StoneL QX35B02NDM-SCH12 Control Valve Quartz Neles

StoneL QX35B02NDM-SCH12 is a Quartz-series control valve monitor designed to pair with Neles valves, delivering valve-position communication and on/off control in a compact, explosion‑proof module for hazardous environments. As part of the Quartz QX/QN family, it supports universal voltage switching and solenoid termination, enabling flexible integration with common field power schemes and valve actuators. The unit employs an explosion‑protected enclosure suitable for hazardous locations such as Class I, Division 1 and 2, and is intended for use on pneumatic valve assemblies in process industries where durable, reliable valve status signaling is required. The QX35B02NDM-SCH12 designation identifies a specific Quartz configuration configured for Neles installations, reflecting its intended fit within the Stonel/Valmet valve‑communication ecosystem. Distributor catalogs indicate this exact model has been discontinued by the manufacturer, which may affect official availability and support, so verify current stock and compatibility with any legacy systems through reputable suppliers. Typical applications include hazardous‑area process control where robust monitoring and control of valve position are essential, such as oil and gas, chemical processing, and refining environments, with the Quartz family known for corrosion resistance and options for visual indication of valve status.