Limit Switch

Corrosion
Resistant
Leak Tight
Sealing
Automated
Operation
Low Maintenance
Long Life

Limit Switch Box is a valve position monitoring device used with pneumatic and electric actuated valves to provide accurate Open and Close position feedback. It features visual position indication, dry contact switches, and weatherproof or explosion-proof enclosures, making it ideal for automated valve control systems in industrial applications.

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Limit Switch

Specifications

Function

Valve Position Feedback

Position Indication

Open & Close

Voltage

24 VDC / 110 VAC / 220 VAC (Depending on Switch)

Explosion Proof

Ex d IIB T4 / Ex d IIC T6 (Optional)

Visual Indicator

Open/Close Dome

Ambient Temperature

-20°C to +80°C

Compatibility

Pneumatic & Electric Actuators

Switch Type

Mechanical SPDT / Dry Contact / Proximity Sensor

Contact Rating

250 VAC, 5A (Standard) / As Required

Enclosure

Weatherproof IP67/IP68 / Explosion Proof

Cable Entry

1/2" NPT(F) / M20 × 1.5

Mounting Standard

NAMUR / VDI/VDE 3845

Housing Material

Die Cast Aluminium / SS304 / Engineering Plastic

Product Images

Limit Switch

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Frequently Ask Questions

A Limit Switch Box provides electrical feedback of a valve's fully open and fully closed positions, enabling remote monitoring and control in automated systems.
Yes. Explosion-proof models are available with certifications such as Ex d IIB T4 and Ex d IIC T6, making them suitable for hazardous industrial environments.
The rotating actuator shaft moves adjustable cams inside the box, which activate the internal switches when the valve reaches the open or closed position. These signals are sent to PLC, DCS, or SCADA systems.
It can be installed on ball valves, butterfly valves, plug valves, diaphragm valves, and other quarter-turn actuated valves using standard NAMUR mounting.