Gasoline motor pumps: types and characteristics

A gasoline motor pump is a mobile pump combined with a gasoline engine, the purpose of which is to pump water or other liquids.

Next, a description of motor pumps, their design, principle of operation, varieties and popular models will be presented.

The motor pump can be used for the following purposes.

• Filling or draining pools, watering summer cottages or agricultural plots. Pumping water from open sources.
• Pumping a variety of liquid chemicals, acids and other agricultural chemicals.
• Removing water from various pits and trenches.
• Pumping water from flooded areas of houses (basements, garages, etc.).
• For various emergencies (flood or fire).
• Creation of an artificial reservoir.

The main component of any motor pump is a pump that pumps water at high speed. Two types of pumps are often used - centrifugal and diaphragm.

Their principle of operation is similar to pistons. By alternately squeezing the working fluid into the pipe, the membranes maintain a continuous high pressure flow.

The design with a centrifugal pump has a fairly widespread use. The motor turns the pump impeller, either by a belt drive or by direct connection. When twisted, the centrifugal pump, due to its design, generates a low pressure area on the inlet hose, due to which the liquid is drawn in.

Due to centrifugal forces, the impeller at the outlet forms an area of ​​increased pressure. As a result, a flow of water is obtained, while there must be a working pressure on the outlet hose.

Most pumps are equipped with non-return valves. Gasoline motor pumps are supplied with meshes with cells of various sizes (the size of the cells varies depending on the possible degree of contamination of the pumped water), which act as filters. The pump and motor housing is mainly made of steel in order to protect the pump working units from damage.

To improve maintainability, most pumps have a collapsible casing (clean the net from dirt and other debris). Gasoline-powered motor pumps are installed on a reinforced frame to ensure stability during operation and safety during transportation.

The performance of a motor pump depends on the following factors:

• the amount of liquid transported (l / min);
• fluid head pressure on the outlet hose;
• working depth of liquid tightening;
• diameter of hoses;
• dimensions and weight of the device;
• pump type;
• engine's type;
• the degree of contamination (particle size) of the liquid.

There are also separate parameters such as:

• engine characteristics;
• noise level;
• way of starting the engine;
• price.

Brief instructions when working with a motor pump.

• Try not to allow the device to work without liquid, as running "dry" the pump may overheat and fail. To minimize overheating, fill the pump with water before operation.
• Check the oil level and the condition of the oil filter.
• To safely store the pump for a long time, drain the fuel.
• To start and stop the device - follow the step-by-step instructions.
• Make sure that the hoses are not kinked, otherwise they may break.
• Before choosing a pump, specify the place from where the liquid will be pumped out. In the case of using a well or a well, you will not need a filtration system.

• The operating parameters of the device are calculated at a water temperature of 20 ° C. The maximum possible temperature for pumping is ~ 90 ° C, but such water will not work for a long time.

According to OKOF, motor pumps are divided according to the type of fluid transportation, the type of engine and the diameter of the pressure head and suction hoses.

• For transporting liquids containing particles of debris up to 8 mm (clean or slightly soiled).
• For transporting liquids containing debris up to 20 mm in size (medium soiled liquids).
• For transporting liquids containing debris up to 30 mm (heavily soiled liquids). Models working with such fluids are called "Mud pumps".
• For transporting salt water or chemicals.
• For transporting liquids with increased viscosity.
• High pressure motor pumps or "Fire motor pumps" for supplying water to a great height or distance.

According to the diameter of the pressure and suction hoses, the units can be:

• one-inch ~2.5 cm;
• two-inch ~5 cm;
• three-inch ~7.6 cm;
• four-inch ~10.1 cm.

Below are the most popular models of gasoline motor pumps.

• SKAT MPB-1300 - designed to work with clean, medium and heavily soiled liquids with particles up to 25 mm. Throughput 78,000 l / h.
• Caliber BMP-1900/25 - it is used for working with clean and lightly soiled liquids containing debris up to 4 mm in size. Throughput capacity 25000 l / h.
• SDMO ST 3.60 H - designed for work with clean liquids containing debris up to 8 mm in size, silt and stones. Throughput 58200 l / h.

• Hyundai HYH 50 - it is used for working with liquids, clean and slightly contaminated with particles up to 9 mm. The throughput is 30,000 l / h.
• Hitachi A160E - designed to work with clean liquids containing debris up to 4 mm in size. Throughput 31200 l / h.
• SKAT MPB-1000 - it is used for working with liquids, clean and medium contamination, liquids with a particle content of up to 20 mm. Capacity 60,000 l / h.

• DDE PTR80 - designed to work with clean, medium and heavily soiled liquids with particles up to 25 mm. Throughput 79800 l / h.
• Caiman CP-205ST - it is used for working with liquids of medium pollution with a content of debris particles up to 15 mm in size. Throughput 36,000 l / h.
• Elitech MB 800 D 80 D - designed to work with liquids of strong contamination with particles up to 25 mm. Capacity 48000 l / h.

• Hyundai HY 81 - used for working with clean liquids containing debris up to 9 mm in size. Capacity 60,000 l / h.
• DDE PH50 - designed to work with clean liquids with a particle content of up to 6 mm. Throughput 45,000 l / h.
• Pramac MP 66-3 - it is used for working with clean, medium and heavy soiled liquids containing particles of debris up to 27 mm in size. Throughput 80400 l / h.

• Patriot MP 3065 SF - designed for work used for working with clean, medium and heavy soiled liquids containing debris up to 27 mm in size. Throughput 65,000 l / h.
• Huter MPD-80 - designed for work with liquids of strong contamination with a content of debris grains up to 30 mm in size. Throughput 54,000 l / h.
• Hitachi A160EA - it is used for work with clean, light and medium contamination liquids containing particles of debris up to 20 mm in size. Capacity 60,000 l / h.

The choice of different models of motor pumps is quite large. As mentioned above, there are a large number of varieties, so a logical question may arise, what to choose, for example, for regular use in the country?

Before buying, you need to consider the following nuances.

• For what work will the pump be used... At this stage, it is necessary to determine what kind of work will be carried out in order to know the type of pump (general or special purpose). The first type is suitable for domestic use, and the second is a highly targeted (sewer or fire) motor pumps.
• Type of transported liquid... An analysis of pumps by type of fluid is given above.
• Outlet hose diameter... It can be determined by the diameter of the end of the inlet and outlet hoses. The performance of the pump depends on this.
• Liquid lifting height... Shows how good the head is produced by the pump (determined by the engine power). This characteristic is usually spelled out in the instructions for the device.
• Liquid suction depth... Shows the maximum suction depth. Usually does not overcome the 8-meter mark.
• The presence of filters that prevent clogging of the pump... Their presence or absence affects the cost of the device.
• The temperature of the transported liquid... Despite the fact that most pumps are designed for temperatures up to 90 ° C, do not forget about the increase in materials under the influence of heat, from which the pump is made.
• Pump performance... The amount of water that the pump pumps over a period of time.
• Type of fuel (in this case, we choose among gasoline motor pumps).
• Fuel consumption... It is usually prescribed in the instruction manual for the equipment.

How to choose the right motor pump, see below.