Cesspool pump: selection tips + review of the best brands

Nikolay Fedorenko
Checked by a specialist: Nikolay Fedorenko
Author: Elena Nikolaeva
Last update: August 2019

The cesspool is the simplest sewer store requiring periodic emptying. In order to empty the tank of sediment, they usually call the sewers.

However, the fecal pump for the cesspool, which helps to empty the drive on its own, will also help with this task. Let's admit: not all of us know which unit should be selected for this procedure.

We have reliable information that provides answers to a wide range of questions arising from the owners of autonomous sewer systems. The use of the information presented by us will greatly facilitate and accelerate the selection of a technical device.

The article, which was brought to the attention of site visitors, describes in detail the design features and the principle of operation of fecal pumps. The differences between the units, depending on the upcoming operating conditions, are indicated. To help the buyer, a rating of popular models, photos and video reviews is given.

Features of the device fecal pumps

The main purpose of the equipment is to pump out a viscous and dirty liquid with a high concentration of fibrous and solid inclusions. The mechanisms easily cope with liquid processing, the linear size of which inclusions can reach 50 mm.

Varieties of fecal pumps
The fecal category pumping equipment is designed for pumping and transporting liquids with an impressive amount of organic impurities. To prevent the pump from clogging, the units are equipped with a grinder

Mud pumps are indispensable:

  • at cleaning cesspools and sewer wells from silt deposits;
  • when transporting wastewater with the possibility of their disposal at distances regulated by sanitary standards;
  • when draining storm ditches and basements of houses.

The need for such equipment may arise during the arrangement forced drainage. They are installed when it is necessary to compensate for the small angle of inclination of the pipeline in order to prevent clogging of the system.

The main structural elements of the unit are:

  • engine - a device that converts the energy generated by the sources into mechanical work, which drives the pump;
  • water pump - a moving part pumping liquid into a special tank;
  • input channel - ensures that liquid enters the pump;
  • outlet valve - discharges effluents into a waste tank.
  • chopper - a rotating element designed for grinding large inclusions.

A characteristic difference between fecal devices from other types of pumps is increased reliability and a larger diameter of the channels.

Pump options
The pump is responsible for creating a forced circulation of fluid in the system; its malfunction can provoke a serious imbalance in the internal thermal regime of the unit

The chopper is an essential functional element of most models. It represents rotating knives installed at the inlet of the unit. Grinding branches, trash and even small stones into small fractions, rotating elements prevent clogging and damage to the unit.

Gear cutting device
The body and grinder of the fecal pump are made of materials resistant to mechanical and chemical effects, since they have to work in an aggressive environment and resist a considerable load

Since mud pumps are designed to work in an aggressive environment, the body of the products is always made of heavy-duty materials. Most often, steel, stainless steel or cast iron is used to create it.

Difference of units according to operating conditions

Depending on the type of construction and the possibility of the location of the unit relative to the sewage, mud pumps are of the following types: submersible, semi-submersible and surface.

Regarding the ability to pump waste, all three options for produced units have practically no differences. But still, each type has its own characteristics.

Submersible Type

Any submersible pump model is a monoblock, which is buried directly in the thick of the contents of the sump or cesspool. The unit is lowered and installed at the bottom of the tank.

Vertical installation
The main thing when using such models is to control the stable and vertical arrangement of the installation, since any skew can give an additional load (+)

This type of pump is famous for its high performance at an affordable price. Due to this, they are widely in demand both in domestic applications and on an industrial scale.

A special feature of submersible models is a sturdy, sealed enclosure that protects the “insides” from the penetration of an aggressive environment, characteristic of a sewage and sediment collection system. To ensure that devices can run smoothly in such an arrangement, manufacturers equip them with powerful pumps.

The design of the submersible structures includes a float. It is connected to a sensor that responds to the degree of filling of the tank. If the level of drains is too low, the device automatically turns off.

Fecal pump device
The presence of such a float makes it impossible to operate the unit “dry”, thereby minimizing premature failure of the device (+)

Pumps equipped with floats can be left in the wells for a long time. They will empty the tanks in a timely manner, ensuring uninterrupted operation of the system. The main thing is that the temperature of the fluid to be pumped should be less than + 40 ° C.

This is due to the design of the submersible units, when the engine cooling device is carried out all the same liquid, which is subject to pumping.

