Selection of grundfos pumps online. Grundfos pumps selection brief

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Selection of Grundfos pumps online

Drainage pumps Grundfos is designed for pumping clean water, and for dirty and Wastewater with solid particles sizes within 10 mm. They are used in everyday life, in construction, on industrial facilities. Depending on the scope of application, it is possible to select Grundfos pumps online based on the wishes of the customer. Our managers are ready to offer you a wide range of services for the purchase of a suitable pump model - so, you can get not only extensive advice, but also select a Grundfos pump online according to the parameters that are decisive for your choice.

Grundfos drainage pumps are equipped with a built-in thermal cut-out and the sealing chamber is filled with grease. In addition, there is no cooling jacket in such pumps, since the engine is constantly washed and cooled by the working fluid during operation. Also, Grundfos pumps are very compact, which is an additional advantage for easy transportation and installation.

The selection of a Grundfos pump online starts with determining the appropriate installation modification based on the maximum possible solids size in the pumped dirty water. Depending on this indicator, pumps can be intended for:

• pumping water from various tanks at industrial facilities;
• pumping out domestic waste water;
• pumping wastewater from sedimentation tanks and treatment facilities in construction.

The selection of the Grundfos pump is carried out taking into account the required operation option: manual or automatic operation.

However, regardless of the model you choose, all Grundfos pumps have the following advantages:

• long term operation;
• strength and resistance to external influences;
• the ability to successfully pump liquid with any inclusions - both solid and fibrous;
• compact dimensions.

How to choose a pump for a well by pressure and flow?

Choosing a pump for a well is not an easy task, since in order to select a suitable installation, it is necessary to take into account whole line factors:

• well depth - measured, as a rule, with a rail;
• average water level in the well;
• the height of the water column is the difference between the depth of the well and the level of water in it;
• dynamic level (at which water, when pumped out of the well, begins to decrease);
• the diameter of the well rings - to determine the total volume of water;
• water quality - allows you to determine the percentage of impurities and solid particles in the composition of water;
• maximum and average volume of water - to select a pump of the appropriate power.

Based on all the criteria that affect the choice of installation for a well, our specialists are ready to offer you the selection of a pump by set and flow rate online, which will save you time and make the search process desired option comfortable and convenient.

To choose the right pumps for water for a summer residence, seasonality should be taken into account. So, the choice of pumping equipment for the summer season is much wider than the range of universal pumps. The presence of a hydroaccumulating tank in the pump structure is also important. It performs the function of protection against hydraulic shocks, and is also used as a spare source of water in emergency situations. Automation of the pump is provided by pressure.

Selection of a heat pump for a boiler: important nuances

Selection heat pump for the boiler is a responsible event, since this device is designed to provide the process of heating the house or heating water in the boiler. It is best to select the pump according to the power of the boiler. So the smaller the diameter heating pipe, the more power the pump needs to be used.

Speaking about the advantages of heat pumps, it should be noted their cost-effectiveness, which is achieved due to the high efficiency coefficient. So, consuming 1 kW of electricity, such a device produces four times more heat, which is especially nice, given the lack of fuel costs. Other advantages of heat pumps include absolute fire safety and environmental friendliness. An additional argument in their favor is a long service life - up to 30 years, as well as minimal maintenance costs.

Company Grundfos produces the widest range of pumping equipment in several segments:

• Heating, ventilation and air conditioning
• Industrial equipment
• Water supply and sewerage

Wet rotor pumps, in-line pumps, monobloc and cantilever pumps. Delivery up to 2000 m3/h, head up to 140 m.

Multistage pumps of the CR family and installations based on them, cantilever pumps. Delivery up to 2000m3/h, head up to 480 m.

Household and industrial borehole pumps, household pumps and mobile automatic water supply stations, pumps for drainage and sewerage, automatic domestic and industrial sewer installations. Delivery up to 12600 m3/h, head up to 650 m.
Dosing pumps. Capacity up to 990 l/h, head up to 180 m.

