KQSN series high-efficiency double-suction centrifugal pumps are generally used to transport clean water without solid particles or other liquids with physical and chemical properties similar to water. They can be widely used in: high-rise building water supply, building fire protection, central air-conditioning water circulation, circulating water supply in engineering systems, Cooling water circulation, boiler water supply, industrial water supply and drainage, water conservancy irrigation, especially suitable for water plants, paper mills, power plants, thermal power plants, steel plants, chemical plants, water conservancy projects, water supply in irrigation areas, etc. Corrosion-resistant or wear-resistant materials (such as spray-coated SEBF materials or 1.4460 duplex stainless steel materials) can be used to transport corrosive industrial wastewater, seawater, and rainwater containing suspended solids.

The KQSN series has a total of 372 products with specifications and parameters, which can provide a variety of performance working conditions with different impeller diameters and different speeds (see the model spectrum for details).

Speed: 990, 740, 585, 490, 372 and 298r/min.

Inlet and outlet diameter: 700-1600mm, its flange complies with GB/T17241.6 PN1.0 (nominal lift ≤75m), GB/T17241.6 PN1.6 (nominal lift >75m),Can be used with flanges of the same level as the following standards: BS 4504, ISO 7005.1, DIN 2533.

Flow Q:3340-3000om3/h.

Lift H:7-180m.

Temperature range: Maximum medium temperature ≤80℃ (standard configuration), 80~130℃ (special configuration, please consult the technical department for details) Standard test pressure: 1.2* (lift at closing point + inlet pressure) or 1.5*(Lift at working point + inlet pressure).

Allowed transport medium: clean water, if the medium is other liquids, please contact our company.

Ambient temperature and altitude:

1. The ambient temperature does not exceed 40°C. If it exceeds, a motor with higher output power or a special motor needs to be used.
2. The altitude does not exceed 1000m. If it exceeds, a motor with a higher output power or a special motor needs to be used; rising and falling atmospheric pressure will affect the normal operation of the water pump, so special attention must be paid to the selection. If you encounter the above special circumstances, you can consult the technical department.

This series of products takes into account high efficiency and low cavitation, with high efficiency and wide efficient area. The performance is overall higher than the energy-saving standards and other domestic manufacturers’ products, the efficiency of some models is higher than that of foreign brands, and the cavitation performance is better than the national standard. The parameters of this series of products can fully cover the products of all major manufacturers currently on the market, and it is the product series with the largest number of models and the most complete range.

Integrated design of three-dimensional hydraulic structures, from water body modeling, hydraulic optimization analysis, three-dimensional structural design to three-dimensional software virtual factory trial installation, is completed in one go. In addition to comprehensive analysis and calculation of hydraulics, structure, mechanics, vibration, etc., the design process also takes into account the most reasonable structural layout and high operational reliability.

The pump has no coupling, horizontal structure, only primer, packing seal or mechanical seal.

Charged items: – Thin oil lubricated shaft pad, – Paint/topcoat suitable for drinking water, – Common base for horizontal pump and motor, – Complete supply of motor, – Material testing, – Coupling and coupling protective cover, – pressure gauge, a cyclone separator and pipeline, – exhaust valve, a bearing temperature measuring device (PT100)

Please indicate the materials of the main parts when ordering. If you have special requirements for pumps and motors, you can negotiate with our company about the technical requirements.

1Vibration measuring instrument

1 set of sealed lines with a cyclone separator (to handle contaminated fluids),

Includes: one cyclone separator (stainless steel), one flow meter (stainless steel), one stop valve (stainless steel), one joint and pipe (stainless steel)

1 Manual exhaust valve (stainless steel) including: one connector

△User ordering is not limited by the parameters listed in the sample performance curve and technical data table. The parameters listed in the sample are only special typical point parameters for user selection reference. The company can provide products according to the flow and head operating points required by the user’s design.

△If the performance parameters are similar, the standard impeller pump type (M type) and the high-speed pump type are generally preferred.

△If the flow and lift parameters required by the user are not in the large flow and low lift working condition area of the product, the motor power can be calculated and determined based on the actual working point and appropriately reduced.

△If you have special selections beyond the sample contents or if you have any questions about the sample contents, please consult Shanghai Kaiquan Technology Center directly.

Each pump needs to undergo performance testing, and operating data can be guaranteed without acceptance. Acceptance tests can also be conducted in accordance with ISO 9906 Gr.2, DIN1944/Ⅲ, GB 3216C or other equivalent international standards.

The quality of KQSN series products is guaranteed by a certified quality assurance system that complies with DIN ISO 9001/EN 29001 standards.

Using the ternary fluid theory and introducing internationally advanced flow and structural performance simulation analysis software, we can accurately simulate the internal flow state of the water pump, the cavitation multi-phase unsteady flow and the dynamic response of structural components, and master the pressure pulsation, cavitation flow characteristics and their response. The influence law of the internal flow field is analyzed and calculated to calculate the best hydraulic model: Smart flow pump to ensure high efficiency and wide working area.