L.8S Series Proportional Directional Valves
The L.8S valves series was developed for mobile applications and it features a robust design and small external dimensions. A very flexible building-block system, the L.8S valve range has elements that can be selected and assembled into a valve block that provides the necessary functions and precisely meets the needs of the application.
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Specifications
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MECHANICAL
Recommended Mounting Attitude With spool axis horizontal - Fluid Temperature -25°C to +80°C - Ambient Temperature -25°C to +50°C - Viscosity Range 10 to 380 mm²/s - Hydraulic Fluid Recommendation: High-quality fluids with a mineral-oil base, such as HLP oils to DIN 51524 part 2. - Seal Material NBR - Minimum Fluid Cleanliness Level ISO 4406 code 20/18/15 - Inlet Pressure P+D Max. 300 bar The stated pressures are the maximum absolute pressure limits for a tank line pressure of 10 bar. Note: Some components have lower individual pressure ratings. Actuator Pressure A+B Max. 300 bar The stated pressures are the maximum absolute pressure limits for a tank line pressure of 10 bar. Note: Some components have lower individual pressure ratings. Intermittent Pressure Max. 315 bar Max. 10 sec/min Return Line Pressure Max. 40 bar "100 bar return line pressure for brief periods, with max. inlet pressure 210 bar. 210 bar for P and T in individual cases. For higher pressures, contact Bucher Hydraulics." Nominal Voltage Range of Switching Solenoids 12V ≙ 10.8 to 14 V DC 24V ≙ 21.6 to 28 V DC Servo Frequency preferable 100 Hz - Threaded Ports to DIN 3852 and DIN ISO 228-1 - Tie Bolts M8, tensile grade 10.9 Tightening Torque 30Nm Corrosion Protection Valve Blocks Primed Color: black RAL9005 - Coating Thickness 30 to 50 μm - Nominal Flow Rate Max. 150 l/min - Actuator Flow Rate Max. 75 l/min - -
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