A.Y. McDonald 1/2 HP Sewage Pump - Cast Iron

Sewage Pumps

Sewage pumps lift raw sewage, toilet waste included, from basement bathrooms, ejector pits and commercial basins up to the sewer. This collection runs from 1/2 HP A.Y. McDonald DuraMAC ejectors and ready-to-set packages, through heavy-duty cast iron pumps to 2 HP, to Franklin Electric non-clog solids-handling pumps to 20 HP for lift stations, plus Grundfos Unilift stainless pumps. Every pump passes at least 2 in solids, as codes require with a toilet. For long or uphill small-pipe runs, see Grinder Pumps. Run the Sump & Sewage Pump Calculator or send us your fixtures, lift and run for an engineering-led selection. Call 1-888.510.4036 or email sales@watermainsupply.com.

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A.Y. McDonald DuraMAC Sewage Ejector Package - 1/2 HP
A.Y. McDonald DuraMAC 5050CTSJPAC Sewage Package 1/2 HP 120V Cast Iron

A.Y. McDonald

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A.Y. McDonald DuraMAC Sewage Ejector Package - 1/2 HP

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Franklin Electric 4NCH Non-Clog Solids Handling Pump - 4 in Flanged
Franklin Electric FPS 4NCH submersible non-clog pump with air-filled IE3 motor

Franklin Electric

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Franklin Electric 4NCH Non-Clog Solids Handling Pump - 4 in Flanged

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Franklin Electric 4NC Non-Clog Solids Handling Pump - 4 in Flanged
Franklin Electric FPS 4NC submersible non-clog pump, 4 in flanged discharge

Franklin Electric

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Franklin Electric 4NC Non-Clog Solids Handling Pump - 4 in Flanged

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Franklin Electric 3NC Non-Clog Solids Handling Pump - 3 in Flanged
Franklin Electric FPS 3NC submersible non-clog pump, 3 in flanged discharge

Franklin Electric

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Franklin Electric 3NC Non-Clog Solids Handling Pump - 3 in Flanged

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Grundfos Unilift AP Wastewater Pump
Grundfos Unilift AP35 submersible effluent pump with vertical outlet

Grundfos

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Grundfos Unilift AP Wastewater Pump

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A.Y. McDonald Heavy-Duty Cast Iron Vortex Sewage Pump
A.Y. McDonald 1/2 HP Sewage Pump - Cast Iron

A.Y. McDonald

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A.Y. McDonald Heavy-Duty Cast Iron Vortex Sewage Pump

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A.Y. McDonald Cast Iron Vortex Sewage Pump - 1/2 HP
A.Y. McDonald 1/2 HP Sewage Pump - Cast Iron

A.Y. McDonald

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A.Y. McDonald Cast Iron Vortex Sewage Pump - 1/2 HP

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A.Y. McDonald DuraMAC High Volume Sewage Pump - 1/2 HP 120V
A.Y. McDonald DuraMAC 5050CTSJ15 High Volume Sewage Pump 1/2 HP 120V Cast Iron / SS

A.Y. McDonald

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A.Y. McDonald DuraMAC High Volume Sewage Pump - 1/2 HP 120V

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A.Y. McDonald DuraMAC Cast Iron Sewage Ejector Pump - 1/2 HP 120V, 2 in Solids
A.Y. McDonald DuraMAC 5050CTSJ Sewage Pump 1/2 HP 120V Cast Iron

A.Y. McDonald

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A.Y. McDonald DuraMAC Cast Iron Sewage Ejector Pump - 1/2 HP 120V, 2 in Solids

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Sewage Pumps

Sewage Pumps · 2 in Solids and Up

Sewage Pumps & Ejector Packages

Pumps that lift raw sewage from basement bathrooms, ejector pits and commercial basins to the sewer: 1/2 HP DuraMAC ejectors and ready-to-set packages, heavy-duty cast iron pumps to 2 HP, and Franklin non-clog solids-handling pumps to 20 HP. A.Y. McDonald, Franklin Electric and Grundfos, sized by engineers.

A.Y. McDonald DuraMAC 5050CTSJPAC sewage ejector package
1/2–20 HPResidential to Commercial
2–3 inSolids Passed
To 948 GPMMax Flow
To 114 ftMax Head
3 BrandsA.Y. McDonald · Franklin · Grundfos

A sewage pump sits in a sealed, vented basin below the sewer line and lifts raw sewage, toilet waste included, up to the gravity main. Plumbing codes set the floor: a pump that passes 2 in solids, a discharge of at least 2 in, and enough flow to keep the line scoured. From there the job sets the size, from a 1/2 HP ejector under a basement bathroom to a 20 HP non-clog pump in a commercial lift station.

