* 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. * Optional factory-installed drain check valve for up to 7 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. * 1/2" standard side inlet on 6" and 12" models. * Installation convenience for deep seated bodies.