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Patent Searching and Data


Title:
PRESSURE REDUCING VALVE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/032359
Kind Code:
A1
Abstract:
Provided are: a pressure reducing valve that is made of a synthetic resin and that can be easily dimensionally managed; and a manufacturing method therefor. A pressure reducing valve 1 according to the present invention comprises: a housing 2 having an inlet 2a and an outlet 2b and allowing a fluid flowing in through the inlet 2a to pass through the inside and flow out through the outlet 2b; a valve body 3 movably housed in the housing 2; a valve seat 4 installed in the housing 2; and a biasing member 5 that biases the valve body 3 in a direction away from the valve seat 4. The pressure reducing valve is configured such that an increase in pressure of the fluid at the outlet causes the valve body 3 to abut against the valve seat 4 countering a biasing force of the biasing member 5, thereby enabling cutting-off of flowing of the fluid in the housing 2. The housing 2 is provided with a housing body 21 and a cap 22, and the cap 22 is welded to a synthetic resin member (valve seat frame body 41).

Inventors:
NEGISHI ISAO (JP)
HISHINUMA KATSUYUKI (JP)
ITO FUMIHIRO (JP)
Application Number:
PCT/JP2022/021100
Publication Date:
March 09, 2023
Filing Date:
May 23, 2022
Export Citation:
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Assignee:
NIPPON THERMOSTAT KK (JP)
International Classes:
F16K17/30
Domestic Patent References:
WO2020032156A12020-02-13
Foreign References:
JP2009085301A2009-04-23
JP2020041616A2020-03-19
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