We supply A.Y. McDonald DuraMAC ejectors and complete simplex packages, heavy-duty A.Y. McDonald cast iron sewage pumps, Franklin Electric non-clog solids-handling pumps and Grundfos Unilift wastewater pumps, and we size them: send us the fixtures, the lift and the run to the sewer, and we come back with the pump, the basin and the reasoning. Call 1-888.510.4036 or email sales@watermainsupply.com. All products are genuine, factory-new equipment in original manufacturer packaging, sold and supported by Watermain Supply, an independent industrial supplier.

Will It Work for Me?

Answered from the manufacturers’ published data.

Warranty

DuraMAC sewage and high-volume pumps and the PAC, PACSL, PAC24 and PACSDA packages: 3 years from installation. A.Y. heavy-duty cast iron: 1 year from installation or 2 from manufacture, whichever comes first. Franklin non-clog: 2 years from original purchase. Grundfos Unilift: per each listing.

Reliability

Vortex and non-clog impellers that pass solids without wrapping, oil-filled cast iron motors on the A.Y. heavy-duty line, dual silicon carbide seals with a seal-fail probe on the Franklin non-clog pumps, and replaceable piggyback floats.

Fit

DuraMAC ejectors lift to 25 to 30 ft on 120V. A.Y. heavy-duty pumps reach 76 ft; Franklin non-clog pumps 114 ft and 948 GPM. Above about 30 ft through small pipe, a grinder is often the better answer.

Size It Now

Pick the discharge size and enter the lift and the run; the calculator applies the code minimum flow and returns the duty and the pump class.

Sump & Sewage Pump CalculatorCode-minimum flow, total head and pump class for sewage basins

Sewage, Effluent or Grinder?

The liquid and the run decide it.

Sewage pump

  • Raw sewage with toilet waste, no septic tank upstream.
  • Passes 2 in solids or more; 2 in or larger discharge.
  • Lifts to a nearby gravity sewer, typically under 30 ft on residential models.
  • Commercial non-clog pumps go much higher and bigger.

Effluent or grinder instead

  • Water after a septic tank: an effluent pump.
  • Long, uphill or small-diameter force main, or low-pressure sewer: a grinder pump.
  • Laundry tub or wet bar with no toilet: a sink drain system on the Sump Pumps page.
Quick rule: a toilet upstream with no septic tank in between means a sewage pump or a grinder. Under about 25 ft to a nearby sewer, a sewage ejector; farther or higher through small pipe, a grinder.

The Lines

From a basement bathroom to a commercial lift station.

A.Y. McDonald DuraMAC cast iron sewage ejector pump

DuraMAC Sewage Ejectors

1/2 HP · 120V · pumps and packages

80–140 GPMMax flow
25–30 ftMax lift
2 inSolids and discharge
3 yearsWarranty

Cast iron ejectors with a stainless vortex impeller for basement bathrooms and laundry, in tethered, vertical or no-switch builds. The high-volume models reach 140 GPM; the packages add a 30 or 45 gallon basin, gasketed lid, check valve and, on some, an alarm.

  • Plug-in 120V, 10 to 25 ft cords
  • 7 ready-to-set simplex packages
  • No-switch models for alarm and duplex panels
Best forBasement bathrooms and additions below the sewer line.
View DuraMAC Ejectors
A.Y. McDonald heavy-duty cast iron vortex sewage pump

A.Y. Heavy-Duty Cast Iron

1/2 to 2 HP · 115V or 208-230V · oil-filled

25–76 ftMax head
108–219 GPMMax flow
2 inSolids
2 or 3 inDischarge

Oil-filled cast iron sewage pumps with 20 ft quick-disconnect cords. The 1/2 HP models reach 25 ft with a choice of manual, wide-angle or vertical float; the 1/2 to 2 HP vortex models reach 76 ft for developments, schools, motels and campgrounds.

  • Ductile iron vortex impeller on the 1/2–2 HP models
  • Piggyback switch design
  • Optional double seal with seal-failure sensing
Best forLight commercial basins, multi-unit buildings and longer lifts.
View Heavy-Duty Pumps
Franklin Electric 4NC non-clog solids handling pump

Franklin Non-Clog Solids Handling

3 to 20 HP · single and three phase

49–114 ftMax head
545–948 GPMMax flow
2.5–3 inSolids
3 or 4 inANSI flange

Submersible non-clog pumps for raw, unscreened sewage in commercial and industrial lift stations: semi-open ductile iron impeller, field-adjustable wear plate and dual silicon carbide seals with a seal-fail probe. Impeller trim or horsepower is chosen from the duty point.

