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China factory - Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.

Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.

  • China ,Fujian
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  3. R900423726 DBDS6K1X/400 Rexroth Germany plug-in overflow valve
China R900423726 DBDS6K1X/400 Rexroth Germany plug-in overflow valve
China R900423726 DBDS6K1X/400 Rexroth Germany plug-in overflow valve

  1. China R900423726 DBDS6K1X/400 Rexroth Germany plug-in overflow valve

R900423726 DBDS6K1X/400 Rexroth Germany plug-in overflow valve

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Adjustment Type​ Hexagonal Bushing with Protective Cap
Supply Ability 100
Operating Temperature​ -20°C to +70°C​ (with NBR seals)
Delivery Time 2 weeks
Payment Terms Western Union,T/T,D/P,D/A,L/C
Certifiion ISO
Compatible Fluids​ Mineral Oils (HL/HLP), Water Glycol (HFC)
Seal Material​ NBR​ (Standard for mineral oil)
Packaging Details wooden box
Fluid Cleanliness​ ISO 4406 20/18/15​ or cleaner
Model Number R900423726 DBDS6K1X/400
Place of Origin Germany
Brand Name Rexroth

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  1. Product Details
  2. Company Details

Product Specification

Adjustment Type​ Hexagonal Bushing with Protective Cap Supply Ability 100
Operating Temperature​ -20°C to +70°C​ (with NBR seals) Delivery Time 2 weeks
Payment Terms Western Union,T/T,D/P,D/A,L/C Certifiion ISO
Compatible Fluids​ Mineral Oils (HL/HLP), Water Glycol (HFC) Seal Material​ NBR​ (Standard for mineral oil)
Packaging Details wooden box Fluid Cleanliness​ ISO 4406 20/18/15​ or cleaner
Model Number R900423726 DBDS6K1X/400 Place of Origin Germany
Brand Name Rexroth
High Light Rexroth hydraulic overflow valve ，DBDS6K1X plug-in valve ，Rexroth Germany hydraulic valve
R900423726 DBDS6K1X/400 Rexroth Germany Plug-in Overflow Valve
Product Overview

The DBDS6K1X/400 is a direct-operated pressure relief valve from Rexroth Germany, designed as a screw-in cartridge for hydraulic systems requiring precise pressure control up to 400 bar.

