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R900925192 DBW10B2-5X/350-6EG24N9K4 Rexroth electromagnetic overflow valve

China R900925192 DBW10B2-5X/350-6EG24N9K4 Rexroth electromagnetic overflow valve

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R900925192 DBW10B2-5X/350-6EG24N9K4 Rexroth electromagnetic overflow valve

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Viscosity Range	10–800 mm²/s
Certifiion	ISO
Solenoid Voltage	24 V DC (G24)
Packaging Details	wooden box
Supply Ability	100
Weight (approx.)	3.22 kg
Payment Terms	Western Union,T/T,D/P,D/A,L/C
Hydraulic Fluid	Mineral oil HL, HLP per DIN 51524; HFC (water-glycol); HLPD, HVLP, HVLPD
Seal Material	NBR (standard, for mineral oil HL/HLP, HFC)
Delivery Time	2 weeks
Brand Name	Rexroth
Place of Origin	Germany
Model Number	R900925192 DBW10B2-5X/350-6EG24N9K4

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Product Details
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Product Specification


Viscosity Range	10–800 mm²/s	Certifiion	ISO
Solenoid Voltage	24 V DC (G24)	Packaging Details	wooden box
Supply Ability	100	Weight (approx.)	3.22 kg
Payment Terms	Western Union,T/T,D/P,D/A,L/C	Hydraulic Fluid	Mineral oil HL, HLP per DIN 51524; HFC (water-glycol); HLPD, HVLP, HVLPD
Seal Material	NBR (standard, for mineral oil HL/HLP, HFC)	Delivery Time	2 weeks
Brand Name	Rexroth	Place of Origin	Germany
Model Number	R900925192 DBW10B2-5X/350-6EG24N9K4
High Light	Rexroth electromagnetic overflow valve ，DBW10B2-5X hydraulic valve ，Rexroth valve with warranty

R900925192 DBW10B2-5X/350-6EG24N9K4 Rexroth Electromagnetic Overflow Valve

High-performance pilot-operated pressure relief valve with integrated solenoid unloading functionality for industrial hydraulic systems.

Technical Specifiions

Part Number	R900925192
Model	DBW 10 - B2 - 5X / 350 - 6EG24N9K4
Valve Type	Pilot-operated pressure relief valve with integrated solenoid unloading (DBW series)
Nominal Size (NG)	10 – subplate mounting per ISO 6264 / NG10
Function	Pressure limiting at set value + solenoid-actuated system unloading (energize → P→T open, system near 0 bar)
Adjustment Type	B2 = Rotary hand knob with protective cap (hand-adjustable, no tool; B-version has different pilot damping orifice vs A-version)
Component Series	5X (series 50-59, dimensionally interchangeable)
Max. Adjustable Relief Pressure	350 bar (adjustment range typically 5-350 bar)
Max. Operating Pressure (P-port)	350 bar
Max. Flow Rate (Qmax)	approx. 250 L/min (Size 10 DB/DBW series)
Pilot Oil	Internal pilot supply, internal pilot drain (standard DBW)
Solenoid Type	Wet-pin DC solenoid
Solenoid Voltage	24 V DC (G24)
Electrical Connection	Plug-in socket per EN 175301-803 Form A (K4 = mating plug sold separately)
Manual Override	N9 = concealed push-button manual override on coil
Seal Material	NBR (standard, for mineral oil HL/HLP, HFC)
Hydraulic Fluid	Mineral oil HL, HLP per DIN 51524; HFC (water-glycol); HLPD, HVLP, HVLPD
Fluid Temperature Range	-30 °C to +80 °C (NBR seals)
Viscosity Range	10-800 mm²/s
Weight (approx.)	3.22 kg
Body Material	Cast iron / steel, zinc-plated

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Frequently Asked Questions

Q1: What is the difference between A-version and B-version (DBW10A2 vs DBW10B2)?

Both are pilot-operated relief valves with solenoid unload and identical pressure/flow/solenoid specs. The B-version has a different pilot damping orifice which changes dynamic response (pressure overshoot, settling time). A-version is the general-purpose default; B-version is selected when system-specific stability tuning is needed. Externally both A2 and B2 have the same rotary hand knob adjustment.

Q2: Is this direct-acting or pilot-operated?

It is a pilot-operated (two-stage) relief valve with solenoid unloading. A pilot stage controls the main spool for stable high-flow relief; the integrated solenoid can command the valve to dump system pressure to tank.

Q3: How do I adjust the relief pressure?

With system depressurized, lift/remove the protective cap and turn the rotary knob clockwise to increase, counterclockwise to decrease. Factory preset is typically near minimum of the spring range. Replace the cap after setting and verify with a pressure gauge. The solenoid does NOT alter the set pressure.

Q4: What is the solenoid logic?

Standard: Solenoid DE-energized = relief active at set pressure. Solenoid ENERGIZED = system unloaded (P connected to T, near tank pressure). Confirm this matches your control logic before wiring.

Q5: Which subplate and electrical connector are needed?

• Subplate: standard NG10 (ISO 6264) with P and T ports (G 1/2" or M18×1.5 on subplate), four M10 bolts @ ~35-40 N*m.
• Electrical: EN 175301-803 Form A (DIN 43650-A) 3-pin + PE connector, 24 V DC. If the plug has LED indiion, observe (+) / (-) polarity markings.

Q6: Common faults & causes?

• Solenoid clicks but system does NOT unload: pilot orifice clogged, main spool stuck, no coil current (check ~18-28 Ω), manual override jammed.
• Pressure won't reach set value / creeps early: wrong spring (not /350), pilot damping hole blocked, contaminated pilot seat, excessive T-backpressure (internal pilot drain).
• Coil overheats / burnt smell: overvoltage (>10% above 24V), wrong voltage coil fitted, or mechanical damage -- replace only with correct G24 wet-pin coil.
• Chatter / unstable: air in system, high T-backpressure, worn pilot seat -- bleed air first.

Q7: Does T-port backpressure affect set pressure?

Yes -- this model has internal pilot drain. Backpressure at T adds 1:1 to the relief setpoint. If your tank line has >5 bar sustained backpressure, consider the DBW…Y version (external pilot drain to separate tank line).

Q8: Fluid & seal compatibility?

NBR seals = mineral oil (HL/HLP) & HFC (water-glycol). For HEES/HETG biodegradable oils or HFD phosphate ester → specify FKM (Viton) seal variant. Maintain oil cleanliness per ISO 4406 code 18/16/13 or better.

Need the Rexroth DB/DBW series datasheet (RE 25802) or NG10 subplate machining dimensions? Just let me know.

Company Details

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Business Type:

Manufacturer,Exporter 
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Total Annual:

1 million-10 millon
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Employee Number:

>50 
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Ecer Certification：

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Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha... Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha...

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Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
Nan'an, Fujian Province, China
https://www.electrichydpump.com/

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