DBE(M) Pilot-Operated Proportional Relief Valve

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Product details

DBE(M) Pilot‑Operated Proportional Relief Valve

Product Overview

DBE(M) Pilot‑Operated Proportional Relief Valve is a high‑capacity pilot‑operated Hydraulic valve, serving as the key pressure‑limiting component for the hydraulic system of industrial Machine. It realizes stepless adjustable system pressure by electrical control signals. The DBE is standard version, while DBM is with built‑in on‑board electronics (OBE). It protects the whole hydraulic system from over‑pressure damage, and can achieve pressure setting, pressure switching and remote pressure control for the Machine. It adopts subplate mounting structure, suitable for medium‑to‑high‑flow hydraulic circuits.

Technical Specifications

- Model: DBE (external amplifier), DBM (integrated OBE amplifier)

- Type: Pilot‑operated proportional relief Hydraulic valve

- Mounting: Subplate mounting

- Max working pressure: 31.5 MPa

- Adjustable pressure range: Multiple optional ranges (0‑10 MPa / 0‑20 MPa / 0‑31.5 MPa)

- Power supply: DC24V

- Control signal: 0‑10 V / 4‑20 mA

- Maximum flow: Up to 120 L/min

- Working medium: Anti‑wear hydraulic oil

- Operating temperature: ‑20℃ ~ +80℃

- Structure: Two‑stage pilot operated, proportional solenoid control

Working Principle

The control signal is sent to the proportional solenoid of this Hydraulic valve. The solenoid generates electromagnetic force to set the pilot pressure of the pilot stage. When the main‑circuit pressure of the hydraulic system rises above the preset value, the main valve spool opens, and excess hydraulic oil flows back to the oil tank. It keeps the working pressure of the Machine stable at the target value. Changing the input electrical signal can continuously adjust the relief pressure. DBM model with integrated OBE simplifies wiring and signal processing.

Core Advantages

1. Pilot‑operated two‑stage structure, large flow capacity, reliable over‑pressure protection for heavy‑load hydraulic system.

2. Stepless proportional pressure adjustment, good linearity and low hysteresis for stable pressure control of the Machine.

3. DBE for external amplifier; DBM with built‑in OBE electronics, flexible for different control cabinet layouts.

4. Compact subplate mounting, easy installation and maintenance of the Hydraulic valve.

5. Effective pressure limiting and remote pressure control, avoid equipment damage caused by overload pressure.

Application Range

This Hydraulic valve is widely applied in the hydraulic system of industrial Machine, including hydraulic presses, injection molding machines, test benches, hydraulic power units, forging equipment and heavy‑duty automation machinery. It is used for system pressure limiting, remote pressure setting and multi‑stage pressure switching.

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