Fqw Pneumatic Submersible Sewage Centrifugal Pump

A pneumatic submersible centrifugal pump designed for safe, reliable dewatering and sewage handling in underground mining and other hazardous, potentially explosive environments. The pump uses compressed air to drive a pneumatic turbine and a centrifugal impeller, providing a compact, intrinsically safe alternative to electric submersible pumps for locations with gas or coal dust.

Key benefits

• Intrinsically safer for explosive atmospheres: no electric motor in the submerged unit, suitable for mines with gas or coal dust.
• Low operating noise (≤ 40 dB) for improved site working conditions.
• Low air consumption and high pneumatic efficiency compared with conventional pneumatic pumps.
• Compact, lightweight and portable design for easy installation, movement and maintenance.
• Long service life with wear-resistant components and simple maintenance procedures.

Typical applications

• Sewage and sump drainage in underground coal and metal mines
• Emergency dewatering and pumping in explosive atmospheres
• Any confined or hazardous location where electric drives are not acceptable

Performance and operating limits (specifications provided by manufacturer)

• Drive: compressed air, pneumatic turbine
• Applicable air pressure range: 0.4 MPa to 0.7 MPa
• Maximum conveyed fluid temperature: ≤ 40 °C
• Ambient (working) temperature range: 5 °C to 40 °C
• Fluid pH range: 6–8
• Maximum solid particle diameter: ≤ 10 mm
• Maximum solid volume concentration: ≤ 2%

Installation and supply considerations

• When submerged, the liquid level must not exceed the joint between the muffler and the pump shell.
• Compressed air supply must meet required pressure and flow (specify 0.4–0.7 MPa and sufficient volumetric flow to achieve desired pump performance).
• Provide required duty point (flow and head) when ordering so the correct model and sizing can be confirmed.

Ordering notes

• The FQW/W series is offered as a pneumatic submersible centrifugal solution for mining drainage. For selection, request performance curves and model options matched to your required flow, head and site air supply.

This pump is optimized for hazardous underground environments where intrinsic safety, portability and low maintenance are priorities.