customers have trusted the innovative DPV stainless steel multi-stage
centrifugal pumps series in diverse applications for the transportation of
their process water. Energy efficient through smart hydraulic design; reliable
through the use of high-quality materials and manufacturing; and versatile due
to the unique modular concept that offers an almost infinite number of
variations in materials, seals, connectors, motors, etc.
The pumps in
the range can be used stand-alone as a process or drinking water pump, or used
in pressure boosting systems for building technology and industry.
Head (H): 5 - 254 mwc
Flow (Q): 1,90 - 125
Ambient temperature: -20 - +40
Liquid temperature: -20 - +140
˚C. DPV125 max +120 ˚C
Advanced hydraulic design with Dutch roots
The complete design of this pump series, as well as the tools
used to make them, are designed and manufactured in the Netherlands. This
results in a particularly energy-efficient design that achieves some of the
highest scores in the market. The most recent addition to the DPV 125 product
range even achieves the highest efficiency in its class.
Other advantages of designing a pump series in house are:
A hydraulic design adapted to the most common pipe diameters
efficient fluid flow-through specially designed pump
base and head piece for high energy efficiency and long life.
Good Net Positive Suction Head (NPSH) values (0.6 - 5.0 mwk at Qopt)
Newest vertical centrifugal pump, DPV 125: highest efficiency in its class
Duijvelaar Pumps introduces the DPV 125. Our most advanced vertical multi-stage centrifugal pump for transporting large volumes of drinking and process water.
It is perfect for the increasing demand for a robust, compact and efficient pump with larger capacity (nominal capacity at maximum efficiency: 125 m3/h). Applications include, for example, water transportation, drinking water and fire-extinguishing systems, boiler feed, district heating, or cleaning and washing facilities.The DPI 125 is not only the most energy-efficient pump in the segment, but also flexible due its compact size, and durable due to its quality materials and construction techniques.
Cavitation is caused by too low suction pressure, in relation to the internal resistance of the liquid in the pump and the vapor pressure of a liquid (the higher the temperature, the higher the vapor pressure). In case of cavitation, pump problems occur because of imploding 'bubbles' generating an intense shock wave. Life expectancy of the pump decreases because of deteriorating of the metal and extra wear on moving parts due to imbalance and decreased cooling and lubricating properties of the cavitating liquid. Without cavitation you are assured of a quiet and long-lasting smooth operating pump.
DP has developed a specially designed low NPSHr impeller and bottom stage casing for the DPV & DPH(S)Ipump rage with significant lower NPSHr value. Due to this special low NPHSr design, the pump can be used in a wider range of applications to ensure high reliability and smooth operation of the pump even in case of low suction pressure and/or high temperature and vapor pressure of the liquid.