Toro P-220 24 VAC Electric Valve with 1" NPT Durable Glass-Filled Nylon Ensures the P-220 can operate at pressures up to 220 psi (15 Bar) Precise Pressure Control Option Compact EZ Reg dial-design technology (factory or field installed - no need to remove solenoid) Internal And External Manual Bleed Keeps valve box dry and easy to use Schrader Valve Pre-Installed Simple verification of downstream pressure Filter Screen On 2" (50mm) & 3" Models (75 mm) Allows for upstream filtration of water to ensure no clogging occurs inside the valve