초록 ▼

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

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.

대표청구항 ▼

[ What is claimed is:] [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 controlli

[ What is claimed is:] [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.