Brand: Bosch Rexroth

Rexroth DB10G2-5X/50 Pressure Relief Valve

Name: Rexroth DB10G2-5X/50 Pressure Relief Valve – Datasheet
Brand: Bosch Rexroth

Description

Overview

The Bosch Rexroth DB10G2-5X/50 pressure relief valve is a pilot operated valve of size 10 with threaded connections, from the Rexroth DB.10-30 product family, identified by Rexroth order number R900599233. The original listing describes it as a complete pressure relief valve with set pressure up to 50 bar, and the official Bosch Rexroth store confirms the product as the pressure relief valve DB10G2-5X/50, size 10, with hydraulic actuation.

The DB10G2-5X/50 pressure relief valve protects hydraulic systems by limiting the system pressure to the set value: when the pressure at the valve inlet reaches the setting, the valve opens and relieves the excess flow, protecting pumps, actuators and other components from overpressure.

Engineering & Design

The DB10G2-5X/50 pressure relief valve is a pressure valve in poppet seat design, pilot operated, in which the main stage is controlled by the pilot stage through the system pressure itself. The valve is adjusted with an internal hexagon under a protective cap, and the pressure adjustment range of the DB10G2-5X/50 version is 4 to 50 bar, as confirmed by the official product data, with a maximum operating pressure of 350 bar for the family and a maximum flow of 250 L/min.

The valve has two ports with threaded connections (G1/2 per the original listing) and two switching positions, an ISO 6264-06-09 connection diagram, NBR seals, and is suitable for mineral oil hydraulic fluids (HL, HLP) and HFC fluids listed by the manufacturer. The net weight is 5.52 kg, and the electrical connection, where fitted, uses a 3-pole connector (2+PE) according to EN 175301-803.

Key Features

Pilot operated pressure relief valve, size 10, threaded connection
Poppet seat design with internal hexagon adjustment and protective cap
Pressure adjustment range 4-50 bar (DB10G2-5X/50)
Maximum operating pressure 350 bar, maximum flow 250 L/min
Rexroth order number R900599233
ISO 6264-06-09 connection diagram, NBR seals
Supplied complete per the original listing

Applications

The DB10G2-5X/50 pressure relief valve provides pressure limitation in hydraulic power units and systems
Protection of pumps, motors and actuators against overpressure
Hydraulic circuits with mineral oil and HFC fluids
Replacement valve for existing DB10G2 installations

Specifications

Manufacturer	Bosch Rexroth
Type	DB10G2-5X/50 pressure relief valve (pilot operated)
Order number	R900599233
Size	10 (NG10)
Connection	Threaded (G1/2 per original listing), 2 ports, 2 switching positions
Pressure adjustment range	4-50 bar
Max. operating pressure	350 bar
Max. flow	250 L/min
Seals / fluids	NBR; HL, HLP and HFC hydraulic fluids
Weight	5.52 kg

Compatibility & Integration

The DB10G2-5X/50 pressure relief valve installs directly into a hydraulic line or manifold with threaded connections and is set with the internal hexagon under the protective cap. The valve is part of the DB.10-30 family and follows the ISO 6264-06-09 connection diagram, so it can be fitted as a replacement for valves built to the same standard, after checking the pressure setting and flow requirements of the circuit.

Before installation, confirm the required set pressure, the system flow and the fluid compatibility against the valve rating. Our team can verify the valve and its configuration against your hydraulic circuit before dispatch.

Ordering Information

To order the Bosch Rexroth DB10G2-5X/50 pressure relief valve from Seven Star LLC, quote the order number and the required set pressure. We confirm availability and delivery to your site in Oman or anywhere in the GCC, and we verify the valve against your circuit requirements before dispatch.

Why Seven Star LLC

Seven Star LLC supplies hydraulic components and industrial spares to customers across Oman and the wider GCC region. Every Rexroth DB10G2-5X/50 pressure relief valve we supply is checked against the order number and specification before dispatch, and our team confirms the valve matches your circuit before you order.

How the DB10G2-5X/50 pressure relief valve works

The valve stays closed while the inlet pressure is below the setting. When the pressure reaches the setting, the pilot stage opens the main stage. The excess flow passes to the tank and the system pressure stays at the set value.

Where the DB10G2-5X/50 pressure relief valve is used

Hydraulic power units
Hydraulic systems
Pump outlet lines
Motor and actuator circuits
Pressure limitation points

Selection checklist for the DB10G2-5X/50 pressure relief valve

Set pressure
Adjustment range
Maximum flow
Port thread
Valve size
Seal material
Hydraulic fluid
Mounting position

Installation, commissioning and maintenance notes for the DB10G2-5X/50 pressure relief valve

Fit the valve in the line with the threaded ports connected to the circuit and the tank. Set the pressure with the internal hexagon under the protective cap and lock the setting. Check the setting and the seals at regular intervals.

Requesting a quotation for the DB10G2-5X/50 pressure relief valve

Please send the set pressure, the flow and the fluid. Seven Star LLC serves industrial customers in Oman and the GCC and replies with a quotation based on the information provided.

DB10G2-5X/50 valve type

It is a pilot operated pressure relief valve.

DB10G2-5X/50 maker

It is made by Bosch Rexroth.

DB10G2-5X/50 family

It belongs to the Rexroth DB.10-30 product family.

DB10G2-5X/50 order number

The Rexroth order number is R900599233.

DB10G2-5X/50 size

It is a size 10 valve.

DB10G2-5X/50 connection

It has threaded connections.

DB10G2-5X/50 ports

It has two ports, G1/2 per the original listing.

DB10G2-5X/50 switching positions

It has two switching positions.

DB10G2-5X/50 actuation

The actuation is hydraulic.

DB10G2-5X/50 function

It limits the system pressure to the set value.

