Designed for use with High Pressure refrigerants such as R410A and CO2. Media (liquid side): fresh water, neutral brine. Media temperature range, WVFX 10-25: –25 - +130°C. Opening differential pressure: max. 10 bar. Max working pressure, condenser side, WVFX 10-25 (High Pressure versions): 45.2 bar. Max working pressure, liquid side, WVFX 10-25: 16 bar.