  • 3NC and 4NC: 3 and 5 HP, 1Ph or 3Ph
  • 4NCH: 7.5 to 20 HP, 3Ph, to 114 ft
  • cCSAus listed
Best forCommercial and municipal lift stations moving hundreds of GPM.
View Franklin Non-Clog

Also in This Collection

A.Y. McDonald DuraMAC sewage ejector package

DuraMAC Packages

Pump, basin, lid and check valve; alarm optionsPAC · PACSL · PAC24 · DA1 A.Y. McDonald DuraMAC high volume sewage pump

DuraMAC High Volume

1/2 HP, stainless housing, to 140 GPM and 30 ft5050CTSJ15 · CVSJ15 A.Y. McDonald 1/2 HP cast iron sewage pump

1/2 HP Cast Iron

115V or 230V, manual, wide-angle or vertical float405011SJ · 405012SJ Franklin Electric 4NCH non-clog solids handling pump

Franklin 4NCH

7.5 to 20 HP, to 948 GPM and 114 ftThree phase Grundfos Unilift AP50 stainless wastewater pump

Grundfos Unilift AP50

1-1/2 HP stainless, automatic float, 2 in solidsAP50 · AP50B

Every Sewage Pump Compared

Published maximums from each manufacturer’s literature. Read the curve at your own flow and head before you choose.

Family HP Voltage Max head Max flow Solids Discharge Switch
DuraMAC ejector 1/2 120V 25 ft 80 GPM 2 in 2 in Tethered, vertical, none
DuraMAC high volume 1/2 120V 30 ft 140 GPM 2 in 2 in Tethered, vertical, none
A.Y. 1/2 HP cast iron 1/2 115V or 230V 25 ft 108 GPM 2 in 2 in Manual, wide-angle, vertical
A.Y. heavy-duty vortex 1/2–2 115V or 208-230V 37–76 ft 122–219 GPM 2 in 2 or 3 in Manual
Grundfos Unilift AP50 1-1/2 230V Per listing Per listing 2 in 2 in NPT Automatic float
Franklin 3NC 3, 5 1Ph or 3Ph 58 ft 555 GPM 2.5 in 3 in flange Panel
Franklin 4NC 3, 5 1Ph or 3Ph 49 ft 545 GPM 3 in 4 in flange Panel
Franklin 4NCH 7.5–20 3Ph 114 ft 948 GPM 3 in 4 in flange Panel

Sources: A.Y. McDonald Pumps by Baker catalog rev 3/26, pp. 311–318 and 329–332 (curve maximums rounded down); Franklin Electric and Grundfos literature as listed on each product page.

Verdict: DuraMAC wins for the basement bathroom: 120V plug-in, the switch your basin needs and complete packages. The A.Y. heavy-duty pumps cover light commercial lifts to 76 ft at a fraction of commercial-pump weight. Franklin’s non-clog pumps win outright on flow, head and solids for real lift stations, and the Grundfos Unilift AP50 is the stainless option with an automatic float.

Selection Guide

Application Typical duty Start here Notes
Basement bathroom, nearby sewer 20–60 GPM, under 20 ft DuraMAC 5050CTSJ or 5050CVSJ Or a complete DuraMAC package
New basement bath, one order Same DuraMAC sewage ejector package Alarm models: PACSDA, PACDA1
Several fixtures, more flow Up to 100 GPM, under 25 ft DuraMAC high volume Stainless housing
230V or a separate float Under 25 ft A.Y. 405012SJ / SJA Piggyback float design
Light commercial, multi-unit 25 to 70 ft A.Y. heavy-duty 1 to 2 HP Panel and floats
Stainless, automatic float Moderate Grundfos Unilift AP50 230V
Commercial lift station Hundreds of GPM Franklin 3NC or 4NC Trim chosen from the duty point
High-head lift station To 110 ft Franklin 4NCH Three phase, 7.5 to 20 HP
Long or uphill small-pipe main High head, low flow Grinder pumps 1-1/4 in force main

Typical duties are guidance. The pump is chosen on its curve at your flow and total head.

Sizing a Sewage Pump

Code sets the minimum flow; the piping sets the head.

1. Minimum flow

Plumbing codes call for at least 2 ft/s in the discharge so solids keep moving: about 21 GPM in 2 in pipe, 30 GPM in 2-1/2 in and 46 GPM in 3 in. A bigger pipe needs a bigger flow, so don’t oversize the discharge. Commercial stations are sized on the peak hour flow.

2. Total head

Total head = vertical lift from the basin floor to the highest point of the discharge + friction in the pipe + losses in the check valve, shutoff valve and elbows.

Worked example: a basement bathroom 12 ft below the sewer tie-in, 30 ft of 2 in PVC with two elbows, a check valve and a shutoff valve. The code minimum is 21 GPM (2 ft/s). Friction and fittings add about 0.6 ft at that flow, so total head is about 12.6 ft. The DuraMAC 5050 ejector makes 60 GPM at 10 ft and 44 GPM at 15 ft on its published table: comfortably above 21 GPM at 12.6 ft.

Run your numbers in the Sump & Sewage Pump Calculator, or send us the fixtures and the run and we size the basin and pump.

