Bosch Rexroth material number R900427604 is the DBDS20G1X/50V Pressure Relief Valve NG20, Pressure Stage 50 bar, 235 l/min (size 20, P → T, with mechanical actuation).
Direct-operated relief valves of the DBD type are the basic safety element of a hydraulic circuit; the pressure stage in the type code defines the highest pressure the valve can be set to.
More Rexroth hydraulic and linear-motion parts: Bosch Rexroth range.
The Rexroth product description reads: “Industrial hydraulic valve in a high performance range. Reliable pressure limitation to setting”
Technical data
| Material number | R900427604 |
|---|---|
| رمز الموديل | DBDS20G1X/50V |
| Operating pressure, max. | 50 bar |
| Max. flow | 235 l/min |
| Spool symbol | P → T |
| Type of connection | Threaded connection |
| Size | 20 |
| Type of actuation | with mechanical actuation |
| Number of ports | 2 |
| Number of switching positions | 2 |
| Seals | FKM |
| الوزن | 6.74 kg |
| Hydraulic fluids (per Rexroth) | HEES, HEPG, HETG, HFDR, HFDU, HL, HLP, HLPD, HVLP, HVLPD |
| Product family | DBD.6-30 |
| Data sheet | RD25402 |
| Brand | Bosch Rexroth |
| Condition | New, original |
Design features, as listed by Rexroth
- Hexagon with protective cap
- Proportional pressure valve in poppet seat design
- Direct actuated
Typical applications
- Test benches
- Pump and power-unit protection
- Replacement of a worn relief valve
- Secondary pressure limiting on actuator lines
- Presses and clamping circuits
Compatibility and replacement
Order with the 10-character material number R900427604; in Rexroth codes every character (size, pressure stage, adjustment element, options and seals) changes the part, so the type code DBDS20G1X/50V on the nameplate should match exactly.
If the nameplate of the old part is unreadable, send us a photo of the part or the machine hydraulic diagram and we will identify the matching Rexroth material number.
Before you replace it
- Size and connection (subplate, threaded body or cartridge cavity)
- Seal material
- Pressure stage (maximum setting)
Frequently asked questions
Which hydraulic fluids can it be used with?
Rexroth lists HEES, HEPG, HETG, HFDR, HFDU, HL, HLP, HLPD, HVLP, HVLPD fluids for this part; check that the seal material suits your fluid.
How much does it weigh?
6.74 kg, according to the Bosch Rexroth product data.
How is it actuated?
With mechanical actuation, according to the Bosch Rexroth product data.
How is it connected?
Threaded connection, according to the Bosch Rexroth product data.
Which seal material is fitted?
FKM, according to the Bosch Rexroth product data.
Can I get the datasheet?
The official manufacturer data is the source of the technical values above; we can send the datasheet with the quotation on request.
Do you ship to my country, and what is the warranty?
Yes. RendatSP ships worldwide from Yiwu, China, by air in 5 to 7 days once the part is ready, and every part carries a 1-year warranty. Send the order number and quantity on WhatsApp and we will reply with a quotation.
Ordering tips
Send us the full order number from the label of the old part, or a clear photo of the label, together with the quantity you need. We check the number against the current manufacturer data before we quote and tell you if there is a newer replacement.
Every part RendatSP supplies is new and original, carries a 1-year warranty and ships worldwide by air in 5 to 7 days once ready (shipping, payment and warranty). Send us the order number and quantity on WhatsApp or through the inquiry form and we will quote the same working day. Agents in Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.





