发明名称 |
Rotary cock with generally spherical valve member |
摘要 |
A ball valve has a movable upstream valve seat with a metal lip engageable with the valve ball under pressure generated by a bellows section or metal membrane connected between the movable valve seat and the housing. The force of fluid pressure against this moveable valve seat is relieved by operation of a bypass valve connecting opposite sides of this seat. The ball can also have a deformable metal lip.
|
申请公布号 |
US4575045(A) |
申请公布日期 |
1986.03.11 |
申请号 |
US19850735916 |
申请日期 |
1985.05.20 |
申请人 |
VANATOME |
发明人 |
MARTIN, ROGER;BUFFA, LAURENT |
分类号 |
F16K5/20;F16K39/06;(IPC1-7):F16K25/00 |
主分类号 |
F16K5/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|