Code Basics and What Makes a Sewage Pump Last

2 in solids, 2 in discharge

With a toilet draining to the basin, codes call for a pump that passes 2 in spherical solids and a discharge of at least 2 in. Every sewage pump on this page meets it.

Sealed, vented basin

A gas-tight lid and a vent to open air keep sewer gas out of the building. Check your local code for vent size and termination.

Alarm, check valve and shutoff

A high-water alarm warns before a backup; a check valve stops the line draining back; a full-port shutoff lets you service the pump.

Vortex and non-clog impellers

Vortex impellers sit back in the volute so solids pass without touching the vanes; Franklin’s semi-open non-clog impeller has a field-adjustable wear plate.

Oil-filled motors and seals

Oil cools the motor and lubricates the bearings on the A.Y. heavy-duty line; double or dual seals with failure sensing protect the commercial pumps.

Piggyback switches

A failed float is replaced on its own, and a manual pump can run from any piggyback float or a duplex alternating panel.

Floats, Disconnects and Parts

A.Y. McDonald DuraMAC replacement float switch

DuraMAC Float Switch

Vertical or tethered piggyback float for DuraMAC ejectors

 A.Y. McDonald Pumpmaster float switch

Pumpmaster

Wide-angle piggyback float for the heavy-duty pumps

 Campbell guide rail sewage pump disconnect

Guide Rail Disconnect

Lift the pump out without entering the basin

 A.Y. McDonald DuraMAC basin accessories

Package Gaskets

Lid and side discharge gaskets for DuraMAC packages

All parts are genuine, factory-new manufacturer parts. See all sump, sewage and effluent accessories.

Why Size It With Watermain Supply

Engineering-led sizing

We apply the code minimum flow, work out the head from your piping and check the pump on its published curve before we quote.

Multi-brand honesty

We sell A.Y. McDonald, Franklin Electric and Grundfos sewage pumps. If one is not the right fit, we will say so.

Basement to lift station

From a 1/2 HP plug-in ejector to a 20 HP non-clog pump: one supplier for the whole range.

Parts and aftermarket

Floats, disconnects, gaskets and repair parts listed by part number.

Contractor accounts

Account options for plumbers and contractors; ask us.

Houston and Gulf Coast

Based in Houston, shipping nationwide, with people who answer the phone and size pumps.

Frequently Asked Questions

What is the difference between a sump pump and a sewage pump?

A sump pump moves groundwater with small solids. A sewage pump moves raw sewage with toilet waste and passes 2 in solids through a 2 in or larger discharge, as plumbing codes require when a toilet drains to the basin.

What size sewage pump does a basement bathroom need?

Usually a 1/2 HP ejector. It must deliver at least the code minimum flow (about 21 GPM in 2 in pipe) at your total head; the DuraMAC 5050 makes 60 GPM at 10 ft.

Why does the discharge have to be 2 in?

Codes set a 2 in minimum for pumps serving toilets so solids pass, and a 2 ft/s minimum velocity so they stay moving. A larger pipe raises the flow needed to reach that velocity.

Do I need an alarm?

Most codes require a high-water alarm on a sewage basin, and it is cheap insurance against a backup. The DuraMAC PACSDA and DA1 packages include one.

Sewage pump or grinder pump?

A sewage pump for short lifts to a nearby gravity sewer. A grinder for long, uphill or small-diameter force mains and low-pressure sewer systems.

What is the warranty?

DuraMAC sewage and high-volume pumps and the PAC, PACSL, PAC24 and PACSDA packages: 3 years from installation. A.Y. heavy-duty cast iron: 1 year from installation or 2 from manufacture, whichever comes first. Franklin non-clog: 2 years from original purchase.

Simplex or duplex?

Simplex is one pump, standard for a home. Duplex is two pumps on an alternating panel, so one covers if the other fails; it is common in commercial and multi-unit buildings. The no-switch and manual pumps here run in duplex from a panel.

Can you size a lift station?

Yes. Send the peak flow or the units served, the static lift, the force-main length and size, and the power available, and we return the pumps, trim and panel with the reasoning. Call 1-888.510.4036.

Ready to Size Your Sewage Pump

Run the calculator, or send us the fixtures, lift and run and we come back with the pump, basin and a quote.

1-888.510.4036Sump & Sewage Pump CalculatorEmail a Sizing RequestRequest a Quote
Technical data on this page is taken from A.Y. McDonald, Franklin Electric and Grundfos product literature and is subject to change by the manufacturer. Confirm against the current installation manual before specifying.
A.Y. McDonald, DuraMAC, Franklin Electric, FPS, Grundfos and Unilift are trademarks of their respective owners, used here for product identification only.
Watermain Supply is a DBA of E4 Industrial LLC, an independent industrial supplier based in Houston, Texas.