HFM back suction corrosion resistant press filter pump

High-reliability back-suction pressure filter pump engineered for corrosive and abrasive slurries. The HFM series combines a unique structural design and optimized sealing system to deliver 2–3× longer seal life than comparable pumps, making it especially effective for pressure-fed filter presses and high‑pressure spray‑circulation applications.

Key features

• Corrosion and wear resistant design for reliable handling of corrosive liquids and slurries up to 100°C.
• Two-stage option reduces impeller linear velocity to 22–28 m/s (vs. ~35–40 m/s for single-stage), producing outlet pressures in the 0.8–1.0 MPa range while greatly improving wear life under the same duty.
• Robust sealing suited to sustained high‑pressure operation; ideal where conventional pumps are prone to leakage or rapid seal failure.
• Available in single‑stage and two‑stage configurations to match small-flow/high-pressure and standard pressure requirements.

Typical applications

• Filter press feed and pressure‑feeding duties in non‑ferrous metal smelting (zinc, copper, cobalt, nickel, manganese, etc.)
• Mining and mineral processing slurries
• Non‑metallic mineral processing (titanium dioxide, kaolin)
• Sludge and waste residue transfer in environmental protection systems
• Long‑term high‑pressure duties such as flue gas desulfurization (FGD) pressure spray and pump‑flushing systems
• Processes where medium leakage is a concern for other pump types

Operating limits and notes

• Suitable for corrosive liquids and slurries with temperatures up to 100°C.
• Not suitable when the suction inlet liquid level is less than 0.5 m or when excessive negative suction pressure exists; ensure adequate Net Positive Suction Head (NPSH) margin.

Model example

• HFM series (example model: 50HFM-I). For selection, provide required flow, discharge pressure, slurry concentration/particle size, temperature, and suction conditions so the correct stage/configuration and materials of construction can be recommended.