DAB A Circulator pump with threaded ports for circulating hot water in small closed and pressurised or open tank civil and industrial community heating and air-conditioning systems.
Pump body in cast iron and motor casing in die-cast aluminium. Technopolymer impeller and tempered stainless steel driving shaft mounted on graphite brushings lubricated by the pumped liquid itself. Flanged vents, (threaded series A), provided with threaded connectors for controlling gauges. Stainless steel protective rotor sleeve, stator sleeve and closing flange. Ceramic thrust bearing, E.P.D.M. 'O' rings and brass air outlet cap. The two-pole asynchronous motor with wet rotors designed for three-speed operation, single-phase version, for two-speed operation, for three-phase version. Thermal overload protection incorporated in the single phase version. In the twin version an automatic clapet type valve and blank flange are provided.
DAB AC Electronic Circulators are a new generation of wet-rotor circulators. A combination of frequency converter technology and permanent magnet motor place the pumps at the top of the energy labelling scale (A). Energy savings approx. 30% on full-load operation and over 60% on partial load.
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