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Pressure Relief Valve Rexroth Interchangeable

Pressure Relief Valve DBD

MANUFACTURER Genuine Huade Hydraulic
STANDARDS ISO 4401 / DIN 24340
AVAILABILITY Factory Direct Stock
Pressure Relief Valve DBD
Pressure Relief Valve DBD - Image 2
Pressure Relief Valve DBD - Image 3
Pressure Relief Valve DBD - Image 4
TECHNICAL REPLACEMENT NOTICE

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

• Product features: Direct operated poppet valve, cartridge design, 3 pressure adjustment options
• Specifications: Size 6-30, operating pressure up to 63 MPa, flow rate 50-350 L/min
• Applications: Hydraulic system pressure limiting and control

Request B2B Quote

Submit your target quantity and technical questions. Our hydraulic engineering team will provide a factory-direct quote and lead time estimate within 24 hours.

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💬 WhatsApp: +86-18217786775
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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

Beijing Huade Hydraulic Industrial Group is a renowned state-owned company specializing in the the design, manufacturing, and service of hydraulic products and equipment. DBWT relief valve can replace the products offered by Rexroth®. The factory has passed ISO9001, ISO14001 and OH SAS18001. Huade Hydraulic has a good inspection system to ensure the high quality of hydraulic valves. The factory operates more than 750 pieces advanced production equipment imported from all over the world. Each pressure valve will be packed in waterproof plastic bags and standard cartons, with anti-counterfeiting marks attached. Huade® hydraulic products are widely used in the military industry to promote the modernization of defense equipment.

flow                                        (L/min)

Mineral oil (for NBR seal),or phosphate ester (for FPM seal)

Pressure fluid temperature range                  (℃)

Viscosity range                   (mm ²/s)

Key Features

  • As cartridge valve
  • For threaded connections
  • for subplate mounting
  • 3 pressure adjustment elements, optional:
  • ·Rotary knob
  • ·.Hex. head screw with protective cap
  • ·Lockable rotary knob with scale

Industrial Applications

  • The DBD pressure relief valves are direct operated poppet valves.
  • They are used to limit the pressure in a hydraulic system.
  • The valves mainly consist of sleeve (1), spring (2),poppet with damping spool (4) (pressure stages 2.5 to40 MPa) or ball(4) (pressure stage 63 MPa) and adjustment element (3). The setting of the system pressure is infinitely variable via the adjustment element (3). The spring (2) pushes the poppet (4) onto the seat. The P channel is connected to the system. The pressure present in the system is applied to the poppet area (or ball).
  • If the pressure in channel P rises above the valve set at the spring (2), the poppet (4) opens against the spring(2). Now pressure fluid flows form channel P into channel T. The stroke of the poppet (4) is limited by a pin.In order to maintain a good pressure settings over the entire pressure range the pressure range is split into 7 pressure stages.One pressure stage corresponds to a certain spring for a maximum operating pressure which may be set with it.
  • Structure and symbols of Pressure Relief Valve DBD
  • Symbols of DBD
  • The fluid must be filtered. Minimum filter fineness is 20 ㎛.
  • The tank must be sealing up and an air filter must be installed on air entrance.
  • Products without subplate when leaving factory, if need them, please ordering specially.
  • Valve fixing screws must be high intensity level (class 10.9). Please select and use,them according to the parameter listed in the sample book.
  • Roughness of surface linked with the valve is required surface roughness is 0.8.
  • Surface finish of mating piece is required to 0.01/100mm.

Technical Parameters

Mechanical ratings and operating limits for the Pressure Relief Valve DBD:

Parameter / Dimension Name Value / Rating Specification
Size - 6 - 8、10 - 15、20 25、30
Operating pressure        (MPa) - Port P - 40 - 63 31.5
Operating pressure        (MPa) - Port T - 31.5 31.5
flow                                        (L/min) - 50 - 120 - 250 350
Pressure fluid - Mineral oil (for NBR seal),or phosphate ester (for FPM seal) Mineral oil (for NBR seal),or phosphate ester (for FPM seal)
Pressure fluid temperature range                  (℃) - -30～+80 -30～+80
Viscosity range                   (mm ²/s) - 10～800 10～800

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