Description Size 125 … 500 Component series 4X Maximum operating pressure 350 bar Maximum flow 50000 l/min Features Pilot operated check valve, with or without pre-decompression Flange connection Tank installation Cartridge valve without control open spool (check valve) Reduced switching noises due to damping measures Rotatable low-pressure connection (housing) Inductive position switch, optional Higher operating pressures, on request Product description Type SF . .1-1-4X/… Type SF . A0-1-4X/Q2G24Z Type SF . .0-1-4X/… Type SF . .0-1-4X/… Type SF 500 .1-1-4X/… 1 Housing with low-pressure flange, continuously rotatable 2 Name plate 3 Control cylinder 4 Connection G1 1/2 (draining); tightening torque MA = 300 Nm ±10 % 5 Ring 6 Mounting screws 7 Port Y; connection flange on request 8 Port X; connection flange on request 9 N1 Number of the flange mounting screws evenly arranged at the circumference (type of connection "A") 10 N2 Number of the valve mounting screws evenly arranged at the circumference 11 Version "without position switch" 12 Version "Q2G24Z" Type code 01 Prefill valve SF 02 Size 125 125 Size 150 150 Size 200 200 Size 250 250 Size 300 300 Size 350 350 Size 400 400 Size 500 (only version "A" and "B") 500 03 Flange connection A Tank installation B Screw-in cartridge valve without control spool (check valve) K 04 without pre-decompression 0 With pre-decompression 1 Spring feedback of the main poppet 05 Cracking pressure ≈ 0.2 bar 1 06 Component series 40 to 49 (40 to 49: unchanged installation and connection dimensions) 4X Spool position monitoring 07 Without position switch no code With inductive position switch, position monitoring "open", with connector plug (only version "A0") Q2G24Z Seal material 08 NBR seals no code Other seals on request Connection thread 09 Pipe thread according to ISO 228-1 no code Special version 10 Standard no code Operating pressure 420 bar (restricted size selection, please contact us) SO102 Operating pressure 500 bar (restricted size selection, please contact us) SO104 11 Further details in the plain text * 01 02 03 04 05 06 07 08 09 10 11 SF – 1 – 4X / * Technical data general Nenngröße 125 150 200 250 300 350 400 500 Masse Version "A" kg 75 135 185 365 625 1200 1580 3400 Version "B" kg 60 105 145 295 545 1000 1400 3100 Version "K" kg 45 90 105 205 355 670 950 - Installation position any hydraulic Size 125 150 200 250 300 350 400 500 Maximum operating pressure Anschluss A bar 16 Port B bar 350 Anschluss X bar 350 Port Y bar 350 Cracking pressure 1) bar ≈ 0.2 Maximum flow 2) Case of application 1 l/min 2500 3900 5600 10000 15600 22480 30600 50000 Case of application 2 l/min 2500 3900 5600 10000 14000 19050 24880 40000 Case of application 3 l/min 1700 2440 4340 6775 9750 13280 17340 28000 Case of application 4 l/min 1470 2120 3770 5890 8480 11540 15080 25000 Case of application 5 l/min 590 850 1510 2360 3400 4620 6050 Druckflüssigkeit see table Hydraulic fluid temperature range °C -30 … +80 Viscosity range mm²/
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