Standard_Parts_Catalogue

Page 139 | 1.2 Operating by Using Machine and Device Handles GN 628.5 Cabinet U-Handles with Pneumatic Switching Function continued Connections and switching positions of directional control valves 3/2-way valve (Type A) In the neutral position the directional control valve allows compressed air to pass from 1 to 2. By pressing the button, the compressed air connection 1 is closed, and the working connection from 2 to 3 is vented. When the button is released, the directional control valve automatically returns to the neutral po- sition. Use: for pneumatic pilot controls, single-acting cylinders 3/2-way valve (Type B) In the neutral position, the directional con- trol valve vents the working connection 2 to 3. Compressed air connection 1 is closed. Pressing the button allows compressed air to pass from 1 to 2. When the button is re- leased, the directional control valve automa- tically returns to the neutral position. Use: for pneumatic pilot controls, single-acting cylinders 5/2-way valve (Type A) In the neutral position, the directional control valve allows compressed air to pass from 1 to 2, and the working connection 4 is simulta- neously vented at connection 5. By pressing the button, the compressed air connection 1 is switched from 2 to 4, and the working con- nection from 2 to 3 is vented. When the but- ton is released, the directional control valve automatically returns to the neutral position. Use: For double-action cylinders and drives Connections 1: Compressed air connection 2 and 4: Working connections 3 and 5: Vent connections Technical data Operating medium Filtered compressed air Operating pressure 2 ... 10 bar Working temperature with dry air: -20 °C ... + 80 °C with air containing oil: 0 °C ... + 80 °C Normal rated flow 130 NI/min (6 bar, free exhaust air) Actuation force 22 N (independent of operating pressure) Connection Quick coupling for pneumatic hoses, diam. 4 mm Nominal diameter of air passage diam. 2.5 mm