Bosch Rexroth | DBW10B2-5X315Y6EW110N9K412
DBW10B2-5X/315Y6EW110N9K4/12
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The DBW10B2-5X/315Y6EW110N9K4/12 valve from Bosch Rexroth belongs to the DB Pressure Relief Valves series and limits system pressure in automated hydraulic circuits. With a nominal size of NG10, it matches standard port patterns for medium-flow manifolds. The unit can be adjusted up to 315 bar, giving designers a precise relief ceiling, while its maximum operating pressure of 350 bar keeps internal parts within their strength range. A normally open fail-safe state lets oil return to tank when the solenoid is de-energized, preventing unintended pressure buildup. Internal pilot supply with external return simplifies upstream plumbing yet allows the drain to reach a low-pressure line. A concealed manual override provides local actuation for service staff without exposing moving parts to dirt.
The valve passes up to 250 l/min on a subplate, supporting high-flow actuators without enlarging the manifold. Back pressure at ports Y and T is accepted to 160 bar, so remote drain circuits can share return lines. Reliable function is maintained with fluid viscosities from 10 to 800 mm²/s, and this wide span avoids swapping components when oil thickens during cold starts. Hydraulic fluid temperatures between –20 and 80 °C and ambient temperatures between –20 and 50 °C cover most mobile and industrial sites. Because installation can be in any position, designers can orient the cartridge to suit tight layouts without affecting performance.
Technical Specifications
Ambient Temperature Range (dbw)
–20 to +50 °C
Fail-safe State
Normally Open (B)
Hydraulic Fluid Temp Range
–20 to +80 °C
Installation Position
Any
Manual Override
Concealed (N9)
Max Flow (subplate Mounting)
250 l/min
Max Operating Pressure (p, X)
350 bar
Max Pressure Ports Y/t (6ew)
160 bar
Max Set Pressure
315 bar
Nominal Size
NG10
Pilot Oil Configuration
Internal Supply, External Return
Viscosity Range
10 to 800 mm²/s
1620 Old Apex Road
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