Genuine Bosch Rexroth R900427603, type DBDS8G1X/400: Pressure Relief Valve NG8, Pressure Stage 400 bar, 120 l/min.
A pressure relief valve limits the system pressure: when the set pressure is reached, the poppet opens and returns oil to tank, protecting pumps, hoses and actuators from overload.
More Rexroth hydraulic and linear-motion parts: Bosch Rexroth range.
In the words of the manufacturer: “Industrial hydraulic valve in a high performance range. Reliable pressure limitation to setting”
Technical data
| Material number | R900427603 |
|---|---|
| رمز الموديل | DBDS8G1X/400 |
| Operating pressure, max. | 400 bar |
| Max. flow | 120 l/min |
| Spool symbol | P → T |
| Type of connection | Threaded connection |
| Size | 8 |
| Type of actuation | with mechanical actuation |
| Number of ports | 2 |
| Number of switching positions | 2 |
| Seals | NBR |
| الوزن | 3.62 kg |
| Hydraulic fluids (per Rexroth) | HFC (Fuchs: Hydrotherm 46M, Renosafe 500; Petrofer: Ultra Safe 620; Houghton: Safe 620; Union: Carbide HP5046), HL, HLP, HLPD, HVLP, HVLPD |
| Product family | DBD.6-30 |
| Data sheet | RD25402 |
| Brand | Bosch Rexroth |
| Condition | New, original |
At a glance
- Hexagon with protective cap
- Proportional pressure valve in poppet seat design
- Direct actuated
Typical applications
- Presses and clamping circuits
- Replacement of a worn relief valve
- Secondary pressure limiting on actuator lines
- Test benches
- Pump and power-unit protection
Compatibility and replacement
Order with the 10-character material number R900427603; in Rexroth codes every character (size, pressure stage, adjustment element, options and seals) changes the part, so the type code DBDS8G1X/400 on the nameplate should match exactly.
The values in the table come from the official Bosch Rexroth product data. If your old part shows a different series index (for example 5X instead of 6X), send us a photo and we will confirm the current equivalent.
Replacement checklist
- Pressure stage (maximum setting)
- Size and connection (subplate, threaded body or cartridge cavity)
- Adjustment element
Frequently asked questions
Which hydraulic fluids can it be used with?
Rexroth lists HFC (Fuchs: Hydrotherm 46M, Renosafe 500; Petrofer: Ultra Safe 620; Houghton: Safe 620; Union: Carbide HP5046), HL, HLP, HLPD, HVLP, HVLPD fluids for this part; check that the seal material suits your fluid.
How much does it weigh?
3.62 kg, according to the Bosch Rexroth product data.
Which seal material is fitted?
NBR, according to the Bosch Rexroth product data.
What size is it?
Size 8 (NG8), according to the Bosch Rexroth product data.
How is it actuated?
With mechanical actuation, according to the Bosch Rexroth product data.
Do you supply larger quantities for projects?
Yes. For panel builders, OEMs and plant projects we quote complete lists; send the bill of materials on WhatsApp or through the inquiry form.
How fast can you deliver, and is there a warranty?
Air shipping usually takes 5 to 7 days once the part is ready, to almost any country. Each part is new and original with a 1-year warranty. Message us on WhatsApp with the order number for a quotation.
How to order
Message us the order number and quantity. For breakdowns, tell us the delivery address and we will offer the fastest shipping option. If the exact part is discontinued, we confirm the official successor before quoting.
RendatSP ships from Yiwu, China, to factories worldwide; air delivery usually takes 5 to 7 days once the part is ready. The part is new and original with a 1-year warranty (shipping, payment and warranty). For a quotation, message us on WhatsApp with the order number and quantity. We also have agents in Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.
