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{"title":"R901411433 4WRPEH10C4B100L-3X\/M\/24A1 German Rexroth hydraulic proportional valve","imgUrl":"https:\/\/img.chinax.com\/nimg\/68\/a4\/8c3461bc6f9bc81e09e96d98f2fa-200x200-1\/r901411433_4wrpeh10c4b100l_3x_2fm_2f24a1_german_rexroth_hydraulic_proportional_valve.jpg","attrs":{"Minimum Order Quantity":"1","Supply Ability":"100","Packaging Details":"wooden box","Ambient Temperature\u200b":"-20\u00b0C to +60\u00b0C"}}
Pilot-operated pressure relief valve with integrated solenoid unloading from Rexroth Germany. Designed for precise pressure control and system unloading in industrial hydraulic appliions.
Parameter
Value
Part Number
R900974700
Model
DBW 10 - A2 - 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
A2 = Rotary hand knob with protective cap (hand-adjustable, no tool needed)
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
Q1: What is the difference between DBW10A1 and DBW10A2?
Functionally identical. Only the adjustment method differs:
- A1 = hexagon socket setscrew (Allen key)
- A2 = rotary hand knob (turn by hand under cap, no tool)
Both share the same pressure stages, flow ratings, and solenoid specs.
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.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Total Annual:
1 million-10 millon
Employee Number:
>50
Ecer Certification：
Verified Supplier
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...
