Technical details Connection M5 Nominal size 3.2 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 and POM, inner parts: Al, brass, stainless steel Valves in accordance with 2014/34/EU (ATEX) available. (Chapter 13) 5/2-way valves L-25-511 5/2-way, single pilot, mechanical spring return L-25-520 5/2-way, double pilot L-25-311 3/2-way, single pilot, mechanical spring return Model-no.: L-25-311 L-25-320 L-25-511 L-25-520 Operating pressure (bar) 1 ... 10 0 ... 10 0 ... 10 0 ... 10 Pilot pressure (bar) see diagram 2 ... 10 3 ... 10 2 ... 10 Flow rate (Nl/min) 160 160 160 160 Weight (kg) 0.065 0.068 0.084 0.085