Technical Specifiions
Parameter egoryParameterSpecifiion
General InformationManufacturer / ModelRexroth (Germany), DBDS6K1X/400
Part NumberR900423726
Valve TypeDirect-Operated Pressure Relief Valve (Screw-in Cartridge, Poppet Type)
Performance ParametersNominal SizeNG6
Max. Operating Pressure400 bar (Body Rating)
Pressure Setting RangeUp to 400 bar (Spring Code /400)
Max. Recommended Flow50 L/min
FunctionNormally Closed (P→T opens at set pressure)
Mechanical InterfaceMounting StyleScrew-in Cartridge
Cavity RequirementStandard DBD NG6 (M28 ×1.5)
Port ConnectionG1/4" (or M14×1.5)
Adjustment TypeHexagonal Bushing with Protective Cap
WeightApprox. 0.39 kg
Media & EnvironmentSeal MaterialNBR (Standard for mineral oil)
Compatible FluidsMineral Oils (HL/HLP), Water Glycol (HFC)
Operating Temperature-20 °C to +70°C (with NBR seals)
Fluid CleanlinessISO 4406 20/18/15 or cleaner
Rexroth DBDS series pressure relief valve technical diagram
Product Variants
DBDS 6 K1X/25K900420245
DBDS 6 K1X/50R900423727
DBDS 6 K1X/100R900423723
DBDS 6 K1X/200R900423724
DBDS 6 K1X/315R900423725
DBDS6K1X/400R900423726
DBDS6G1X/25R900423718
DBDS6G1X/50R900423722
DBDS6G1X/100R900423717
DBDS6G1X/200R900423719
DBDS6G1X/315R900423720
DBDS6G1X/400R900423721
DBDS6P1X/25R900429414
DBDS6P1X/50R900423732
DBDS6P1X/100R900423728
DBDS 6 P1X/200R900423729
DBDS6P1X/315R900423730
DBDS6P1X/400R90Q423731
DBDS 10 K1X/25R900420276
DBDS 10 K1X/50R900424153
DBDS 10 K1X/100R900424147
DBDS 10 K1X/200R900424149
DBDS 10 K1X/315R900424150
DBDS 10 K1X/400R900424152
DBDS 10 K1X/630R900427601
DBDS 10G1X/25R900423743
DBDS 10G1X/50R900424745
DBDS 10G1X/100R900424738
DBDS 10G1X/200R900424140
DBDS 10G1X/315R900424742
DBDS 10G1X/400R900424744
DDDS 10 P1X/25R900426905
DBDS 10 P1X/100R900424155
DBDS 10 P1X/315R900424158
DBDS 10 P1X/400R900425660
DBDS 15G1X/100R900424162
DBDS 15G1X/200R900424163
DBDS 15G1X/315R900424165
DBDS 20 K1X/25R900422542
DBDS 20 K1X/50R900424205
DBDS 20 K1X/100R900424267
DBDS 20 K1X/315R900424271
DBDS 20 K1X/400R900424203
DBDS20G1X/25R900422544
DBDS20G1X/50R900424276
DBDS20G1X/100R900424170
DBDS20G1X/200R900424172
DBDS20G1X/315R900424174
DBDS 20 P1X/100R900424274
DBDS 20 P1X/200R900424277
DBDS 20 P1X/315R900424278
DBDS25G1X/25R900433929
DBDS25G1X/100R900424263
DBDS25G1X/200R900424264
Frequently Asked Questions
What is the key difference between the /400 and the /100 or /200 models?
The /400 suffix indies this valve is equipped with a heavy-duty spring calibrated for a maximum setting of 400 bar. The /100 and /200 models have softer springs and cannot be adjusted to 400 bar. While the valve body rating is 400 bar, you must use the correct spring version (/400) to achieve reliable pressure settings in the 315-400 bar range.
What is the correct installation cavity and torque?
You must use a standard DBD NG6 (M28 ×1.5) threaded cavity. Using an incorrect cavity will cause leakage or malfunction. The recommended tightening torque is 50 ±5 Nm. Over-tightening can damage the threads or seals, while under-tightening will cause leaks.
How does backpressure on the T (tank) port affect the set pressure?
Backpressure is fully additive. Any pressure at the T-port is directly added to the pressure required to open the valve. For example, if the valve is set to 350 bar and the T-port has 30 bar of backpressure, the system will relieve at approximately 380 bar. Ensure the total pressure (set pressure + backpressure) does not exceed the valve's 400 bar maximum rating.
Why is the valve chattering or oscillating near the set pressure?
Chatter is common with direct-acting valves at high pressures and flows. Primary causes are:
1. Excessive Flow: The NG6 size is optimized for flows up to 50 L/min. If your flow is higher, consider an NG10 valve.
2. High Tank Backpressure: Unstable or high backpressure disrupts the poppet's stability.
3. Contamination: Dirt can cause the poppet to stick and then release erratically.
Can I use this valve with phosphate ester (HFD) fluid?
No, not with the standard version. The standard R900423726 has NBR seals, which are not compatible with phosphate ester (HFD) fluids. For HFD fluids, you must order a variant with FKM (Viton®) seals, which typically have a /V suffix (e.g., DBDS6K1X/400V).

Company Details

Bronze Gleitlager

,

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Graphite Plugged Bushings

 from Quality China Factory

  • Business Type:

    Manufacturer,Exporter

  • Total Annual:

    1 million-10 millon

  • Employee Number:

    >50

  • Ecer Certification：

    Verified Supplier

Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha... Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha...

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  • Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
  • Nan'an, Fujian Province, China
  • https://www.electrichydpump.com/

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