GNWQ Cutting Submersible Sewage Pump50GNWQ15-25-4S Stainless High-Head Cutter Pump
The 50GNWQ15-25-4S combines SS304 corrosion resistance with 25 m of head — for lifting shredded, aggressive effluent through small lines. 15 m³/h, 4 kW

Model: 100GNWQ100-15-7.5S
The 100GNWQ100-15-7.5S is a precision-cast SS304 cutter sewage pump for salty, acidic or food-processing effluent that rusts cast iron. 100 m³/h, 15 m, 7.5 kW.
| Flow Rate | 100m³/h |
|---|---|
| Head | 15m |
| Power | 7.5kW |
| Inlet / Outlet Diameter | 100mm |
| Material | Cast Iron,SS304 |
Cast iron is the right, economical choice for ordinary sewage. But put it in salt water, acidic wash-down, or food-plant effluent full of brine and organic acids, and it corrodes — sometimes within a season. That’s the moment to move to stainless.
The 100GNWQ100-15-7.5S is precision-cast in SS304 throughout, so the whole wetted path resists corrosion, not just the visible surfaces. It handles 100 m³/h at 15 m head on a 7.5 kW motor through a 100 mm outlet, and keeps the same 48 HRC alloy cutting system as our cast-iron line — so it still shreds packaging, gloves and fibrous waste, the things that block food and processing drains.
A seafood processing plant in Thailand was replacing carbon-steel pumps almost yearly thanks to brine. A Haquan GNWQ-S stainless cutter pump ended the cycle — three seasons in the same pit with only routine seal service.
If your effluent is corrosive, salty or food-grade, cast iron is a false economy. Ask us about the GNWQ-S stainless range at sales@haquanpump.com.
GNWQ Cutting Submersible Sewage PumpThe 50GNWQ15-25-4S combines SS304 corrosion resistance with 25 m of head — for lifting shredded, aggressive effluent through small lines. 15 m³/h, 4 kW
GNWQ Cutting Submersible Sewage PumpAt 300 m³/h the 200GNWQ300-15-22 is the largest GNWQ cutter sewage pump — a 22 kW, 200 mm workhorse for municipal pumping stations and large drainage.
GNWQ Cutting Submersible Sewage PumpThe 80GNWQ35-12-2.2 is a 2.2 kW, 80 mm cutter sewage pump built for farm and livestock slurry — its alloy cutter disc handles straw, bedding and manure fibre without clogging.