Ductile Iron Signal Wafer Butterfly Valve, Gear Operated Fire Protection Signal Butterfly Valve with Limit Switch

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Main Features

1. Ductile iron valve body & disc, red epoxy coating for fire‑fighting pipeline anti‑corrosion

2. Wafer lug‑less clamping connection, compact structure, easy installation between two pipe flanges

3. Gear‑wheel handwheel operation, labor‑saving opening & closing

4. Built‑in electric signal limit switch, outputs open‑close electric feedback signal to fire control cabinet

5. EPDM rubber seat, zero‑leakage bi‑direction sealing performance

6. Specialized for fire sprinkler pipeline isolation cut‑off control

Product Advantages

1. Light‑weight wafer structure, saves installation space, easy for maintenance

2. Independent signal switch module, real‑time feedback valve open/close status for fire monitoring system

3. EPDM soft seat, reliable bidirectional tight shut‑off, low flow resistance

4. Gear‑wheel transmission, stable torque, easy manual operation for large size

5. Red fire‑grade epoxy coating, anti‑rust for indoor fire service environment

6. Widely used for fire sprinkler pipe section isolation in commercial buildings

Application Scenarios

‑ Fire sprinkler system pipeline isolation and cut‑off control ‑ Shopping mall, hotel, office building, hospital fire protection piping ‑ Factory plant, warehouse fire‑fighting pipe network ‑ Public building fire water supply pipeline projects

Precision Valve Manufacturing

Professional Valve Manufacturer | Integrated Manufacturing

Raw Material Inspection

We select high-quality raw materials according to product specifications and international standards. All incoming materials are carefully inspected to ensure chemical composition, mechanical properties and traceability.

Forging & Casting

Advanced forging and casting processes are used to produce strong and reliable fire hydrant valve bodies and components. Strict process control ensures uniform structure, dimensional accuracy and excellent mechanical performance.

CNC Machining

Our CNC machining equipment provides precise and consistent processing of fire hydrant valve components. Critical dimensions, threads and sealing surfaces are strictly controlled to ensure accurate assembly and reliable sealing performance.

Surface Treatment

fire hydrant valve surfaces are professionally shot blasted to remove rust, scale and impurities. by epoxy powder coating, red fire‑retardant painting or hot‑dip galvanizing for long‑term anti‑corrosion performance.

Pressure Testing

Every fire hydrant valve undergoes strict pressure testing before shipment. Body and seat tests are performed according to applicable standards and customer specifications to verify pressure resistance and sealing reliability.

Quality Inspection

Our quality control team conducts comprehensive inspections throughout the production process. Finished valves are checked for dimensions, appearance, materials, pressure performance and overall quality before final approval and shipment.