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Sievmaster BOSC

The Balloon Oversize Conversion (BOSC) for the Slimline product range is designed as an easy to integrate solution that can be installed within the footprint of the original Slimline machine.

What is the BOSC?

It uses a specially shaped silicone balloon which expands to create a seal between the Oversize Outlet and mesh screen. The BOSC is easy to use, low maintenance, and is designed with special consideration for the food, pharmaceutical, and other hygiene-conscious industries. The BOSC works most effectively in process lines that sieve product continuously.

The option can substantially increase the throughput of a machine by utilising the full mesh area without fine product being undesirably rejected from the oversize outlet. The BOSC option excels in installations with limited space, providing higher efficiency where larger machines are not an option.

Watch our product video

How it works.

The balloon is filled via a food safe flexible pneumatic hose up to +200mbarg, creating a seal between the outlet and mesh screen, stopping the flow of product from the sieve’s Oversize Outlet.

The result is far more effective control over the amount of good product leaving the machine.

Features & Benefits

  • BOSC controls the amount of ‘good product’ being ejected from the sieve’s Oversize Outlet
  • Suitable for both dry and liquid applications. Holds up-to 130mm head of water +200mbarg
  • Clear vision port: for ease of inspection without the need for disassembly
  • Easy to clean, can be removed without tools from outside the sieve’s gallery
  • Available in white or blue metal detectable silicone Food Grade certified to EC 1935/2004
  • Automatic Control Option available

Return on investment

On a typical Slimline application sieving efficiency increased from 99.7% to 100%*

*Depending on application. We used a real-world production environment testing with an industrial partner, sieving common food products such as milk powder, flour, sugar, Maltodextrin, and coffee.

Return on Investment Table

This equates to making your investment back within just 15 days!

(Figures are based on an upgrade from a manual oversize option processing £1/kg product at 1000kg/h – no control system included – new machines only).

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Looking for more information?

Read more about the Sievmaster BOSC, the outlet control option for the Sievmaster Slimline Range, in our downloadable PDF.