KVC 55-50 M Multistage centrifugal pump DAB.KVC

Product detailed description

This pump is commonly used in industrial and domestic applications where high-pressure delivery of clean, non-corrosive liquids is required. It is suitable for use in water supply systems, irrigation, and pumping systems in commercial and residential buildings. The pump is designed for environments where the pumped medium is chemically neutral and free from solid particles or oils. Installers typically encounter this model in systems requiring a compact, high-efficiency solution with a long service life.

The inline design allows for space-efficient installation, and the pump is compatible with systems that require vertical mounting. The motor is externally cooled and features built-in thermal protection for single-phase models, ensuring safe and continuous operation. The operating temperature range of the pumped liquid is from 0°C to 35°C for domestic use and up to 40°C for other applications.

Technical parameters

Degree of protection	IP55
Insulation class	F
Manufactured according to standards	CEI 2-3 and CEI 61-69 (EN 60335 – 2 – 41)
Code	102990140
Brand	IVAR

The IP55 rating ensures the pump is protected against dust and water jets, making it suitable for outdoor or semi-industrial environments. The F insulation class indicates the motor can withstand higher temperatures, improving durability under continuous operation. These parameters are essential for determining the suitability of the pump for specific installation conditions and for ensuring compliance with electrical and safety standards.

Installation and connection

The pump features an inline configuration with a polymeric base body and metal-threaded inserts for suction and discharge ports. Installers should ensure that the suction and discharge piping are aligned with the pump’s inlet and outlet to prevent misalignment and vibration. The pump is connected using standard thread types, and all connections must be tightened to the manufacturer’s torque specifications. It is important to check the alignment of the motor and pump shaft to prevent premature wear of the mechanical seal. Common installation errors include improper grounding, incorrect motor overload protection for three-phase models, and failure to bleed air from the system before starting.

Compatibility and accessories

The IVAR KVC 55-50 M is compatible with systems that require a vertical multistage pump with a flow range of 50 to 200 l/min and a head up to 113 m. It is typically used with non-corrosive, non-viscous liquids and must be paired with an appropriate electrical supply. For three-phase models, an overload protection device must be installed according to current standards. No additional accessories are required for basic operation, but installers may need to order mounting brackets or vibration dampers depending on the installation site.

Technical background for designers

The pump operates on a multistage centrifugal principle, where multiple impellers are arranged in series to increase the pressure of the pumped liquid. The hydraulic components are made from technopolymer and stainless steel (AISI 304), ensuring resistance to corrosion and wear. The mechanical seal is made from carbon and ceramic, providing a durable seal for the stainless steel (AISI 303) drive shaft. The motor is an asynchronous, enclosed unit with external cooling, and the insulation class F allows for higher operating temperatures. The inline design allows for direct coupling between the motor and pump, reducing vibration and improving efficiency. The material selection ensures compatibility with a wide range of non-aggressive liquids and contributes to the pump’s long service life.

Service and operation

The pump requires minimal maintenance, but regular checks should be performed to ensure the mechanical seal and bearings are functioning correctly. The pump should be inspected for leaks, unusual noise, or vibration, which may indicate misalignment or wear. The motor should be kept clean and free from dust to maintain cooling efficiency. No specific service intervals are provided in the technical documentation, but routine inspections are recommended to ensure continued performance and safety.

Frequently asked questions

Can the pump be used with liquids other than water?
Yes, the pump is suitable for non-corrosive, non-viscous liquids with properties similar to water. It is not recommended for use with mineral oils or aggressive chemicals.

Is a three-phase model available?
Yes, the pump is available in three-phase configurations. However, an overload protection device must be installed according to current standards.

What is the maximum operating temperature for the pumped liquid?
The maximum operating temperature is 35°C for domestic use and 40°C for other applications. Exceeding these limits may affect the pump’s performance and longevity.

Can the pump be installed in a horizontal position?
No, the pump is designed for vertical installation in an inline configuration. Horizontal mounting is not recommended and may lead to operational issues.