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An alternative to stainless-steel filter regulators, Emerson Asco Series 641, 642, and 643 aluminum filter regulators have flow rate capabilities up to 370.8 standard cu ft/ min (10,500 L/min). Higher flow rates provide more air to the valve actuator, increasing the opening and closing speeds of process valves.
The filter regulators feature a rugged construction and advanced engineering that further enhance safety and maintain plant uptime, while specialized powder coating ensures reliable operation in harsh, corrosive process environments. Effective moisture removal keeps media dry to protect downstream devices, and sophisticated media filtration prevents downstream process contamination. The three-tiered regulator line provides .25- to 1-in. coverage and is highly customizable.
Process manufacturers can choose advanced features, such as Quick Relief, which enhances safety and operational certainty by exhausting downstream pressure if supply air pressure is lost, as well as low-temperature and low-copper variants, manual and automatic draining, global certifications, and many other options.