Rexroth Pressure Control Valve Applications & RFQ | Nabor

Choosing a https://www.naboer.com.cn/bosch-rexroth-valve.html starts with the pressure function the circuit actually needs. A relief valve that limits maximum pressure, a reducing valve that maintains a lower downstream pressure, and an electrically controlled proportional pressure valve may all sit under the same broad category, but they solve different machine problems.

For purchasing teams, the practical task is to describe the pressure function first, then confirm the pressure range, expected flow, mounting, pilot or drain arrangement, fluid and control method. That produces a quotation that engineering can review instead of a model guess based on one catalogue value.

Define the pressure-control function before the model

• Pressure relief: limits pressure by opening a path when the set pressure is reached.

• Pressure reducing: maintains a lower pressure in a downstream branch of the circuit.

• Sequence control: uses pressure as a condition for allowing a later hydraulic function to begin.

• Proportional pressure control: changes the pressure command electrically during the machine cycle.

If the requirement is still a general valve-selection question, use the https://www.naboer.com.cn/news/new-648-173.html. This article stays narrower and focuses on pressure-control decisions and RFQ data.

Use the part number to understand the architecture

The newly organized Nabor model list contains several pressure-control references that illustrate why a complete material number is useful. R900424158 DBDS10P1X/315 is a direct-operated DBDS pressure relief configuration; published product data lists Size 10, a 315 bar pressure rating and up to 120 L/min for that exact configuration.

The same list also includes R900941174 DBW10A1-5X/200-6EG24N9K4, which adds an electrically controlled unloading stage to a pilot-operated pressure-relief arrangement. By contrast, R900409958 ZDB10VP2-4X/315V uses a sandwich-plate architecture. Published data for this ZDB configuration lists Size 10, a 315 bar maximum operating pressure and 100 L/min maximum flow.

Those examples should not be treated as interchangeable simply because they all manage pressure. The circuit function and mounting arrangement determine whether the family is even relevant before pressure and flow are compared.

Pressure range and flow must be reviewed together

A pressure setting answers only part of the selection question. Buyers should also record normal working pressure, required setting or adjustment range, maximum expected flow and what happens on the return or tank side of the valve. Back pressure can influence effective pressure behavior in some arrangements, so a supplier should not be asked to confirm suitability from a single pressure number.

For a new design, provide the relevant hydraulic schematic. For a replacement, add the installed material number, nameplate photo and any known pilot or drain connections. If the project needs a broader review of flow, pressure drop and nominal size, the https://www.naboer.com.cn/news/new-153-424.html covers that handoff in more detail.

Check mounting, pilot and drain details

• Cartridge, subplate, sandwich or threaded connection

• Nominal size and connection diagram

• Pilot oil supply: internal or external where applicable

• Pilot oil return or drain arrangement

• Adjustment method and required pressure range

• Hydraulic fluid, seal material and operating temperature

• Electrical voltage and connector for solenoid-operated or proportional versions

This is especially important for sandwich pressure valves such as ZDB families, where the pressure-control path through P, A or B must match the manifold function rather than simply the physical size.

Nabor pressure-control references from the current model list

These models are included as technical references from Nabor’s current organized product list. Availability and exact suitability should be confirmed for the required part number and circuit before ordering.

Rexroth pressure control valve RFQ checklist

FAQ

Is a Rexroth pressure relief valve the same as a pressure reducing valve?

No. A relief valve limits pressure by opening a relief path, while a reducing valve maintains a lower downstream pressure in a branch. Their circuit roles are different.

Can I select a pressure valve from the pressure rating alone?

Usually not. Flow capacity, pressure range, mounting, pilot or drain arrangement, fluid and control method can all change the suitable configuration.

What should I send if the original part number is unreadable?

Send nameplate and installation photos, the hydraulic schematic, required pressure function, working pressure, expected flow, mounting information and any electrical data.

Why should a quotation identify assumptions?

Because pressure-control behavior depends on the actual circuit. Marking assumptions prevents an estimated pilot, drain or pressure condition from being mistaken for a confirmed requirement.

Prepare the RFQ around the actual pressure function

The best way to narrow a https://www.naboer.com.cn/bosch-rexroth-valve.html inquiry is to define what the pressure should do in the circuit, then provide the operating range, flow, mounting and control information. Use a complete part number when one is available, but do not let the model code replace a review of the current machine conditions.

Reference: https://buyrexroth.com/product/bosch-rexroth/r900424158

Reference: https://www.hydrotech.com/product/bosch-rexroth/r900941174