The Emhart Glass 340 Forehearth system has evolved through intensive mathematical modelling and many years of experience at the cutting edge of forehearth technology. The system combines unparalleled cooling capacity with thermal conditioning, and it is capable of operating over an extended tonnage and gob temperature range. This new design employs a unique simultaneous dual cooling system where a combination of muffled and direct-forced convective cooling is used. This configuration provides the forehearth with an unprecedented degree of controlled cooling power. In addition, the advanced flue control mechanism provides for centre heating capabilities, which extends the lower range of the 340 Forehearth - a feature that is extremely helpful for low pull, high gob temperature jobs and improving job change times. The 340 Forehearth utilises the proven 540 cooling section roof block design to efficiently divide each cooling zone into three separate longitudinal areas. The central area is used to house the muffles cooling plates, and to contain the internal cooling airflow. The two outer areas are used to contain the combustion gases while operating in cooling mode. Each cooling zone is equipped with five automatically controlled flue exhausts. These exhausts, in conjunction with the cooling air and combustion gas control valve, can be adjusted to direct the flow of cooling air and combustion gasses, both longitudinally and laterally, within the forehearth chamber. This control allows the mechanism to selectively input or remove heat from the glass, and it ensures tight control of the thermal conditioning process. Whether applied to distributors or forehearths, the 340's design concept provides unparalleled thermal conditioning. It represents the future of forehearth technology made available today by Emhart Glass.
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