Grinder Pumps
Shred, then pump: sewage grinder pumps that push wastewater through small-bore pressure piping and long, high lifts.
Do I need a grinder pump or a non-clog pump?
Choose a grinder pump when wastewater has to travel through small-diameter pressure piping or climb a long, high lift, because grinding the solids into a slurry lets the flow move through pipe that a non-clog pump could not use. For a normal gravity run or a short pressure line into full-size piping, a solids-handling non-clog pump is simpler and cheaper to run. Tell us the discharge line and the head and we will confirm the fit.
How a grinder pump works
A grinder pump adds a cutting mechanism at the inlet that shreds rags, solids, and debris into a fine slurry before the impeller pumps it. That slurry flows through small-diameter pressure sewer piping and up high lifts that a gravity system cannot serve. The trade for that capability is a motor that works harder and a cutter that wears, so grinder pumps draw more power and need cutter attention that a plain non-clog pump does not.
When a grinder pump is the right tool
- Pressure sewer service where small-bore piping replaces expensive gravity mains.
- Homes or buildings below the sewer main that must pump wastewater uphill.
- Long discharge runs where the head and distance rule out a standard pump.
- Duty with rags and stringy solids that would clog a non-cutting impeller.
Sizing and specification
- Total dynamic head. Grinder pumps often work against high head, so state static lift plus friction in the small-bore line honestly.
- Discharge pipe size. The whole reason for a grinder is small-diameter pressure piping, so confirm the line and the network.
- Debris and grit. Heavy grit accelerates cutter wear, which affects the model and the service plan.
- Duplex where critical. For shared or critical service, pair pumps so one backs up the other.
- Power and controls. Verify the electrical supply and level controls suit the higher-draw grinder motor.
Service and cutter wear
The cutter and the seals are the parts that decide a grinder pump service interval, so a drop in flow, rising current, or a change in sound is the signal to inspect them before the pump stalls. Grit and stringy debris wear cutters faster, and a dull cutter overworks the motor. Our factory-trained technicians service and rebuild grinder pumps, restoring the cutter and seals before a failure. Start at pump repair, or for station work see lift station repair.
Grinder pump lines available through Brabazon
We supply sewage grinder pumps from Tsurumi, Barmesa, and Power-Flo, with cutters, seals, and repair parts to keep them cutting.
Grinder pump questions, answered first
What does a grinder pump do?
A grinder pump shreds solids into a fine slurry before pumping it, so it can push wastewater through small-diameter pressure sewer piping over long distances and high lifts. The cutting mechanism at the inlet lets it handle the rags and debris that would clog a standard pump, and the slurry it produces flows easily through pipe that gravity sewer could not use. That combination is why grinder pumps are the choice for pressure sewer service.
Grinder pump or solids-handling pump: which do I need?
Choose a grinder pump when you must push wastewater through small-diameter pressure piping or up a long, high lift, and choose a solids-handling non-clog pump when you have a normal gravity or short pressure run into standard piping. The grinder buys you small-bore, long-distance discharge at the cost of higher power and cutter wear. If your discharge line is full-size and the run is short, a non-clog pump is simpler and cheaper.
Why is my grinder pump tripping or running hot?
A grinder pump that trips or runs hot is usually fighting a dull or jammed cutter, a clogged discharge, or a duty beyond its rating. The cutting mechanism draws high current when it binds on stringy debris or grit, and a restricted discharge makes the motor work against too much head. Inspecting and servicing the cutter, clearing the line, and confirming the pump is sized to the real head resolve most trips.
How often do grinder pump cutters need service?
Grinder pump cutter service interval depends on the debris and the run hours rather than a fixed schedule, because grit and stringy solids wear the cutting mechanism faster. A drop in flow, rising current, or a change in sound is the signal to inspect the cutter and seals. Our factory-trained technicians service and rebuild grinder pumps, so a worn cutter can be restored before it stalls the pump.
Talk to a Pump Engineer
Send the head, discharge line size, and debris and an engineer will confirm whether a grinder is the right tool, then quote it. We answer 24/7.
Request a grinder pump quote
Give us the application details and a pump specialist from your nearest branch will size and quote the right grinder pump. Or call 800.825.3222, answered 24/7.
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