Pumps for corrosive, viscous and process liquids.
Compare chemical transfer pumps and metering pumps for process liquids and controlled dosing. Review centrifugal, sump, progressive cavity and diaphragm arrangements using the liquid composition, viscosity, temperature, required flow and discharge pressure.
Start with the liquid and installation: single-screw, pulp, end-suction, lined, sump and petrochemical designs address different process requirements.
ALG
ALG is a single-screw progressive cavity pump. Its eccentric rotor and fixed stator form cavities that move liquid from inlet to outlet. Review viscosity, solids, temperature and stator compatibility for the required duty.
AJY
AI-generated illustration · Confirm the actual AJY arrangement.
AJY addresses pulp, syrup and selected effluent-transfer duties. Fibre content, concentration and viscosity describe the liquid more usefully than an industry name alone.
QIH
QIH is a single-stage end-suction pump for suitable corrosive liquids with physical properties close to water. Wetted materials and seals are selected for the actual chemical and temperature.
QFB
QFB combines a metal load-bearing structure with fluoroplastic lining for corrosive-liquid transfer. The complete wetted-material system must suit the process liquid.
HYF/FYS
HYF/FYS places the pumping end in the liquid in a vertical sump arrangement. The series uses fluoroplastic material routes for suitable chemical duties, with the operating liquid level forming part of the installation.
QDY
QDY uses a horizontal, radially split multistage arrangement for high-head process duties. Applications include petrochemical transfer and injection where the operating and seal-system requirements are defined for the selected version.
QYA/QYE/QYF
QYA, QYE and QYF are single-stage process-pump versions for petrochemical duties. Their individual construction and operating limits remain part of the model-specific technical review.
Compare the series against the same operating duty. The catalogue links lead to model information; the table below is a selection guide.
| Series | Typical uses | What to check | Data source |
|---|---|---|---|
| ALG | environmental services, oil, food, papermaking, chemical processing | flammability, toxicity, crystallisation and volatility; design pressure and temperature; seal and flushing requirements; applicable process standard | Catalogue ↗ |
| AJY | papermaking, sugar processing, wastewater treatment | flammability, toxicity, crystallisation and volatility; design pressure and temperature; seal and flushing requirements; applicable process standard | Catalogue ↗ |
| QIH | chemical processing, petroleum, metallurgy, pharmaceutical processing | flammability, toxicity, crystallisation and volatility; design pressure and temperature; seal and flushing requirements; applicable process standard | Catalogue ↗ |
| QFB | acid transfer, organic-solvent transfer, chemical-media transfer | flammability, toxicity, crystallisation and volatility; design pressure and temperature; seal and flushing requirements; applicable process standard | Catalogue ↗ |
| HYF/FYS | chemical processing, pharmaceutical processing, metallurgy, environmental services | flammability, toxicity, crystallisation and volatility; design pressure and temperature; seal and flushing requirements; applicable process standard | Catalogue ↗ |
| QDY | refining, petrochemical processing, coal chemical processing, boiler feed, water injection | flammability, toxicity, crystallisation and volatility; design pressure and temperature; seal and flushing requirements; applicable process standard | Catalogue ↗ |
| QYA/QYE/QYF | refining, coal chemical processing, offshore service, seawater desalination | flammability, toxicity, crystallisation and volatility; design pressure and temperature; seal and flushing requirements; applicable process standard | Catalogue ↗ |
Chemical compatibility concerns every wetted part. The liquid description also needs to cover viscosity, solids and any change between normal operation, cleaning and startup.
Series information and available model references.
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