Technical details Connection G1/8 Nominal size 4 mm Temperature range -10°C ... +70°C Medium Filtered, oil-free and dried compressed air according to ISO 8573-1:2010, Class 7:2:4, instrument air, free of aggressive additives. Alternatively the pressure dew point must be at least 10°C below lowest occurring ambient temperature. Materials Body: Al (anodized), seals: NBR, inner parts: Al, stainless steel and brass, stem, lever: stainless steel, roller: plastic 3 12 2 1 E-28-310 3/2-way, mechanical spring return, stem operated Model-no.: E-28-310 ER-28-310 Operating pressure (bar) 0 ... 12 0 ... 12 Flow rate (Nl/min) 210 210 Actuating force at 6 bar (N) 16 9 Pre-stroke (mm) 1 2 Actuation stroke (mm) 1 1 Pre actuation stroke (mm) 2 2 Weight (kg) 0.053 0.063 Technical data Dimensions 1 = pressure inlet 2 = outlets 3 = exhausts 1 3 22 16 ? 6 38 32 ? 4.5 7 16 32 1 3 2 1 3 26 16 9