JS GS Heavy Duty Sewage Grinder Macerator Pump - GS1200, GS1500

JS GS Heavy-Duty Grinder Sewage Pumps – Powerful Maceration for the Most Demanding Wastewater Systems

The JS GS Series (GS1200 & GS1500) represents the ultimate in heavy-duty sewage pumping, built specifically for severe-duty applications where solids, fibrous waste, and tough debris are a constant challenge. These grinder/macerator pumps are engineered to shred and grind waste into fine particles, making them ideal for use in sewage systems, pumping stations, industrial effluent handling, and agricultural waste management.

The GS-1200 and GS-1500  by JS are a range of heavy duty sewage grinder/sewage macerator single phase submersible pumps ideal for use where high heads or long distances prevent the use of standard submersible pumps.

They include a heavy duty construction suitable for grinding and pumping organic waste to the main sewage line or treatment plant and are ideal if only a small bore discharge pipe is available.

Grind It, Don’t Just Pump It

Unlike standard sewage pumps, the GS Series features a hardened steel macerator blade that cuts, grinds, and pulverises solid matter before discharge—protecting your pipework, reducing clogging, and maintaining flow efficiency.

Perfect for:
🏭 Industrial and commercial effluent treatment
🏡 Remote or off-grid sewage systems
🚽 Domestic properties prone to blockages
🚧 Pumping stations and sewage lift systems
🚜 Agricultural and livestock slurry transfer

GS Grinder pumps have tungsten carbide cutters and grinding rings which allow for up to 28,000 cuts per minute.

In addition, all of the GS1200 and G1500 sewage grinder pumps include double oil bathed mechanical seals for reliability and longevity.  The GS range of sewage submersible macerator pumps are our toughest and most reliable choice for domestic and commercial sewage grinder applications.

Key Features & Benefits:

✅ Integrated Grinder Mechanism – High-torque blade shreds waste into fine slurry
✅ High Head Capability – Ideal for lifting sewage over long distances or elevations
✅ Robust Construction – Cast iron casing with stainless steel shaft and hardened cutter
✅ Manual or Automatic Options – Choose float switch control for hands-free operation
✅ 10m Cable as Standard – Easy installation in sumps or underground tanks

Hose tails are supplied with all models of the GS1200 and GS1500 sewage grinder pumps making the task of connecting onto existing pipework easy.  Furthermore, these pumps can be used on a guide rail system by purchasing the auto coupling kit which includes coupling foot, claw and top bracket.

Features

• Maximum Head: up to 25m
• Maximum Flow: up to 150 litres/min
• 1¼" outlet
• Manual or automatic with Mac-3 float
• 110V or 230V