ZDR10DA1-40B／210YM, Stacked pressure reducing valve

ZDR10DA1-40B／210YM, Stacked pressure reducing valve

1、 Model meaning (paragraph by paragraph analysis)

• ZDRStacked direct acting pressure reducing valve

• 6/10：胖 taking the reinsurance of in perpetuity; of 06 （ 6 mm ） / by 10 （ 10 mm ）（ ISO 4401 ）

• D: Direct acting type

• AThe pressure reducing oil port isA→A1(A port decompression)

• 1Adjustment method=Knob type (lockable, with scale)

• 40B40 series, B-type seal (size unchanged)

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

• Y: Control oilinner supply

• M：Built in one-way valve (A1 → A reverse cutoff)

2、 Technical Parameters (Summary Table)

3、 Structure and Working Principle (A-Port Pressure Reduction+Unidirectional Cut off)

• structureDirect acting three-way,A → A1 pressure reduction, A1 → T overflow, built-in one-way valveCast iron valve body, alloy steel valve core, high-strength steel spring.

• Principle:

1. normal stateThe valve core is normally open,A → A1 free flow, one-way valve conducting；

2. Reduce pressure and stabilize voltageA1 pressure rises to the set value → valve core balance → decrease A → A1 opening → pressure drop increases →A1 stabilizes at the set pressure；

3. Overflow protectionA1 overpressure → valve core movement →A1 → T connection overflowLimit A1 to ≤ 21MPa;

4. Unidirectional cut-off：A1 → A Reverse Cut offTo prevent high-pressure backflow;

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

4、 Appearance and installation dimensions

• oil portP, T, A, B (A → A1 depressurization, T return oil)

• InstallFixed with 4 bolts (NG06: M5; NG10: M6)

• Dimensions (length x width x height)：

• ZDR6DA1: Approximately 70 × 40 × 45 mm

• ZDR10DA1: 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 knob lock,Clockwise voltage increase, counterclockwise voltage decrease；

• No load start, slowly increase the voltage to the targetLocking knob；

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

6、 Application scenarios

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

• A-port branch pressure reduction, stabilization, and reverse cutoff protection；

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

ZDR10DA1-40B／210YM, Stacked pressure reducing valve