The new TUNZE® Hydrofoamer Silence are further developments of the previous model 9400.040 and the core unit of all Master DOC Skimmers. They are based on the needle wheel technology and use pumps with new design and new drive unit.
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Motor block encapsulated in PU casting resin with protective thermostat and new design.
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The special pump housing ensures a high volume of air and an intensive mixing of water and air bubbles.
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Pump cover with integrated air intake nozzle.
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Newly developed needle wheel with high-performance magnet in one part.
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Polished ceramic shaft and one-part ceramic bearing.
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Performance tables – Hydrofoamer 9420.040
These performance tables include a tolerance of +/- 15 per cent.
Depending on the skimmer reactor, the performance may vary due to the counter pressure of the water column.
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Hydrofoamer Silence 9420.040
This pump specifically developed for protein skimmers can be fitted to the Master DOC Skimmer 9420 or 9460 in addition which increases the skimming capacity of each Hydrofoamer to suit a tank volume of about 2,000 litres (528 USgal.). TUNZE® Hydrofoamer 9420.04 can also be used as a standard needle wheel pump on every conventional skimmer of this size on the market.
Technical data:
Mains connection: 230 V/50 Hz
Cable: 1,5 m
Maximum air capacity: 850 l/h at water flow rate of 1,300 l/h.
Energy consumption: 16 W at an air capacity of 850 l/h
Motor winding with protective thermostat.
Pump outlet with ¾ in. BSP thread (NPT).
Pump housing with strainer and silencer.
Pump drive: Rotor with high-performance one-part magnet, with all-ceramic bearing.
Equipped with air regulation and silencer.
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