Submersible pumps, even those equipped with shredders, need regular cleaning of mechanical particles. To do this, they are removed to the surface every three months in order to perform prophylaxis.

Maintenance work
Untimely cleaning will lead to rapid wear of rotating parts, and this will provoke not only an increase in energy costs, but an increase in the risk of damage to the apparatus

It is possible to fix some damage to the pumping equipment with your own hands, for more details, see this article.

For ease of use, some manufacturers equip submersible models with cables or sled lifts. They simplify the removal of the unit to the surface after completion of work, for prophylaxis or in the event of a breakdown.

Pumping water from the pit and trenches
The fecal pump is suitable for draining the pit and trenches formed for the utilities

Pumping a cesspool by a submersible pump is carried out in the following order:

Semi-submersible units

Semi-submersible models are considered universal, since they combine the advantages of submersible and external analogues.In semi-submersible models, only the pump is buried in the wastewater, and the device motor remains on the surface outside the cesspool.

Due to the fact that the engine of the unit is located outside the liquid medium, it is much easier to carry out routine inspection and repair work.

Semi-submersible pumps in a sewer station
The installation of semi-submersible models involves immersion of the suction part of the equipment in the pumped medium. The engine and system components are located on the surface, which facilitates their control and maintenance

For domestic sewage pumps, the supplied hoses may have a small diameter. This can significantly limit unit throughput. In addition, most models are not equipped with cutting mechanisms.

This significantly limits their scope. In this regard, semi-submersible models are often chosen only as temporary.

Powerful unit in a dirty environment
The engine air cooling system allows semi-submersible pumps to work with contaminated liquids, the temperature of which varies from 40 to 100 ° C

Compared to submersible models, semi-submersible pumps are much cheaper. This is due to the fact that the mechanisms of devices and materials used for the manufacture of cases are slightly less resistant to the harmful effects of an aggressive environment.

Ground surface models

Outdoor pumps are not very high in capacity. In addition, they have a limitation on the size of inclusions. The diameter of the fractions should be within 5 mm. The maximum permissible hose length in standard models does not exceed 7 m.

Surface assembly
Surface-type models are designed for placement outside the cesspool, and only hoses connected to the unit are buried in the liquid itself

Surface models are chosen in situations where mobility is needed.

When planning to use the ground pump stationary, it is necessary to take care of protecting the unit from adverse external factors. To do this, it can be placed in a caisson or pit constructed near the cesspool.

If there is an outbuilding near the working area or a place in the utility room is equipped, the unit can safely be placed in it.

Criteria for choosing a sewage pump

All pumping units are divided into domestic and industrial. Compared to industrial counterparts, household units have lower performance characteristics of power and performance. And their cost is much cheaper.

Choosing the unit that is suitable for arrangement of a cesspool in the conditions of your site, you should focus on such criteria:

  1. Device power - determines the speed of pumping fluid from the tank.
  2. Maximum degree of pressure - indicates how high the unit is able to lift the pumped liquid.
  3. Environment settings - temperature and chemical aggressiveness.
  4. Material manufacturing the case.
  5. Additional functionality - the presence of the chopper.

To correctly calculate the required power of the unit, take the volume of the cesspool as a basis. The larger the pumped volume, the higher the power should be.

Device immersion depth
The diameter of the system pipes, the required duration of the unit during pumping and the length of the pipeline should also be taken into account

To determine the necessary degree of pressure, focus on the height of the walls of the pit. If they exceed a height of three meters, it is better to purchase a household model with a maximum degree of pressure.

To understand the capabilities of the equipment, the marking indicated on the case will help:

  • Digital code without any letters, this indicates that the model is designed for pumping effluents, the fraction size of which does not exceed 5 mm.
  • Letter "F" indicates that the unit is capable of transporting liquids whose inclusion size reaches 35 mm.
  • Letter "H" indicates the ability of the device to work in an aggressive environment.

If you plan to use the pump only to drain the toilet, you can choose a model that has a maximum permissible transfer temperature of 40 ° C. If, however, the drains of the same dishwasher or washing machine are connected to the system, an aggregate designed for raising hot drains will be required.

Stainless steel resistant to corrosion
The main requirement for the material used in the manufacture of the body is resistance to corrosion under the influence of moisture and aggressive environment

The most expensive ones are steel models. They are famous for their great work resource. The average price range is occupied by cast iron products. It is durable in operation. But a sufficiently large weight imposes severe restrictions on their application.

