BOSCH REXROTH ZDR 10 DB2-54/75YM R900431509

Rexroth Pilot Operated Pressure Reducing Valve ZDR 10 DB2-54/75YM

Description

This is a used but fully functional ZDR 10 DB2-54/75YM pilot operated pressure reducing valve manufactured by Bosch Rexroth. It is a 3-way version designed for precise pressure control in hydraulic systems. Its subplate mounting design according to ISO 4401 standards ensures easy integration and maintenance. Ideal as a spare part for existing machinery or for new applications requiring proven Rexroth quality.

Specifications

• Manufacturer: Bosch Rexroth
• Type: ZDR 10 DB2-54/75YM
• Part Number (MNR): R900431509
• Component series: 5X
• Size: 10 (NG10)
• Porting pattern: ISO 4401-05-04-0-05
• Maximum operating pressure: 315 bar
• Pressure adjustment up to: 75 bar
• Adjustment type: Rotary knob

Label Info

• Model: ZDR 10 DB2-54/75YM
• MNR: 00431509 (Short for R900431509)
• Production Code: A221-276

Application

This valve is commonly used in industrial hydraulic circuits to reduce system pressure for a secondary circuit. Applications include machine tools, presses, plastic injection molding machines, and general industrial power units.

Country of Origin

Germany

CO2 Impact

Reusing this industrial part saves approximately 10.0 kg of CO2 compared to manufacturing a new one. This is equivalent to the CO2 absorption of a mature tree over a year.

Availability

This is an obsolete item but available from our stock. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the function of the ‘YM’ suffix in the model number ZDR 10 DB2-54/75YM?

The ‘YM’ suffix in Rexroth valve designations typically indicates the presence of a leakage-free poppet valve in the pilot stage, which improves the valve’s performance and stability, especially at low pressure settings.

What is the recommended hydraulic fluid and filtration level for this valve?

This valve is designed for use with mineral oil (HL, HLP) according to DIN 51524. To ensure a long service life and reliable operation, a fluid cleanliness class of at least 20/18/15 according to ISO 4406 is recommended.

How do I adjust the pressure setting on this valve?

The pressure setting is adjusted via the adjustment element, which is the rotary knob or hexagon screw located at the end of the pilot valve. Turning it clockwise increases the pressure, and counter-clockwise decreases it. Always consult the datasheet and depressurize the system before making adjustments.

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Last Update: March 13, 2026