The ISG

(Interfacial Surface Generator) Mixer is a continuous process, in-line mixer having no moving parts. It offers mathematically predictable layer generation in a wide variety of liquid-liquid, liquid-solid, and gas-liquid mixing applications. The mixer can quickly be installed in new and existing pipelines at low initial and operating costs. Since it has no moving parts, there is no wear and as a result, no maintenance is required.

Mixing Principle
The ISG Mixer consists of mixing elements enclosed in a pipe housing. Elements can be easily removed from the housing for individual cleaning. The ends of the elements are shaped so that adjacent elements form a tetrahedral chamber. Four holes bored through each element provide the flow paths. If two input streams enter an ISG mixer, the number of layers emerging from the first, second and third elements are 8, 32, 128. This exponential progression generates over two million layers in just 10 elements

The four holes in each ISG element are at oblique angles so that material near the periphery (i.e. near the pipe wall) on the inlet side of the element emerges near the center on the outlet side. This radial mixing eliminates the wall smearing effect often encountered otherwise.

This actual photo illustrates the predictable mixing that occurs after only five elements.

Construction
ISG mixers are available in nominal pipe sizes from 5/8"" to 6"" diameter. Units are constructed of stainless steel, teflon or polypropylene. Other materials and larger sizes can be fabricated to specifications. Threaded ends or flanged connections are available on all sizes

Special R & D Model
Now available is the ISG mixer incorporating polypropylene elements, a PVC housing and threaded NPT ends. This new material option is perfect for applications that are in the R&D stages. The polypropylene / PVC material allows testing of blending products at an affordable cost.

Application
The Ross ISG mixer is ideal for applications where mixing elements must be removed for fast, easy cleaning - such as for sanitary requirements. The mixer is unsurpassed in blending materials with large viscosity ratios, as high as 250,000:1 and more.

ISG Dimensions

Typical ISG Applications

Datasheet