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Accessories - Function fittings Series 55 Tecno-FUN ► Blocking valve 551.13T.A.B.XX Coding: tYPE T 1 = Unidirectional 2 = Bidirectional A 14 B COnnECtiOn A SEE CONNECTIONS LIST COnnECtiOn b SEE CONNECTIONS LIST CONNECTIONS LIST M5 00 = None D4 = Straight Ø4 3.2 1 D6 = Straight Ø6 B G4 = Rotating banjo Ø 4 G6 = Rotating banjo Ø 6 A G8 = Rotating banjo Ø 8 18 30 L1 = Female banjo G1/8" M1 = G1/8" male M2 = G1/4" male F1 = G1/8" female 15 Example: 551.131.D4.D4.XX In line blocking valve, unidirectional. Connections "A" and "B" Tube Ø4 nOtE : For the dimension including cartridges see page Accessories - Function fittings Piloting curves Construction characteristics - the blocking valve function is to maintain the circuit downstream pressure in the event of loss of supply pressure. it is normally fitted directly onto the cylinder connections ports in order to ensure that, in case of accidental loss of the supply pressure, the units positions is maintained. this is achieved as the blocking valve preserves the pressure inside the pressurised chamber. blocking valves can be unidirectional or bidirectional. - in the unidirectional version the air flow is free in one direction while in order to allow the flow in the opposite direction is necessary to send a pneumatic signal to the unit connection 12. - the bidirectional version requires a pneumatic signal on connection 12 to allow the flow in any of the two directions. - on din rail using the relevant adaptor kit (see accessories) - With 90° bracket (see accessories) - directly on the support plate thanks to two through holes on the body technical characteristics Fluid Filtered air. no lubrication needed, if applied it shall be continuous Working ports size Max working pressure (bar) See CONNECTIONS LIST 0,5 ÷ 10 Flow rate at 6 bar with Δp=1 (Nl/min) 285 Flow rate at 6 bar with free exhaust (Nl/min) 450 temperature °C Weight (g) Overall dimensions and technical information are provided solely for informative purposes and may be modified without notice -5 ÷ +50 26 1 | 357 Air distributiOn 25 18.5 39 D8 = Straight Ø8
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