Proprietary Micro-space Design Helps Reduce Reactive Buildup. A frequent problem in processing products ranging from reactive monomers such as styrene and butadiene to starches and slurries is that they can, and do, build up – and polymerize or ferment – within the “cavities” or open spaces inside the valves controlling the process. Until now the response to this problem has been to fill the cavities with PFA, FEP or another “foreign” material. A more complete solution is KTM’s NoFill valve. As its name implies, the NoFill uses no filling material of any kind. Instead, the cavity has been completely eliminated – except for the micro-space required for ball movement (shown here in red). Depending upon the valve size, that micro-space ranges from 0.5 to 1.0 millimeter. All wetted surfaces are stainless steel, polished to a mirror finish. 

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