Description, selection and use of hoses for motor pumps

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Depending on the purpose, there are several types of pump hoses: suction, pressure and pressure-suction. The suction hoses are responsible for the supply of liquid from the source to the inlet of the equipment. Pressure-suction units are used for both suction and water supply. As for the pressure hoses, they differ from the suction hoses in greater strength, they are able to withstand temperature drops, the chemical effect of liquids and high pressure.

The suction hoses are made of smooth rubber with a textile layer. Pressure-suction heads are produced from flexible plastic, they have a corrugated shape. The pressure hoses are complemented by reinforced metal rings.

All types of sleeves have the same design. It is represented by inner (rubber) and outer (latex) layers, between which a textile frame is placed. In turn, textiles can be single or multi-layered. The more layers, the more durable the hose is considered.

Well suited for pumps as pressure hoses and fire hoses. They are made of nylon, which can withstand severe frosts, and are equipped with a special nut that secures the discharge pipe. Such hoses are durable and easy to use, as the connection head is much easier to use than clamping clamps.

Also, pump hoses are classified by length and diameter. Now on sale you can find sleeves with a diameter of 25, 40, 50, 75, 80, 100, 125 and 150 mm. As for the length, it varies from 4 to 10 m. The sleeves are strictly selected for a specific pump model, since they must correspond to the power of the motor and ensure the performance of the device. So, hoses with a diameter of 25 to 50 mm are more often used for watering small areas. Products with a diameter of 75 mm and more are suitable for larger works.

Reinforced hoses with a diameter of 50, 75 and 80 mm are characterized by increased strength, since their construction consists of silicone, inside which there is a rigid spiral and PVC. In some types of reinforced sleeves, a metal spiral is present. Such products are designed for different fluid pressures.

• 4SP - designed for medium pressure. There are four layers of steel wire in their construction.
• 4RS - used for pumping liquids under high pressure. These hoses have four layers in the form of a strong spiral.
• R12 - withstand medium pressure and high temperature.
• R13 and R15 are wound in six layers, due to which they are resistant to temperature extremes and high pressure.

Recommendations for use

When operating the intake suction and delivery hoses, it is imperative to take into account a number of requirements and standards that can significantly extend the service life of products.

Observe the product class when transporting media. KShch series hoses are designed for acids and alkalis. To move oil products through the system, hoses of B / MB categories are used, which are distinguished by a high level of oil and petrol resistance. For gaseous media, flexible hoses with the G marking are used.
Choose products according to their climatic performance. The ХЛ marking allows the hose to withstand the temperature range from -50 to +70 degrees Celsius. Category T is for the tropics. Here, the maximum allowable drop in ambient temperature reaches -10 degrees.The most common option for a temperate climate is marked with the letter U.
When laying lines, avoid significant bending of the hose at a steep angle. Intensively loaded elements require additional fastening using unloading belts and rope fastenings.
When moving the hose, avoid dragging, dropping the hose onto a hard surface

Careful handling can avoid the formation of microcracks and ruptures that could affect its tightness.
When operating in winter, a constant pressure should be maintained inside the hose, preventing the liquid from freezing and the formation of ice on the walls. After use, the sleeves must be warmed up at room temperature

If the transported medium is capable of contaminating the inner surface, after completion of the work, it is imperative to rinse the inner cavities, freeing them from possible plaque.

For how to use the suction and delivery hoses, see the following video.

How to choose?

When purchasing hoses for a motor pump, it is important not only to take into account the reviews about the manufacturer, but also to pay attention to the size of the products. If the diameter of the sleeve differs from that of the branch pipe, the performance of the pumping device will significantly decrease. Also, the hoses must withstand the load when supplying fluid.

Sleeve length also plays a huge role. The larger it is, the more convenient it will be to operate the pump. Preference should be given to those products that are sold complete with couplings. This saves the cost of purchasing additional fasteners and provides the hose with increased durability.

Also, the hoses must be able to withstand the load when the fluid is supplied. Sleeve length also plays a huge role. The larger it is, the more convenient it will be to operate the pump. Preference should be given to those products that are sold complete with couplings. This saves the cost of additional fasteners and provides the hose with increased durability.

In addition to taking into account external characteristics, before buying, you need to clarify what temperature of the liquid the sleeve can withstand. As a rule, most species are resistant to temperatures from -5 ° C to + 60 ° C. There are also more durable sleeves that are not afraid of harsh conditions. They can be used in conditions from -35 ° C to + 90 ° C.

