PRESSURE RELIEF VALVE DBGT-1X/400P2

Manufacturer: Bosch Rexroth

Material #: R900416298

Model : DBGT-1X/400P2

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth DBGT-1X/400P2 (R900416298) is a high-performance industrial hydraulic valve designed for reliable pressure limitation in hydraulic systems. This pilot-operated pressure relief valve consists of a pilot control valve with an electric motor for pressure adjustment and a main valve with a spool insert. It operates by setting the system pressure through a DC motor coupled with a speed reduction transmission, which adjusts the tension on a spring to change the pressure. The DBGT-1X/400P2 offers precise control of system pressure limitation, with its operation based on the balance between the system pressure and the force exerted by the spring-loaded main spool. When the system pressure exceeds the set value, the pilot poppet opens, allowing pilot oil to flow and adjust the position of the main spool, thus regulating pressure from channel A to B while maintaining set operating conditions. Capable of subplate mounting and conforming to ISO 4401 porting patterns, this valve has multiple electrical connection options and can be actuated electrically with external electronics. It features an actual value potentiometer or limit switch for feedback and control purposes, ensuring that adjustments are precise and responsive. The self-locking mechanism ensures that in case of power failure, previously set pressures are maintained. Designed for versatility in application, this model accommodates various hydraulic fluids such as HL, HLP, HLPD, HVLP, HVLPD, and HFC. With maximum operating pressures up to 400 bar and flow rates up to specified limits (l/min), it meets demanding industrial requirements. The seals are made from NBR material ensuring durability against fluid exposure. The DBGT-1X/400P2's integrated amplifier type VTVRM enables program control for complex applications. Additional features like optional end switches or additional pressure switches provide further customization for specific operational needs within hydraulic circuits.

$24,067.00 USD

More are expected on April 14, 2025

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Status: This product is temporarily out of stock.

Qty: Delivered as early as April 14, 2025 when ordered in

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Repairs from $3,250.00

PRESSURE RELIEF VALVE DBGT-1X/400P2

Size , X → Y, electrical with external amplifier,

Industrial hydraulic valve in a high performance range. Reliable limitation of the pressure to the command value signal.

Unpacked Weight: 5.36 kg

Operation via DC motor with speed reduction transmission For subplate mounting: Porting pattern according to ISO 6264 5 pressure ratings With actual value potentiometer or limit switch Self-locking in case of power failure

Pressure valves of type DBG are pilot-operated pressure relief valves. They are used for system pressure limitation. The pressure relief valves from this series mainly consist of a pilot control valve with electric motor as pressure adjustment element and main valve with main spool insert. The system pressure is set by means of a DC motor (16) with speed reduction transmission (17). The output shaft of the speed reduction transmission (17) turns the cam (14) that tensions the spring (8) via the spring plate (15) and thereby causes a pressure change. The pressure applied to channel A acts on the main spool (1.1). Simultaneously, pressure is applied to the spring-loaded side of the main spool (1.1) and to the pilot poppet (6) in the pilot control valve (7) via the control lines (4) and (5) which are equipped with nozzles (2.1, 2.2) and (3). If the system pressure exceeds the value set at the spring (8), the pilot poppet (6) opens. The signal for this is provided internally - with type DBG..–1X/.. via the control lines (12) and (4) from channel A; or externally – with type DBG..–1X/..X (XY) via the connection (13) and the control line (4). The pilot oil now flows via nozzle (2.1), control line (4), nozzle (2.2) and pilot poppet (6) into the spring chamber. From here, it is fed into the tank, either internally – with type DBG..–1X/.. via control line (10), or externally – with type DBG..–1X/..Y (XY) via control line (11). The compression spring (1.2) acts on the main spool (1.1) in closing direction, i. e. there is a pressure drop between side “A” and the spring-loaded side of the main spool (1.1). The flowing pilot oil volume is determined by the cross-section of the nozzles (2.1, 2.2) and by the pressure drop at the main spool (1.1). When the pressure in “A” has increased by the pressure drop at the main spool (1.1) in relation to the cracking pressure at the pilot poppet (6), the main spool (1.1) opens from “A” to “B”. The oil now flows from channel “A” to channel “B”, whilst the set operating pressure is maintained. The cam position (14) is reported back by the actual value potentiometer (18). Optionally, electric end switches can be installed instead of the actual value potentiometer (18) to limit the min. and max. pressure. For the version with limit switch, the min. adjustment time is 12 seconds for the pressure range pmin to pmax. The adjustment time of 12 seconds facilitates a sensitive start-up of the desired pressure in jog mode. For the version with actual value potentiometer, the min. adjustment time is 0.65 seconds for the pressure range pmin to pmax. The integrated amplifier type VT-VRM1-1 enables program control. With 2 additional pressure switches, the min. and max. pressure can be limited. If the energy supply is interrupted (cable break, fuse defect, short-circuit, etc.), the pressure adjusted at the valve remains unchanged for the version with limit switch.

