AMF Catalogue Hydraulic clamping systems Page 269
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Valves No. 6918 Sequence Valve cartridge flange Possible statically overload ~1,5xp max. Article no. Order no. CAD min. max. Q Direction Ambient Viscooperating operating of flow temp. sity pressure pressure [bar] [bar] [l/min] [°C] [cSt] 408401 6918-2-02-03 8 80 20 P-A 325118 6918-2-02-04 16 160 20 P-A 320366 6918-2-02-02 30 500 20 P-A DI-1 Seal Order No. OR-1 O-ring Order No. -40 - +80 10-500 570345 570346 -40 - +80 10-500 570345 570346 -40 - +80 10-500 570345 570346 Weight [g] 150 150 150 Design: Steel housing, nitrided. Sealing nut galvanized. All functional components hardened and ground. Balls out of roller bearing steel. Application: The pressure sequence valve is used where another hydraulic system or another consumer should be activated after achieving a specified pressure. If a curcuit is designed with several sequence valves, it must be observed that the pressure in this circuit is always adhisted in the last respective pressure stage. The switching pressure for this type, irrespective of the pressure on the output side (consumer side) remains largely constant. Note: For disassembly of the pressure valve please release first SW (AF) 24, then SW 22. For assembly please use reverse sequence and observe max. seating torque. The pressure difference between P and A depends on the preload of the adjustment spring. Installation dimensions: Tapping drill hole 118° Tapping drill hole 140° countersink max. Ø20 No. 6918-10 Pressure Relief Valve for pipeline installation Order no. countersink max. Ø20 Ambient Viscosity Article no. min. operating max. operating max. pressure Q temp. in T pressure pressure [°C] [cSt] [bar] [l/min] [bar] [bar] 288225 6918-10-001 30 160 20 20 65375 100 500 500 20 6918-10 -40 - +80 -40 - +80 Weight [g] 10-500 200 10-500 200 Design: For 6918-10-001 housing made of zinc, for 6918-10 housing made of ductile iron. Control piston made of steel, hardened. Can be sealed on setting spindle. Application: The pressure relief valve is used to protect against exceeding the maximum permissible pressure for the system (safety valve) or to limit operating pressures. Once the set pressure is reached, the valve opens, the excess liquid in the system flows back into the tank via the T line of the pressure relief valve. The pressure relief valve is not suitable for the protection of pressure equipment as defined by the PED 97/23 / EC. Diagram: Characteristic Proprietary flow resistance Subject to technical alterations. ANDREAS MAIER GmbH & Co. kg ∙ Phone: +49 711 5766-196 ∙ Web: www.amf.de Hydraulic clamping systems 269
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