Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
| Supply Ability | 100 |
| Valve Type | Pilot-operated pressure relief valve with integrated solenoid unloading (DBW series) |
| Packaging Details | wooden box |
| Model | DBW 10 - A1 - 5X / 315 - 6EG24N9K4 |
| Payment Terms | Western Union,T/T,D/P,D/A,L/C |
| Max. Adjustable Relief Pressure | 315 bar (adjustment range typically 4–315 bar) |
| Delivery Time | 2 weeks |
| Part Number | R900965477 |
| Nominal Size (NG) | 10 — subplate mounting per ISO 6264 / NG10 |
| Certification | ISO |
| Place of Origin | Germany |
| Brand Name | Rexroth |
| Model Number | R900965477 DBW10A1-5X/315-6EG24N9K4 |
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Product Specification
| Supply Ability | 100 | Valve Type | Pilot-operated pressure relief valve with integrated solenoid unloading (DBW series) |
| Packaging Details | wooden box | Model | DBW 10 - A1 - 5X / 315 - 6EG24N9K4 |
| Payment Terms | Western Union,T/T,D/P,D/A,L/C | Max. Adjustable Relief Pressure | 315 bar (adjustment range typically 4–315 bar) |
| Delivery Time | 2 weeks | Part Number | R900965477 |
| Nominal Size (NG) | 10 — subplate mounting per ISO 6264 / NG10 | Certification | ISO |
| Place of Origin | Germany | Brand Name | Rexroth |
| Model Number | R900965477 DBW10A1-5X/315-6EG24N9K4 | ||
| High Light | Rexroth electromagnetic relief valve ，DBW10A1-5X hydraulic valve ，Rexroth Germany relief valve | ||
|
Parameter |
Value |
|---|---|
|
Part Number |
R900965477 |
|
Model |
DBW 10 - A1 - 5X / 315 - 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 solenoid → P→T open, system unloads to near 0 bar) |
|
Adjustment Type |
A1 = Hexagon socket with protective cap (Allen key adjustable) |
|
Component Series |
5X (series 50–59, dimensionally interchangeable within range) |
|
Max. Adjustable Relief Pressure |
315 bar (adjustment range typically 4–315 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.) |
3.15 kg |
|
Body Material |
Cast iron / steel, zinc-plated |
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Q1: What is the difference between DB10 and DBW10?
DB is a pilot relief valve only — limits system pressure. DBW adds an integrated directional solenoid valve: when energized the main stage is unloaded (P→T open, near 0 bar); when de-energized it works as a normal relief valve at the set pressure.
Q2: What does "A1" mean?
"A" = subplate mounting version (NG10). "1" = adjustment type = hexagon socket with protective cap (Allen key adjustable). This is the most common adjustment style for DB/DBW Size 10.
Q3: How do I adjust the relief pressure?
With system depressurized, remove the protective cap, turn the setscrew with an Allen key — clockwise to increase, counterclockwise to decrease. Factory preset is typically near minimum of the spring range. Reinstall the cap and verify with a pressure gauge. The solenoid does NOT alter the set pressure — it only enables/unloads.
Q4: What is the solenoid logic — energized = relief or unload?
Standard: Solenoid DE-energized = relief active at set pressure. Solenoid ENERGIZED = system unloaded (P connected to T, pressure drops to near tank pressure). Confirm this matches your application's 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 (K4 mating plug), 24 V DC. If the plug has an LED indicator, observe (+) / (–) polarity markings on the plug.
Q6: Common faults & causes?
Solenoid clicks but system does NOT unload: pilot orifice clogged, main spool stuck, no coil current (check ~18–28 Ω coil resistance), manual override jammed.
Pressure won't reach set value / creeps early: wrong spring grade (not /315), 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
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...
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