R900974700 DBW10A2-5X/350-6EG24N9K4 Electromagnetic overflow valve from Rexroth Germany
Price:
100
MOQ:
1
Delivery Time:
2 weeks
Brand:
Rexroth
Product Description
R900974700 DBW10A2-5X/350-6EG24N9K4 Electromagnetic Overflow Valve
Product Overview
Pilot-operated pressure relief valve with integrated solenoid unloading from Rexroth Germany. Designed for precise pressure control and system unloading in industrial hydraulic applications.
| 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 |
| Fluid Temperature Range | -30 °C to +80 °C (NBR seals) |
| Viscosity Range | 10-800 mm²/s |
| Weight (approx.) | 3.2 kg |
| Body Material | Cast iron / steel, zinc-plated |
Related Part Numbers
R900968136 4WEH10W4X/6EG24N9ES2K4/B10
R900979333 4WEH10W4X/6EG24N9ETK4/B08
R900728042 4WEH10W4X/6EG24N9ETK4/B10
R978910695 4WEH10W4X/6EG24N9ETK4/B10D3
R900705005 4WEH10W4X/6EG24N9ETK4QM0G24/B10
R900617128 4WEH10W4X/6EG24N9ETSK4/B10
R900729003 4WEH10W4X/6EG24N9ETS2K4/B10
R901041478 4WEH10W4X/6EG24N9TK4/10
R900909539 4WEH10W4X/6EG24N9TSK4
R900246938 4WEH10W4X/6EW230N9ETK4/B10
R900976182 4WEH10W4X/6EW230N9ETS2K4/B10
R900929118 4WEH10Y4X/6EG24K4
R901114820 4WEH10Y4X/6EG24K4QMAG24
R900725078 4WEH10Y4X/6EG24NETK4/B10
R900707795 4WEH10Y4X/6EG24N9K4
R901059217 4WEH10Y4X/6EG24N9K4/V
R901180025 4WEH10Y4X/6EG24N9K4QMAG24
R900948273 4WEH10Y4X/6EG24N9SK4
R900246990 4WEH10Y4X/6EG24N9S2K4
R901065062 4WEH10Y4X/6EG24N9EK4/B10
R900952409 4WEH10Y4X/6EG24N9ETK4/B08
R901210826 4WEH10Y4X/6EG24N9ETK4/B10
R900750869 4WEH10Y4X/6EG24N9ETK4/B10V
R900970433 4WEH10Y4X/6EG24N9ETK4/B10D3
R901056436 4WEH10Y4X/6EG24N9ETSK4/12B10
R900965844 4WEH10Y4X/6EG24N9ETSK4QMBG24/B10
R900968054 4WEH10Y4X/6EG24N9ETS2K4/B10
R901128705 4WEH10Y4X/6EG24N9TK4/B08
R900952153 4WEH10Y4X/6EW230N9K4
R900700680 4WEH10Y4X/6EW230N9ETK4/B10
R900249940 4WEH10Y4X/6EW230N9ETSK4/B10
R901104865 4WEH10Y4X/6EW230N9ETS2K4/B10
R901095291 4WEH10HY4X/6EG24N9ETK4/B10
R900728897 4WEH10Z4X/6EG24NS2K4/B12
R900976967 4WEH10Z4X/6EG24N9ETK4/B10
R900718789 4WEH10Z4X/6EG24N9ETS2K4/B10
R901116625 4WEH10Z4X/6EW230N9S2K4
R901108119 4WEH10HZ4X/O6EG24N9ETK4/B10
R900979333 4WEH10W4X/6EG24N9ETK4/B08
R900728042 4WEH10W4X/6EG24N9ETK4/B10
R978910695 4WEH10W4X/6EG24N9ETK4/B10D3
R900705005 4WEH10W4X/6EG24N9ETK4QM0G24/B10
R900617128 4WEH10W4X/6EG24N9ETSK4/B10
R900729003 4WEH10W4X/6EG24N9ETS2K4/B10
R901041478 4WEH10W4X/6EG24N9TK4/10
R900909539 4WEH10W4X/6EG24N9TSK4
R900246938 4WEH10W4X/6EW230N9ETK4/B10
R900976182 4WEH10W4X/6EW230N9ETS2K4/B10
R900929118 4WEH10Y4X/6EG24K4
R901114820 4WEH10Y4X/6EG24K4QMAG24
R900725078 4WEH10Y4X/6EG24NETK4/B10
R900707795 4WEH10Y4X/6EG24N9K4
R901059217 4WEH10Y4X/6EG24N9K4/V
R901180025 4WEH10Y4X/6EG24N9K4QMAG24
R900948273 4WEH10Y4X/6EG24N9SK4
R900246990 4WEH10Y4X/6EG24N9S2K4
R901065062 4WEH10Y4X/6EG24N9EK4/B10
R900952409 4WEH10Y4X/6EG24N9ETK4/B08
R901210826 4WEH10Y4X/6EG24N9ETK4/B10
R900750869 4WEH10Y4X/6EG24N9ETK4/B10V
R900970433 4WEH10Y4X/6EG24N9ETK4/B10D3
R901056436 4WEH10Y4X/6EG24N9ETSK4/12B10
R900965844 4WEH10Y4X/6EG24N9ETSK4QMBG24/B10
R900968054 4WEH10Y4X/6EG24N9ETS2K4/B10
R901128705 4WEH10Y4X/6EG24N9TK4/B08
R900952153 4WEH10Y4X/6EW230N9K4
R900700680 4WEH10Y4X/6EW230N9ETK4/B10
R900249940 4WEH10Y4X/6EW230N9ETSK4/B10
R901104865 4WEH10Y4X/6EW230N9ETS2K4/B10
R901095291 4WEH10HY4X/6EG24N9ETK4/B10
R900728897 4WEH10Z4X/6EG24NS2K4/B12
R900976967 4WEH10Z4X/6EG24N9ETK4/B10
R900718789 4WEH10Z4X/6EG24N9ETS2K4/B10
R901116625 4WEH10Z4X/6EW230N9S2K4
R901108119 4WEH10HZ4X/O6EG24N9ETK4/B10
Frequently Asked Questions
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.
- 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 indication, observe (+) / (-) polarity markings.
- Electrical: EN 175301-803 Form A (DIN 43650-A) 3-pin + PE connector, 24 V DC. If the plug has LED indication, 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
- 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.
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Company
Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
Location
Nan'an, Fujian Province, China
Contact Person
liyun