You will learn more about hoses for motor pumps in the video below.

Peculiarities

The main difference between this product made of PVC, polyurethane, rubber is its increased tensile strength, which makes it possible to contain even an intense pressure of water without visible efforts. When the liquid is supplied, the walls of the flexible hose do not stick together, retain their predetermined shape, and avoid deformation. Reinforced delivery and suction hose additionally reinforced with PVC or steel threads. They can significantly increase the rigidity and extend the service life of the product.

PVC wastewater suction hoses for wastewater are used in pumping installations of various capacities. They are distinguished by a large diameter of the sleeve, they can pass significant volumes of water. The industry also produces rubber hoses for motor pumps and other product models, which are subject to less stringent requirements for strength and durability.

The delivery-suction hose is a hollow tubular product capable of pumping liquid, gaseous, bulk materials under the pressure of the medium. The products have a polymer structure, are made of polymer materials or rubber with a spiral metal or plastic reinforcement. One-piece, homogeneous polyvinyl chloride or polyurethane sleeves with lower strength characteristics are also produced. Among the features of the suction and delivery hoses are:

• long service life;
• fire resistance;
• the ability to create a vacuum environment or build pressure;
• flexibility and elasticity;
• a wide range of materials used (metal, plastic, synthetic rubber, silicone);
• variety of applications.

Criterias of choice

When choosing a suitable hose with a pressure head and suction purpose, it is imperative to take into account the scope of its application and some other factors.

For motor pumps

When choosing a sleeve for a pump, you should be guided exclusively by the dimensions of the nozzle - the most common options are 50 mm, 100 mm, 75 mm, 65 mm, 25 mm (1 inch), 20 mm. Also, when used for water intake, products with a diameter of 32 mm (1.5 inches) or 20 mm are often used. The length of the hoses also matters (the recommended length is indicated in the manual for the motor pump) - it can vary from 4 to 10 m.

For flusher

The suction and delivery hoses used to carry out sewage works must have high strength and throughput. Among the characteristics that are important for the successful operation of the product, it is worth highlighting:

• the number of layers of material - single-layer PVC and rubber are considered the least reliable, multi-layer can withstand heavy loads;
• length - it is determined by the depth of the pits cleaned of feces, the standard sleeve reaches 15 m;
• the diameter of the inner part of the hose - it is in the range of 15-200 mm, for the most powerful pumps the maximum values ​​are needed;
• resistance to changes in ambient temperature conditions (from -25 to +55 degrees);
• reinforcement - it can be presented in the form of a PVC spiral or metal threads.

For household needs

When choosing hoses for water intake, irrigation, connecting household appliances to the sewer system, organizing autonomous water supply systems, PVC hoses with polymer reinforcement are used. Corrugated hoses with a diameter that takes into account the dimensions of the branch pipes of the equipment or the main line, intended for the transportation of thick, free-flowing substances, have a metal reinforcement located in a spiral, longitudinally or with intersecting threads.

For a pumping station, the length of the purchased hose should be equal to the distance from the water supply point to its input in the house. The working sleeve must have fairly thick walls and withstand significant pressure from the medium. For the most powerful pumping stations, hoses reinforced with a steel spiral should be used. For drinking water sources (wells, wells), connection options with hoses with a fairly high level of sanitary and hygienic safety are used.

Peculiarities

A motor pump is a pumping equipment that is often used in utilities, agriculture and construction. In addition, this technique is indispensable in everyday life when pumping water from wells, basements, as well as when working on land. Hoses are considered the main component of such a device, since the performance of the equipment depends on them.

Hoses for a motor pump are discharge and suction hoses. They can also differ in material of manufacture and size. Hoses (hoses) have a multi-layer structure that gives them strength and protects them from tearing.

Special requirements are imposed on motor pump hoses.

• resistant to bending and compression;
• resistant to the pumped liquid;
• adapted for long-term operation;
• convenient to join.

Also, the suction and pressure hoses must be able to withstand both low and high temperatures. As a rule, all sleeves are sold complete with fasteners that simplify installation.

PRESSURE SLEEVES FOR MOTOR PUMPS

SLEEVES "GETEX"

SLEEVES "ARMTEX"