Stop valve Bm stop valve is a kind of manual stop valve, applied to the liquid, air section and heated air in the lines of refrigeration units. Specifications Available with all fluorinate refrigerants. The valve could be fully closed with minimum torque exerted on teflon valve board. The three stainless steel shims can effectively prevent leaking during the entire life cycle of the valve. The hidden valve cover helps prevent moisture penetration. Liquid temperature range:-40~+120f¦; Max. Working pressure: 3.5mpa. Note: kv is the water flux when the pressure decreases to 1 bar and ¬-=1000kg/m3.Unit:m3/h