Hunter GT-880-E-48-P8 GT-880E Golf Rotor Full-Circle Opposing Nozzle Configuration Electric Valve-in-Head Design Nozzle 48 installed 80 PSI. These rotors have Total-Top-Serviceability, powerful G-800 Series gear drives, and the largest flange compartment in the industry to accommodate all two-way module components. Electric Valve-in-Head with adjustable pressure regulation, on-off-auto selector, 190 mA (350 mA inrush) solenoid with captive plunger and internal downstream bleed