Control valve solutions
Industries today are facing new challenges in order to meet the requirements with respect to environment, health and safety and the production efficiency. Plant run-time targets are increasing which also sets new challenges for control valve availability, performance and reliability. With the Neles top-class control valves process variability can be reduced to avoid production losses, upsets and also reduce the consumption of fuel or raw materials.
Metal seated rotary control valves together with intelligent control valve controllers are the answer to all these challenges
Safety – Metso rotary stem operation reduces fugitive emissions and protects the valve from the gland packing leaking. Packing construction meets the latest emission standards. Neles control valves fire tested and approved to meet the standards.
Efficiency - Throughput losses due to sticking and poor control performance will be avoided with high performance rotary control valves. Flow through the process unit may be changed as the need arises with rangeability of 150:1 and even further with full bore ball valves. All valves may be equipped with Metso’s advanced
Neles ND9000 digital valve controller that ensures higher positioning accuracy and faster response to reduce process variability. Correct control valve selection and sizing with Metso
Nelprof-program assures the best valve performance and process control.
Reliability – Simple rotary designs offer non-clogging flowports and rugged hard-faced trims. Costly service work involving the removal off the valve from the line and replacement parts is eliminated. Same face-to-face dimensions as globe valves, upgrading linear valve technology to rotary designs eliminates the need for changes to pipework configurations. Rotary valves have been in service for several years without requiring maintenance and show no sign of gland packing leakages often related to traditional rising stem globe valves.
Availability – Trend data collected by Metso smart valve controllers and analyzed by
Metso FieldCare configuration and condition monitoring software based on open FDT technology makes it possible to predict and respond to maintenance requirements and avoid unscheduled downtime. This gives full transparency to the valve performance in process control.
