Sprinkler with removable valve seat
First Claim
1. In an irrigation sprinkler having a hollow sprinkler case with a sprinkler member removably mounted therein, an inlet fitting on the sprinkler case for connection to a water supply line, and an inlet control valve removably mounted within said sprinkler case for controlling water inflow through said inlet fitting into said case, the improvement comprising:
- a seat ring removably mounted on said sprinkler case generally at said inlet fitting and defining a valve seat for engagement by said inlet control valve to control water inflow through said inlet fitting into said case;
said seat ring being accessible through said case upon removal of said sprinkler member and said inlet control valve from said case to permit removal and selective replacement of said seat ring without requiring disassembly of said case from the water supply line.
2 Assignments
0 Petitions
Accused Products
Abstract
An irrigation sprinkler of the type having an inlet control valve is provided with a removable valve seat formed integrally with an inlet filter screen. The valve seat is positioned to engage a valve head to normally prevent water inflow to a sprinkler case, whereas the filter screen prevents entry of small rocks and other particulate debris into the sprinkler case when the inlet control valve is open. The valve seat is removable from the top of the sprinkler case, without requiring disconnection of the case from a water supply line, to permit flushing of collected debris or to permit replacement of a damaged valve seat.
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Citations
19 Claims
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1. In an irrigation sprinkler having a hollow sprinkler case with a sprinkler member removably mounted therein, an inlet fitting on the sprinkler case for connection to a water supply line, and an inlet control valve removably mounted within said sprinkler case for controlling water inflow through said inlet fitting into said case, the improvement comprising:
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a seat ring removably mounted on said sprinkler case generally at said inlet fitting and defining a valve seat for engagement by said inlet control valve to control water inflow through said inlet fitting into said case; said seat ring being accessible through said case upon removal of said sprinkler member and said inlet control valve from said case to permit removal and selective replacement of said seat ring without requiring disassembly of said case from the water supply line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. In an irrigation sprinkler having a hollow sprinkler case with an upper end and a lower end, a sprinkler member removably mounted within said case, an inlet fitting generally at the lower end of said case and adapted for connection to a water supply line, and an inlet control valve removably mounted within said sprinkler case for controlling water inflow through said inlet fitting into said case, the improvement comprising:
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a seat ring removably mounted on said sprinkler case generally at said lower end and defining a valve seat for engagement by said inlet control valve to control water inflow through said inlet fitting into said case; and an inlet filter screen connected to said seat ring and positioned generally within said inlet fitting upstream from said valve seat when said seat ring is mounted on said case; said seat ring being accessible from the upper end of said case upon removal of said sprinkler member and said inlet control valve for removal of said seat ring and said filter screen together and to permit selective replacement thereof without requiring disassembly of said sprinkler case from the water supply line. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification