Zoeller M53 Mighty-Mate Submersible Sump Pump

Zoeller M53 Mighty Mate Submersible Sump Pump

1/3 HP, Vertical Float Switch, Cast Iron Housing, 2040 GPH and 34 GPM @ 10 Foot Vertical Lift, 1 Year Warranty, 1 1/2 inch Discharge Port, and 9 foot Power Cord .

Review Reveals Zoeller Model M53 Is A Best Seller Online And Recommended By Plumbers

The M53-001 Mighty Mate is an Online Best Seller because it is well built, has a puncture proof float, has great pumping performance for 1/3 horsepower, has a clog proof design, and is recommended by consumers and plumbers. Shop and Compare M53 with other models.

Well Built Mighty Mate M53

Pump housing

The housing is cast iron and a higher grade than other pumps. It weighs twenty-one pounds and will not move significantly in the pit during continuous pumping. The cast iron is epoxy coated so it will not rust.

Pump Motor

The motor and housing are a unit therefore the housing dissipates heat better. Many competitors buy canned motors from another source and slip them into their pump housing. This adds another layer of material which does not dissipate heat build up during continuous pumping.

Puncture Proof Float Will Not Get Caught Or Stuck

The float is buoyant and made of solid polypropylene; therefore if it does get punctured it will not fill with water and fail to operate. A protruding stainless steel bar protrudes from the switch box at the top and protects the float from hanging up on the pit wall. The float is secured by two poles – one at the bop and one at the bottom. Since the float does not move up and down a rod like many competitor pumps, it will not get stuck. Like all sump pumps the switch will need to be replaced after four to seven years depending upon its pumping frequency. Switches are readily available online.

Great Pumping Performance

Zoeller Motors are known to rotate one-half as many times per minute as most competitors models. This saves on motor wear and leads to greater pumping performance. Zoeller 1/3 HP pumps performance is equal to many competitors 1/2 HP pumps. Likewise the 1/2 HP pumps like M98 and M137 are known to have as much pumping capacity as a competitors 3/4 HP pump.

Clog Resistant Design

Unlike many competitor pumps, the Mighty Mate M53 has a volute impeller which can handle solids up to one-half inch. The vortex impeller has a whirling motion and small solids flow through easily. There is no screen to get plugged up requiring maintenance cleaning.

Impeller Is Stronger With Metal Insert

The engineered plastic impeller is made stronger since it is glass filled with a metal insert. and is and an efficient motor and Consumers like the Zoeller Model M53 Mighty Mate because it is cast iron, a quality grade which gives the pump a weight of 21 pounds. Its weight will keep it from moving significantly during continuous pumging. a weight of heavy quality ty cast iron has many quality features. Its cast iron motor, pump housing and switch case give it durability and stability thus keeping it from moving in the sump pit. The cast iron is epoxy coated to prevent corrosion. The Volute (base of the pump) is made of engineered plastic and the engineered plastic impeller is made stronger since it is glass filled with a metal insert.

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FAQ (Frequently Asked Questions)

Will the M53 plastic impeller and base have durability, reliability and longevity? Or should I buy the M57 cast iron impeller & base?

✔ If your pump will be sucking up a great deal of grave, the plastic impeller will be fine. Our Zoeller M53 is eleven years old. We have no gravel in our pit and the plastic impeller is still working just fine.

Can M53 be used as an outdoor pump?

✔ Yes, the Zoeller M53 can be used outdoors. It is waterproof electrically. You may want to consider installing Monnit sensors so you will know when the pump is on and operational. Make sure the electrical power to the pump complies with your city code.

Do I need to put a vent hole in the discharge pipe? If so, where should it go?

✔ A vent hole is recommended.
✔ The hole should be below the basin lid and below the check valve. I usually drill it even with the top of the pump. The objective is to reduce the amount of water pushing back on the pump.

Should the pump operate independently off a 15 amp breaker?