DB10G2-5X/50 protection

It protects pumps, actuators and other components from overpressure.

DB10G2-5X/50 poppet seat

It has a poppet seat design.

DB10G2-5X/50 pilot control

The pilot stage controls the main stage through the system pressure itself.

DB10G2-5X/50 adjustment

It is adjusted with an internal hexagon.

DB10G2-5X/50 protective cap

A protective cap covers the adjustment.

DB10G2-5X/50 pressure range

The adjustment range is 4 to 50 bar.

DB10G2-5X/50 maximum flow

The maximum flow is 250 L/min.

DB10G2-5X/50 seals

The seals are NBR.

DB10G2-5X/50 fluids

It suits mineral oil hydraulic fluids HL and HLP.

DB10G2-5X/50 HFC fluids

It also suits HFC fluids listed by the manufacturer.

DB10G2-5X/50 weight

The net weight is 5.52 kg.

DB10G2-5X/50 supply scope

It is supplied as a complete valve per the original listing.

DB10G2-5X/50 documentation

Manufacturer documentation is supplied with a quotation.

Valve records for the DB10G2-5X/50 pressure relief valve

Record the set pressure, the seal check and the date of each inspection.

Choosing the right DB10G2-5X/50 pressure relief valve setting

Choose the valve from the pressure the circuit needs and the flow it must pass.

Datasheets & Documents

Datasheet Bosch Rexroth Rexroth DB10G2-5X/50 Pressure Relief Valve Datasheet Download

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About brand

Bosch Rexroth is a German supplier of drive and control technology, part of the Bosch Group since 2001. Its history goes back to 1795, when Georg Ludwig Rexroth started a water-driven forge in the Spessart hills; the family moved the business to Lohr am Main in 1850, where Bosch Rexroth AG is still headquartered. Rexroth moved into hydraulics in the 1950s and joined Mannesmann in 1975.

Seven Star LLC sources and supplies Bosch Rexroth hydraulic pumps, pressure relief valves and filter elements for industrial users in Oman, identified by Rexroth type code and material number.

Bosch Rexroth company profile

Founded	1795, Spessart, Germany, by Georg Ludwig Rexroth
Headquarters	Lohr am Main, Bavaria, Germany, since 1850
Ownership	Robert Bosch GmbH (Bosch Group), since 2001
Formed as Bosch Rexroth	2001, by merging Mannesmann Rexroth with Bosch Automationstechnik
Product families	Axial piston pumps and motors (A10VSO, A4VSO), directional and proportional valves, hydraulic power units, industrial hydraulics cylinders, IndraDrive and ctrlX AUTOMATION drives and controls, linear motion technology

Milestones

1795: Georg Ludwig Rexroth starts a water-driven forge.
1850: The Rexroth family moves the business to Lohr am Main.
1954: Rexroth's hydraulics breakthrough at the Hannover Messe.
1975: Rexroth becomes part of Mannesmann AG.
2001: Mannesmann Rexroth and Bosch Automationstechnik merge into Bosch Rexroth.

Bosch Rexroth hydraulic components listed here

Listed items include the A10VSO, an axial piston variable displacement pump of swashplate design for open circuits. The DB10G2-5X/50 is a pilot-operated pressure relief valve, and the MHDBD10K2-1X/315V is a direct-operated relief valve in cartridge form. R928006678 is a hydraulic filter element. Older parts may be marked Mannesmann Rexroth; the type codes are read the same way.

Bosch Rexroth products we list

Family	Examples
Hydraulic Valves & Components	4WE6 Direct-Operated Directional Spool V…, 4WEH Pilot-Operated Directional Spool Va…, DBW Pilot-Operated Pressure Relief Valve
Pumps	A10VSO Axial Piston Variable Pump, A2FO Axial Piston Fixed Pump, A4VSO Axial Piston Variable Pump
Safety Relief Valves	MHDBD10K2-1X/315V Pressure Relief Valve, Rexroth DB10G2-5X/50 Pressure Relief Valve
Solenoid Valves	R901278781 4WE10F5X/EG24N9K4/M Direction…
Filtration Elements	R928006678 Hydraulic Filter Element

Ordering Rexroth parts: what we need

The safest reference is the ten-digit material number beginning with R9, printed on the nameplate beside the type code. Send both, with a nameplate photo. For an A10VSO pump, the full code matters: size, controller type, series, direction of rotation, seals, shaft and port plate. For relief valves, give size, pressure stage and seal material. For filter elements, the material number or the complete element code is enough. We supply to buyers across the GCC.

Facts checked against Bosch Rexroth's own history page and its 225-year anniversary release, October 2026.

Browse Bosch Rexroth products by category: Safety Relief Valves, Filtration Elements, Pumps.

FAQ

Questions about the Rexroth DB10G2-5X/50 Pressure Relief Valve

Answers from our engineering team on installation, compatibility and integration.

01What is the Bosch Rexroth DB10G2-5X/50?

The DB10G2-5X/50 pressure relief valve is a pilot operated valve of size 10 with threaded connections, Rexroth order number R900599233, used to limit pressure in hydraulic systems.

02What is the pressure setting range of this valve?

The pressure adjustment range of the DB10G2-5X/50 is 4 to 50 bar, with a maximum operating pressure of 350 bar and maximum flow of 250 L/min per the official product data.

03What type of connection does the DB10G2 use?

The valve has a threaded connection with two ports (G1/2 per the original listing), two switching positions and an ISO 6264-06-09 connection diagram.

04Which hydraulic fluids can be used?

The valve is suitable for mineral oil hydraulic fluids (HL, HLP) and the HFC fluids listed by the manufacturer, with NBR seals.

05Is this valve supplied complete?

Yes, the original listing describes it as a complete pressure relief valve, ready for installation in the hydraulic circuit.