REXROTH

Bosch Rexroth DBW20A1-5X/315-6EG24N9K4 R900939736 is a pilot-operated pressure relief valve with integrated directional spool valve function, designed for pressure limitation and solenoid-controlled unloading in industrial hydraulic systems.

This valve belongs to the Bosch Rexroth DBW series and is designed in NG20 (Size 20) configuration. It is widely used in hydraulic systems requiring precise pressure control, overload protection, and reliable unloading functions under high pressure conditions up to 315 bar.

The valve consists of a main stage pressure relief valve combined with a pilot control valve and integrated directional spool valve. This structure allows both pressure limitation and electrically controlled unloading, improving system safety and energy efficiency in hydraulic circuits.

The model uses a 24V DC solenoid with 6EG configuration and N9 concealed manual override, allowing safe manual operation during maintenance or emergency situations. The K4 electrical connector ensures secure industrial wiring according to EN 175301-803 standards.

This DBW20 valve supports high flow capacity (up to approximately 500–650 L/min depending on system configuration) and is suitable for heavy-duty hydraulic systems requiring stable pressure regulation and reliable unloading performance.

Typical applications include hydraulic power units, industrial presses, steel processing equipment, machine tools, injection molding machines, and large-scale hydraulic automation systems where pressure stability and safety are critical.

The pilot-operated design ensures smooth pressure control behavior, reduced pressure spikes, and stable system operation even under fluctuating load conditions. It also supports shock-damped variants to reduce decompression noise and hydraulic impact.

Proper hydraulic oil cleanliness and filtration are required to maintain long service life, reduce wear on internal components, and ensure stable pressure regulation performance over time.

For compatible hydraulic components and system solutions, please visit the hydraulic valves category.

Technical support and quotation requests can be submitted through the contact page.

Official product reference: Bosch Rexroth official product page.

Conclusion: DBW20A1-5X/315-6EG24N9K4 R900939736 is a high-performance pilot-operated pressure relief valve designed for reliable pressure limitation, solenoid unloading control, and industrial hydraulic system protection.

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