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TopWorx Limit Switch Box TXS-D21GLMM Valve Monitor

TopWorx Limit Switch Box TXS-D21GLMM Valve Monitor

Regular price £1,013.00 GBP
Regular price Sale price £1,013.00 GBP
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The TXS-D21GLMM model is designed for use in hazardous and general-purpose environments, making it suitable for industries like oil & gas, chemical processing, and water treatment. Its compact, direct-mount enclosure helps save space while delivering powerful, reliable performance. This model is certified for global use, ensuring safe operation in diverse and challenging environments.

Key Features:

  • Global Certifications: Certified for use in various hazardous locations, including ATEX, IECEx, and SIL (Safety Integrity Level) ratings.
  • Rugged Construction: The unit is housed in a durable enclosure, protecting it from dust, moisture, and extreme temperatures.
  • Integrated Sensors: Available with multiple sensor options, including GO™ Switches, which provide non-contact, hermetically sealed switching for extended operational life.
  • Visual Indicators: Features clear and easy-to-read visual indicators for open/close valve positions, improving safety and operational efficiency.
  • Flexible Communication: Supports a variety of communication protocols, enabling integration with most plant systems for real-time data monitoring.

Additional Details:

The TXS-D21GLMM can be configured with optional integrated solenoids and 4-20 mA transmitters, making it adaptable for more advanced control systems. Its design allows for fast installation and low maintenance, with a focus on reducing downtime and operational costs in critical applications.

The versatility of this valve monitor ensures compatibility with various valve types and sizes, providing a scalable solution that improves productivity across different industries​.

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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.