Signal Butterfly Valves

Limit Switch FeedbackPLC/DCS ReadyFire ProtectionHVAC AutomationDN50–DN2000
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Signal Butterfly Valve — Position Feedback for Automation

Limit Switch Box · PLC/DCS Feedback · Fire Protection · HVAC

Reguvale’s signal butterfly valve is a butterfly valve fitted with a limit switch box that provides open/close position feedback to a PLC, DCS or building management system. The mechanical or proximity switches give dry contact signals for remote valve status monitoring.

Widely used in fire protection systems (fire sprinkler and suppression), HVAC automation, water treatment and any application where operators need to know remotely whether a valve is open or closed. Available with manual, pneumatic or electric actuation.

Body materials: ductile iron GGG50, carbon steel WCB, stainless steel CF8/CF8M. Limit switch box: mechanical or inductive proximity, IP67 rated, ISO 5211 mounting. DN50–DN2000, flanged or wafer ends.

DN50–DN2000 Limit Switch Box Mechanical / Proximity IP67 PLC/DCS Ready

Key Features

✓ Open/Close Position Feedback

Limit switches give dry contact signals showing valve open/closed status.

✓ PLC/DCS Compatible

Signals wire directly to PLC, DCS or building management system inputs.

✓ Mechanical or Proximity Switches

Choose mechanical limit switches or inductive proximity sensors per application.

✓ IP67 Rated

Weatherproof switch box for indoor and outdoor installation.

✓ Flexible Actuation

Manual lever, pneumatic or electric actuated versions available.

✓ Fire Protection Ready

Ideal for fire sprinkler and suppression systems needing status monitoring.

Technical Specifications

ParameterSpecification
DesignConcentric / Double Offset, with Limit Switch Box
Body MaterialDuctile Iron GGG50 / Carbon Steel WCB / Stainless Steel CF8 (304) / CF8M (316)
Seat MaterialEPDM / NBR / PTFE
Limit SwitchMechanical or Inductive Proximity, IP67, ISO 5211 Mounting
Size RangeDN50 – DN2000 (2" – 80")
Pressure RatingPN10 / PN16 (higher on request)
Temperature-20°C to +120°C (EPDM)
End ConnectionFlanged / Wafer / Lug
OperationManual / Pneumatic / Electric
CertificationISO 9001:2015, SGS Material Test (MTC per batch)

Applications

⚑ Fire Protection

Fire sprinkler and suppression systems with remote valve status monitoring.

⚑ HVAC Automation

Building management systems needing valve position feedback.

⚑ Water Treatment

Remote monitoring of isolation valves in treatment plants.

⚑ Industrial Automation

Any process where operators need remote valve open/close confirmation.

Frequently Asked Questions

What is a signal butterfly valve?

A signal butterfly valve has a limit switch box fitted to the valve or actuator that provides open/close position feedback to a PLC, DCS or building management system.

Where are signal butterfly valves used?

Signal butterfly valves are widely used in fire protection systems, HVAC automation, water treatment and any application where remote valve position monitoring is required.

What type of feedback does the limit switch provide?

Mechanical or proximity limit switches provide dry contact open/close signals, which can be wired to PLC/DCS inputs for remote monitoring and status indication.

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