发明名称 |
Fluid flow control valve |
摘要 |
A fluid flow control valve within a pop-up sprinkler arrests fluid flow through a riser of the pop-up sprinkler under abnormal flow conditions, such as when the riser is broken or a sprinkler head is removed from the riser. The riser, which is movable relative to a housing of the pop-up sprinkler, is attached to a sprinkler head which distributes water to the surrounding area. A valve seat device is disposed within the riser. A stopper is positioned within a valve passageway defined by the valve seat device. The stopper selectively engages the valve seat to inhibit water flow through the riser under abnormal flow conditions. A biasing device prevents the stopper from engaging with the valve seat under normal flow conditions.A fluid flow control valve assembly within a swing joint of an irrigation system includes a first within a first elbow fitting and a second valve within a second elbow fitting. The first and second elbow fittings are movable relative to each other and together form the swing joint. Each valve includes a valve seat device and a stopper positioned within a valve passageway defined by the valve seat device. A biasing device positioned between the stoppers of the first and second valves prevents the second stopper from seating against the second valve seat under normal flow conditions.
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申请公布号 |
US6263912(B1) |
申请公布日期 |
2001.07.24 |
申请号 |
US19990346106 |
申请日期 |
1999.06.30 |
申请人 |
WHETSTONE GROUP INTERNATIONAL, INC. |
发明人 |
BROWN JOSEPH P.;GYBEN CHRISTOPHER J.;NORUM EDWARD M. |
分类号 |
B05B15/10;F16K17/34;(IPC1-7):F16K17/34 |
主分类号 |
B05B15/10 |
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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