Self-Priming Pump
A horizontal single-stage single-suction self-priming centrifugal pump built to GB5656, reaching 800 m³/h, 70 m head, 1.6 MPa and a 6.5 m self-priming lift for unloading and transferring sulfuric, nitric and phosphoric acids in chemical, power and wastewater plants.
Selection support
- Share flow rate, pressure, medium, temperature and material requirements.
- We can support pump selection, dosing package configuration and spare parts matching.
- Detailed English datasheets and quotations are available for priority models on request.
Technical details
This self-priming pump is a horizontal single-stage single-suction centrifugal pump manufactured to the GB5656 standard. It is designed using an advanced imported hydraulic model and self-priming pump structure, offering high efficiency, excellent self-priming performance, smooth running and long service life.
Main applications:
Suitable as an unloading pump and underground-storage-tank transfer pump for strongly corrosive media such as sulfuric acid, nitric acid and phosphoric acid.
Mainly used in:
- Chemical and petrochemical industries
- Storage and transport of sulfuric acid, nitric acid, etc.
- Power plants
- Wastewater treatment
- Paper and pulp production
Performance:
| Parameter | Value |
|---|---|
| Flow rate | up to 800 m³/h |
| Head | up to 70 m |
| Working temperature | up to 130°C |
| Working pressure | up to 1.6 MPa |
| Self-priming lift | up to 6.5 m |
Working principle:
This is an external-mixing self-priming pump. The pump body contains a liquid-storage chamber (chamber A), a gas-water separation chamber (chamber B) and a return port. During operation, the impeller uses the liquid in the storage chamber to draw the gas in the inlet pipe into the pump and separate it from the liquid in the gas-water separation chamber, with the gas discharged through the pump outlet. Once a certain vacuum is reached in the inlet pipe, the liquid is drawn up. The pump uses a back-pull-out design, so the inlet and outlet pipes need not be removed during maintenance. The impeller uses balancing holes to offset axial thrust, and the shaft seal can be either gland packing or various single or double mechanical seals.
