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: stainless steel and brass, stem: stainless steel (E), plastic (ER, EL), roller: plastic, lever: Al (anodized), brass 2 1 3 12 EL-18-310 3/2-way, mechanical spring return, roller operated with free return 2 1 3 12 E-18-310 3/2-way, mechanical spring return, stem operated Model-no.: E-18-310 ER-18-310 EL-18-310 Operating pressure (bar) 0 ... 12 0 ... 12 0 ... 12 Flow rate (Nl/min) 320 320 320 Actuating force at 6 bar (N) 27 17 17 Pre-stroke (mm) 1.5 2.5 2.5 Actuation stroke (mm) 2.5 2.5 2.5 Pre actuation stroke (mm) 1 3.5 3.5 Weight (kg) 0.094 0.102 0.099 Model-no.: E-18-510 ER-18-510 EL-18-510 Operating pressure (bar) 0 ... 12 0 ... 12 0 ... 12 Flow rate (Nl/min) 320 320 320 Actuating force at 6 bar (N) 27 17 17 Pre-stroke (mm) 1.5 2.5 2.5 Actuation stroke (mm) 2.5 2.5 2.5 Pre actuation stroke (mm) 1 3.5 3.5 Weight (kg) 0.118 0.125 0.123