Applications aerospace industry, petrochemical power, shipbuilding, metallurgy, steel, plating coating, gas fuel, environmental equipment, soot blowing dust, analytical measurement equipment, packaging machinery, textile, HVAC, cleaning equipment, garden irrigation, food industry and other control systems. Technical parameters Nominal diameter DN8-50 principle structure step direct-acting, pilot valve Brass, SS304 sealing materials NBR, FKM (diameter ≥15mm) Ambient temperature -10 ℃ ~ + 60 ℃ (Ex--20 ℃ ~ + 50 ℃) fluid temperature C2: -10 ℃ ~ 90 ℃ For fluid gas liquid (no solids) fluid viscosity ≤22mm2 / S connection threaded mounting horizontal mounting options coil up code Function Name Function Description K normally open valve is powered off, power off the valve opening E explosion-proof grade: ExmⅠ / ⅡT4 T with timer can be set on and off intervals * Ex-not with timer. Electrical parameters Supply voltage 220V AC 50 / 60Hz 24V DC pilot power AC: Path ≤8mm, 12VA; ≥22mm, 23VA; DC: Path ≤8mm, 11W; ≥22mm, 12W power direct-acting AC: diameter ≤ 15mm, 23VA; ≥20mm, 25VA; DC: Path ≤15mm, 12W; ≥22mm, 22W voltage tolerance of ± 10% common type of electrical connection: Standard explosion-proof junction box: M14 * 1.5,1.5M thin wire electric valve http : //www.cnlidea.net/diandongfa/15.html shutoff valve pneumatic piston http://www.cnlidea.net/qidongfa/44.html http://www.cnlidea.net/