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Grundfos pressure relief valves

Grundfos pressure relief valves is a pressure relief valves for dosing systems for chemical dosing and fluid-transfer systems where the discharge line requires protection against excessive pressure. It provides a defined Grundfos platform for demanding B2B process and utility duties. Request a quote for Grundfos pressure relief valves from AxFlow.

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Product features

  • Automatic opening above the set pressure → Helps protect the pump and downstream equipment from overpressure.
  • Pressure-relief function → Protects the pressure side against excessive pressure buildup.
  • Return connection for relieved liquid → Provides a defined path back toward the supply side.
  • Adjustable pressure setting → Allows the valve to be matched to dosing-system requirements.
  • Maintains a defined minimum backpressure → Improves dosing stability where downstream resistance is low or variable.
  • Close-coupled construction → Reduces alignment requirements and installation footprint.
  • Predefined service kits → Groups routine wear parts for planned maintenance.
  • Backpressure function → Helps maintain stable hydraulic conditions for accurate dosing.
  • Deaeration and drain functions → Simplify priming and maintenance tasks.
  • Purpose-matched signal and control connections → Reduces wiring ambiguity during installation and service.

Product description

Grundfos pressure relief valves is a pressure relief valves for dosing systems used for chemical dosing and fluid-transfer systems where the discharge line requires protection against excessive pressure. It is relevant where reliable hydraulic or dosing performance, predictable operating conditions and maintainable equipment are important to process continuity. AxFlow supplies Grundfos equipment and can support selection for the required duty.

The valve opens when discharge pressure exceeds the selected setting and diverts excess liquid through a return connection. This protects the dosing pump and pressure-side components when a downstream line is blocked or a valve is closed. The construction should be selected against the actual liquid, system curve, installation and control requirements so that the technical advantages translate into stable operation.

Grundfos pressure-relief accessories are available with in-line installation and return-port arrangements; exact set pressure, materials and connection sizes must be selected for the dosing pump and chemical. These values describe the published series scope rather than a universal duty point, so the exact model, materials, pressure class and accessories must be verified for the application.

A correctly selected relief valve reduces the risk of pressure-related damage and gives maintenance teams a defined protective function that can be inspected as part of the dosing-system service plan. This supports maintenance planning, reduces the risk of mismatched components and helps control downtime and lifecycle cost. Contact AxFlow for product selection, availability and a quote.


Grundfos pressure relief valves is used for chemical dosing and fluid-transfer systems where the discharge line requires protection against excessive pressure. It is relevant where stable, technically controlled operation is important. AxFlow can help confirm whether the series fits the intended duty.
Selection should verify flow or capacity, pressure or head, liquid properties, temperature, materials, connections and required control functions. Published limits vary by size and configuration. The final duty point should therefore be checked against the selected Grundfos variant.
The valve opens when discharge pressure exceeds the selected setting and diverts excess liquid through a return connection. This gives the series a defined technical role rather than a generic pumping function. The practical benefit depends on matching the configuration to the process.
Start with the required duty point and the liquid or chemical to be handled. Then confirm materials, connections, motor or control requirements and any accessories needed for installation. AxFlow can support model selection and availability checks.
AxFlow can support product selection, service planning and spare-parts identification for compatible Grundfos equipment. Exact parts and service intervals depend on the installed model and operating conditions. Provide the pump or valve identification when requesting support.
UAB AxFlow