Granflow unv water supply pumping station based on dpv pumps.

Modern realities civil engineering are such that high-rise apartment buildings are becoming increasingly common, where more residential premises can be obtained in a smaller building area.

However, water supply systems in the city, provided by water utilities, can guarantee a pressure at the entrance to the metering unit of no more than 25-30 meters, which is not enough to ensure water supply in high-rise buildings. For this purpose, a pumping unit for water supply is used.

A pumping station for water supply is complex equipment consisting of pumps that directly lift water to the required height, shut-off valves and manifolds, inlet and outlet, as well as a control cabinet that controls the pumps. All these elements are mounted on a single frame and form a single whole.

The main elements in a pumping installation for water supply are pumps and a control system.

The pumping unit for water supply systems of the GRANFLOW brand is assembled on the basis of pumps from two European manufacturers:

1. Vertical multistage pumps manufactured by DP-PUMPS in the Netherlands. The hydraulic part of the pumps is made of stainless steel, and wide model range allow you to select pumps to suit any needs for water supply systems of both small houses and large residential complexes. Highly efficient electric motors operate almost silently, thanks to which water supply pumping units based on these pumps can be installed directly under residential premises.
2. Cantilever pumps manufactured by EBARA Corporation. This concern, with headquarters in Japan and factories around the world, also produces cantilever monoblock pumps with a hydraulic part made of stainless steel. Pumps are shipped from factories and Italy. Absolutely every pump, as in the case of the DP-Pumps company, is tested at the factory, which guarantees 100% quality control of the purchased products.

The second main element in a pumping installation for water supply is the pump control cabinet. GRANFLOW installations use GRANTOR control cabinets, which provide control and protection of electric motors. It is important to understand that the pumping station for water supply systems must be provided with a control cabinet only with frequency regulation. The use of a frequency converter is necessary for smooth and constant maintenance specified pressure in the system without surges and dips.

The GRANFLOW water supply pumping station produced by ADL is the most optimal choice based on price, quality and speed of delivery of the installation to your site. The Academy of Heat company, being official distributor The manufacturer's plant carries out the selection of pumping units according to the customer's parameters, consultations and assistance in selection to design organizations, as well as delivery, commissioning, warranty and service.

The GRANFLOW pumping unit for water supply systems is manufactured both serially and to individual customer requirements, be it remote control or installation more pumps, both main and backup.

We strongly recommend that you do not select pumping units yourself. You can always fill out a questionnaire and send it to the office of our company, where we will select equipment specifically for your requirements.

When choosing a pumping unit, the following conditions must be taken into account - the pumps included in the water supply pumping unit must not only provide the maximum hourly flow rate according to the working/standby operating principle, but also the minimum hourly flow rate. The fact is that the maximum hourly flow rate at which the pump reaches maximum power, it lasts only 4-5 hours a day, while the rest of the time the load is no more than 10-15% of the nominal value. In this case, pumps selected for maximum flow rates operate in minimum load mode, and frequency converter“drives” the pump electric motor to the most minimal mode. In this case, electricity is spent on heating the electric motor, which is not in the best possible way affects its durability.

You can find out more information about the selection of a pumping unit for water supply at the office of our company by simply calling us. Employees of the Academy of Heat company are always ready to answer all your questions.

The GRANFLOW pumping station has the following markings, which allows you to easily determine the composition of the pumping unit, its type, the pumps used and their number.

Granflow Pumping Unit. General drawing.

Design and scope of delivery

• From 1 to 6 centrifugal vertical multistage pumps DPV (DP-Pumps, the Netherlands), the hydraulic part of which is made of stainless steel.
• The pumps are installed on a common base plate made of steel.
• A shut-off valve is installed at the inlet of each pump, and a check and shut-off valves are installed at the outlet.
• The installation includes a membrane tank with a capacity of 8–24 liters to protect against water hammer during startup. The tank body is made of steel, the membrane is made of butyl.
• Stainless steel suction and pressure manifolds are installed at the inlet and outlet of the unit.
• A pressure switch or pressure sensor (if the installation has frequency regulation) is installed on the pressure line, which ensure automatic operation installations.
• To prevent the pump unit from running dry, it includes a dry-running protection relay.
• Pressure gauges on the suction and pressure lines.
• Electrical control cabinet "Grantor" with relay or frequency regulation.
• The unit is supplied fully assembled, configured and tested at the factory; it only needs to be connected to the pipeline and connected to the electrical network.

The quality control system used at the manufacturer includes both testing of the installation as a whole and testing of components, which can significantly increase the reliability of pumping units. Distinctive Features Granflow pumping units are.

Design and scope of delivery

• From 1 to 6 centrifugal vertical multistage pumps DPV (DP-Pumps, the Netherlands), the hydraulic part of which is made of stainless steel.
• The pumps are installed on a common base plate made of steel.
• A shut-off valve is installed at the inlet of each pump, and a check and shut-off valves are installed at the outlet.
• The installation includes a membrane tank with a capacity of 8–24 liters to protect against water hammer during startup. The tank body is made of steel, the membrane is made of butyl.
• Stainless steel suction and pressure manifolds are installed at the inlet and outlet of the unit.
• A pressure switch or pressure sensor (if the installation has frequency regulation) is installed on the pressure line, which ensures automatic operation of the installation.
• To prevent the pump unit from running dry, it includes a dry-running protection relay.
• Pressure gauges on the suction and pressure lines.
• Electrical control cabinet "Grantor" with relay or frequency regulation.
• The unit is supplied fully assembled, configured and tested at the factory; it only needs to be connected to the pipeline and connected to the electrical network.

The quality control system used at the manufacturer includes both testing of the installation as a whole and testing of components, which can significantly increase the reliability of pumping units. Distinctive features of Granflow pumping units are: