发明名称 |
VALVE |
摘要 |
A valve comprises a housing (1) having an inlet (4) and an outlet (5), and a pressure sensing port (8). A piston (6) slides in a part (3) of the housing (1) in response to a difference between a first fluid pressure at the pressure sensing port on the one side of the piston, and a second fluid pressure at the inlet and/or outlet on the other side of the piston (6). A valve member (7) carried by the piston is operable thereby to close the inlet (4) when said second fluid pressure is less than a value sufficiently greater than said first fluid pressure. The valve member (7) is movable with respect to the piston (6) to facilitate closing of the inlet (4), in response to a fluid flow from the housing (1) to the inlet (4), when the piston is not acting to close the inlet.
|
申请公布号 |
CA2513078(C) |
申请公布日期 |
2012.03.20 |
申请号 |
CA20032513078 |
申请日期 |
2003.12.31 |
申请人 |
AAF-MCQUAY INC. |
发明人 |
ROLL, JOHN MICHAEL;WOODARD, PETER MICHAEL;ELLINGHAM, ANDREW ALBERT;YOUNG, TERENCE WILLIAM THOMAS |
分类号 |
G05D16/18;F25B41/04;G05D16/10 |
主分类号 |
G05D16/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|