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Standard DBD NG10 (Typically M33 ×1.5 or M22 ×1.5, confirm with datasheet)
Port Connection
G1/2"
Adjustment Type
Hexagonal Bushing with Protective Cap (Standard)
Weight
Approx. 0.6 kg
Media & Environment
Seal Material
NBR (Standard for mineral oil)
Compatible Fluids
Mineral Oils (HL/HLP), HETG (Vegetable Oils), Biodegradable Fluids
Operating Temperature
-20 °C to +70°C (with NBR seals)
Fluid Cleanliness
ISO 4406 20/18/15 or cleaner
Related Part Numbers
DBDS6P1X/50
R900423732
DBDS 10 K1X/25
R900420276
DBDS6P1X/100
R900423728
DBDS 10 K1X/50
R900424153
DBDS 6 P1X/200
R900423729
DBDS 10 K1X/100
R900424147
DBDS6P1X/315
R900423730
DBDS 10 K1X/200
R900424149
DBDS6P1X/400
R90Q423731
DBDS 10 K1X/315
R900424150
DBDS 10 K1X/400
R900424152
DBDS 10 K1X/630
R900427601
Frequently Asked Questions
Q1: What does the "/200" pressure code mean? Can I adjust it to 300 bar?
No. The "/200" indicates this valve is equipped with a specific spring for the 200 bar pressure stage. Although the valve body is rated for 630 bar, the spring in this model is designed for reliable adjustment only up to 200 bar. Attempting to set it to 300 bar will result in inaccurate pressure control and potential spring damage. For higher pressures, select a model with a /315 or /400 spring code.
Q2: What is the correct installation cavity size and torque?
This is an NG10 size cartridge. You must use a standard DBD NG10 threaded cavity (commonly M33 ×1.5 or M22 ×1.5, but always verify with the official dimensional drawing for your specific series). The recommended tightening torque is typically 80-100 Nm, but you should confirm this in the technical data sheet to avoid damaging the threads or seals.
Q3: How does backpressure on the T (tank) port affect performance?
Backpressure is fully additive. Any pressure at the T-port directly adds to the pressure required to open the valve. For example, if the valve is set to 180 bar and the T-port has 20 bar of backpressure, the system will relieve at 200 bar. Ensure the total pressure (set pressure + T-port backpressure) does not exceed the valve's maximum rating of 630 bar.
Q4: Why is my valve chattering or not holding a stable pressure?
Common causes for chatter in direct-acting relief valves include:
Excessive Flow: Operating near or above the recommended 120 L/min flow limit for NG10.
High/Unstable Backpressure: Fluctuating pressure in the tank line disrupts the poppet's stability.
Contamination: Dirt or debris can cause the poppet to stick and release erratically. Ensure ISO 4406 20/18/15 cleanliness.
Q5: Is the standard NBR seal compatible with phosphate ester (HFD) fluid?
No. The standard R900424149 with NBR seals is not compatible with phosphate ester (HFD) fluids. For HFD applications, you must order a variant with FKM (Viton®) seals, which are typically denoted by a /V suffix in the model code (e.g., DBDS10K1X/200V).
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
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...
