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Topworx Switchboxes

TopWorx Limit Switch Box TXS-T21GNMM Valve Monitor

TopWorx Limit Switch Box TXS-T21GNMM Valve Monitor

£934.00 GBP
£934.00 GBP
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The TopWorx TXS-T21GNMM Valve Monitor is a compact and durable solution engineered for precise valve position monitoring in diverse industrial settings. Encased in a robust 316 stainless steel enclosure, this device offers exceptional resistance to corrosive environments, making it ideal for applications in offshore platforms, chemical processing plants, and other harsh conditions. Its direct-mount design ensures effortless integration with NAMUR standard valve actuators, delivering accurate and real-time feedback on valve status.  

Key Features:

  • Robust 316 Stainless Steel Enclosure: Ensures exceptional durability and resistance to corrosive environments, making it suitable for demanding applications.

  • Direct-Mount Design: Allows for seamless installation on NAMUR standard valve actuators, simplifying setup and maintenance.

  • Global Certifications: Approved for explosion-proof and non-incendive applications, meeting international safety and performance standards.

  • Highly Visible, Low-Profile Position Indicator: Provides clear visual indication of valve positions, facilitating quick and accurate assessments.

  • Versatile Communication Options: Supports multiple bus networks and sensor configurations, ensuring compatibility with diverse control systems.

The TopWorx TXS-T21GNMM Valve Monitor combines rugged construction with advanced features to deliver reliable and efficient valve monitoring solutions across a range of industrial sectors.

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FAQ's

What is the difference between a valve and an actuator?

A valve controls the flow of a fluid (such as water, gas, or steam), while an actuator is the device that operates the valve — automatically opening, closing, or positioning it. Actuators can be electric, pneumatic, or hydraulic, depending on the application and control requirements.

What types of actuators are available?

The main types of actuators are:

Pneumatic actuators – use compressed air for fast, reliable operation.

Electric actuators – use electrical power for precise control.

Hydraulic actuators – use fluid pressure for high-torque applications.

Each type offers unique advantages depending on the environment, media, and system control needs.

How do I choose the right actuator for my valve?

To select the correct actuator, consider:

Valve type and torque requirement

Power source available (air, electric, or hydraulic)

Operating environment (temperature, humidity, hazardous area)

Control signal type (on/off or modulating)

Matching actuator torque and compatibility with the valve’s ISO mounting ensures reliable performance.

What are the main types of valves used in automation?

The most common valves in automated systems include:

Ball valves – for tight shutoff and quick operation.

Butterfly valves – for larger flow control with compact design.

Globe valves – for precise throttling and flow regulation.

Check valves – to prevent backflow.

Gate valves – for full bore flow isolation.

What’s the difference between a double-acting and spring-return actuator?

Double-acting actuators use air (or power) to both open and close the valve.


Spring-return actuators use air to open (or close) the valve, and a built-in spring to automatically return it to a safe position when power or air is lost — ideal for fail-safe operation.

How often should valves and actuators be serviced?

Regular maintenance intervals depend on operating conditions, but a good rule of thumb is to inspect every 6–12 months.

This includes checking for leaks, lubrication, seal wear, and actuator responsiveness to prevent unexpected downtime.