MHS Mold Hotrunner Solutions Inc.

Rheo-Pro® Black Box™ Valve Gate Actuators

The new Black Box™ Valve Gate Actuator is virtually indestructible

Introducing the World’s Most ‘Indestructible’ Valve Gate Actuator

MHS - Mold Hotrunner Solutions presents the Rheo-Pro® VA4010 Black Box™ pneumatic valve actuator. The new valve gate cylinder performs even under the most extreme operating conditions by doing away with elastomeric seals, lubricants, and cooling. The new technology is ideal for both high temperature and clean room applications. The Black Box™ is one of several injection molding innovations that MHS will feature at the upcoming K 2013 in Düsseldorf, Germany (Hall 1 Stand A09).


Built tough for High Processing Temperatures

Increasingly, automotive, medical and electronics manufacturers rely on high temperature plastics such as PEEK, LCP, PSU, PEI, and PPS 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. The VA4010 delivers precision performance in these hot conditions, without cooling or wear.

24/7 Operation with Zero Maintenance

This new technology is characterized by its durability and ease of maintenance. No more production outages to replace seals. This feature makes the Black Box™ cylinder especially attractive for continuous operation in high endurance tools running mass production. Without the VA4010, cylinder maintenance is very complicated in high temperature environments, especially for stack and tandem molds.

Clean Room Ready

The Black Box™ is the first economical alternative to electric valve gates in clean room manufacturing environments (e.g. for medical plastic parts). It is especially well suited for sterile high cavity molds because there is no abrasion of sealing material or contamination from lubricants.


Precision Fill

The instantaneous switching accuracy of the cylinder is in the millisecond range. Synchronicity across all mold cavities ensures that each part fills with absolute consistency. Its speed and reliability make the Rheo-Pro® VA4010 ideal for cascade injection and sequential valve gating.


Superior Surface Quality

The height of the valve pin (or valve stem) can be adjusted accurately using the easily accessible, 1mm fine thread in the piston. This makes fine tuning quicker than with conventional valve gate hot runner systems and contributes to improved surface quality on the gates.


For more info visit