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R901278310 DREE20-6X/315YMG24K31A1M German made Rexroth proportional relief valve

Name: R901278310 DREE20-6X/315YMG24K31A1M German made Rexroth proportional relief valve
Brand: Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
SKU: R901278310 DREE20-6X/315YMG24K31A1M
Availability: InStock

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R901278310 DREE20-6X/315YMG24K31A1M German made Rexroth proportional relief valve

Großes Bild : R901278310 DREE20-6X/315YMG24K31A1M German made Rexroth proportional relief valve

Produktdetails:

Herkunftsort:	Deutsch
Markenname:	Rexroth
Zertifizierung:	ISO
Modellnummer:	R901278310 DREE20-6X/315YMG24K31A1M

Zahlung und Versand AGB:

Min Bestellmenge:	1
Verpackung Informationen:	Holzkiste
Lieferzeit:	2 Wochen
Zahlungsbedingungen:	Western Union,T/T,D/A,D/P,L/C
Versorgungsmaterial-Fähigkeit:	100

Kontakt

R901278310 DREE20-6X/315YMG24K31A1M German made Rexroth proportional relief valve

Beschreibung

Modell:	DREE20-6X/315YMG24K31A1M	Einstellbarer Druckbereich:	~2 – 315 bar (elektrisch proportional, 0–10 V)
Max. Durchflusskapazität:	300 l/min	Versorgungsspannung:	24V DC (G24)
Medientemperatur:	-20°C bis +80°C

Parameter	Specification
Order Number	R901278310
Model	DREE20-6X/315YMG24K31A1M
Type	Pilot-operated proportional pressure reducing valve (2-way, B→A)
Function	Reduces inlet pressure (B) to controlled secondary pressure (A); excess flow internally drained
Nominal Size	NG20 (CETOP 7, Size 20)
Max. Operating Pressure	Port A & B: 315 bar Port Y (External Pilot Drain): Must be separately connected to tank with minimal backpressure
Adjustable Pressure Range	~2 – 315 bar (Electrically proportional, 0–10V)
Max. Flow Capacity	300 L/min
Pilot Flow Consumption	Approx. 0.8 – 1.2 L/min (Internal pilot supply)
Valve Design	Pilot-operated spool valve, with integrated electronics (OBE)
Supply Voltage	24V DC (G24)
Control Signal	0 – +10 V (A1)
Electrical Connector	6-pin + PE (K31) per DIN EN 175201-804
Special Features	Integrated electronics (OBE), Mechanical max. pressure limiter (M), External pilot drain (Y), No check valve (M)
Mounting Interface	ISO 5781-AG-10-2-A (NG20 subplate)
Seal Material	NBR (M)
Suitable Media	Mineral oils (HL, HLP), HLP-D, HVLP, HFC fluids
Media Temperature	-20°C to +80°C
Viscosity Range	15 – 380 mm²/s (recommended 30–46 mm²/s)
Ambient Temperature	-20°C to +50°C (electronics)
Cleanliness Requirement	ISO 4406 20/18/15 or better
Control Performance	Hysteresis ≤ ±3.5 %, Repeat accuracy < ±2 %
Weight	Approx. 6.1 – 6.2 kg

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FAQ:

Integrated Electronics (OBE)

The "E" in DREE confirms On-Board Electronics (OBE). This means the valve contains its own amplifier. You supply 24V DC power and a 0–10 V command signal directly to the valve's K31 connector. This simplifies wiring and eliminates the need for an external VT-VSPA amplifier.
Mechanical Maximum Pressure Limiter (M)

The "M" immediately after DREE20 indicates the valve includes a mechanical safety relief valve as a maximum pressure limiter. This is a safety feature that hydraulically limits the maximum pressure at port A to approximately 350 bar, protecting the system in case of an electrical control fault.
High Pressure & Flow Rating (315 bar / 300 L/min)

The "315" denotes the maximum electrically adjustable reduced pressure at port A. This is the highest pressure variant in the DREE20 series, capable of handling flows up to 300 L/min, making it suitable for high-power industrial systems.
External Pilot Drain (Y) & No Check Valve
- "Y": The pilot control oil must be drained externally via port Y. This port must be connected directly to the tank with minimal backpressure. High backpressure at Y will cause inaccurate pressure regulation.
- "M" at the end: The suffix "M" indicates no check valve is included between ports A and B. This means flow from port A back to port B is blocked by the spool design. If your application requires free reverse flow (A→B), you would need a variant without the final "M" code.
Critical Installation Notes
- Port Y Drain: Must be piped separately to tank with a line diameter ≥ 5 mm and length < 2.5 m to avoid backpressure issues.
- Zero Signal Pressure: With a 0 V command signal, the valve maintains a minimum pressure of approximately 2 bar at port A.
- Subplate: Requires an NG20 subplate according to ISO 5781-AG-10-2-A (e.g., Rexroth RE 45102 series).

Correction: Your description mentioned "proportional relief valve", but this model is specifically a proportional pressure reducing valve. It controls the downstream (A-port) pressure, not the system relief pressure.

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