The Laing DDC is an electronically commutated spherical motor pump, with an expected service life of 50,000 hours if pumping water or a mixture of water and glycol. The only moving part in a spherical motor pump is a spherically shaped rotor/impeller unit, which is seated on an ultra-hard, wear-resistant ceramic ball. The conventional shaft, shaft bearings and shaft seals have been eliminated. The spherical bearing of the rotor/impeller unit on the ceramic ball offers a number of advantages. One such advantage is that the occurrence of bearing play and the associated increase in noise is not possible due to the principle involved. Consequently, the pump continues to work quietly throughout its entire service life. The bearing is self-realigning. It is lubricated directly by the fluid being pumped (wet rotor design). This means that the pump is maintenance free. Since the rotor is always magnetically held in the designated position, small particles of dirt do not present a problem. Under normal conditions, it is impossible for the rotor to become locked. Reliable start is also ensured even after long periods of shutdown. The permanent magnet rotor/impeller unit is driven by the magnetic field generated by the surrounding stator. The stator is wrapped entirely around the rotor. As a result, the entire pump is only slightly taller than the rotor itself, measuring only 38 mm (1.5 inch) in height, perfect for applications where space is limited. The spherical motor design permits economical operation with comparatively high output. Supply voltage variation provides a simple means of controlling the speed of the DDC pump over a large output range. All parts in contact with the medium are corrosion resistant.
Technical data
Dimensions: 90x88x38 mm
Motor design: Electronically commutated spherical motor
Rated voltage: 12 V DC
Power consumption: 12 W
Volatge Range: 8 to 13.2 Volt
Water head at 12 V: 3.7 m
Max. flow rate: 420 l/h
Acceptable media: Water, water/glycol mixtures
Max. system temperature: 60° C
Wetted parts: Stainless steel 1.4571, PPS-GF40, EPDM O-ring, aluminium oxide ceramic ball, carbon bearing cap
Connectors: 2x 3/8 inch hosebarb
Manufacturer brochure:
http://lowara.de/literature/#product/1304
