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Title:
PRESSURE MAINTAINING VALVE
Document Type and Number:
WIPO Patent Application WO/2020/015581
Kind Code:
A1
Abstract:
A pressure maintaining valve. The pressure maintaining valve comprises a valve body (1) and a pressure maintaining valve core (2). The pressure maintaining valve core (2) comprises a first conical spring (21), a follower diaphragm (22), a first corrugated pipe (23), a follower valve rod (24), a valve core plug block (25), a second corrugated pipe (26), and a second conical spring (27).

Inventors:
FAN YAOFEI (CN)
Application Number:
PCT/CN2019/095717
Publication Date:
January 23, 2020
Filing Date:
July 12, 2019
Export Citation:
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Assignee:
FAN YAOFEI (CN)
International Classes:
F16K17/22; F16K41/10
Foreign References:
CN108662224A2018-10-16
CN206503955U2017-09-19
CN206352678U2017-07-25
JP2016173048A2016-09-29
CN107120455A2017-09-01
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