Description Size 8 Component series A Maximum operating pressure 420 bar Maximum flow 2 l/min Features Cartridge valve Mounting cavity R/T-8A Direct operated proportional valve for system pressure limitation Actuation by proportional solenoid with central thread and detachable coil Fine adjustment of the command value pressure characteristic curve possible from the outside at the control electronics In case of power failure, minimum set pressure Product description Valves of type KBPS.8A are direct operated proportional pressure relief valves (pilot control valves) in seat design and are used to limit a system pressure. With a command value of 0 or in case of power failure, the minimum pressure is set. Operation by means of a proportional solenoid with central thread and detachable coil. The solenoid's interior is connected to the main port and filled with hydraulic fluid. Dependent on the electric command value, these valves can be used to steplessly set the system pressure to be limited. Type code 01 02 03 04 05 06 07 08 09 10 11 12 KBPS 8 A A / H C V * 01 Proportional pressure relief valve, direct operated (pilot control valve) KBPS Pressure rating 02 Up to 30 bar B Up to 50 bar C Up to 100 bar F Up to 150 bar H Up to 210 bar L Up to 250 bar N Up to 315 bar P Up to 350 bar R Up to 420 bar T 03 Component size 8 04 Minimum pressure with command value = 0 A 05 Component series A 06 High Performance and mounting cavity R/T-8A (see mounting cavity) H 07 Proportional solenoid, wet-pin C Power supply 08 Control electronics 12 V DC G12 Control electronics 24 V DC G24 Electrical connection 09 Without mating connector, with connector according to DIN EN 175301-803, separate order K4 Without mating connector, with connector DT 04 - 2PA (Deutsch plug) K40 Without mating connector, with connector AMP Junior-Timer C4 Seal material 10 FKM seals V 11 Standard version no code 800 mA coil -8 12 Further details in the plain text * Technical data general Type KBPS.8A Size 8 Component series A Weight kg 0.45 Installation position any - if it is ensured that no air can collect upstream of the valve. Otherwise, we recommend suspended installation of the valve. Ambient temperature range °C -20 … +120 hydraulic Type KBPS.8A Maximum flow l/min 2 Hydraulic fluid temperature range °C -20 … +80 Viscosity range mm²/s 15 … 380 Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1) Class 20/18/15 according to ISO 4406 (c) Hysteresis 2) % Range of inversion 2) % Response sensitivity 2) % Manufacturing tolerance of the command value pressure characteristic curve, related to 0.8 l/min; pressure increasing at command value 100 % 2) % Step response 0% → 100% 3) ms 70 100% → 0% 3) ms 70 1) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.b
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