Budget models are made of plastic. The manufacturing material of the internal mechanism depends on the type of unit and its purpose.

For pumping single-chamber cesspools, units equipped with rotating knives are used. If the cleaning system consists of several wells, then after the first sump of large inclusions in the liquid, only sludge is present. Overpay for a more expensive model in order to grind silt, it makes no sense.

In addition to performing immediate duties, the fecal pump can be loaded with one-time work, for which it is not necessary to buy specialized equipment.

Additional information on the selection of fecal pumps:

  1. Types of fecal pumps: how to choose a good unit for your needs
  2. How to choose a fecal pump for giving: an overview of the types
  3. Fecal pump with a grinder: types, device, how to choose (+ review of the best brands)

Overview of leading manufacturers

Leading manufacturers specializing in the production of pumping equipment, in an effort to improve the performance of the units, are constantly improving their products. Each brand can reveal its inherent design features.

Products of the Italian brand Pedrollo

Pedrollo - the best Italian manufacturer, whose products are presented in more than 160 countries. The equipment manufactured under this brand meets international quality standards UNI EN ISO 9001.

Pedrollo Pumps
Pedrollo units are able to function smoothly even in highly polluted environments, the inclusion diameter of which reaches 50 millimeters (+)

A feature of Pedrollo products is that both outdoor and submersible models are equipped with impellers that simultaneously serve as choppers. This solution is convenient in that it eliminates the need for additional equipment.

The second feature of the units of this brand is a two-channel impeller design. This solution minimizes the risk of clogging of the mechanism with fiber inclusions, which often happens with conventional models when entangling rotating elements.

Grundfos Pumping Equipment

The products of the Danish company, which is very popular with customers, whose name literally means “spring” as a synonym for purity, are distinguished by the use of advanced water treatment technologies.

Grundfos Fecal Pumps
Grundfos sewage pumps are distinguished from pumping products by the use of a thermal relay system and installation of an impeller control mechanism

The impeller control system in addition to the installed thermal relay increases the working life of the unit and increases its safety during operation. The equipment of this trademark is capable of servicing fecal sewage, the short-term temperature increase of which reaches about + 35 ° С.

Many fans found the model. "Grundfos seg", which copes with stagnant drains containing a large amount of garbage. The price of the product is 50 thousand rubles.

Professional units Calpeda

The Italian company is another major producer on the world stage. It boasts a wide range and a huge production line.

Calpeda Pump
For a long-term period of operation and pumping large volumes, the Calpeda GMG model is ideal, but you will have to pay about 100 thousand rubles for it

A series of fecal pumps of this brand is represented by four lines: GMG - with choppers, GMV - with a vortex impeller, GMC - with a single-channel wheel, GMN - with multi-channel.

Dzhileks - a product of domestic production

The leader in the domestic market of professional equipment is the trademark Jilex. The company's production was built on the experience of global holdings using innovative technologies.

Fecalnik series unit
The Fekalnik series of pumps includes an extensive range of units that are small in size, quiet, and have wide functionality

Domestic pumps can be used for pumping and transporting contaminated water, in which there is a high content of silty and sandy inclusions. The maximum size of the fractions is 35 mm.

The household model deserves special attention. The Fecalist 150/6, the average price of which is 3 thousand rubles. The unit is not intended for professional purposes, but easily copes with pumping sewage in a private house.

Conclusions and useful video on the topic

Before choosing a model for a fecal pump, it will not be superfluous to see how it works and listen to the recommendations of specialists.

A good example of how a device with a chopper works:

Popular models of fecal pumps:

Properly approaching the choice of a sewage pump, you can, with a minimum of effort, eliminate pollution from the cesspool. Without saving on the purchase of a high-quality unit, you can be sure that it will serve you regularly for more than one year.

Looking for an effective fecal pump? Or have experience using such installations? Please leave comments on the article and share your impressions about the operation of pumping units.

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Visitors Comments
  1. Sergei

    We bought a submersible pump with a grinder ourselves a couple of years ago. It turned out I won’t say that it’s cheap, but it has already paid for itself, since it’s not very cheap to call a sewer machine a couple of times a month. And for us it’s a bit problematic, because we need a long pipe to bring it to the pit. The only minus: our model needs to be removed in the cold season, but if necessary, immerse it again, nothing will happen in an hour and a half.

    • Eugene

      Sergey, tell me which model your pump has?