Chemical Processing • Metering • Dosing

Progressive Cavity Pumps for Chemical Metering & Dosing

Repeatable positive-displacement feed for polymers, viscous additives and selected process chemicals requiring controlled flow and useful turndown.

Controlled Chemical Feed

Capacity control through positive displacement

Progressive cavity pumps can provide repeatable chemical feed where viscosity, shear sensitivity or solids make conventional dosing equipment less suitable. Pump capacity is adjusted through operating speed, allowing controlled delivery across a defined range when the pump and drive are correctly sized.

PolymersViscous and selected shear-sensitive solutions
AdditivesControlled process-chemical addition
InjectionPositive displacement against line pressure
VFD controlAdjustable feed over the operating range
Selection Framework

Define both ends of the dosing range

Selection should include the minimum stable feed requirement as well as maximum capacity and pressure. Chemical composition, concentration and temperature determine wetted-material compatibility, while viscosity and suction conditions influence cavity filling at higher speeds.

Feed rangeMinimum through maximum required flow
PressureInjection-point and downstream resistance
ViscosityAt actual process temperature
ControlVFD range and process signal
MaterialsElastomer, seal and metallurgy compatibility
ProtectionDry-run and overpressure safeguards

Need a chemical metering or dosing pump?

Send chemical identity, concentration, feed range, pressure, viscosity, temperature and required control method.

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