PRESSURE RELIEF VALVE DBDS 4 K1X/200-090 SO156

Manufacturer: Bosch Rexroth

Material #: R900730864

Model : DBDS 4 K1X/200-090 SO156

***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 DBDS 4 K1X/200-090 SO156 (R900730864) is a high-performance screw-in cartridge valve designed for direct operation in hydraulic systems. This pressure relief valve belongs to the DBD.K product family and is engineered to maintain system pressure within desired limits, ensuring operational safety and efficiency. The DBDS 4 K1X/200-090 SO156 features a nominal flow and can handle a maximum operating pressure of up to bar ( psi), with a maximum flow rate of l/min ( gpm). It is constructed with an NBR sealing material suitable for HL and HLP hydraulic fluids, making it robust for various hydraulic applications. The valve's cavity type Mx ensures compatibility with standardized block designs, facilitating ease of installation and maintenance. Users can precisely adjust the system pressure according to their requirements using the headless setscrew with an internal hexagon, which provides one of the adjustment options available. The poppet-type spool ensures leakage-free performance up to a negligible percentage of the set cracking pressure, highlighting its exceptional sealing capabilities for demanding applications. With its direct acting feature, the Bosch Rexroth DBDS 4 K1X/200-090 SO156 operates reliably by opening the poppet when system pressure exceeds set levels, allowing excess fluid to flow into the main port and thereby preventing potential damage or failure due to overpressure. Its compact size and weight make it suitable for integration into various hydraulic circuit designs without adding significant bulk or weight. Overall, this product represents a reliable solution for hydraulic systems requiring precise pressure control with minimal leakage.

$919.40 USD

More are expected on April 8, 2025

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Status: This product is temporarily out of stock.

Qty: Delivered as early as April 8, 2025 when ordered in

This product is eligible for factory repair.

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PRESSURE RELIEF VALVE DBDS 4 K1X/200-090 SO156

Unpacked Weight: 0.075 kg

Screw-in cartridge valve For applications with especially high tightness requirements Leakage-free up to a maximum of 80 % of the set cracking pressure 2 adjustment types, optionally:
• Grub screw with internal hexagon
• Hand wheel

The pressure valve type DBD...SO156 is a direct operated pressure relief valve for the installation in block designs.

It is used for applications with especially high sealing requirements for limiting a system pressure.

The system pressure can be set via the adjustment type (4).

The valve is closed in initial position. Via control line (2) and poppet (1), the pressure in the main port ① acts on the spring plate (5). If the pressure in the main port ① rises above the value set at the compression spring (3), the poppet (1) opens and the hydraulic fluid flows into the main port ②

Screw-in cartridge valve
Maximum operating pressure 420 bar (6000 psi)
Maximum flow 20 l/min (5 gpm)
Cavity M14x1

Max. pressure	420
Adjustment options	Headless setscrew with internal hexagon
Product family classification	Pressure relief valve, direct operated
Productgroup ID	9,10,11,12,13,14
Product family type	DBD.K
Ports number	2
Sealing material	NBR
Cavity	M14x1
Product type	DBD.K
Max. flow	20
Type of connection	Screw-in cartridge valve
Nominal flow	20
Direct - Pilot	Direct acting
Product family	Relief
Spool Poppet	Poppet type
Weight	0.075
Hydraulic fluid	HL,HLP

01	02	03	04	05		06	07	08	09	10	11
DBD		4	K	1X	/				V	S0156	*

01	Pressure relief valve, direct controlled	DBD
Adjustment type
02	Grub screw with internal hexagon	S
02	Hand wheel	H
03	Size 4	4
04	Cartridge valve	K
05	Component series 10 ... 19 (10 ... 19: unchanged installation and connection dimensions)	1X
Pressure rating
06	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 420 bar	420
Seal material
07	set to cracking pressure	–
07	set and sealed to cracking pressure	P
Cracking pressure
08	Cracking pressure 90 +5 bar	e.g. 090
Seal material
09	FKM seals	V
09	Observe compatibility of seals with hydraulic fluid used. (Other seals upon request)
10		SO156
11	Further details in the plain text	*

hydraulic

Size		4
Maximum operating pressure	bar	420
Maximum flow	l/min	20
Hydraulic fluid		see table
Hydraulic fluid temperature range	°C	-20 … +80
Viscosity range	mm²/s	20 … 200
Maximum admissible degree of contamination of the hydraulic fluid 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.

general

Size		4
Weight (approx.)	kg	0.05
Installation position		any
Ambient temperature range	°C	-20 … +80

For applications outside these parameters, please consult us!

Hydraulic fluid		Classification	Suitable sealing materials	Standards
Mineral oil		HL, HLP	FKM, NBR	DIN 51524
Bio-degradable	Insoluble in water	HEES (synthetic esters)	FKM	VDMA 24568
	Insoluble in water	HETG (rape seed oil)	FKM, NBR	VDMA 24568
	Soluble in water	HEPG (polyglycols)	FKM	VDMA 24568
Other hydraulic fluids on request

(measured with HLP46, ϑOil = 40 ±5 °C)

pE-qV characteristic curves

Δp-qv characteristic curve

The characteristic curves apply for output pressure = 0 in the entire flow range!

Definition cracking pressure:

Pressure in bar with qV = 0.95 +0.05 l/min

➀	Main port 1 (P)
➁	Main port 2 (T)

Dimensions in mm

1.1	Adjustment type “S”, internal hexagon SW5
1.2	Adjustment type “H”, hand wheel
2	Lock nut SW17
3	Hexagon SW17, tightening torque during screw-in MA = 23±2 Nm
4	embossed type designation

➀	Main port 1 (P)
➁	Main port 2 (T)
LS	Location shoulder

➀	Main port 1 (P)
➁	Main port 2 (T)
LS	Location shoulder
Tolerance for all angles ± 0.5 °

Standards:
Workpiece edges	DIN ISO 13715
Form and position tolerance	DIN EN ISO 1101
General tolerances for metal-cutting procedures	DIN ISO 2768-mK
Tolerance	DIN EN ISO 1302
Surface condition	DIN EN ISO 1302