发明名称 |
Vorsteuerventil für Regelventile und Betriebsverfahren |
摘要 |
<p>A pilot valve (40) for a control valve (14) has a separate auxiliary source of high pressure fluid (106) for the operation of the pilot valve (40). The dome chamber (36) of the control valve (14), the inlet fluid chamber (72), and the intermediate fluid chamber (104) are exposed only to the auxiliary source of fluid (106). Thus, process fluid from the sensing line (62) does not contaminate the spool valve (76) or the dome chamber (36).</p> |
申请公布号 |
DE69118983(D1) |
申请公布日期 |
1996.05.30 |
申请号 |
DE1991618983 |
申请日期 |
1991.05.16 |
申请人 |
KEYSTONE INTERNATIONAL HOLDINGS CORP., HOUSTON, TEX., US |
发明人 |
MCNEELY, MICHAEL D., KATY, TEXAS 77449, US |
分类号 |
F16K31/126;G05D16/18;(IPC1-7):F16K17/10;G05D16/00 |
主分类号 |
F16K31/126 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|