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, 2 1 3 12 TK-28-311 3/2-way, mechanical spring return, actuator push button Model-no.: TK-28-311 TK-28-320 TK-28-520 Operating pressure (bar) 2 ... 10 2 ... 10 2 ... 10 Flow rate (Nl/min) 500 500 480 Actuating force at 6 bar (N) 11 3 4 Weight (kg) 0.061 0.061 0.078 Technical data Dimensions TK-28-3xx TK-28-520 M16x1.5 36 16 16 16 30 70 ? 4.5 48 16 3 1 1 = pressure inlet 2,4 = outlets 3,5 = exhausts