Hot gas defrost, a common and efficient method defrosting used within industrial refrigeration, can pose a safety risk if hot gas injection into the evaporators is not carefully controlled. Model ICSH dual-position solenoid valve provides a gradual, time-controlled opening for a smooth pressure buildup in the evaporator before it opens the flow to 100 percent for full defrost. This two-step approach prevents hydraulic shocks, thereby improving the overall safety of the refrigeration system. Unless the soft opening in step one has been activated, the default valve configuration ensures that the full opening in step two does not occur. The refrigeration valve complies with the latest IIAR safety recommendations for soft gas applications.