Edur
Edur is a German manufacturer of industrial centrifugal pumps for specific applications.
Edur Pumpenfabrik was founded in 1927 in Kiel and has always focused on developing centrifugal pumps for pumping liquids with air or gas bubbles.
Since a large number of pumps are used for pumping liquid gases, a low NPSH requirement is essential.
Characteristic of a large part of the Edur pumps are the open impellers in combination with a diffuser with guide vanes, see image below.
This construction ensures that there are hardly any axial forces in the pump and the radial forces are largely compensated by the diffuser.
Air or gas bubbles can also be processed much better. In practice it appears that the pumps can process up to 30% air or gas bubbles.
The Edur pumps are also characterized by the very favorable NPSH requirement. This is partly caused by the enlarged suction connection and therefore a low entry speed.
Overview of the pump series:
Edur NUB series:
Closely coupled centrifugal pumps with open impeller in combination with a diffuser.
Suitable for liquids with a light concentration of gas bubbles
Capacity up to max. 600 m3/h
Head up to max. 98 meters
Also available as in-line pumps LUB series up to 220 m3/h and maximum head up to 66 meters.
The pumps are available with a wide variety of shaft seals, both single and double.
It is also possible to supply the pumps with a magnetic coupling.
Edur LB series:
Closely coupled horizontal multi-stage centrifugal pumps with open impellers in combination with diffusers.
Capacity up to max. 65 m3/h
Head up to max. 300 meters
Extremely suitable for pumping liquid gases.
Edur VB series:
Vertical close-coupled multi-stage centrifugal pumps with open impellers in combination with diffusers.
Capacity up to max. 65 m3/h
Head up to max. 300 meters
Edur NH series:
Horizontal multi-stage centrifugal pumps with open impellers in combination with diffusers.
Capacity up to max. 170 m3/h
Head up to max. 300 meters / Pressure up to max. 21.6 bar (LPG s.g. 0.56 kg/dm3)
Extremely suitable for pumping liquid gases.
Shaft seal wide variety of both single and double mechanical seals or magnetic coupling.
Edur Z series:
Horizontal multi-stage centrifugal pumps with open impellers in combination with diffusers.
Capacity up to max. 65 m3/h
Head up to max. 299 meters
Edur FUB series:
Closely coupled centrifugal pumps with withdrawn impeller for pumping liquids with solid components.
Capacity up to max. 390 m3/h
Head up to max. 55 meters
Free dirt passage up to max. 80 mm
Edur S series:
Self-priming centrifugal pumps with open impellers in combination with diffusers.
Capacity up to max. 300 m3/h
Head up to max. 165 meters
Edur SUB series:
Self-priming, close-coupled centrifugal pumps with open impeller in combination with diffuser.
Capacity up to max. 170 m3/h
Head up to max. 66 m
Edur E series:
Self-priming close-coupled centrifugal pumps
Capacity up to max. 7 m3/h
Head up to max. 139 m
Edur PBU series:
Short-coupled multiphase pump
Capacity up to max. 14.5 m3/h
Head up to max. 145 m
Max. concentration of gas bubbles 15%
Very good mixing of the gas bubbles through the liquid with bubbles between 30 and 50 µm.
Very suitable for wastewater treatment plants including DAF units (Dissolved Air Flotation).
Shaft seal wide variety of both single and double mechanical seals or magnetic coupling.
Edur LBU series:
Closely coupled horizontal multi-stage centrifugal pumps with open impellers in combination with diffusers.
Capacity up to max. 60 m3/h
Head up to max. 250 m
Max. concentration of gas bubbles 30%
Very suitable for wastewater treatment plants including DAF units (Dissolved Air Flotation).
Edur LB series:
Closely coupled horizontal multi-stage centrifugal pumps with open impellers in combination with diffusers.
Extremely suitable for pumping liquid gases such as LPG.
Capacity up to max. 60 m3/h
Pressure up to max. 21.4 bar (LPG s.g. 0.56 kg/dm3)
Shaft seal wide variety of both single and double mechanical seals or magnetic coupling.