发明名称 |
A FLOW CONTROL SYSTEM AND CONTROL VALVE HAVING CLOSURE ASSISTANCE |
摘要 |
A control valve includes a piston-housing having a hollow portion. The hollow portion has a first end, an open end, first and second internal chambers, and a fluid port configured to allow fluid to exit the second chamber. The first chamber is nearer the first end, and the second chamber is nearer the open end. A piston is located within the housing and is adapted for reciprocal motion. The piston includes a first and second seal-engaging portions. The first seal-engaging portion has a diameter that is less than the diameter of the second seal-engaging portion. |
申请公布号 |
CA2920105(A1) |
申请公布日期 |
2015.02.05 |
申请号 |
CA20142920105 |
申请日期 |
2014.08.04 |
申请人 |
DANIEL MEASUREMENT AND CONTROL, INC. |
发明人 |
LOGA, THOMAS HENRY;SEILER, DAVID J.;CROUCH, JUSTIN BLAKE;ZAHR, MICHAEL RICHARD ADIB;ALMAZAN, RAUL H. |
分类号 |
F16K1/34;F16K31/12 |
主分类号 |
F16K1/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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