Sewage Pump Guide: Submersible Cutter and Non-Clog Pumps, Solids Size, Head, Basement and Septic Uses, Float Switch, Pipe, Safety, Maintenance and Indicative Rates in Pakistan
A sewage pump lifts wastewater with solids from a basement, pit or septic tank to the sewer, and a normal water pump will clog and burn out in it, so the type and solids handling matter. Prices run from about PKR 20,000 to PKR 60,000 for common sizes. This page covers submersible cutter and non-clog pumps, solids size, head, basement and septic uses, float switch, pipe, safety, maintenance and rates in Pakistan. For general pumps see water pumps, deep well pumps and sanitary pipe.
Types
- Non-clog pump. A wide impeller passes solids of 35 to 50 millimetres.
- Cutter pump. Blades chop solids so small pipes can be used.
- Grinder pump. Heavy-duty for pressure sewers.
- Dirty water pump. For grey water and drainage, not for toilets.
Indicative rates
These ranges show common retail figures.
| Pump | Indicative range |
|---|---|
| Dirty water pump, 0.5 HP | PKR 12,000 - 25,000 |
| Non-clog sewage pump, 1 HP | PKR 25,000 - 50,000 |
| Cutter pump, 1.5 HP | PKR 35,000 - 70,000 |
| Control float switch | PKR 1,500 - 4,000 |
| Plumber and electrician | PKR 5,000 - 15,000 |
Prices move with brand, model, size and stock. Use these ranges to judge a quote, then compare the exact model and what is included.
Solids size and head
Check the maximum solids size, usually 35 to 50 millimetres, and the head, which is the vertical lift plus pipe losses. Choose a pump whose curve gives enough flow at your head. Pipe diameter must match, commonly 50 to 100 millimetres.
Float switch and control
A float switch starts and stops the pump automatically as the pit fills and empties. Use a high-level alarm for safety. Fit a non-return valve on the discharge to stop backflow.
Pit and installation
Use a sealed pit with a lid, vented to the outside, with the pump on a firm base and a guide chain for lifting. Keep electrical parts dry and use proper cable glands. Fixed plumbing and electrical connections should be done by licensed tradespeople.
Safety
Sewage pits release harmful gases, so never enter without ventilation and training. Use rated equipment and lift the pump by its chain.
Maintenance
Inspect the pump and float every few months, clear the pit of rags and plastics and check the seal and oil chamber. Replace worn parts early. Do not flush wipes, which jam pumps.
What to check before buying
- Solids size. Matches waste
- Head and flow. On the pump curve
- Float and alarm. Fitted
- Warranty and service. Written
Pump or gravity
Where the sewer is below the house, gravity drainage is simpler and cheaper. A pump is for basements and low plots.
Before you decide
Choose a sewage-rated pump, check solids size and head and fit a float switch and alarm. A proper sewage pump runs reliably when installed in a sealed, vented pit.
Frequently Asked Questions
A pump designed to move wastewater containing solids. Ask for the specification in writing so you can compare quotes on the same basis. Check the warranty terms and who honours them before you pay. Measure carefully and confirm sizes with the seller before ordering.
A non-clog pump is about PKR 25,000 to 50,000 and a cutter pump about PKR 35,000 to 70,000. Check the warranty terms and who honours them before you pay. Measure carefully and confirm sizes with the seller before ordering. Rates and stock change, so confirm the current position before you commit.
No, it will clog and burn out. Measure carefully and confirm sizes with the seller before ordering. Rates and stock change, so confirm the current position before you commit. If you are unsure, send a photo and the measurements and we will advise.
It starts and stops the pump as the pit level changes. Rates and stock change, so confirm the current position before you commit. If you are unsure, send a photo and the measurements and we will advise. Ask for the specification in writing so you can compare quotes on the same basis.
No, not without ventilation and training. If you are unsure, send a photo and the measurements and we will advise. Ask for the specification in writing so you can compare quotes on the same basis. Check the warranty terms and who honours them before you pay.
Send the details and a photo on WhatsApp. We confirm what we can supply and reply with a written rate that lists the model, size, warranty and delivery, so you can compare it with other quotes on the same scope. Rates and stock change, so confirm the current position before you commit.
Choosing a sewage pump?
Send the details and a photo. We reply with a written rate.