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Topworx

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Product Categories

  • Sensor
  • Switch
  • Valve

Topworx

TopWorx is a renowned American manufacturer of valve position indicators, limit switches, and LVDT sensors for the control and monitoring of process valves in the oil and gas industry, petrochemicals, and process industry. The company, a division of Emerson, supplies reliable position monitoring components for pneumatically and electrically operated valves.

The TopWorx product range includes mechanical and electronic position transmitters, NAMUR sensors, explosion-proof switches, intrinsically safe switches, 4-20mA LVDT position transducers, HART-communicating position transmitters, and complete valve topworks. Products are certified for use in ATEX and NEC Division 1/2 zones and available in stainless steel and fiberglass-reinforced plastic housings.

Verkopershulp.nl supplies TopWorx position indicators and sensors for maintenance and replacement in process installations. Our instrumentation specialists advise on the correct indicator for your valve type, process environment, and electrical classification.

History

TopWorx was founded in the United States as a manufacturer of specialized position indicators for industrial valves. Following acquisition by Emerson Automation Solutions, TopWorx was integrated into Emerson's broad portfolio of measurement and control equipment for the process industry. TopWorx supplies customers worldwide in oil and gas and chemical process installations.

Product Categories

  • Mechanical position transmitters DX series
  • Electronic position transducers GO series
  • LVDT position transmitters 4-20mA
  • NAMUR switch blocks
  • Explosion-proof position switches ATEX
  • Intrinsically safe switches
  • HART-communicating position transmitters
  • Complete valve topworks
  • Spring-return actuator position transmitters
  • Position indicator sets for quarter-turn valves

Applications

  • Process valves oil and gas production
  • Pipeline valves and ball valves
  • Butterfly valves process industry
  • ATEX zones offshore platforms
  • Refinery installation management
  • Chemical process valve monitoring
  • Steam installation valve control
  • LNG installations and terminals
  • Water treatment large valves
  • Pharmaceutical process installations

Frequently Asked Questions

What is the difference between TopWorx DX and GO series position transmitters? ▾
The TopWorx DX series are mechanical switches with reed contacts for simple open/closed signaling. The GO series are electronic transmitters with continuous 4-20mA position feedback for accurate positioning and HART communication. Choose GO for continuous position control and DX for simple end position detection.
Are TopWorx position indicators ATEX-certified? ▾
Yes, most TopWorx series are available in ATEX-certified versions for Zone 1 (Ex d or Ex ia) and Zone 2. Check the product specifications for the exact ATEX category and gas group.
How do I mount a TopWorx position indicator on a quarter-turn valve? ▾
TopWorx indicators are mounted via a universal mounting kit fitting standard ISO 5211 flange patterns. Ensure alignment of the indicator drive coupling with the valve shaft for accurate position reading. Consult the installation manual for the correct fastening torque.
Can I connect a TopWorx position transmitter to a fieldbus? ▾
Yes, TopWorx supplies position transmitters with HART, Foundation Fieldbus, and PROFIBUS interfaces for connection to modern process bus systems. HART models connect directly to existing 4-20mA infrastructure with combined digital communication.
What is the delivery time for TopWorx parts? ▾
Common TopWorx position indicators are typically available within 5-10 working days. ATEX-certified models may have a longer lead time depending on configuration. Contact us for current availability.