Stainless “stealth” pumps

Wilo-Salmson has unveiled a range of “stealthâ€? pumps that are up to 20dB(A) quieter than pumps with traditional fan-ventilated motors. The latest centrifugal multistage pumps are ideal for boosting water in buildings like hotels, libraries, museums, theatres and other public areas. Known as the Wilo-Multivert-MVIS series, the high-pressure centrifugal pumps have no noisy fans to keep their motors cool. Instead, the shaft and bearings are constantly exposed to – and cooled by – the water they are pumping. This type of wet rotor design not only removes the need for a noisy fan but is also an efficient means of cooling the motor. Unlike some other low-noise pumps, the Wilo-Multivert-MVIS series can be mounted vertically. As a result, it’s easy to install MVIS series pumps wherever it is most convenient and efficient.
The pumps are ruggedly constructed with stainless steel impellers, diffusers and pressure casings, and the wet rotor design, with a single shaft for both motor and pump, is effectively “sealed for life.â€?

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