Rexroth DB Pilot Operated Relief Valve

Rexroth DB Pilot Operated Relief Valve

The Rexroth DB Pilot Operated Relief Valve is an essential component designed to ensure reliable pressure control in hydraulic systems. Engineered with precision, this valve maintains system pressure by diverting excess fluid flow, safeguarding equipment from potential overpressure damage. Its robust construction and high-quality materials guarantee long-term durability and consistent performance, even in demanding industrial environments.

Ideal for a wide range of applications, the Rexroth DB valve is easy to install and maintain, offering a cost-effective solution for enhancing the safety and efficiency of hydraulic systems. With its proven reliability, this valve is a trusted choice for professionals seeking optimal pressure regulation.

Rexroth DB Features

  • Mounting Compatibility: The valve is designed to mount on standard ISO 6264, NFPA/ANSI, and CETOP-RP 121 H interfaces, ensuring wide applicability and ease of installation in various systems.
  • Pressure Adjustment Options: The DB valve offers four different pressure adjustment elements, including a rotary knob, a sleeve with hexagon and protective cap, a lockable rotary knob with a scale, and a rotary knob with a scale, providing flexibility in pressure control.
  • High Pressure Handling: The valve can handle a maximum operating pressure of up to 350 bar (5076 PSI), making it suitable for high-pressure applications.
  • Threaded and Manifold Connections: It is available for both threaded connections and installation into manifolds, offering versatility in system integration.
  • Solenoid-Operated Unloading: The valve can be equipped with a solenoid-operated unloading feature via a built-on directional spool or poppet valve, which allows for automatic pressure relief control.
  • Versatile Pressure Stages: It supports five pressure stages, allowing users to set the relief pressure to 50, 100, 200, 315, or 350 bar, catering to different hydraulic system requirements.
  • Pilot Operated Design: The DB valve is a pilot-operated pressure relief valve, ensuring precise control over system pressure and enhancing the reliability of the hydraulic circuit.

Rexroth DB Specifications

SpecificationDetail
Valve TypeDB Pilot Operated Relief Valve
Nominal Sizes10 to 32
Maximum Operating Pressure350 bar (5076 PSI)
Maximum Flow Rate650 L/min (172 GPM)
Pressure Stages5 stages available: 50, 100, 200, 315, 350 bar (725, 1450, 2901, 4569, 5076 PSI)
Adjustment Elements4 types: Rotary knob, Sleeve with hexagon and protective cap, Lockable rotary knob with scale, Rotary knob with scale
Mounting OptionsStandard ISO 6264-06, 08, or 10, NFPA/ANSI R 06, R 08, R 10 interface, Porting pattern to DIN 24 340 form E
Operating Temperature Range-30°C to +80°C (-22°F to 176°F) for NBR seals; -15°C to +80°C (5°F to 176°F) for FKM seals
Hydraulic FluidMineral oil (HL, HLP) to DIN 51 524, Fast bio-degradable fluids, HETG, HEPG, HEES
Viscosity Range10 to 800 mm²/s (45 to 3720 SUS)
ISO Cleanliness CodeISO 4406 (C) class 20/18/15
Electrical ConnectionWithout plug-in connector, individual connection with component plug DIN EN 175 301-803
WeightVaries by size: DB10 – 2.6 kg (5.7 lbs), DB30 – 5.85 kg (12.9 lbs)

