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Lutz B80 KGK G3 - Multi-stage Plastic Centrifugal Pumps

07-08-2010 04:47 PM CET | Industry, Real Estate & Construction

Press release from: Lutz Pumpen GmbH

There is growing demand in the area of flue gas cleaning, gas scrubbing or surface cleaning for vertical submersible pumps that can cope with high delivery pressures. These types of pumps are necessary to enable more reliable operating sequences and faster cleaning processes.

However, state-of-the-art technology used in metal pumps cannot simply be applied to the design of plastic pumps without further modification due to the technical characteristics of the material. Since the thermal resilience of plastic is limited, plastic pumps cannot handle the same high bearing loads that a metal pump can withstand.

As impeller dimensions increase, so too do the demands placed on main and intermediate bearings in single-stage pumps with immersion depths greater than 2000 mm when it comes to balancing the high radial forces generated by these pumps operating at high speeds. This exposes the limitations of thermoplastic materials.

For this purpose, the modular system was applied in order to develop a two-stage pump series with a nominal speed of 1450 rpm, which meets the requirements of operational safety and system availability even during continuous operation. Two impellers arranged one behind the other achieve pumping heads of up to 85 m. Two-stage pumps offer significantly better bearing wear characteristics than single-stage pumps operating at high speed when it comes to pumping fluids containing solids or media with low lubricating properties.

Another important advantage is the significantly smaller installation dimensions – an important aspect of plant engineering. Thanks to the use of 4-pole drive systems, the pumps generate significantly lower levels of noise.

The new two-stage centrifugal pumps can achieve flow rates of up to 280 m³/h and pumping heads of up to 85 m. The temperature limits range from -10 to +90°C depending on the choice of material. The pumps can be supplied with immersion depths of up to 4000 mm. Gas seals to protect the bearing and motor are fitted as atmospheric shaft seals. The shaft can also be sealed using single-acting standard balanced mechanical seals.
Axial forces are absorbed by greased/oiled rolling bearings. Residual radial forces are absorbed by generously dimensioned main bearings which are made of PTFE-GF/ceramic or SiC/SiC depending on the condition of the pumped medium

Polypropylene and PVDF are offered as housing materials. Versions using glass-fibre reinforced or coated polypropylene are available for high-temperature applications.

The two-stage B80 KGK G3 pump series sets new standards in the plastic centrifugal pump segment, which open up new dimensions of reliability and operational safety for plant engineers and operators.

Lutz Pumpen in Wertheim is celebrating its more than 50 years company history. Today, Lutz Pumpen, the “fluid manager” is regarded as one of the world`s leading producers of electric and pneumatic drum and container pumps.

The family-owned Lutz brand today stands for fluid handling. In recent years, Lutz has demonstrated on numerous occasions an innovative potential which has developed into a synonym for complete systems designed to handle any fluid filling and transfer job.

It all began back in 1954 with contract manufacturing. The company relocated to a site in Wertheim and started to produce electrical drum and container pumps. In 1963 the first explosion protection, PTB approved drum pump motor, was introduced. Lutz has a great knowledge concerning the production of explosion protection devices which are particularly used in the chemical industry.

Due to a continuous growth and development of innovations market introduction of the world-wide first sealless pump tube for emptying drums and containers followed in the seventies. Then, the company introduced special laboratory pumps for small quantities as well as mixing pumps. To improve environmental protection the company Lutz Pumpen was awarded in 1987 the Bavarian Gold Price for the first patented new development of a pump tube for complete drum drainage. In 1988 a completely new motor generation for drum and container pumps was developed.

Avoiding emission problems and to guarantee safety at the workplace an emission control drum adapter to attach the pumps was developed. Pump technology was increased in 1993. A modular flow meter system designed for professional fluid handling and measurement was introduced.

1994 the company is continuing to evolve into a systems supplier, offering complete solutions for fluid handling applications. The product range continues to expand and air operated oil free double diaphragm pumps were added.

In 2000, Lutz developed the container pump for safe and quick transfer of chemicals from large containers.

The company introduced enhanced customer service and focus by introducing in 2001 complete pump sets. It received Atex 100a approval for all its motors, pump units and flow meters.

Beside all these product innovations during the last 50 years customers are in the focus of all sales activities. To guarantee customer proximity, Lutz products are available from Lutz representatives in more than 70 countries around the globe. Own offices were set up in the USA, Great Britain, The Netherlands and Hungary.
In 1996 the Lutz quality management system was certified to DIN EN ISO 9001.

In 2003, Heinz Lutz and Jürgen Lutz, shareholders of Lutz Pumpen, took over Jesco Dosiertechnik in Wedemark. This company, which is now called Lutz-Jesco GmbH, offers products to meter, pump and control fluids, gases and systems.

The latest development of Lutz-Pumpen is a fuel-filling system for AdBlue, a reducing agent for Diesel fuel used for the commercial vehicle sector in order to reduce exhaust of nitrogen oxide.

In terms of innovative technology Lutz Pumpen has the leading edge in the manufacture of fuel-filling systems for IBC`s.

The Lutz-Holding GmbH was founded in 2005 to bring all companies and subsidiaries under one corporate governance.

Wolfgang Konrad, Marketing + Communication

Lutz Pumpen GmbH
Erlenstraße 5-7, P.O.Box 1462, D-97864 Wertheim
Tel. (0 93 42) 8 79-220, Fax (0 93 42) 87 94 04,

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