Aren't filters supposed to keep dirt and other contaminants out of your sprinkler valve? Most filters can and do keep out the big stuff, but it's the microscopic particles like minerals and algae that can build up over time and lead to premature failure of the irrigation valve.
The Hunter ICV-Series Valve's standard filter has four times the surface area of some manufacturers' valves. That can be a great start for keeping clean the water that travels up into the valve bonnet. However; even these large filters can still become clogged by large amounts of debris found in dirty water - that is, reclaimed water, wells, lakes, ponds and the like.
With the Hunter ICV Filter Sentry cleaning system, the filter is scoured clean by a wiper seal as it slides up the filter when the valve opens. The wiper continues to provide scrubbing action on the upper part of the filter during valve operation. The Hunter ICV Filter Sentry always strokes the full length of the filter; independent of flow control adjustments. Other self-cleaning filter systems are restricted in their cleaning ability when the diaphragm travel height above the body seat is restricted due to any flow control adjustments.
Hunter ICV Filter Sentry can be factory installed when a Hunter ICV-Series Valve is purchased or installers and maintenance personnel can add the unit to an existing Hunter ICV, quickly and easily out in the field.
Excellent in these dirty water situations; Hunter ICV Filter Sentry can give your valve extra insurance in "clean water" applications,; as well.