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SKU: TOP-004
TVF T-Series Non Incendive Limit Switch Valve Monitors
TVF T-Series Non Incendive Limit Switch Valve Monitors
Quick Specifications
SKU: TOP-004
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The TVF valve monitoring systems provide the perfect solution for all of your non-incendive applications. Delivering full functionality with a compact and cost effective unit the TVF is available with a variety of sensors including SPDT, ASI, Profibus & DPDT. The clear resin lid offers a highly visible impact resistant cover housing colour coded twist set cams for user friendly adjustment. Green and red LED indicators are also available as a visual addition for low light environments.
Enclosure: Tropicalized Aluminium Base C/W Clear Resin Lid
Bus/Sensors: AS-Interface, SPDT GO Switch, P&F NJ2-V3-N, 4-20mA, DPDT, Gold Plated
Area Classification: Intrinsically Safe, Non Incendive, General Purpose
Regional Certification: InMetro, NEPSI, PESO, EAC
Visual Display: Green/Red, Black/Yellow, 3-Way L Port, 3-Way T Port, 180 T Port
Manual Override: Push Button Momentary/Latching, Dual Push Button
Pilot Valves: 24VDC, 220VAC, 110VAC, Stainless Steel, Aluminium
Key Features
Features and benefits of the TopWorx TVF Valve Position Monitor.
1: Impact resistant highly visible indicator display with option for Red & Green LED for low light environments.
2: Modular by design. Multiple bus and sensor options available to customise from stock. ASI, SPDT, P&F NJ2-V3-N, 4-20mA, DPDT, Gold Plated.
3: Direct Mount capability. Reduced cost, lead times and product profile. Easily direct mount to quarter turn rack and pinion actuators.
Why are they important?
TopWorx TVF switchboxes are important because they provide a reliable and efficient way of monitoring and controlling valve position in demanding industrial environments. These valve controllers combine robust mechanical construction with smart technology, ensuring operators have accurate, real-time feedback on whether a valve is open, closed, or somewhere in between.
This is critical in process industries where safety, compliance, and efficiency are key priorities. The TVF series is designed with durability in mind, offering protection against harsh conditions such as dust, moisture, and corrosive atmospheres. They also reduce downtime by making it easier for technicians to identify valve position quickly, which improves maintenance and operational decision-making. Without switchboxes like the TopWorx TVF, plants would face greater risk of process errors, inefficiencies, and even costly shutdowns, making them a vital component in any automated valve package.
Where would you find them?
You would typically find TopWorx TVF switchboxes in industries where valves play a central role in controlling the flow of liquids, gases, or steam. Common applications include oil and gas facilities, chemical processing plants, power generation, water treatment, and pharmaceutical manufacturing. In these environments, switchboxes are mounted directly onto actuators or valves, acting as the link between the field equipment and the plant’s control system.
This allows operators to monitor valve position from a control room or integrate the feedback into a larger automation system for full process control. Because the TVF is built to withstand extreme industrial conditions and hazardous areas, it is particularly common in locations that require ATEX, IECEx, or other global certifications. Essentially, anywhere precision valve monitoring and safety are required, you will find TopWorx TVF switchboxes in use.



