Subject to Lead Time - Contact for more information
TopWorx Limit Switch Box TVA-M2WYNCM Valve Monitor
TopWorx Limit Switch Box TVA-M2WYNCM Valve Monitor
Couldn't load pickup availability
The TopWorx TVA-M2WYNCM is part of the TVA series of modular valve position monitors, designed for general-industrial, safe-area use. This model features a composite resin housing and offers both visual indication of valve position and mechanical switch feedback.
Key Features
-
Composite-resin enclosure: value-driven, lightweight and corrosion-resistant.
-
Two mechanical SPDT switches (M2) for open/close status feedback.
-
90° visual indicator with Yellow = OPEN for immediate on-site recognition.
-
NAMUR stainless-steel shaft interface for direct mounting to compatible actuator drives.
-
Dual M20 resin conduit entries giving wiring flexibility.
-
Silicone O-ring sealing for ingress protection in ambient industrial environments.
-
Safe-area rating (no ATEX/IECEx explosion-proof approvals) simplifies installation in non-hazardous zones.
-
Modular TVA series design allows selection of different switch/sensor types, displays and wiring options.
Applications
-
Mounted on quarter-turn actuated valves (ball, butterfly, plug) in process plants, providing both visual and electronic feedback of valve position.
-
Ideal for general-industrial environments (water/treatment, HVAC, utilities, chemical) where a simple, compact position monitor is needed and hazardous-area certification isn’t mandatory.
-
Suitable for retrofit or OEM installations needing a compact, cost-effective valve monitor with reliable feedback.
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.