Upgrade Rexroth relief valve DBDS10K1C/100 to DBDS10K18/
LEHIY item code: LH-0004
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The Rexroth DBDS10K1C/100 relief valve is an upgrade to the DBDS10K18/100 DBD type Rexroth relief valve, which is a direct-acting seat valve. These valves are used to limit system pressure. These Rexroth valves mainly consist of the following components: a sleeve
- , a spring
- , a valve core
- with a damping plunger (pressure rating 25 bar … 400 bar) or a ball
- (pressure rating 630 bar), and an adjustment type
- . The system pressure can be steplessly adjusted using the adjustment type
- . the surface of the valve core (or ball). If the pressure in channel P exceeds the value set on the spring
- , the valve core
- or ball
- opens away from the spring
- . At this time, hydraulic oil flows from channel P into channel T. The stroke of the valve core
- is limited by the embossing
- . To achieve good pressure regulation throughout the entire pressure range, the DBD type Rexroth relief valve has been divided into 7 pressure levels. Each pressure level corresponds to a specific spring that can be set to a maximum working pressure. Rexroth relief valve model DBDS..K1X/… Pressure rating 25 … 400 bar (lift seat valve) Some models in the German Rexroth DBD series relief valves: DBDS10K-1X/315 DBDS10K-1X/315 DBDS20G-1X/315V DBDS20K-1X/200 DBDS20K-1X/315 DBDS20P-10/31.5 DBDS10-P1X/315 DBDS10K1X/400 DBDS10K1X/400 DBDS10G-1X/200 Rexroth relief valve DBDS10K1C/100 upgraded to DBDS10K18/100 Reasons for noise generation in DBD series Rexroth relief valves: Noise and vibration Components in hydraulic systems that are prone to noise are generally considered to be pumps and valves, with relief valves and solenoid directional valves being the main types of valves. There are many factors that generate noise. The noise of Rexroth relief valves can be divided into two types: flow velocity noise and mechanical noise. Flow velocity noise is mainly caused by oil vibration, cavitation and hydraulic shock. Mechanical noise is mainly caused by the impact and friction of parts in the valve. caused by uneven pressure in Rexroth relief valves The pilot valve part of the pilot relief valve is a vibration-prone part as shown in the figure. When overflowing under high pressure, the axial opening of the pilot valve is very small, only 0.003 to 0.006 cm. The flow area is very small and the flow velocity is very high, up to 200 m/s, which can easily cause uneven pressure distribution, causing the radial force of the cone valve to be unbalanced and generate vibration. In addition, the ellipticity generated during the processing of the cone valve and cone valve seat, the dirt stuck in the pilot valve port and the deformation of the pressure regulating spring, etc., can also cause the cone valve to vibrate. Therefore, the pilot valve is generally considered to be the source of noise. The presence of elastic elements (springs) and moving mass (cone valves) creates conditions for oscillation, and the pilot valve front chamber acts as a resonant cavity. noise. When noise occurs, it is usually accompanied by violent pressure fluctuations.
- Noise generated by cavitation in Rexroth relief valves When air is drawn into the oil for various reasons, or when the oil pressure is lower than atmospheric pressure, some of the air dissolved in the oil will precipitate and form bubbles. These bubbles are larger in volume in the low-pressure area. When they flow with the oil to the high-pressure area, they are compressed and their volume suddenly decreases or the bubbles disappear. Conversely, if the volume is smaller in the high-pressure area area, but suddenly increases when it flows to the low-pressure area, the volume of the bubbles in the oil changes rapidly. The sudden change in the volume of the bubbles will generate noise. Since this process occurs instantaneously, it will cause local hydraulic shock and generate vibration. valve: When Rexroth pilot-operated relief valve is unloaded, pressure shock noise will occur due to the rapid drop in pressure in the hydraulic circuit. The higher the working conditions of high pressure and large capacity, the greater this shock noise will be. This is because the unloading time of the relief valve is very short, resulting in hydraulic shock. During unloading, the oil flow rate changes drastically, causing a sudden pressure change and resulting in pressure wave impact. The pressure wave is a small shock wave, and the noise it generates is very small. However, as it is transmitted to the system with the oil, if it resonates with any mechanical part, it may increase the vibration and enhance the noise. Therefore, when hydraulic shock noise occurs, it is usually accompanied by system vibration.
