Submersible Pump Types, Applications, and Selection Guide Part-2

Author: Rick Wong

Reading Time: 3 minutes

Common Types of Submersible Pumps

Selecting the right submersible pump begins with understanding the major types and their intended applications.

1. Clean Water Submersible Pump

Typically made from cast iron or 304 stainless steel, these pumps are ideal for wells, clean water tanks, landscape ponds, and water circulation systems.

2. Sewage Submersible Pump

Designed with a wide-flow impeller to pass small solids, they are commonly used for domestic wastewater, construction dewatering, light sludge, and rainwater pits.

3. Grinder Sewage Pump

Equipped with hardened cutting blades that shred solid waste before pumping, these pumps are well suited for septic tanks, livestock farms, and sewage containing cloth, paper, or fibers.

4. Corrosion-Resistant Chemical Submersible Pump

Manufactured from 304/316 stainless steel, PP, or PVDF, these pumps handle mild acids, mild alkalis, electroplating rinse water, industrial wastewater, and pure water circulation.

5. Deep Well Submersible Pump

With a multi-stage vertical design for high-pressure performance, these pumps are widely used for deep groundwater extraction, municipal water supply, irrigation, and high-rise building water systems.

Typical Applications

Submersible pumps are used across a wide range of industries, including:

• Construction & Municipal: Basement drainage, site dewatering, sewage lift stations, and stormwater pumping.
• Residential: Sump pits, septic tanks, and landscape ponds.
• Water & Wastewater Treatment: Wastewater transfer, sludge handling, and reclaimed water systems.
• Agriculture & Aquaculture: Irrigation wells, fish ponds, and livestock waste removal.
• Mining & Industry: Mine drainage, equipment sumps, and cooling water circulation.
• Electroplating & Chemical Processing: Rinse water transfer and chemical collection pits using corrosion-resistant models.

Installation & Operating Tips

For reliable, long-term operation:

• Keep the pump fully submerged—never allow dry running.
• Prevent large rocks or metal debris from entering the inlet.
• Choose corrosion-resistant materials for chemical service.
• Protect the power cable from crushing or excessive tension.
• Clean and dry the pump before long-term storage.
• Install overload and leakage protection devices.
• Inspect mechanical seals regularly when handling abrasive liquids.

Quick Selection Guide

Final Thoughts

Submersible pumps provide a compact, efficient, and dependable solution for transferring liquids from below ground or beneath the water surface. Their self-priming operation, simple installation, and low maintenance make them suitable for everything from household drainage to industrial wastewater systems.

For the best performance and service life, select a pump based on flow rate, head, solids content, chemical compatibility, and installation depth. Choosing the right design and material ensures reliable operation, even in demanding environments.