DA20 Pilot Operated Unloading Valve
9 month agoInstallation position | Optional | ||
Diameter | 10 | 25 | 32 |
DA Series Weight(kg) | 2.6 | 6.6 | 12.3 |
Max/Working pressure Port A (Mpa) | Up to 31.5 | ||
Max Flow used for 10% (L/min) | 40 | 80 | 120 |
Max Flow used for 17% (L/min) | 60 | 120 | 240 |
Fluid of oil | Mineral oil(HL, HLP) DIN51 521, Phosphate Ester(HFD-R) | ||
Temp Range of Oil (℃) | -30~+80(Used for butyl rubber sealing ring), -20~+80 (For fluoro rubber seal ring) | ||
Viscosity Range (m㎡/s) | 10~800 |
- Mounting Type: Bottom plate installation for easy integration into existing hydraulic setups.
- Control Elements: Available with a knob, an adjustment bolt with protective cover, a lockable knob with scale, and a knob with scale for precise control.
- Pressure Ranges: Four different pressure ranges to suit a variety of applications.
- Sizes: Offered in sizes from 10 to 32, accommodating a wide range of flow requirements.
- Pressure Rating: Capable of withstanding pressures up to 31.5Mpa for demanding high-pressure applications.
- Flow Capacity: Designed to handle flow rates up to 600L/min, ensuring efficient operation even under heavy loads.
- Functions: Effective for charging accumulators or enabling low-pressure pump unloading in high/low pressure pump systems.
- Installation Tips: (1) Minimize the connection resistance between the DA valve and the accumulator. (2) For large pump flows or low pressure differentials (10%), the Y-type connection is recommended.
- Customization: Multiple control elements allow for tailored operation to fit specific needs.
- Reliability: Engineered to withstand high pressures and deliver consistent performance.
- Efficiency: High flow capacity ensures optimal performance under various load conditions.
- Safety: Lockable control elements prevent unauthorized adjustments.
- Versatility: Suitable for a wide range of hydraulic system configurations and applications.







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