Huade’s proportional relief valve DBE-1X is a pilot-operated relief valve driven by a proportional solenoid, used to limit system pressure. It can continuously set the system pressure to be limited based on the electrical input value, thereby achieving precise control of hydraulic system pressure. This proportional valve meets CE requirements, conforms to international standards, and is compatible with Rexroth’s products.
Proportional Pressure Relief Valve DBE-1X
TECHNICAL REPLACEMENT NOTICE
This Huade® directional control valve serves as a 100% direct drop-in replacement for Bosch Rexroth PROPORTIONAL-PRESSURE-RELIEF-VALVE-DBE-1X equivalents. Dimensions, mounting interfaces, and technical parameters are identical. Designed for cost reduction in industrial and mobile hydraulic systems.
• Product features: subplate mounting
• Specifications:Proportional Pressure Relief Valve DBE-1X series,
• Applications: construction machinery, metallurgical equipment, shipbuilding,
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Technical Data Sheet
- Product Overview
- Features & Applications
- Technical Parameters
Product Overview
Key Features
- Valve for limiting a system pressure
- Actuation via proportional solenoids
- For subplate mounting or sandwich plate design
- Valve and control electronics from a single source
- Types HD-DBEE and HD-ZDBEE with integrated control electronics
- Low example spread of the command value pressure characteristic curve
- Independently adjustable up and down ramps
Industrial Applications
- The DBE-1X proportional relief valve is widely used in various hydraulic systems that require precise pressure control, such as construction machinery, metallurgical equipment, shipbuilding, and other fields.
- Proportional pressure relief valves, types HD-DBE are actuated by means of a proportional solenoid. These valves are used to limit a system pressure. With these valves it is possible to steplessly adjust the system pressure, which is to be limited, in relation to the electrical command value.
- These valves basically consist of a proportional solenoid (1), the housing (2), the valve cartridge (3), the spool (4) and the pilot poppet (8). The proportional solenoid converts the electrical current proportionally into a mechanical force. An increase in current causes a corresponding rise in the solenoid force. The solenoid armature chamber is filled with hydraulic fluid and is pressure-balanced. The setting of the system pressure is carried out via the proportional solenoids(1) in relation to the command value. Pressure arising from the system in port P acts on the right hand side of the spool(4). At the same time the system pressure acts via the control line (6) which is fitted with an orifice (5) on the spring loaded side of the spool (4). Via a further rifice (7) the system pressure acts on the pilot poppet (8) against the force of the proportional solenoid (1). Once the system pressure has reached the pre-set value the pilot poppet (8) lifts from its seat. Depending on the model, pilot oil can now flow away externally via port A (Y) or internally into the tank, this has the effect of limiting the pressure on the spring loaded side of the spool (4). If the system pressure continues to rise slightly then the higher pressure on the right hand side of the spool pushes the spool to the left into control position P to T. At a minimum control current -corresponding to a command value of zero -the minimum settable pressure will be set.
- Structure of Proportional Pressure Relief Valve DBE-1X
- Symbol of Proportional Pressure Relief Valve DBE-1X
Technical Parameters
Mechanical ratings and operating limits for the Proportional Pressure Relief Valve DBE-1X:
| Parameter / Dimension Name | Value / Rating Specification |
|---|---|
| General | General |
| Installation | optional |
| Storage temperatue range (℃) | -20 to +80 |
| Ambient temperature range - DBE and ZDBE(℃) | -20 to+70 |
| Ambient temperature range - DBEE and ZDBEE(℃) | -20 to +50 |
| Weight - DBE and ZDBE (Kg) | 2.4 |
| Weight - DBEE and ZDBEE (Kg) | 2.5 |
| Hydraulic(measured at ʋ = 46 mm2/s and t= 40°C ±5℃ | Hydraulic(measured at ʋ = 46 mm2/s and t= 40°C ±5℃ |
| Max. operating pressure - Ports P:P1-P2: A1-A2:B1-B2 MPa | 31.5 |
| Max. operating pressure - Port T MPa | 5 |
| Max. settable pressure - Pressure stage 5 MPa | 5 |
| Max. settable pressure - Pressure stage 10 MPa | 10 |
| Max. settable pressure - Pressure stage 20 MPa | 20 |
| Max. settable pressure - Pressure stage 31.5 MPa | 31.5 |
| Min. settable pressure at signal value 0 MPa - see characteristic curves | see characteristic curves |
| Return pressure port A; with external pilot oil drain (Y) - separate and at zero pressure to tank | separate and at zero pressure to tank |
| Pilot oil flow L/min - 0.6to1.2 | 0.6to1.2 |
| Max. flow L/min - 30 | 30 |
| Pressure fluid - mineral oil(HL, HLP)to DIN 51 524 | mineral oil(HL, HLP)to DIN 51 524 |
| Pressure fluid temperature range - -20to+80 | -20to+80 |
| Viscosity range mm2/s - 15 to 380 | 15 to 380 |
