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Pressure Relief Valve Rexroth Interchangeable

Pressure Relief Valve Z2DB 6

MANUFACTURER Genuine Huade Hydraulic
STANDARDS ISO 4401 / DIN 24340
AVAILABILITY Factory Direct Stock
Pressure Relief Valve Z2DB 6
Pressure Relief Valve Z2DB 6 - Image 2
Pressure Relief Valve Z2DB 6 - Image 3
Pressure Relief Valve Z2DB 6 - Image 4
Pressure Relief Valve Z2DB 6 - Image 5
TECHNICAL REPLACEMENT NOTICE

This Huade® directional control valve serves as a 100% direct drop-in replacement for Bosch Rexroth PRESSURE-RELIEF-VALVE-Z2DB-6 equivalents. Dimensions, mounting interfaces, and technical parameters are identical. Designed for cost reduction in industrial and mobile hydraulic systems.

• Product features: Pilot operated design, sandwich plate construction, 4 pressure ranges with multiple adjustment options
• Specifications: Operating pressure up to 31.5 MPa, flow capacity up to 60 L/min, mineral oil or phosphate ester compatible
• Applications: Military industry, industrial hydraulic systems requiring pressure limitation and system protection

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

Since its establishment in 1979, Huade Hydraulic has now grown to a considerable scale of production. Pressure relief valve Z2DB 6 has a relatively lower price compared with other international renowned brand. The factory pays more attention to practicality and cost-effectiveness. In order to provide cheaper products, the factory make full of domestic resources. At the same time, in order to ensure the quality, it has introduced more than 750 advanced production equipment from all over the world. The factory has passed ISO9001, ISO14001 and OH SAS18001. Compared with other similar hydraulic valves, Huade® pressure relief valves are more advanced in technology and more durable in this industry. They are widely used in the military industry due to reliable quality and stable performance.

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

Pressure fluid – temperature range  (℃)

Viscosity range               (mm/s)

Maximum permissible degree of contamination of the fluid is to NAS 1638, class 9.β₁₀≥75

Operating pressure,max.        (MPa)

Pressure adjustable, max. setting  (MPa)

Flow, max.                   (L/min)

Key Features

  • Sandwich plate valve
  • 4 pressure ranges
  • 5 circuit options
  • With one or two pressure relief cartridges
  • 4 adjustment elements.
  • ·Rotary knob
  • ·Sleeve with hexagon and protective cap
  • ·Lockable rotary knob with scale
  • ·Lockable rotary knob

Industrial Applications

  • The main function of pressure relief valve Z2DB 6 is to limit the pressure within a hydraulic system.
  • Pressure relief valve types ZDB and Z2DB are pilot operated and are of sandwich plate design.
  • They basically consist of the housing (7), together with one or two pressure relief valve cartridges.
  • The system pressure is set by means of adjustment element (4).
  • At rest, the valve is closed. Pressure in port A acts on the spool (1). At the same time pressure passes through orifice(2) on to the spring loaded side of spool (1) and via orifice (3) to the pilot poppet (6). If the pressure in port A rises above the value set on spring (5), the pilot poppet (6) opens. Fluid can now flow from the spring loaded side of spool(1), orifice (3), and channel (8) into port T. The resulting pressure drop then moves spool (1), causing this to open connection A to T, while the pressure set at spring (5) is maintained.
  • Pilot oil from the two spring chambers return externally to tank via port T.
  • Symbol of Z2DB 6
  • 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 Z2DB 6:

Parameter / Dimension Name Value / Rating Specification
Pressure fluid Mineral oil (for NBR seal),or phosphate ester (for FPM seal)
Pressure fluid - temperature range  (℃) -30～+80
Viscosity range               (mm/s) 10～800
Degree of fluid contamination Maximum permissible degree of contamination of the fluid is to NAS 1638, class 9.β₁₀≥75
Operating pressure,max.        (MPa) up to 31.5
Pressure adjustable, max. setting  (MPa) up to 5、 to 10、to 20、to 31.5
Flow, max.                   (L/min) up to 60
Weight - Type ZDB 6         (Kg) approx. 1
Weight - Type Z2DB 6        (Kg) approx. 1.2

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