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- Controller-2 Evo VDI 2440
The Valve Packing Controller 2 Evolution is approved Low Emissions TA LUFT VDI 2440. The formed rings in square shape are made with a particular layering technique with the flexible expanded graphite Sigraflex® E (are available also the styles Z, APX e APX2). The wiper rings are made with the valve packing GR80SGR for which the yarns, impregnated with retardant of oxidation and solid lubricant, are specially wired with Inconel®. Controller 2 Evolution is tipically installed invalves middle and hih pressure services where the requirement low emission has to be acheived together with the low aging and high recovery.