Hunter ICV101GFSR 1" Icv Filter Sentry Valve The commercial-grade ICV was built to work seamlessly with the most demanding systems. It boasts an array of reliable features like a fabric reinforced EPDM diaphragm and seat, and flow control. It can consistently operate at up to 220 PSI, and will continue working through difficult circumstances like high velocities, fluctuating flow rates, and challenging water conditions. In addition to its unmatched reliability, the ICV is also exceptionally easy to maintain. Its bonnet fasteners can be loosened and tightened using a variety of common contractor tools. A Filter Sentry option is also available for applications that involve dirty water. The Filter Sentry system keeps the valve free of debris found in reclaimed water or ponds. For the ultimate reliability in high pressure situations, the ICV is clearly the professional's ultimate choice.