ZDR6DP2-4X／210YM， Stacked pressure reducing valve

ZDR6DP2-4X／210YM， Stacked pressure reducing valve

1、 Model analysis (meaning by digit)

• ZDRStacked direct acting pressure reducing valve

• 6/10： refractory campaigner झील, प्षिout; of 06 (6 mm) / of 10 (10 mm) （ ISO 4401 ）

• D: Direct acting type

• P: Pressure reducing oil portP→P1(Oil in → depressurized oil out)

• 2Adjustment method=Inner hexagon+protective cover (non lockable)

• 4X40 series, unchanged installation size

• 210：Maximum regulated pressure of 21MPa (210bar)

• Y: Control oilinner supply

• M：Equipped with one-way valve (reverse shut-off)

2、 Technical Parameters (Summary Table)

3、 Structure and Working Principle

• structureDirect acting three-way structure,P → P1 pressure reduction, P1 → T overflow protection, built-in one-way valveCast iron valve body, alloy steel valve core, high-strength steel spring.
• Principle (three-way pressure reduction+overflow+one-way cutoff)：

1. normal stateThe valve core is normally open,P → P1 free flow, one-way valve conducting；

2. Reduce pressure and stabilize voltageP1 pressure rises to the set value → valve core force balance → reduce P → P1 opening → pressure drop increases →P1 stabilizes at the set pressure；

3. Overflow protectionP1 overpressure → valve core continues to move →P1 → T Connect overflowLimit P1 pressure to ≤ 21MPa;

4. Unidirectional cut-off：P1 → P reverse cutoffTo prevent backflow on the high-pressure side;

5. DrainLeakage of oil in the spring chamberT-port leakageTo avoid back pressure affecting the accuracy of pressure regulation.

4、 Appearance and installation dimensions (stacked)

• oil portP (oil inlet), P1 (pressure reducing oil outlet), T (return oil), A, B (port)

• Install：4 个螺栓固定 （NG06：M5；NG10：M6）

• Dimensions (length x width x height)：

• ZDR6DP2: approximately 70 × 40 × 45 mm

• ZDR10DP2: approximately 85 × 50 × 55 mm

5、 Key points for installation and debugging

1. Installation directionFrom any angle,T-port connected to fuel tank separately (back pressure ≤ 0.5MPa)；

2. Stacking orderBottom plate → pressure reducing valve → directional valve → cover plate;

3. Pressure regulation steps：

• Release the protective cover,Clockwise voltage increase, counterclockwise voltage decrease；

• The system starts without load and slowly boosts the voltage to the target valueLocking protective cover；

4. Key Attention：Excessive back pressure at the T-port can lead to inaccurate pressure regulation and pressure drift.

6、 Application scenarios

• Hydraulic stations, injection molding machines, machine tools, construction machinery, die-casting machines;

• Branch high voltage decompression, stabilization, and reverse cutoff protection；

• andZDB stacked overflow valve, PVT hydraulic control one-way valvecoordination:Reduce pressure+maintain pressure+overload protection.

ZDR6DP2-4X／210YM， Stacked pressure reducing valve