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Valve Gating
Valve gating is about more than just producing a quality gate mark, it delivers precision performance and accurate melt flow control in the fill, pack and cooling phases of your plastic part. Valve gating is also an essential tool for automated production because it enables faster mold start up, a more stable injection process and eliminates stringing and drooling of the melt.
Rheo-Pro® valve gate hot runner systems offer the ideal solution for injection molded plastic parts that require superior gate and surface quality and short cycle times. Whether you produce small, high-cavity medical parts or large components for the automotive industry, valve gating can dramatically improve the performance and efficiency of your molding project. Our systems are engineered for precision and reliability.
Rheo-Pro® N08 VG nozzles with front-replaceable heater sleeves removed
Top actuated air supply offers clean, precision valve gate timing and is easily accessible and serviceable with basic tools
Precision Performance
It is critical that valve gated hot runners are built using only extremely wear resistant materials that can perform under the harsh operating conditions in which they operate. Heat, pressure and corrosion will quickly deteriorate components that does not adhere to strict tolerances. Every Rheo-Pro® hot runner system is backed by a comprehensive warranty.
Rheo-Pro® adjustable, pre-guided valve pins can be lengthened or shortened directly on the cylinder using only a conventional screwdriver
CV Series Sequence Controllers
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Rheo-Pro® CV Series Valve Gate controllers offer accurate, user friendly control of your hot runner system
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No drooling or stringing of the gate |
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Improved processing window |
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Shorter cycle times, increased productivity |
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Better plastic part surface and gate quality |
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Accurate control of injection timing and melt distribution |
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Optimized cavity venting and weld line positioning |
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Faster mold start-up |
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Improved automated molding cells |
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Ideal for thin-wall parts, foam and gas assist injection |
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Air Actuated
Valve gates can be actuated with pneumatic air presuure, hydraulic oil pressure or electric components. The most reliable and practical valve gate actuation is air operated because it is a clean, low cost and universally available medium. Air offers an easy to connect and accurate control circuit with maximum flexibility for opening and closing an unlimited number of valve gate nozzles. Rheo-Pro® valve gate actuators are maintenance free and perform under the most demanding operating conditions.
Rheo-Pro® valve gate system (exploded view)
Valve gate systems improve part quality by delivering crisp, clean gate marks. Shown here are Rheo-Pro® N04 valve gate nozzles.
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  Internal Valve Gate
The Rheo-Pro® iVG™ is an internally air actuated valve gate system with no external cyclinder, no seals and no lubricant. It represents the latest and most innovative valve gate technology in the industry and is ideal for ultra compact stack mold solutions.
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Multi-Tip Valve Gate
The Rheo-Pro® M05VG is a valve gate version of the standard M05 multi-tip nozzle. It can direct valve gate micro parts with a weight of less than 5 mg. It delivers crisp, clean gate marks of 0.7 mm - 1.0 mm diameter with zero gate vestige.
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