Dab Pumps VA-VB-VD

Wet rotor electronic circulators

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Dab Pumps

Mestrino, Italy
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Wet rotor electronic circulators

Pump for hot water circulation in domestic central heating and air conditioning systems of the closed circuit pressurized type or open circuit type.

Operating range: from 0.5 to 3,6 m3/h with head up to 6 metres.
Pumped liquid temperature range: from -10°C to +110°C.
Pumped liquid: clean, free from solids and mineral oils, non viscous, chemically neutral, close to the characteristics of water (max 30% glycol).
Maximum operating pressure: 10 bar (1000 kPa).
Minimum suction pressure: the values are given in the relative tables.
Installation: with HORIZONTAL MOTOR SHAFT on discharge or return pipe, with suction port as close as possible to expansion vessel, above maximum boiler level and as far as possible from bends, elbows, and circuit branches to avoid water turbulence with consequent noise.
Protection level: corresponding to IP 44
Insulation class: F
Cable grommet: PG 11
Special executions on requests: alternative voltages and/or frequencies.
Optional accessories: r3/4”F - 1”F - 11/4”F - 11/4”M unions
DN20-DN25-DN32 oval counter-flanges
DN32/PN6 round counter-flanges.

Enbloc body composed of hydraulic section in cast iron and wet rotor motor. Motor casing in die cast aluminium. Impeller in technopolymer. Motor shaft in hardened stainless steel held in graphite bearings lubricated by the pumping medium. Rotor protective jacket, stator jacket, and closing flange in stainless steel.
Ceramic thrust ring, ethylene-propylene seal rings and brass air breather plug. The two-pole asynchronous wet-rotor motor is resistance protected and does not require any form of overload protection.

Further info from manufacturer on VA-VB-VD

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