1866 – Foundation of the company LEDERLE by Wilhelm Lederle
1954 – Development of our leakage-free canned motor pumps
1967 – New company building incl. administrative department designated for canned motor pump production in Gundelfingen
1979 – Development of seal-less pumps with magnetic drive
1997 – Formation of Dalian HERMETIC Sealless Pumps Co., Ltd. in China as a Joint Venture
2012 – Delivery of the world’s largest canned open-cell engine with a capacity of 670 kW
2015 – HERMETIC produced the heaviest and largest canned motor pump – with 20 tons and a total height of over 6 meters
2016 – 150 years of company history, 60 years HERMETIC-Pumpen GmbH and the grand opening of the new production hall
Pump Types Overview:
- Canned Motor Pumps
- Liquid Ring Vacuum Pumps
- Radial Pumps
- Submersible Pumps
- Inline Pumps
The different Pump Types in more Detail
Canned Motor Pumps
- Delivery Rate: up to 1.600 m³/h
- Delivery Head: up to 2.300 m
- Pressure: up to 1.200 bar
- Viscosity: up to 300 mm²/sec (cSt)
- Temperatures: -160°C to +450°C
- pH-values: 1 – 14
- Gases: up to 10 %
- Particles: up to 2 % (max. 1 mm)
- Installations: horizontal, vertical
- Submersibility: immersed, totally submerged
- Depth: 2 – 20 m
- sealless design possible
- ATEX: suitable for Ex Zones 2, 1
- API, ISO, EN Standard
- Drive: Electro
Liquid Ring Vacuum Pumps
- Delivery Rate [Q]: max. 3.000 m³/h
- Pressure: max. 2.500 mbar (abs)
- Pressure Rate: PN 10
- Viscosity: max. 20 cSt
- Temperatures: -20 °C to +100 °C
- pH-values: 2 – 14
- Gases: 80 – 100 %
- Particles: none
- Installation: horizontal
- Submersibility: none
- self-priming possible
- sealless design possible
- ATEX: suitable for Ex Zone 2, 1
- no specific international standard
- Drive: Electro
Inline Pumps
- Delivery Rate: up to 184 m³/h
- Delivery Head: up to 80 m
- Pressure: up to 16 bar
- Viscosity: up to 300 mm²/sec (cSt)
- Temperatures: -50°C to +120°C
- pH-values: 1 – 14
- Gases: up to 10 %
- Solids: up to 2 % (max. 1 mm)
- Installations: horizontal, vertical
- Submersibility: none
- sealless design possible
- ATEX: suitable for Ex Zones 2, 1
- ISO, EN Standard
- Drive: Electro
Submersible Motor Pumps
- Delivery Rate: up to 1.600 m³/h
- Delivery Head: up to 1.200 m
- Pressure: up to 100 bar
- Viscosity: up to 300 mm²/sec (cSt)
- Temperatures: -160°C to +250°C
- pH-values: 1 – 14
- Gases: up to 10 %
- Solids: up to 2 % (max. 1 mm)
- Installations: vertical
- Submersibility: immersed, totally submerged
- Depth: 2 – 20 m
- sealless design possible
- ATEX: geeignet für ExZonen 2, 1
- API, ISO, EN Standard
- Drive: Electro
Radial Pump
- Delivery Rate: up to 1.600 m³/h
- Delivery Head: up to 2.300 m
- Pressure: up to 1.200 bar
- Viscosity: up to 300 mm²/sec (cSt)
- Temperatures: -160°C to +450°C
- pH-values: 1 – 14
- Gases: up to 10 %
- Solids: up to 2 % (max. 1 mm)
- Installations: horizontal, vertical
- Submersibility: none
- sealless design possible
- ATEX: suitable for Ex Zones 2, 1
- API, ISO, EN Standard
- Drive: Electro
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