PURIFYING VARIABLE ORIFICE AND BOILER DEVICE EQUIPPED WITH SUCH VALVE
Next Patent: FLOW CONTROL VALVE WITH SELF-PURIFYING VARIABLE ORIFICE AND BOILER DEVICE EQUIPPED WITH SUCH VALVE