"Built-in in-stem pressure regulation Maximum nozzle efficiency regardless of inlet pressure. Heavy-duty body and cap construction. Multi-thread buttress design withstands the harshest environments. Pressure activated, multi-function, no flow-by wiper seal. Easy to remove and clean; treated with UV inhibitors to ensure long life. Compatible with all Female Threaded Nozzles, Accepts adjustable, fixed and specialty nozzles from Hunter and all major brands. Factory-installed drain check valve for up to 10 feet elevation change, Eliminates landscape damage from flooding and erosion. Ratcheting riser for quick arc alignment, Make adjustments while sprinkler is operating. Heavy-duty spring, For positive retraction under any conditions. Innovative pop-top flush plug design Allows limited flow permitting controlled directional flushing ."Model: INST-04-CV
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