100P3 - 3" Century Plus Irrigation Valve - Internal Bleed - Flow Control - 100 SeriesIrritrol 100P3 3" Century Plus Irrigation Valve Internal Bleed Flow Control 100 Series The Irritrol 100 Series (Century PLUS) is an excellent example of a good valve getting better. Tracing its origin to the highly popular Century Series, the 100 Series delivers reliable performance with a host of enhanced features. Offered in a globe angle configuration with sizes ranging from one to three inches, the 100 Series features a pressure range of 20 220