DBETFX-1X/80G24-27HZ4M Rexroth Proportional Relief Valve

Product Overview:

The DBETFX-1X/80G24-27HZ4M is a premium direct-operated proportional pressure relief valve equipped with LVDT linear position feedback [cite: 1.1.3]. As leading experts in industrial B2B hydraulic solutions, we meticulously engineered this valve to offer 100% footprint and performance interchangeability with the original Bosch Rexroth DBET series (including DBETFX, DBETX, DBETE). Utilizing a high-grade poppet design combined with the closed-loop accuracy of an inductive position transducer, this model delivers unmatched precision in system pressure limitation [cite: 1.1.3]. Moreover, every single valve undergoes a stringent 100% simulated working condition test on our hydraulic test benches prior to delivery, guaranteeing excellent pressure responsiveness and minimal hysteresis. Integrating our valve into your machinery will significantly slash your maintenance costs while establishing an unshakeable hydraulic foundation.

Technical Specifications (Bulleted List):

• Model Number: DBETFX-1X/80G24-27HZ4M

• Brand Compatibility: 100% Interchangeable with Bosch Rexroth

• Mounting Standard: NG6 / CETOP 3 (ISO 4401-03-02-0-94) [cite: 1.1.3]

• Valve Type: Direct-operated proportional relief valve with LVDT position feedback (Poppet design) [cite: 1.1.3]

• Max Set Pressure: 80 bar (measured at nominal flow of 1 L/min) [cite: 1.1.3]

• Max Working Pressure: 315 bar (Port P), 200 bar (Port T) [cite: 1.1.3]

• Nominal Flow Rate: 1 L/min [cite: 1.1.3]

• Control Type: Proportional solenoid with position control (requires external trigger amplifier) [cite: 1.1.3]

• Supply Voltage: 24V DC (G24) [cite: 1.1.3]

• Electrical Connection: Z4M plug connector [cite: 1.2.2]

• Hysteresis: ≤ 1% [cite: 1.1.3]

• Fluid Temperature Range: -20°C to +80°C [cite: 1.1.3]

• Net Weight: Approx. 2.5 kg [cite: 1.2.3]

Key Technical Advantages:

• Absolute Drop-in Interchangeability: Manufactured strictly adhering to the Rexroth 1X series dimensional tolerances and porting patterns [cite: 1.1.3]. Users can seamlessly swap out damaged OEM valves directly on the existing subplate without retrofitting any piping, drastically minimizing critical machine downtime.

• Extreme Precision via LVDT Closed-Loop Feedback: Unlike standard proportional valves, the DBETFX series integrates an LVDT inductive position transducer [cite: 1.1.3]. By internally feeding back the absolute mechanical stroke of the poppet spool, it neutralizes friction and flow force disturbances, achieving an ultra-low hysteresis of ≤ 1% and superior control repeatability [cite: 1.1.3].

• 100% Rigorous Simulated Condition Testing: We do not rely on random batch sampling. Each unit is individually mounted onto a dedicated high-pressure test bench. Here, it is subjected to hot oil circulation, fatigue impacts, and pressure-holding tests up to 315 bar, ensuring absolute seating capability and zero abnormal internal leakage.

• Aerospace-Grade Hardening & Extended Lifespan: The core poppet valve is precision-machined from high-strength carburized steel with micron-level grinding. The proportional solenoid coil provides excellent heat dissipation and electromagnetic immunity, guaranteeing reliable operation without premature wear during 24/7 high-frequency pressure modulations.

Application Areas:

• Pilot precision pressure regulation in servo-hydraulic test stands and material fatigue testing rigs.

• High-sensitivity hydraulic systems in aerospace manufacturing and defense equipment.

• Closed-loop micro-clamping force control in high-end plastic injection molding and die-casting machines.

• Constant pressure maintenance circuits in heavy metallurgical machinery and forging presses.

Expert Maintenance Tips:

• Strictly Control Fluid Contamination: Proportional poppet valves equipped with LVDT are extremely sensitive to solid particles. To prevent spool jamming, the system fluid cleanliness must be strictly maintained at ISO 4406 Class 18/16/13 or better [cite: 1.1.3]. Installing a 10 μm high-pressure inline filter element is highly recommended.

• External Amplifier Calibration: Since this model requires an external trigger amplifier (no onboard electronics), please ensure the external proportional amplifier is correctly tuned before startup [cite: 1.1.3]. Adjust the “zero adjustment” and “sensitivity adjustment” parameters properly in alignment with the 24V coil resistance and LVDT AC feedback signals to prevent pressure curve distortion [cite: 1.1.3].

• Initial Startup Air Bleeding: Air entrapped during initial installation or oil changes often causes abnormal high-frequency whistling or system judder. Operate the hydraulic system at very low pressure and gently loosen the bleed screw at the rear of the proportional solenoid. Once clear hydraulic fluid flows out without any air bubbles, securely tighten the screw.