发明名称 |
Pilot valve for pneumatic control systems with improved poppet |
摘要 |
An improved mechanically actuated pilot valve is shown in which the output pressure from the valve is dependent upon a flapper position rather than upon force is applied to the flapper. The pilot valve has a valve body with a gas inlet chamber, a gas outlet chamber and an inner connecting gas passage for controlling the flow of gas through the valve. An improved poppet having primary and secondary sealing regions cooperates with a valve seat provided in the gas passage and with a hollow actuating stem which protrudes from the valve body to control the flow of control gas through the valve when the actuating stem is contacted by an external actuator, such as a flapper element.
|
申请公布号 |
US5158111(A) |
申请公布日期 |
1992.10.27 |
申请号 |
US19910806496 |
申请日期 |
1991.12.13 |
申请人 |
QUALITY MACHINE & SUPPLY, INC. |
发明人 |
LAMBERT, FLOYD;SKAGGS, JACK |
分类号 |
G05D9/04;G05D16/16 |
主分类号 |
G05D9/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|