✔ Yes, Do not plug two pumps into the same electrical socket. Do not use an extension cord either.

Can I use M53 with a 1 1/4 inch diameter discharge pipe?

✔ Yes. You will need to buy a 1 1/2 inch 1 1/4 inch adapter to screw ad the pump port. Reducing the discharge pipe size will also reduce the gallons pumped per minute.


Zoeller M53 Vs. M57 Submersible Sump Pump

Differences between Zoeller M57 and M53

The only difference between the Model M55 and M53 is that the M57 is all cast iron which includes housing, base (volute) and impeller. Model 53 has cast iron housing, thermoplastic base (volute), and engineered, glass-filled, plastic impeller with metal insert. The cost difference is around $10 (ten dollars) more for the M57 because of the additional cast iron parts.


Zoeller M53 Vs. M55 Submersible Sump Pump

Differences between Zoeller M55 and M53

The only difference between the Model M55 and M53 is the following

✔ The M55 housing and switch case is bronze.
✔ M55 and M53 have the same The base and impeller. The base is engineered thermoplastic and the impeller is engineered, glass-filled, plastic with a with metal insert.
✔ The cost difference is around $750 (seven hundred fifty dollars) because bronze is a very good material.

Zoeller M53 Vs. M98 Submersible Sump Pump

Differences between Zoeller M53 and M98

✔ The difference between the Model M53 and the M98 is that the M98 base (volute) is cast iron and the motor is 1/2 HP verses the M53 with a 1/3 HP and a base of engineered thermoplastic.
✔ The pumping performance difference at a ten foot vertical height is the M98 can pump 61 GPM and 3660 GPH while the M53 can only pump 34 GPM and 2040 GPH.
✔ The power cord is 15 feet (fifteen) on the M98 and 9 (nine feet) on the M53.
✔ The RPM (revolutions per minute for M98 is 1725 RPM. The RPM for M53 is 1550 RPM. The M98 is twelve inches high. M53 is 10 1/16 inches high.
✔ The ‘On’ position for the M98 is 9.5 inches (nine and one-half inches). M53 has an ‘On’ position of 7.25 inches (seven and one-fourth inches).
✔ The cost difference is around $90 (ninety dollars).

Zoeller Models M53, M55, M57, M98 Have Following Similar Features

✔ No sheet metal parts to rust or corrode
✔ Non-clogging vortex impeller design. No screens to clog
✔ Float operated submersible (NEMA 6) 2 -pole mechanical switch. Solid buoyant polypropylene float
✔ Upper and Lower Bearings are lower oil fed cast iron
✔ Motor is oil-filled, hermetically sealed, and has automatic reset thermal overload protection
✔ Entire unit is pressure tested after assembly
✔ Watertight neoprene “􀂅” ring exists between motor and pump housing
✔ Maximum temperature for effluent or dewatering is — 130°F (54°C)
✔ Can pass ½ (one0half) inch spherical solids
✔ Width is between 10 3/32 inches to 10 1/8 inches
✔ The discharge port size is 1 1/2 inches (one and one-half inches.)
✔ The ‘Off’ position is 3 (three inches).

Zoeller Pumps Have Easy To Install Replacement Parts

As with any sump pump the float switch will eventually need replacement. Unlike the built to throw away upon failure pumps, replacement float switches are available for the M53 and are easy to replace. If the sump pump will be used frequently it is a good idea to change it every three or four years. If the pump is not used much, the switch will probably last seven years or more.

What Other Pump Products Does Zoeller Manufacture?


See Why Plumbing Professionals Recommend Zoeller Pumps

The plumbers at WaterSystems explain why Zoeller Pumps are highly rec0mmended.

✔ There are no screens to clog ✔ Cast Iron housing does not get as hot as plasatic housing ✔ Switch is not hollow and will not fill with water

The Zoeller Submersible Sump Pump Is Very Reasonably Priced

✔ All parts are made and assembled in the USA.
✔ All pumps are tested before they leave the factory.


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