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Valve Gate Actuators
No More Cooling Required
Cooling-free Black Box™ and iVG™ hot runners represent a new generation of valve gate systems that does not require maintenance during the life of the mold. These systems eliminate all quality issues related to cooling water such as corrosion and contamination. Less plumbing also simplifies the design and assembly of the mold. New cooling-free technology can benefit all valve gate applications, including high temperature plastics such as PEEK, LCP, PSU, PEI, and PPS, known for their special properties. Processing these materials requires high melt temperatures of up to 450°C in the hot runner and mold temperatures of over 200°C. Black Box™ and iVG™ hot runner systems deliver uninterrupted performance under extreme conditions without cooling or wear. The result is a significant increase in reliability and mold uptime.
  Black Box™ Valve Gate Actuators
The new Rheo-Pro® Black Box™ valve gate cylinder operates without elastomeric seals or lubricants, delivering continuous operation at temperatures of 450°C without cooling or maintenance. The new technology outperforms electric, hydraulic, and conventional pneumatic valve gate hot runners in a wide range of applications.
Rheo-Pro® Black Box™ valve gate actuators require no cooling and operate maintenance-free in temperatures up to 450°C
iVG™ Internal Valve Gate
The Rheo-Pro® iVG™ is an internally air actuated valve gate system with no external cyclinder, no seals, no lubricant, and no cylinder cooling. It represents the latest and most innovative valve gate technology in the industry and is ideal for ultra compact mold designs. The iVG™ performs well under the most demanding processing conditions. Unlike electric valve gates and conventional pneumatic cylinders, that can fail in extremely hot operating environments, the internal valve gate performs at temperatures up to 400°C.
Rheo-Pro® iVG™ internal valve gate nozzles with a piston inside the nozzle body are clean, compact, and cooling-free
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Advantages of Cooling-Free Valve Gating |
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More mold uptime with zero actuator maintenance |
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No seals to maintain or replace, ever |
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No cooling water required, saves energy and maintenance costs |
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Compact dimensions for better mold designs |
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No machine downtime waiting for cylinders to cool to safe temperature when removing molds |
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Available in different configurations for all valve gate hot runner applications |
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Produces more force than conventional actuators |
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Clean operation without oil or lubruicants, ideal for clean room environments |
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Ideal for high processing temperatures |
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Hot runner hot half with two manifolds for multi-material application featuring Black Box™ valve gate actuators
A Better Warranty
All standard Rheo-Pro® hot runner components are developed for maximum reliability, flexibility and performance. MHS manufactures the most rugged and precision engineered systems in the world. Through rigorous testing and billions of cycles in the field, Rheo-Pro® hot runners have one of the best track records in the industry. We fully stand behind every solution we build.
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