032U8550, Danfoss Valve. The EV220B (032U8550) 15-50 SS is a universal, high performance indirect diaphragm-operated stainless steel valve. The 032U8550 offers a high flow capacity for many types of media. Slow closing design minimized water hammer. Built in pilot filter greatly increases dirt resistance. Cv from 4.7 to 47. Stainless steel body for more agressive media.