Butterfly Valve with Limit Switch – Specs, Dealers & Wiring Guide India
Butterfly Valve with Limit Switch – Specs, Dealers & Wiring Guide India
Butterfly valves with limit switches are designed for automated or remote-controlled flow systems. The integrated limit switch signals the valve’s open or closed position to a controller or SCADA system. These are widely used in water treatment, HVAC, fire safety, and process plants that require valve status monitoring or interlocks for safety.
What is a Limit Switch in a Butterfly Valve?
A limit switch is an electromechanical device mounted on the valve actuator or gearbox. It detects the mechanical position of the valve disc (open or closed) and sends electrical signals to a control panel or PLC.
Benefits of Using Limit Switches
- Remote position indication (open/close)
- Prevents over-travel or valve jamming
- Enables feedback to control systems (DCS/PLC)
- Essential for motorised and actuated valves
- Can trigger alarms, interlocks or safety shutdowns
Common Configurations
- Manual Lever Operated + Limit Switch – With external position indicator
- Gear Operated + Limit Switch Box – For higher torque manual use
- Motorised Butterfly Valve + Limit Switch – For full automation
- Pneumatic Actuated Valve + Proximity Limit Switch
Applications of Butterfly Valves with Limit Switches
| Industry | Usage |
|---|---|
| Water & Wastewater | Remote valve control and monitoring |
| Fire Protection Systems | Status signal to control panel for UL/FM valves |
| HVAC & Building Automation | Actuated valves with feedback |
| Oil & Gas | Critical shutoff monitoring |
| Chemical Industry | Automated dosing and flow interlocks |
Wiring Diagram Overview
Limit switches typically use 2 to 4 wires for feedback signals:
- NO (Normally Open) – Closes when valve reaches end position
- NC (Normally Closed) – Opens when valve actuates
- Common Wire – Shared neutral or power loop
Always refer to the wiring manual or circuit diagram provided by the valve or switch box manufacturer.
Top Butterfly Valve with Limit Switch Suppliers in India
- Udhhyog – Lever/gear/motorised butterfly valves with switch kits and IP67 boxes. Send Enquiry
- Zoloto Valves – UL/FM butterfly valves with limit switch accessories
- L&T Valves – Actuated valve systems for building and water works
- Hyper Valves – Automation-ready butterfly valves for OEMs
- Kartar Valves – Compact switch box integration options
Price List – Butterfly Valves with Limit Switch (2025)
| Size | Operation Type | Material | Price Range (INR) |
|---|---|---|---|
| 50 mm | Lever + Switch | CI / EPDM | ₹1,200 – ₹1,900 |
| 100 mm | Gear + Switch | CI / Nitrile | ₹2,800 – ₹4,200 |
| 150 mm | Motorised + Limit Switch | SS / PTFE | ₹12,000 – ₹18,000 |
| 200 mm | Gear + Limit Box | DI / EPDM | ₹4,800 – ₹7,000 |
Certifications
- UL/FM (for fire valves)
- IP67/IP68 rated switch enclosures
- ISI/BIS approved valve bodies
- CE / ROHS compliance for switch terminals
- MTC, Hydrotest Reports for each unit
Checklist Before Buying
- Confirm valve size, MOC and pressure rating
- Choose switch type: mechanical or proximity
- Ensure compatibility with automation system
- Request wiring diagram and terminal layout
- Verify IP rating and certification as per site condition
Why Choose Udhhyog?
Udhhyog supplies ready-to-install butterfly valves with limit switches, gearboxes, and actuator kits. Trusted by OEMs, contractors, and fire system integrators across India.
Website: https://udhhyog.com | ? 9311120784
FAQs – Butterfly Valve with Limit Switch
Q1. Can I retrofit a limit switch on a manual butterfly valve?
Yes, many manufacturers offer limit switch kits that fit on lever or gearbox operated valves.
Q2. Is the switch box waterproof?
Look for IP67 or IP68 rated switch enclosures to ensure waterproofing.
Q3. What is the voltage rating for limit switches?
Usually 24V DC, 110V or 230V AC depending on the system. Confirm before wiring.
Q4. Can I use it with SCADA?
Yes, the switch sends digital feedback that can be read by SCADA, DCS or PLC systems.
Q5. What is the typical wiring scheme?
Most systems use NO and NC contacts with a common wire, often pre-wired into a terminal block.
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