Danfoss REG-SB SS HL 20 hand-operated regulating valve for the SVL Flexline industrial-refrigeration range, code 148B5951. The REG-SB SS HL is a manually-operated, globe-pattern regulating (throttling) valve in a stainless-steel housing; it acts as a normal shut-off valve in the closed position and as an adjustable throttle when open. It carries the B cone (higher capacity); the cone is positioned on the spindle and read against an outer scale for repeatable manual setting, and the vented cap can be exchanged for a hand wheel. This is the HL designation per the Danfoss model code. This SKU is the straightway body in 20 mm (3/4 in) butt-weld connections to EN 10220. Flow coefficient Kv 5 m3/h (Cv 5.8 gal/min). Maximum working pressure 52 bar (754 psig); media temperature range -60 to 150 C (-76 to 302 F). Stainless-steel construction suits corrosive-duty and stainless-piped HCFC, non-flammable HFC, R717 (ammonia) and R744 (CO2) systems. Built on the SVL Flexline modular platform: the complete top part is interchangeable so a REG-SA SS / REG-SB SS body can be converted to another SVL Flexline function (shut-off, check & stop, check valve or strainer) by changing the insert. REG-SA SS and REG-SB SS differ only in cone characteristic; select REG-SA SS for expansion/fine regulation and REG-SB SS for higher capacity at the same nominal size.