Description Size 10 Component series 3X Maximum operating pressure 315 bar Maximum flow 100 l/min Features Cartridge valve 4 pressure ratings 4 optional adjustment types: • Rotary knob • Sleeve with hexagon and protective cap • Lockable rotary knob with scale • Rotary knob with scale Product description Pressure valves type DR 10 K.. are pilot-operated pressure reducing valves for block design installation. They are used for reducing a system pressure. The secondary pressure is set via the adjustment type (4). In initial position, the valves are open. Hydraulic fluid can flow from main port 2 to 1 without restrictions. The pressure in main port 1 acts simultaneously at main spool (1) and via the nozzle (2) at the spring-loaded inside of the main spool (1). Similarly, it acts via nozzle (7) on the pilot poppet (8). If the pressure in main port 1 exceeds the value set at spring (5), the pilot poppet (8) opens. Hydraulic fluid flows from the chamber of spring (3) via the nozzle (7), the pilot poppet (8) and the spring chamber (6) into main port 3. The main spool (1) assumes its control position and keeps the value in main port 1 set at the spring (5) constant. The pilot oil return from the spring chamber (6) is always realized externally via main port (3). Notice! Counter pressures (main port 3) add up to the set pressure. Type DR 10 K5-3X/.YM Type code 01 02 03 04 05 06 07 08 09 10 DR 10 K – 3X / Y M * 01 Pressure reducing valve, pilot-operated DR 02 Size 10 10 03 Cartridge valve K Adjustment type 04 Rotary knob 4 Sleeve with hexagon and protective cap 5 Lockable rotary knob with scale 6 1) Rotary knob with scale 7 05 Component series 30 ... 39 (30 ... 39: unchanged installation and connection dimensions) 3X Pressure rating 06 Secondary pressure up to 50 bar 50 Secondary pressure up to 100 bar 100 Secondary pressure up to 200 bar 200 Secondary pressure up to 315 bar 315 07 Internal pilot oil supply, external pilot oil return Y 08 Without check valve M Seal material 09 NBR seals no code FKM seals (other seals upon request) V Observe compatibility of seals with hydraulic fluid used. 10 Further details in the plain text * 1) H-key with material no. R900008158 is included in the scope of delivery. Technical data general Size 10 Weight kg 0.2 Installation position any Ambient temperature range NBR seals °C -30 … +80 FKM seals °C -20 … +80 hydraulic Size 10 Maximum operating pressure 1) Main port 2 (P) bar 315 Secondary pressure Main port 1 (A) bar 50 100 200 315 Maximum adm. counter pressure 1) Main port 3 (T) bar 315 Maximum flow l/min 100 Hydraulic fluid see table Hydraulic fluid temperature range NBR seals °C -30 … +80 FKM seals °C -20 … +80 Viscosity range mm²/s 10 … 800 Maximum admissible degree of contamination of the hydraulic fluid 2) Class 20/18/15 according to ISO 4406 (c) 1) Attention! The maximum operating pressure is added up from the set pressure and the return flow pressure. 2) The cleanliness classes specified for the components must be
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