KVCX 55-50 T Multistage centrifugal pump DAB.KVCX

Product detailed description

This vertical multistage centrifugal pump is commonly used in industrial and domestic applications where a high head and stable flow are required. It is suitable for integration into heating, plumbing, and irrigation systems where the pumped medium is chemically neutral and free of solid particles. The pump is typically installed in pump rooms, technical basements, or industrial facilities where space is limited due to its compact, inline design. Installers should ensure the system is free of abrasive or corrosive substances and that the liquid temperature remains within the specified limits for continuous operation.

The KVCX 55-50 T is designed for use in closed-loop systems and open systems where the liquid is non-corrosive and non-viscous. It is often used in applications such as water supply for buildings, circulation in heating systems, and irrigation. The inline configuration allows for direct connection to the pipeline, reducing the need for additional fittings and simplifying installation.

Technical parameters

Installation and connection

Installation of the KVCX 55-50 T should follow standard procedures for inline pumps. The pump is connected directly to the suction and discharge lines using the threaded inserts provided in the polymer housing. Installers should ensure that the pipeline is properly aligned with the pump to avoid mechanical stress on the motor shaft. A non-return valve should be installed on the discharge side to prevent backflow, especially in systems with elevated heads.

Common installation errors include incorrect alignment of the pipeline, failure to install a non-return valve, and neglecting to ground the pump properly. To avoid these, the pump should be mounted on a stable base and all electrical connections should be made in accordance with local regulations. The motor must be connected to a power supply with appropriate overload protection, particularly for three-phase models.

Compatibility and accessories

The KVCX 55-50 T is compatible with standard plumbing and heating systems that use non-corrosive, non-viscous liquids. It is typically used in conjunction with pressure sensors, flow meters, and control systems to regulate operation. Installers should also consider the need for a pressure tank or expansion vessel in closed-loop systems to manage pressure fluctuations. Additional components such as filters or strainers may be required to ensure the liquid remains free of particulate matter.

Technical background for designers

The KVCX 55-50 T operates on the principle of a multistage centrifugal pump, where multiple impellers are arranged in series to increase the total head. The hydraulic components are made from technopolymer and stainless steel (AISI 304), ensuring resistance to corrosion and mechanical wear. The mechanical seal, made from carbon and ceramic, provides a durable and leak-free seal for the motor shaft, which is constructed from AISI 303 stainless steel.

Integration into a system requires careful consideration of the flow and pressure requirements. The pump is designed for use with clean, non-aggressive liquids and should not be used with oils or solvents. The operating temperature range is a key factor in determining the suitability of the pump for a given application. The motor is an asynchronous, closed unit with external cooling, and single-phase models include built-in thermal protection and a permanently connected capacitor.

Service and operation

Regular maintenance is essential to ensure the long-term performance of the KVCX 55-50 T. Installers should periodically check the mechanical seal for signs of wear and ensure the pump is free of blockages. The motor should be inspected for dust accumulation, and the electrical connections should be verified for tightness and insulation integrity. No specific service intervals are provided in the technical data, so maintenance should be carried out based on system performance and operating conditions.

Frequently asked questions

Can the KVCX 55-50 T be used with a frequency converter?
Yes, the pump can be connected to a frequency converter for variable speed control. However, the motor must be compatible with the converter's output and the system must be designed to handle the resulting flow and pressure variations.

Is the KVCX 55-50 T suitable for use with hot water?
No, the pump is only suitable for liquids with a maximum temperature of 35 °C for domestic use and 40 °C for other applications. Exceeding these limits may damage the internal components and reduce the service life of the pump.

Can the pump be installed in a vertical position?
Yes, the pump is designed for vertical installation and is suitable for inline mounting in pipelines. The housing and internal components are configured to allow for stable operation in this orientation.

What type of protection is required for three-phase motors?
Three-phase motors require external overload protection installed according to current standards. This is not included with the pump and must be added separately to ensure safe operation.