Verdermag
Mag Drive Centrifugal Pumps
The series of mag drive centrifugal pumps from Verder consists of a wide range of both metallic and non metallic pumps. Verder has more than 40 years of experience in mag drive centrifugal pumps and is an expert in choosing the most adequate pump for your pumping application.
The Verdermag series of pumps comprises the metallic Global and the non-metallic heavy duty TB, U, V&W series and the normal duty V-MD, GPMD and GLMD versions. The Verdermag range is therefore a complete, well-balanced series of magnetically coupled centrifugal pumps.
As with all series of Verdermag centrifugal pumps, emphasis is on maximum interchangeability and quality improvements, hence all products are covered by a two-year guarantee, as well as the standard Verder warranty package.
Features and advantages
-Simple by design - Fewer parts are used in the whole pump than most conventional seal cartridges ensuring easy maintenance and assembly.
-Mag drive coupled: completely leak free.
Mag drive centrifugal pumps are being used in a wide range of industrial areas:
-Chemical industry
Acrylic acid, 50% aluminum chloride, hydrofluoric acid 50%, hydrogen sulfide, 85%, sulfuric acid, 98%, ammonia, phosphate and many others
-Electronics industry
Plating, etching, ferric chloride, hydrochloric acid 37%, sodium hydroxide 50%
-Mining
Brine with uranium solids, H2O, soda ash, HCl
-Galvanic industry
Plating, etching, filtration
-Pharmaceutical industry
Sodium hydroxide 50%, caustic soda, hot oil, solvents
-Steel industry
Hydro chloric acid, pickling liquor, sulfuric acid
Working principle
Although each mag drive pump series -depending on its design- has its own characteristics, all mag drive pumps work with a magnetic coupling.
The principle of a magnetic coupling
A magnetic coupling consists of two magnet assemblies. One is the outer assembly (the drive magnet) and the other is the inner assembly (the driven magnet). The outer assembly is connected to a motor and the inner assembly is directly or indirectly attached to a pump impeller. As illustrated, at rest, the magnet components of the outer assembly are aligned with their counterparts in the inner assembly. When load (torque) is applied, the coupling deflects angularly and the magnets create a force of simultaneous attraction and repulsion. This force is used to transfer torque from the motor to the impeller.
This permanent magnet coupling creates neither slippage nor induction currents during rotation. If excessive torque is applied, the magnets will de-couple. The magnets will not re-couple unless the pump is stopped. There is no energy loss in a permanent coupling unless an electrically conductive containment is placed between the outer and inner magnets. If an electrically conductive material is used for the containment, Eddy Currents will be generated which will cause some energy loss.
Overview of Pump Series
Series V-MD
The wide choice of V-MD pumps is based upon the most common OEM requirements for optimum flow and head characteristics. At least 10 models are available in PP and/ or E-TFE. The major advantage for using the V-MD pumps is total product containment; no unexpected leakage. Connection are hose design or threaded.
Series GPMD and GLMD
The GPMD and GLMD series are mid capacity mag drive pumps with a very good price/quality relation. The pumps are available in PP and ETFE (GPMD) and in ETFE lined cast iron casing (GLMD). In general design the GPMD and GLMD models do have some interchangeable parts when comparing ETFE built versions.
Series TB, U and V&W
Verder offers you the newest mag drive series, with thrust balancing (TB series) and universal purpose pumps (U series). Also available is the V&W series, based upon the TB series, vertical inline pumps with the same benefits and features as the TB series. The patented Thrust Balancing Design eliminates axial thrust bearings and provides the basis for a controlled internal environment. This design minimizes the issue of secondary containment by providing secondary bearings.
Series GPSP
The GPSP self priming mag pump is a high quality mag drive centrifugal pump with best efficiency and fastest working duty points. Model GV is constructed of PP (housing material) whilst model GV(F) is constructed of ETFE. Material choice on bushing and O-ring is carbon/FPM, ceramics/FPM or PTFE/FPM to provide utmost application possibility.
Series Global
Metallic mag drive series with great possibilities to cover requirements according to ISO 2858, high pressure system Pumps, and more basic pumps (style 1 Models).
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