Danfoss SVA-DL 300 angleway shut-off (stop) valve for industrial refrigeration, code 148B3771. Low-temperature steel body with butt-weld connections to EN 10220, nominal size 300 mm (12 in). Maximum working pressure 40 bar (580 psig); media temperature range -60 to 150 C (-76 to 302 F). Flow coefficient Kv 1610 m3/h (Cv 1867.6 gal/min). Delta Pressure Low (SVA-DL) is a two-step valve for pressure relief, designed with a restriction in the opening function (high differential pressure applied from the side port, reduced pressure from the bottom port). Both SVA-DL and SVA-DH have internal backseating, so the spindle seal can be replaced while the valve is still under pressure; the valve dismantles in line for inspection and repair. Supplied with handwheel. For HCFC, non-flammable HFC, R717 (ammonia) and R744 (CO2) industrial refrigeration systems. PED category IV.