Subject to Lead Time - Contact for more information
TopWorx Limit Switch Box TVA-M2WRNAM Valve Monitor
TopWorx Limit Switch Box TVA-M2WRNAM Valve Monitor
Couldn't load pickup availability
The TVA-M2WGNAM from the TopWorx TVA Limit Switch Box series is a compact and cost-effective valve position monitor designed for safe-area applications. It features a composite resin housing, dual mechanical SPDT switches, a 90° visual indicator, and a NAMUR stainless-steel shaft interface—all for reliable valve status feedback in a general-industrial environment.
Key Features
Composite resin enclosure offering corrosion resistance and lightweight installation.
Two mechanical SPDT switches for discrete open/close feedback.
Clear visual indicator for immediate on-site valve status.
NAMUR shaft interface for direct coupling with compatible actuators.
Dual ½″ NPT resin entries for wiring flexibility.
Silicone O-ring seals for improved protection in industrial ambient conditions.
Safe-area rating simplifies specification when full hazardous-area certification isn’t required.
Modular TVA series architecture supports a wide variety of sensor, display and wiring configurations.
Share
Enquire Online!
FAQ's
What is the difference between a valve and an actuator?
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.