Grundfos multi-function valves

Grundfos multi-function valves combine four dosing-system functions in one compact valve unit: backpressure, pressure relief, deaeration and drain. They are designed for compatible dosing pumps where discharge-side protection and stable hydraulic conditions are required. AxFlow can help confirm valve materials and compatibility. Request a quote for Grundfos multi-function valves from AxFlow.

Let us help you find the right product from this series

Key product features

Four functions in one valve → Reduces the number of separate discharge-side accessories.
Backpressure function → Maintains the pressure needed for stable dosing when system resistance is too low.
Pressure-relief function → Protects the dosing line from excessive pressure buildup.
Deaeration function → Supports pump priming and removal of trapped gas.
Drain function → Allows pressure-side piping to be emptied for service work.
Two-diaphragm construction → Provides the defined internal design used by the Grundfos multi-function valve.
Direct mounting on the pump discharge valve → Simplifies piping around compatible dosing pumps.
Verified use up to 60 l/h → Defines the published capacity scope for applicable dosing pumps.
Depressurization function up to 10 bar in AxFlow accessory data → Defines a verified pressure reference for applicable versions.
Multiple body and seal material options → Supports chemical-compatibility selection for different dosing media.

Product Description

Info

A multi-function valve is relevant when a dosing system needs several discharge-side functions but plant space and service simplicity favour one compact accessory. AxFlow describes the valve as combining pressure loading, pressure relief, deaeration and drain. This is especially useful where the process does not provide enough backpressure or where the pressure-side dosing line needs protection against excessive pressure.

The Grundfos multi-function valve uses two diaphragms and is mounted directly on the pump discharge valve. It maintains the backpressure required by the dosing pump when system resistance is insufficient, relieves excessive pressure, and provides paths for deaeration and draining of the pressure-side piping. Combining these functions reduces the number of separate accessories around the pump.

AxFlow states that the valve is intended for dosing pumps up to 60 l/h. AxFlow accessory data also lists multifunction valves for pump degassing and depressurization up to 10 bar, with PE or PVDF body materials, PP or PVC connection materials and FKM, EPDM or PTFE sealing options. Exact compatibility must be confirmed for the chemical and pump version.

Combining four functions in one directly mounted valve can reduce piping complexity and the number of separate components that must be installed, inspected and replaced. The integrated deaeration and drain functions also support commissioning and maintenance work on the pressure side. Correct material selection remains essential because chemical attack can shorten component life and increase downtime risk.

What is the intended use of Grundfos multi-function valves?

The Grundfos multi-function valves range is used for chemical dosing systems that require backpressure, pressure relief, deaeration and drain functions at the pump discharge. It is relevant where the verified construction and operating range match the process duty. AxFlow can help confirm whether the selected configuration fits the application.

Which technical data should be checked before selecting Grundfos multi-function valves?

Selection should verify dosing-pump capacity, discharge pressure, required backpressure, chemical compatibility, valve body material, seal material and direct-mount connection. Published limits apply to specific sizes and configurations rather than every variant. The final choice should therefore be checked against the selected Grundfos product data.

What technically distinguishes Grundfos multi-function valves?

Grundfos multi-function valves is distinguished by the combination of backpressure, pressure relief, deaeration and drain functions in one directly mounted two-diaphragm valve. This defines how the product performs its intended role in the system. The practical benefit depends on matching the configuration to the actual process conditions.

How do I choose the correct Grundfos multi-function valves configuration?

Start with the required process duty and the liquid or chemical to be handled. Then confirm dosing-pump capacity, discharge pressure, required backpressure, chemical compatibility, valve body material, seal material and direct-mount connection. AxFlow can support product selection and availability checks for the identified configuration.

Can AxFlow support service and spare parts for Grundfos multi-function valves?

AxFlow can support product identification, service planning and spare-parts selection for compatible Grundfos equipment. Exact parts and service intervals depend on the installed model, materials and operating conditions. Provide the pump or accessory identification when requesting support.

SIA AxFlow

Phone: +37167553750

pump@pump.lv

SELECT LANGUAGE