Types of Sewage Pumps – Where the WQK20-7QG Fits In

There are basically three types of sewage pumps people talk about: solids-handling pumps, grinder pumps, and cutting pumps. The WQK20-7QG falls into the third category. It’s not a grinder — grinders use high-speed rotating plates to pulverize solids into fine slurry. Cutting pumps use a blade to slice through fibrous material without reducing everything to mush.

How the WQK20-7QG Compares

Pump Type	Solids Handling	Power Use	Best For
Solids-handling	Large passages	Moderate	Low-fiber wastewater
Grinder	Fine grinding	High	Pressurized systems
Cutting (WQK20-7QG)	Chopping fibers	Low-Medium	High-fiber content

Real Talk About Performance
The WQK20-7QG delivers 20 m³/h at 7 meters head. That’s enough for most small to medium jobs — apartment buildings, small factories, commercial kitchens. The 50 mm outlet is standard and easy to connect. The 0.75 kW motor keeps electricity costs down.

When You Shouldn’t Use It
If your wastewater has high sand or grit content, skip the cutting pump. The abrasive particles will wear down the blades quickly. In that case, look at vortex-type pumps instead.

Applications Summary:​
apartment drainage, commercial kitchens, small factories, light industrial, restaurant wastewater

Thanks for reading from HAQUANPUMP. Understanding the different types of sewage pumps helps you make the right choice. If you’re unsure, send us your application details and we’ll point you in the right direction.