Title:
FIXED BALL VALVE
Document Type and Number:
WIPO Patent Application WO/2019/140855
Kind Code:
A1
Abstract:
Disclosed is a fixed ball valve, comprising a ball (22), a valve seat (23), and a valve seat sealing ring (28), wherein the valve seat sealing ring (28) is in contact with the ball (22) and generates a highest contact point (51) and a lowest contact point (52); and the outer diameter (D2) of the valve seat is greater than the lowest contact point (52) and smaller than the highest contact point (51). The sealing performance of a double piston valve seat is achieved by a single piston valve seat, so that the production cost is greatly reduced and the sealing stability is improved compared with the double piston valve seat.
Inventors:
HE, Zenghua (Rm. C 11th Fl, 356 Ao Men Road Putuo Area, Shanghai 0, 200060, CN)
Application Number:
CN2018/090378
Publication Date:
July 25, 2019
Filing Date:
June 08, 2018
Export Citation:
Assignee:
HE, Zenghua (Rm. C 11th Fl, 356 Ao Men Road Putuo Area, Shanghai 0, 200060, CN)
International Classes:
F16K5/08
Domestic Patent References:
| WO2017141221A1 | 2017-08-24 |
Foreign References:
| CN104089044A | 2014-10-08 | |||
| CN205479467U | 2016-08-17 | |||
| CN103727259A | 2014-04-16 | |||
| CN102748496A | 2012-10-24 | |||
| JP2002276830A | 2002-09-25 |
Attorney, Agent or Firm:
ALLBRIGHT LAW OFFICES (LIU Minxuan, 12/F Shanghai Tower, No.501, Yincheng Middle Rd., Pudong New Area, Shanghai 0, 200120, CN)
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