- Mechanical noise: The mechanical noise emitted by Rexroth pilot-operated relief valve generally comes from the impact of parts and the friction of parts caused by processing errors. the high-frequency vibration of the main valve and the pilot valve. Its occurrence rate is related to factors such as the configuration of the return oil pipeline, flow rate, pressure, and oil temperature (viscosity). Generally, the smaller the pipeline diameter, the lower the flow rate, the higher the pressure, and the lower the oil viscosity, the higher the occurrence rate of self-excited vibration. 4WRSE 10 V80-3X/G24K0/A1V (18-20 weeks, 4-5 months supply);
- Rexroth pump A10VSO 71DRS/32R-VPB22U99 (in stock);
- Rexroth solenoid proportional valve 3DREP6A-2X/45EG24N9K4/M (18-20 weeks, 4-5 months supply);
- Rexroth safety valve DBDS 20K1 valve M-3SED6U-1X/315CG24N9K4 (in stock). Two AC solenoid valves (4WE6C62/EW230N9K4, 2 in stock) are available. Two AC solenoid valves (4WE10D33/CW230N9K4, 2 in stock) are also available. version) is also in stock (18-20 weeks, 4-5 months). A Rexroth 4WE 6 C62/EG24N9K4 solenoid valve is also in stock. A Rexroth ZDBK 6VA2-11/210V throttle valve (upgraded to ZDB6VP2-4X/200V) is also in stock. 4WRAE 10 E60-22/G 24N9K31/A1V solenoid valve is also in stock (18-20 weeks, 4-5 months). A Rexroth 4WE 6 D62EG24N9K4 solenoid valve is also in stock. 16-18 weeks Rexroth solenoid valve 4WE 6 E62/EG24N9K4 In stock 2-position 5-way solenoid valve 577-660-022-0 8-10 weeks Rexroth proportional valve 4WRSE 10 V1-80-3X/G24K0/A1V 18-20 weeks 4-5 months Rexroth enlarged version VT-VRPA1-51-11 16-18 weeks Rexroth piston pump PV7-1X/10-20RE01MCO-10 In stock Rexroth solenoid valve R900561270 3WE 6 B6X/EG24N9K4 In stock Rexroth solenoid valve R900561286 4WE 6 H6X/EG24N9K4 Rexroth throttle valve R900409898 ZDB 6 VP2-4X/315V in stock;
- Rexroth piston pump A2FO160/61R-PBB05 in stock;
- Rexroth hydraulic valve HSZ10A490-4X/AB-B05G24-3AK4V00 in stock (18-20 weeks);
- Rexroth piston pump PV7-1X/10-14RE01C0-16 in stock;
- Rexroth pressure relay HED80H1X/200K14 upgraded to HED8OH-2X/200K14 in stock;
- Rexroth throttle valve Z2FS6-2-4X/2Q (for Z2FS6-2-4X/2QV) in stock;
- Rexroth solenoid valve 4WE6D6X/EG24N9K4 in stock;
- Rexroth solenoid valve 4WE6EB-6X/EG24N9K in stock. Rexroth solenoid valve ZDB6VP2-4X/200 (general use): ZDB6VP2-4X/200V (in stock) Rexroth solenoid valve WE6D6X/EG24N9 (complete model number): 4WE6D6X/EG24N9K4 Rexroth hydraulic valve ZDREE10VP2-2X/200XLMG24K31/A1M (in stock) 18-20 weeks, 4-5 months Rexroth proportional valve DBW20B1-52/315-6 EG24N9K4 Rexroth proportional valve 0811404114 4WRBA6E30-2X/G24N9Z4/M (in stock) 18-20 weeks, 4-5 months
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| Brand Name: | Rexroth | Certification: | ISO9001, CE |
|---|---|---|---|
| Place of Origin: | China | Condition: | New |
| Warranty: | 1 year | Customized sourcing: | available |
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Upgrade Rexroth relief valve DBDS10K1C/100 to DBDS10K18/
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