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Proportional Pressure Valve Rexroth Interchangeable

Proportional Pressure Relief Valve DBEM

MANUFACTURER Genuine Huade Hydraulic
STANDARDS ISO 4401 / DIN 24340
AVAILABILITY Factory Direct Stock
Proportional Pressure Relief Valve DBEM
Proportional Pressure Relief Valve DBEM - Image 2
Proportional Pressure Relief Valve DBEM - Image 3
TECHNICAL REPLACEMENT NOTICE

This Huade® directional control valve serves as a 100% direct drop-in replacement for Bosch Rexroth PROPORTIONAL-PRESSURE-RELIEF-VALVE-DBEM equivalents. Dimensions, mounting interfaces, and technical parameters are identical. Designed for cost reduction in industrial and mobile hydraulic systems.

• Product features:one source
• Specifications:Proportional Pressure Relief Valve DBEM series,
• Applications:hydraulic systems

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100% Genuine Huade Direct factory authorized supply
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ISO 4401 Mounting ISO 4401 / Rexroth interchangeable
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Secure Packaging Sealed rust-proof global shipping

Technical Data Sheet

  • Product Overview
  • Features & Applications
  • Technical Parameters

Product Overview

Proportional Pressure Relief Valve DBEM 

The pilot-operated proportional relief valve DBEM is a pilot-operated relief valve equipped with an integrated electronic component (OBE). It is primarily used to limit the working pressure of hydraulic systems and provide stepless adjustment of system pressure through electrical control signals. This proportional valve features precise control characteristics, stable pressure, and good dynamic response, making it widely used in various hydraulic systems that require precise pressure control. 

Key Features

  • For subplate mounting
  • Encased in block
  • Optional additional maximum pressure limitation by means of a spring loaded pilot control valve
  • Valve and electronic control form one source

Industrial Applications

  • The pilot-operated proportional relief valve DBEM is widely used in various hydraulic systems that require precise pressure control, such as injection molding machines, die-casting machines, and hydraulic presses. In these applications, the DBEM valve ensures stable operation of the hydraulic system and improves production efficiency.
  • These valves basically consist of the pilot control valve (1) with proportional solenoid (2) and the main valve (3) with main spool insert (4).
  • Type DBE:
  • The adjustment of the pressure is command value dependent via a proportional solenoid (2). The pressure present in port A acts on the underside of the main spool (4). At the same time this pressure acts on the spring loaded side of the main spool (4) via orificies (5). The hydraulic force acts on the pilot poppet (6). When the hydraulic force over comes the solenoid force then the pilot poppet (6) opens. Due to the fact that the pilot oil can now flow to tank via port Y, a pressure drop occurs at the main spool (4) which acts on the main spool and lifts it against the force of the return spring . The connection from A to B is opened and there is no longer any increase in pressure
  • Type DBEM:
  • Optionally the valve can be supplied with an additional spring loaded pilot control valve for maximum pressure safety (redundant pressure safety)
  • Structure of Proportional Pressure Relief Valve DBEM

Technical Parameters

Mechanical ratings and operating limits for the Proportional Pressure Relief Valve DBEM:

Parameter / Dimension Name Value / Rating Specification
Hydraulic data Hydraulic data
Max.operating pressure Ports A. B and X (MPa) - 31.5 31.5
Return pressure (MPa) - Port Y, separate and at zero pressure to tank Port Y, separate and at zero pressure to tank
Max. settable pressure (MPa) - 5. 10. 20. 31.5 same as pressure stage 5. 10. 20. 31.5 same as pressure stage
Min. settable pressure (MPa) - see characteristic curves see characteristic curves
Max. pressure safety (MPa) - settable pressure settable pressure
Max. pressure safety (MPa) - 5 - 10 - 20 31.5
Max. pressure safety (MPa) - 1to 62 - 1to 122 - 1 to 222 1to 342
Pilot flow (L/min) - 0.7 to 2 0.7 to 2
Linearity (%) - ±3.5 ±3.5
Repeatability (%) - <±2 <±2
Typical variation (%) - < ±2 Max. pressure < ±2 Max. pressure
Hysteresis (%) - With surge ± 1.5 of Max.pressure.Without surge ± 4.5 of Max.pressure With surge ± 1.5 of Max.pressure.Without surge ± 4.5 of Max.pressure
Switching time - 30 to 150 30 to 150
Pressure fluid - Mineral oil(for NBR seal), Phosphate ester (for FPM seal) Mineral oil(for NBR seal), Phosphate ester (for FPM seal)
Viscosity range (mm2/s) - 2.8 to 380 2.8 to 380
Pressure fluid temperature range(℃) - -20 to+70 -20 to+70
Degree of contamination(μm) - ≤20(recommendation 10) ≤20(recommendation 10)

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