Title:
NOVEL DOUBLE-PISTON-EFFECT VALVE
Document Type and Number:
WIPO Patent Application WO/2016/029689
Kind Code:
A1
Abstract:
Disclosed is a double-piston-effect valve. Two valve seats (2) are symmetrically arranged in valve decks (1) on two sides. A piston ring (3) is arranged on a back face of the valve seat (2), an internal O-shaped ring groove (4) is formed in the inner circumferential direction of the piston ring (3), an external O-shaped ring groove (5) is formed in the outer circumferential direction of the piston ring (3), an O-shaped ring is arranged in the internal O-shaped ring groove (4) and the external O-shaped ring groove (5) in a matching mode, and two semicircular notches (7) are also symmetrically formed on a protruding part (6) of the piston ring (3). The double-piston-effect valve is good in sealing effect, low in cost, easy to manufacture, easy to assemble, and easy to replace and maintain.
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Inventors:
CHEN JEROME CHIN LUNG (CA)
LI MICHAEL QIANG (CA)
LI MICHAEL QIANG (CA)
Application Number:
PCT/CN2015/075042
Publication Date:
March 03, 2016
Filing Date:
March 25, 2015
Export Citation:
Assignee:
FORTUNE MFG CO LTD (CN)
International Classes:
F16K5/20
Foreign References:
| CN201925517U | 2011-08-10 | |||
| CN2557763Y | 2003-06-25 | |||
| GB2188710A | 1987-10-07 | |||
| CN204140929U | 2015-02-04 | |||
| US20100276620A1 | 2010-11-04 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
北京集佳知识产权代理有限公司 (CN)
北京集佳知识产权代理有限公司 (CN)
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