Grundfos Crn Vertical Multi-Stage Centrifugal Pump Commercial Air Conditioning Heating Industrial Water Supply and Transportation

Application Fields: It is applicable to a wide range of fields, including commercial heating, air conditioning, water pressure boosting, district heating and cooling, machining, cleaning, water supply, wastewater treatment in industrial production, as well as seawater desalination, drinking water treatment, municipal water transmission, irrigation, solar water systems, and water supply for residential communities and buildings.

Product Structure: The suction and discharge ports are on the same horizontal plane. The part of the pump body in contact with the liquid is made of high - grade stainless steel (EN 1.4401). It has a built - in thrust control device and uses a standard motor. The Grundfos cartridge shaft seal improves reliability and maintenance convenience. Electrical energy is transmitted through a split - type coupling, and the pipeline is connected by a PJE coupling. It is equipped with a 3 - phase asynchronous motor with a cooling fan and feet.

Technical Parameters
Liquid Parameters: It mainly transports water. The temperature range is -20 - 90°C, and the operating temperature is 20°C. The density is 998.2 kg/m³.
Performance Parameters: The pump speed is 2984 revolutions per minute. The rated flow rate is 255 m³/h, the rated head is 220 meters, the maximum head is 284.5 meters. There are 6 impellers (2 of which are reduced - diameter impellers). The shaft seal configuration is single - seal, and the main shaft seal model is HQQV. It has obtained CE, UKCA, and SEPRO certifications, and has the ACS certification for drinking water. The curve tolerance complies with the ISO9906:2012 3B standard.
Material Information: The base is made of stainless steel (EN 1.4408, ASTM A351 CF8M), the impeller is made of stainless steel (EN 1.4401, AISI 316), the bearing is WC/WC, the supporting bearing is Graflon, the thrust control device uses SiC/WC, and the materials meet European standards.
Installation Parameters: The maximum ambient temperature is 55°C, the maximum operating pressure is 40 bar, and there are different pressure limits at different temperatures (25 bar / 90 °C, 40 bar / 80 °C). The interface model is PJE. The inlet and outlet sizes are both DN 200. The pipeline connection pressure rating is PN 40, and the motor flange size is FF600.
Electrical Data: The motor meets the IEC standard, with the model INNOMOTICS. The rated power is 200 kW, the power supply frequency is 50 Hz, the rated voltage is 3 x 380D/660Y V, the rated current is 345/199 A, the starting current is 790%, the power factor is 0.92, the rated speed is 2982 revolutions per minute. The IE efficiency class is IE3 (full - load efficiency 95.8%, 3/4 - load efficiency 96.1%, 1/2 - load efficiency 95.6%). The number of motor poles is 2, the enclosure class (IEC 34 - 5) is IP55, the insulation class (IEC 85) is F, and it has built - in PTC motor protection.

CRN Stainless Steel Vertical Multistage Centrifugal Pump: Strong Corrosion Resistance

The CRN stainless steel vertical multistage centrifugal pump is an in-line multistage pump, and different flow rates and pressures can be selected according to needs. Made of high-grade AISI 316 stainless steel, it is highly suitable for various complex liquids in applications such as ultrafiltration, reverse osmosis, machine tools (cooling lubricants), distillation systems, swimming pools, oils, alcohols, acids and alkalis, process water systems, and processing operations.

Grundfos also provides a variety of CRN stainless steel vertical multistage centrifugal water pumps approved by ATEX, which can be selected according to different locations, degrees of danger, and possible hazardous situations. The pumps approved by ATEX are suitable for potentially explosive environments, which are usually composed of air and combustible substances (such as gases, vapors, mists, or dusts). Once ignited, these environments may cause an explosion that can spread.