Why So Quiet?

New Fluid Technology Pty Ltd have invented a new principal of operation for pumps. The principle "Solid Body Vorticity" (SBV) can be applied to all pumps. Thus SBV is similar for example to the "Otto cycle" principle being applied to all internal combustion engines regardless of their size. We (NFT) design and build only prototypes for various applications for customers in the pump industry. For this we recieve an agreed royalty for every pump manufactured. Supa-Stelth are the most simple pumps possible. We have done away with the diffusers, volutes and even the "cutwaters" that are an integral component of all other centrifugal pumps and essential for their pressure and efficiency. The problem is these diffusers are the source of almost all of the noise and so eliminating these parts is the main reason our sound levels are so low in comparison.

So that we do not lose the efficiency those diffusers impart to conventional pumps we minimise the main cause of pump efficiency losses which is the water's momentum changes through the pump, sometimes called acceleration head. Please refer to the "PUMP HANDBOOK" ISBN is 978-0-07-146044-6. This is achieved 1; by our unique pump body and 2; our unique impeller.

We Began with an Improved Impeller design

Comparing our impeller and a conventional pump impeller you will notice a big difference.

Our patented impeller manufacturing method enables a quality, scientifically designed impeller which allows the water to accelerate through the inlet to undergo smooth direction and momentum change before leaving the periphery. Conversely, with a conventional impeller, water gets drawn in and abruptly turns 90 degrees and then exits the periphery after uneven acceleration, thus reducing its efficiency. Also in conventional pumps that have to employ diffusers to get their efficiency the water hits the diffuser inlets at around 18+metres / second generating major noise.