Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
| Weight (approx.) | 7.8 kg |
| Supply Ability | 100 |
| Viscosity Range | 10–800 mm²/s |
| Seal Material | NBR (standard, for mineral oil HL/HLP, HFC) |
| Delivery Time | 2 weeks |
| Packaging Details | wooden box |
| Body Material | Cast iron / steel, zinc-plated |
| Fluid Temperature Range | -30 °C to +80 °C (NBR seals) |
| Payment Terms | Western Union,T/T,D/P,D/A,L/C |
| Certification | ISO |
| Place of Origin | Germany |
| Brand Name | Rexroth |
| Model Number | R900941175 DBW20A1-5X/200-6EG24N9K4 |
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Product Specification
| Weight (approx.) | 7.8 kg | Supply Ability | 100 |
| Viscosity Range | 10–800 mm²/s | Seal Material | NBR (standard, for mineral oil HL/HLP, HFC) |
| Delivery Time | 2 weeks | Packaging Details | wooden box |
| Body Material | Cast iron / steel, zinc-plated | Fluid Temperature Range | -30 °C to +80 °C (NBR seals) |
| Payment Terms | Western Union,T/T,D/P,D/A,L/C | Certification | ISO |
| Place of Origin | Germany | Brand Name | Rexroth |
| Model Number | R900941175 DBW20A1-5X/200-6EG24N9K4 | ||
| High Light | Rexroth electromagnetic relief valve ，DBW20A1-5X hydraulic valve ，Rexroth valve with warranty | ||
Rexroth DBW series pilot-operated pressure relief valve with integrated solenoid unloading function. This electromagnetic relief valve provides pressure limiting at set value plus solenoid-actuated system unloading capability.
| Parameter | Value |
|---|---|
| Part Number | R900941175 |
| Model | DBW 20 - A1 - 5X / 200 - 6EG24N9K4 |
| Valve Type | Pilot-operated pressure relief valve with integrated solenoid unloading (DBW series) |
| Nominal Size (NG) | 20 - subplate mounting per ISO 6264 / NG20 |
| Function | Pressure limiting at set value + solenoid-actuated system unloading (energize → P→T open, system near 0 bar) |
| Adjustment Type | A1 = Hexagon socket setscrew with protective cap (Allen key adjustable) |
| Component Series | 5X (series 50-59, dimensionally interchangeable) |
| Max. Adjustable Relief Pressure | 200 bar (adjustment range typically 4-200 bar) |
| Max. Operating Pressure (P-port) | 350 bar |
| Max. Flow Rate (Qmax) | approx. 500 L/min (Size 20 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.) | 7.8 kg |
| Body Material | Cast iron / steel, zinc-plated |
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. This is the DBW (unloading) version.
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 cap and verify with a pressure gauge. The solenoid does NOT change the set pressure.
Standard: Solenoid DE-energized = relief active at set pressure. Solenoid ENERGIZED = system unloaded (P connected to T). Confirm this matches your control logic before wiring.
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).
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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