DC motor actuation
Pilot-operated
Pressure rating 400 bar
Proportional pressure valve in poppet seat design
Component series 1X
Operating pressure, max. 315 bar

Data Sheet	Download Data Sheet
Manual	Download Manual
Manual	Download Manual
Manual	Download Manual

Spool symbol	X → Y
Max. pressure	315
Electrical connection description	Mating connector 6-pole (5 + PE) according to DIN 43651
Productgroup ID	9,10,11,12,13,14
Number of ports	2
Type of actuation	Electrical with external electronics
Electrical connector	Mating connector 6-pole (5 + PE)
Max. flow	600
Type of connection	Subplate mounting
Supply voltage	24 VDC
Number of switching positions	2
Weight	5.36
Seals	NBR
Hydraulic fluid	HL,HLP,HLPD,HVLP,HVLPD,HFC

01	02		03		04	05	06	07	08
DBG	T	‒	1X	/					*

01	Pressure relief valve with DC motor actuation	DBG
02	separate pilot control valve asremote control valve (do not enter valve size)	T
03	Component series 10 ... 19 (10 ... 19: unchanged installation and connection dimensions)	1X
Pressure rating
04	Set pressure up to 50 bar	50
	Set pressure up to 100 bar	100
	Set pressure up to 200 bar	200
	Set pressure up to 315 bar	315
	Set pressure up to 400 bar	400
Pilot flow
05	Pilot oil supply internal, pilot oil return internal	no code
	External pilot oil supply, internal pilot oil return	X
	Internal pilot oil supply, external pilot oil return	Y
	External pilot oil supply, external pilot oil return	XY
Seal material
06	NBR seals	no code
	FKM seals	V
	Observe compatibility of seals with hydraulic fluid used. (Other seals upon request)
07	Limit switch	E1
07	Actual value potentiometer	P2
08	Further details in the plain text	*

For applications outside these parameters, please consult us!

general

Type		DBGT
Size
Component series		1X
Installation position		any
Earth	kg	5.1
Ambient temperature range	°C	-20 … +50

hydraulic

Maximum operating pressure		bar	315
	Port A	bar	315
	Port B (internal pilot oil return)	bar	10
	Port B (external pilot oil return)	bar	315
	Port X	bar	315
	Port Y	bar	10
Maximum set pressure	Pressure rating 50 bar	bar	50
	Pressure rating 100 bar	bar	100
	Pressure rating 200 bar	bar	200
	Pressure rating 315 bar	bar	315
	Pressure rating 400 bar	bar	400
Minimum set pressure			qv dependent (see characteristic curves)
Maximum flow		l/min	12
Pilot flow		l/min	1
Hydraulic fluid			see table
Hydraulic fluid temperature range		°C	-20 … +70
Viscosity range		mm²/s	2.8 … 380
Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1)			Class 20/18/15 according to ISO 4406 (c)

1)	The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter.

Hydraulic fluid	Classification	Suitable sealing materials	Standards
Mineral oils and related hydrocarbons	HL, HLP	NBR / FKM	DIN 51524
Bio-degradable - insoluble in water	HEES	FKM	VDMA24568
	HETG	NBR / FKM
	HEPG	FKM
Important information on hydraulic fluids! Further information and information on the use of other hydraulic fluids on request! There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.)! The flash point of the process and operating medium used must be 40 K over the maximum solenoid surface temperature. Bio-degradable: When using bio-degradable hydraulic fluids that are zinc-solving, zinc may accumulate in the fluid (700mg zinc per pole tube)

electrical

Type		DBGT
Voltage type		Direct voltage
Power supply	V	24
Nominal power with limit switch	W	18
Nominal power with actual value potentiometer	W	24
Protection class according to DIN EN 60529		IP65 (with mating connector mounted and locked)

Control in jog mode with limit switch: Ordering code “E1”

Adjustment time, pmin ... pmax		s	12
Limit switch version:	Microswitch		30 V; 2 A DC
Limit switch version:	electric load		250 V; 5 A AC
Pressure overrun:	Pressure rating	bar	50	100	200	315	400
	without short-circuit bridge	bar	1	2,5	5	7,5	10
	with short-circuit bridge	bar	0,5	1	1,5	2	2,5

Adjustment with actual value potentiometer for cam position feedback: Ordering code “P2”

Adjustment time, pmin ... pmax		s	0,65
Potentiometer	Resistance	kΩ	5
Potentiometer	Power	W	1,75
Adjustment hysteresis: breakout pressure - variation > 10 bar from nominal pressure
	Pressure rating	bar	50	100	200	315	400
	Hysteresis	bar	< 0,5	< 1	< 2,5	< 4	< 5
Adjustment hysteresis: breakout pressure - variation > 20 bar from nominal pressure
	Pressure rating	bar	50	100	200	315	400
	Hysteresis	bar	< 0,3	< 0,5	< 1	< 1,5	< 2
Repetition accuracy		bar	< 0,5	< 1	< 1,3	< 1,7	< 2
Valve amplifiers
Electric amplifier			VT-VRM1-1-1X

(measured at ν = 36 mm²/s and ϑOil = 50 °C)

Inlet pressure dependent on the flow; NG10

Size 10

Minimum set pressure dependent on the flow; NG 10

Size 10

Inlet pressure dependent on the flow; NG25

NG25

Minimum set pressure dependent on the flow; NG 25

NG25

Inlet pressure dependent on the flow; NG32

Size 32

Minimum set pressure dependent on the flow; NG 32

Size 32

Set pressure dependent on the flow; pressure rating 400 bar

Minimum set pressure dependent on the flow; pressure rating 400 bar

DBGC-1X/.. DBGT-1X/..

Connector connection at the DBG / DRG valve with actual value potentiometer

Connector connection at the DBG / DRG valve with end switch

Switching example: DBG / DRG valve with end switch

1	Pilot control valve
2	DC motor
3	“Y” port for “external” pilot oil return
5	Name plate
6	Mating connector
9	Space required to remove the mating connector
10	Valve mounting bores
16	O-ring 9.25 x 1.78

Recommended valve mounting screws (separate order):

4 hexagon socket head cap screws ISO 4762 - M8 x 50 - 10.9-flZn-240h-L

Tightening torque MA = 31 Nm ± 10%; material no. R913000543