Genuine Bosch Rexroth R900423735, type DBDS8G1X/315: Pressure Relief Valve NG8, Pressure Stage 315 bar, 120 l/min.
The relief valve keeps the circuit below its maximum pressure; the adjustment element (handwheel, hexagon with cap or lockable knob) and the pressure stage are part of the type code.
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 | R900423735 |
|---|---|
| رمز الموديل | DBDS8G1X/315 |
| Operating pressure, max. | 315 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
- Pump and power-unit protection
- Replacement of a worn relief valve
- Secondary pressure limiting on actuator lines
- Presses and clamping circuits
- Test benches
Compatibility and replacement
Order with the 10-character material number R900423735; in Rexroth codes every character (size, pressure stage, adjustment element, options and seals) changes the part, so the type code DBDS8G1X/315 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.
What to check first
- Seal material
- Adjustment element
- Size and connection (subplate, threaded body or cartridge cavity)
Frequently asked questions
Which spool symbol does it have?
P → T, according to the Bosch Rexroth product data.
What size is it?
Size 8 (NG8), according to the Bosch Rexroth product data.
How much does it weigh?
3.62 kg, according to the Bosch Rexroth product data.
What is the maximum operating pressure?
315 bar, according to the Bosch Rexroth product data.
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.
Can you help me identify the right replacement?
Yes. Send us a photo of the label of the old part, or its full order code, and we will confirm the exact match or the official successor before quoting.
Can I get a price and delivery time?
Prices are quoted on request. Send the order number, quantity and delivery country on WhatsApp and we will reply with price and delivery time; air shipping is usually 5 to 7 days once ready, with a 1-year warranty.
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.





