Title:
PRESSURE CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2017/046955
Kind Code:
A1
Abstract:
Provided is a pressure control valve provided with: a main valve section provided with a main valve body having a backpressure chamber on the inside thereof, and a valve housing body that is provided with a main valve seat in which said main valve body can be seated and has a pilot chamber for slidably housing the main valve body; and a pilot valve section that is provided with a pilot valve body and a pilot valve seat member having a pilot valve seat in which said pilot valve body can be seated, and in which the pilot valve body separates from the pilot valve seat to open when the pressure inside the pilot chamber has exceeded a prescribed pressure, wherein a damper is provided between the main valve body and the pilot valve seat member to stabilize the operation of the main valve body and suppress the occurrence of defects such as vibration in a hydraulic circuit and the generation of abnormal noise.
Inventors:
SONOKAWA SHOGO (JP)
Application Number:
PCT/JP2015/076758
Publication Date:
March 23, 2017
Filing Date:
September 18, 2015
Export Citation:
Assignee:
SHIMADZU CORP (JP)
International Classes:
F16K47/02; F16K17/04
Foreign References:
| JP2009162349A | 2009-07-23 | |||
| JP2000230669A | 2000-08-22 | |||
| JPS5867177U | 1983-05-07 | |||
| US20110114203A1 | 2011-05-19 |
Attorney, Agent or Firm:
AKAZAWA, Kazuhiro (JP)
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