R900423729 DBDS6P1X/200 Direct acting plug-in overflow valve from Rexroth, Germany
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Parameter Category |
Parameter |
Specification |
|---|---|---|
|
General Information |
Manufacturer / Model |
Rexroth (Germany), DBDS6P1X/200 |
|
Part Number |
R900423729 |
|
|
Valve Type |
Direct-Acting Pressure Relief Valve (Poppet Type) |
|
|
Performance Parameters |
Nominal Size |
NG6 |
|
Max. Operating Pressure |
400 bar (Body Rating) |
|
|
Pressure Setting Range |
Up to 200 bar (Spring Code /200) |
|
|
Max. Flow Rate |
50 L/min |
|
|
Function |
Normally Closed (P→T opens at set pressure) |
|
|
Mechanical Interface |
Mounting Style |
Subplate Mounting (ISO 4401-03) |
|
Port Connection |
G1/4" (Internal Thread) |
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|
Adjustment Type |
Hexagonal Bushing with Protective Cap |
|
|
Weight |
Approx. 1.6 kg |
|
|
Media & Environment |
Seal Material |
NBR (Standard) |
|
Compatible Fluids |
Mineral Oils (HL, HLP), HFC Water Glycol |
|
|
Operating Temperature |
-20°C to +70°C (Standard) |
|
|
Fluid Cleanliness |
ISO 4406 20/18/15 or cleaner |
| DBDH 10G1X/630 R900424189 |
| DBDH 10 P1X/100 R900423739 |
| DBDH 10 P1X/200 R900426901 |
| DBDH 10P1X/315 R900424186 |
| DBDH 20 K1X/25 R900427601 |
| DBDH 20 K1X/50 R900423028 |
| DBDH 20 K1X/100 R900424112 |
| DBDH 20G1X/50 R900424165 |
| DBDH 20G1X/100 R900424108 |
| DBDH 30 K1X/25 R900445875 |
| DBDH 30 K1X/50 R900424193 |
| DBDS 6 K1X/25 K900420245 |
| DBDS 6 K1X/50 R900423727 |
| DBDS 6 K1X/100 R900423723 |
| DBDS 6 K1X/200 R900423724 |
| DBDS 6 K1X/315 R900423725 |
| DBDS6K1X/400 R900423726 |
| DBDS6G1X/25 R900423718 |
| DBDS6G1X/50 R900423722 |
| DBDS6G1X/100 R900423717 |
| DBDS6G1X/200 R900423719 |
| DBDS6G1X/315 R900423720 |
| DBDS6G1X/400 R900423721 |
| DBDS6P1X/25 R900429414 |
| DBDS6P1X/50 R900423732 |
| DBDS6P1X/100 R900423728 |
| DBDS 6 P1X/200 R900423729 |
| DBDS6P1X/315 R900423730 |
| DBDS6P1X/400 R90Q423731 |
| DBDS 10 K1X/25 R900420276 |
| DBDS 10 K1X/50 R900424153 |
| DBDS 10 K1X/100 R900424147 |
| DBDS 10 K1X/200 R900424149 |
| DBDS 10 K1X/315 R900424150 |
| DBDS 10 K1X/400 R900424152 |
| DBDS 10 K1X/630 R900427601 |
| DBDS 10G1X/25 R900423743 |
| DBDS 10G1X/50 R900424745 |
| DBDS 10G1X/100 R900424738 |
| DBDS 10G1X/200 R900424140 |
| DBDS 10G1X/315 R900424742 |
| DBDS 10G1X/400 R900424744 |
| DDDS 10 P1X/25 R900426905 |
| DBDS 10 P1X/100 R900424155 |
| DBDS 10 P1X/315 R900424158 |
| DBDS 10 P1X/400 R900425660 |
| DBDS 15G1X/100 R900424162 |
| DBDS 15G1X/200 R900424163 |
| DBDS 15G1X/315 R900424165 |
| DBDS 20 K1X/25 R900422542 |
| DBDS 20 K1X/50 R900424205 |
| DBDS 20 K1X/100 R900424267 |
| DBDS 20 K1X/315 R900424271 |
| DBDS 20 K1X/400 R900424203 |
| DBDS20G1X/25 R900422544 |
| DBDS20G1X/50 R900424276 |
| DBDS20G1X/100 R900424170 |
| DBDS20G1X/200 R900424172 |
| DBDS20G1X/315 R900424174 |
| DBDS 20 P1X/100 R900424274 |
| DBDS 20 P1X/200 R900424277 |
| DBDS 20 P1X/315 R900424278 |
| DBDS25G1X/25 R900433929 |
| DBDS25G1X/100 R900424263 |
| DBDS25G1X/200 R900424264 |
| DBDS25G1X/315 R900424265 |
| DBDS 30 K1X/25 R900422543 |
| DBDS 30 K1X/50 R900424282 |
| DBDS 30 K1X/100 R900424284 |
| DBDS 30 K1X/200 R900424286 |
| DBDS 30 K1X/315 R900424288 |
| DBDS30G1X/25 R900427243 |
| DBDS30G1X/50 R900424262 |
| DBDS30G1X/100 R900423763 |
| DBDS30G1X/200 R900424281 |
| DBDS30G1X/315 R900424261 |
| DBDS 30 P1X/25 R900429711 |
| DBDS 30 P1X/200 R900423714 |
FAQ - Frequently Asked Questions
Q1: What is the difference between DBDS6P1X and DBDS6K1X?
A: The "P" in the model code indicates Subplate Mounting (ISO 4401 interface), while "K" indicates a Screw-in Cartridge design. The DBDS6P1X is a complete valve assembly with a body and ports, whereas the DBDS6K1X is a cartridge that inserts into a custom manifold block.
Q2: Can I adjust the pressure beyond 200 bar?
A: No. The "/200" suffix denotes the 200 bar pressure stage spring. Although the valve body can withstand up to 400 bar, the spring is calibrated for a maximum reliable setting of 200 bar. Attempting to exceed this will result in inaccurate pressure control and potential spring damage.
Q3: Is this valve suitable for water glycol (HFC) fluids?
A: Yes. The standard NBR seals used in this model are compatible with HFC water glycol fluids. However, for phosphate ester (HFD) fluids, a variant with FKM (Viton) seals (typically denoted by a /V suffix) is required.
Q4: Why is my valve leaking or not holding pressure?
A: Common causes include:
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Contamination: Dirt or debris preventing the poppet from sealing. Ensure ISO 4406 20/18/15 cleanliness.
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Damaged Seal: Check for worn or extruded NBR seals.
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Over-tightening: Excessive torque on the adjustment mechanism can damage internal components.
Q5: What is the effect of backpressure at the T (tank) port?
A: Backpressure is fully additive. Any pressure at the T-port is added to the spring setting. 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 does not exceed the valve's maximum rating.
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