Suction Lift vs Flooded Suction

Comparison between the DICE™ DS and DICE™ DM

Suction Lift

An application with suction lift is defined by a tank fluid level that is lower than the pump inlet. Suction is required to draw fluid from the chemical tank. 

Both DICE™ DS and DM models are suited for suction lift applications. 

DICE™ DS Chemical Dosing Module
DICE™ DM Chemical Dosing Module

DICE™ DS

DICE™ DM

Flooded Suction

An application with flooded suction is defined by a tank fluid level that is higher than the pump inlet. The pump inlet therefore has constant positive pressure.

Depending on the fluid level inside the tank you could either be in the presence of a flooded suction (example when the tank is full) or a suction lift (example when the tank is near empty).

The DICE™ DM is suited for flooded suction applications. 

DICE™ DM Chemical Dosing Module

P&ID

DICE™ DS

DICE™ DM

Emptying the Calibration Column

The DICE™ DS and DM models can be used to perform a pump calibration. How the calibration column is drained depends on the configuration. 

After performing a pump calibration with a suction lift application, the column is emptied and sent back to the chemical tank located under the system, using gravity.

Pump Calibration with a Suction Lift Application

In the case of a pump calibration with a flooded suction application, the column content is drained with the pump. This configuration also allows doing a drawn down calibration of the pump if required.

The Pressure Relief

In the case of a blocked pipe, a blocked injection quill or simply a closed isolation valve, the pressure relief valve will open. It will cycle back the excess pump fluid to the chemical tank or directly to the pump suction depending on the configuration. This will prevent the system from over pressurizing.

With the DICE™ DS suction lift configuration, the pressure relief valve is routed back directly to the chemical tank. Therefore, the excess pump fluid is cycled back to the tank.

Pressure Relief with Suction Lift Application

With the DICE™ DM flooded suction configuration, the pressure relief valve can be routed and looped directly to the pump inlet. This allows the installation to only have one feed line coming from the storage tank.

Pressure Relief with Flooded Suction Application

About the DICE™ Dosing Modules

Learn more about the DICE™ DS and DM features and technical informations. 

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