Toro 570Z-4P-PRXCOM 570z Series 4" Pop-Up Spray Head with Pressure Regulated Check Valve. RUGGED – FLEXIBLE – VERSITILE – RELIABLE: Toro® 570Z Series spray heads provide a durable solution for residential and commercial contractors to satisfy all installation and retrofit requirements. In combination with Toro spray and rotating nozzles, 570Z Series spray heads can be configured in hundreds of combinations and present an unparalleled range of flexibility. Available in 2”, 3”, 4”, 6” and 12” models with both bottom and side inlet thread options, Toro 570Z Series spray heads are further available with in-stem X-Flow® Technology and Pressure Regulating water-saving features. Trusted for over 25 years, Toro’s 570Z Series spray heads are the ideal choice.