The valve series ARCA-ECOTROL is a robust, compact and lightweight control valve with a pneumatically operated, easy field reversible multi-spring diaphragm actuator ARCAPAQ 812 and a sturdy, pipeless and vibration-resistant mounted digital positioner ARCAPRO 827A. The highlight of this valve series is the ARCA-double-life (quick-changeable trim combination) with the option of a double-side use by reversing the seat ring.
The valve seat can be economically produced in different materials like for example, hardened and stellited steel, ceramic, Tungsten carbide, etc., with or without soft sealing. In comparison to conventional designs the speciality of the ECOTROL’s soft sealing is, that the PTFE-element is flexibly supported by an additional Elastomer O-Ring. The additional metal-to-metal sealing of plug and seat ring ensures that the PTFE-disc suitable for doubleside use is not physically deformed by excessive loads.