Pentair's ENVIROSEP® Varnish Control System solves the problem of varnish formation in lubrication and hydraulic systems. The technology was developed for turbines in the power industry to improve upon traditional varnish mitigation methods. This system prevents the sticking and seizing of valves and the fouling of heat exchangers, improving performance and reducing the costly risks of unplanned downtime.
The ENVIROSEP Varnish Control System uses advanced adsorption and filtration technology to stop varnish formation and sustain high oil circulation rates. It removes the partially soluble gels, soft contaminants, and insoluble fine particles that can lead to varnish formation. Especially with the temperature extremes found in power generation turbines, they easily build up into a film that is very hard to remove and will reduce reliability and productivity.
Pentair's varnish control system uses radial flow technology to quickly treat the entire reservoir and sustain high circulation rates. The system helps to restore the lubrication oil package, enabling long-term improvement in both oil quality and equipment reliability.
In the power industry, high-efficiency turbines operate at high temperatures to increase output. Under extreme operating conditions, including the low temperatures during planned shutdowns, lubrication systems become vulnerable to varnish formation, exposing plant owners and operators to potentially costly risks. Varnish formation is the result of oxidation and thermal degradation of the lubricant oil and its protective additives.