Rexroth 3WE6 Catalogue

ModelDB Pilot Operated Relief Valve PriceStock Status
DB10-1-5X/50$1399-1450Limited Stock
DB10-1-5X/100$1304-1367Limited Stock
DB10-1-5X/200$435-502Limited Stock
DB10-1-5X/315$401-475Limited Stock
DB10-1-5X/350$1100-1181Limited Stock
DB10-2-5X/50$427-466Limited Stock
DB10-2-5X/100$1078-1122Limited Stock
DB10-2-5X/200$681-758Limited Stock
DB10-2-5X/315$393-435Limited Stock
DB10-2-5X/350$782-791Limited Stock
DB20-1-5X/50$411-413Limited Stock
DB20-1-5X/100$332-398Limited Stock
DB20-1-5X/200$1028-1115Limited Stock
DB20-1-5X/315$623-663Limited Stock
DB20-1-5X/350$982-1018Limited Stock
DB20-2-5X/50$908-1005Limited Stock
DB20-2-5X/100$734-807Limited Stock
DB20-2-5X/200$1417-1467Limited Stock
DB20-2-5X/315$562-635Limited Stock
DB20-2-5X/350$794-834Limited Stock
DB30-1-5X/50$1031-1045Limited Stock
DB30-1-5X/100$457-543Limited Stock
DB30-1-5X/200$1371-1418Limited Stock
DB30-1-5X/315$1061-1151Limited Stock
DB30-1-5X/350$827-833Limited Stock
DB30-2-5X/50$1043-1082Limited Stock
DB30-2-5X/100$1315-1316Limited Stock
DB30-2-5X/200$1190-1286Limited Stock
DB30-2-5X/315$770-868Limited Stock
DB30-2-5X/350$673-719Limited Stock

For DB for sale and stock availability, please contact our business manager for pricing information.

DB Pilot Operated Relief Valve Manual PDF

The Rexroth DB Valve manual provides comprehensive guidance on the installation, operation, and maintenance of the Rexroth DB series pilot-operated relief valves. This essential document is designed to help users ensure optimal performance and longevity of their hydraulic systems. The manual covers detailed specifications, troubleshooting tips, and safety instructions, making it an indispensable resource for both engineers and technicians. Whether you’re looking to fine-tune system pressures or prevent potential issues, this manual offers the insights needed for effective and efficient operation. Download your free copy today to access all the essential information.

Rexroth DB Valve Manual PDF Free Download

Download

Rexroth DB Pilot Operated Relief Valve Applications

  • Industrial Hydraulic Systems: The Rexroth DB Pilot Operated Relief Valve is ideal for use in industrial hydraulic systems where precise pressure control is required. Its pilot-operated design ensures stable and accurate pressure regulation, making it suitable for various manufacturing processes.
  • Mobile Machinery: These valves are suitable for mobile machinery such as construction equipment, agricultural machines, and material handling vehicles. They provide reliable pressure relief in systems with high operating pressures, ensuring the safety and longevity of the hydraulic components.
  • Hydraulic Presses: In hydraulic presses, the DB Pilot Operated Relief Valve can be used to maintain consistent pressure during pressing operations, preventing damage to the press and the workpiece.
  • Injection Molding Machines: The valve is used in injection molding machines to control the pressure during the injection process, ensuring consistent product quality and preventing over-pressurization that could damage the mold.
  • Power Generation Plants: In power generation facilities, the DB Pilot Operated Relief Valve can be employed in hydraulic systems for turbine control and other high-pressure applications, ensuring safe operation and preventing system failures.
  • Marine and Offshore Applications: The valve’s robust construction and ability to handle high pressures make it suitable for marine and offshore applications, where it can be used in systems such as winches, steering gears, and deck machinery.
  • Machine Tool Industry: The valve is also used in the machine tool industry to regulate pressure in hydraulic systems that drive machine tools, ensuring precise operation and extending the life of the equipment.

Rexroth DB FAQ

The maximum operating pressure is 350 bar (5076 PSI).

The valve is compatible with mineral oil (HL, HLP) to DIN 51 524 and 51 525, fast biodegradable pressure fluids (HETG, HEPG, HEES), and other pressure fluids upon request.

The available adjustment elements include a rotary knob, a sleeve with a hexagon and protective cap, a lockable rotary knob with scale, and a rotary knob with scale.

The viscosity range is from 10 to 800 mm²/s (45 to 3720 SUS).
    • Yes, but it must be noted that the hydraulic back pressure in the return line (port T for internal pilot oil drain or port Y for external pilot oil drain) is added 1:1 to the response pressure set at the pilot control of the valve.

The maximum flow capacities are:

  • NS10: 250 L/min (66 GPM)
  • NS20: 500 L/min (132 GPM)
  • NS30: 650 L/min (171 GPM)

For NBR seals, the temperature range is -30 to +80°C (-22 to 176°F). For FKM seals, the range is -15 to +80°C (5 to 176°F).

Go to the full page to view and submit the form.