Feature of heating system pumps Grundfos

Words " heating circuit already contain features in themselves.
So, if we say “circuit”, then we mean a circulating (closed) system.
When we say "heating circuit", we mean high temperature.
If the system is circulating, what makes up the pressure? Of course from hydraulic losses.

What is the cost responsible for?

For compensation of heat losses in heated areas, that is, the amount of heat transferred to the room.
If the boiler has a night mode, the pump must be installed on the supply line. If the boiler has a night mode, then it lowers the temperature of the coolant. Switching between day and night modes takes place via the heating medium in the flow line of the heating system.
Type of pressure characteristic centrifugal pump obtained by changing mutually influencing parameters of pressure and flow due to a change in the flow area of ​​the pressure pipeline from completely closed (the flow is zero, and the pressure is maximum) to completely open without a pressure pipeline (the flow is maximum, and the pressure is zero).

This is how a series of points on the graph is obtained - the pressure characteristic of the pump, exclusively experimentally.
Systems are open(there is a si link so the static height parameter must be taken into account)

Closed(there is no connection with the atmosphere and therefore static pressure, in a certain sense, can be neglected).

Open systems are used in water supply systems when water needs to be supplied for distribution. Closed systems are used in, ventilation and air conditioning where circulation is present.

Most systems use multiple pumps at once. There are two types of pump connection - series (used for very high pressure, for example, with reverse osmosis) and parallel (most often used in systems with redundancy and cascade connection).
When several pumps are running at the same time, depending on the type of connection, the overall pumping characteristic looks like the one shown in the figure above.

It should be noted that it is often forgotten that doubled flow and head parameters are possible only at the extreme points of the characteristics, but in fact, in the working areas of the pumps, only an increase in these parameters occurs, but not a doubling. In any case, it is required to build a network characteristic and search.

That's all I wanted to describe in this article, we will describe in detail each pump separately.

We offer:

Significant savings due to the selection of analogues;

Reducing the time spent on the selection of pumps Grundfos (Grundfos) and other equipment;

Optimization of delivery schedules and shipments of equipment;

We reduce costs:

Call us and tell us about your desire to use this service, or use the ONLINE application form. After a preliminary discussion of the project, send us the necessary documentation - equipment questionnaires, specifications, technical specifications. connection conditions and an explanatory note.

After clarifying all the details, we develop our technical and commercial proposal (TCP) and send it to you.

The specification of the TCH compiled by us is absolutely identical to the design one. Any replacement of equipment is justified from a technical and economic point of view. All replacements and configurations are supplemented with comments. We will explain all the details of the selection of new equipment and the proposed modernization of the project.

We conduct a comprehensive audit:

When checking the correct selection and operation of equipment, we will identify:

Errors and inaccuracies in the selection of equipment;

Misuse or inappropriate use of equipment and accessories;

Discontinued products and spare parts;

The ability to reduce the cost of additional purchases of additional components.

We optimize the project:

For optimal selection equipment in accordance with technical requirements project, after the audit we will select the best equipment for each individual facility. Project documentation is developed by us in accordance with the current regulatory documents and to the extent necessary for approval. During optimization, modern computer technologies and specialized software packages are used, which ensure the accuracy of engineering calculations, estimate documentation and the quality of graphic display of project documentation. When selecting, first of all, the price-quality ratio is taken into account, as well as equipment with a minimum delivery time or from a warehouse is selected.

With a complex order of equipment, we provide significant discounts.

In addition to the big savings, this guarantees the delivery of the object on time or ahead of time.

We deliver on time:

When planning the delivery schedule, we make an accurate calculation of the dates of receipt of the equipment. Compliance with deadlines and control are made at all stages of delivery.

Warranty service of the supplied equipment is carried out by our Service-center- certified service partner of companies GRUNDFOS, ALFA LAVAL, REFLEX.

We remind you that the service "Audit and optimization of projects" absolutely FREE. For all questions related to this service, please contact us: