Wafer-Type Quick-Acting Fire Butterfly Valve

1 Durable Material Engineering

QT450-10 Ductile Iron Body: Boasts tensile strength ≥450MPa and elongation ≥10%, with impact toughness resisting sudden pressure surges in fire scenarios. The electrostatic red epoxy coating (thickness ≥80μm) ensures smooth finish, uniform color, and no bubbles/wrinkles-achieving salt spray resistance ≥600h for long-term outdoor use.

Nickel-Plated Critical Components: Butterfly disc and valve stem feature 8~10μm nickel plating, enhancing corrosion resistance and reducing friction, ensuring smooth operation even after years of standby.

EPDM-Rubber Composite Seals: Combines EPDM's temperature adaptability (0~80℃) with rubber's elasticity, maintaining zero leakage under 3.2MPa seal test pressure; resistant to foam mixture degradation, with a service life ≥5 years.

HPb59-1 Copper Sleeve: Three precision-machined copper sleeves reduce valve stem wear by 50%, minimizing operating torque and ensuring effortless handle control in emergencies.

2 Innovative Structural Design

Wafer-Type Clamp Installation: Directly clamped between pipeline flanges using M8×25 bolts (per GB/T57150-2000), eliminating flange welding and cutting installation time by 60%.

90° Quick-Acting Handle: Marked with clear "OPEN/CLOSE" indicators; when fully open, the handle aligns parallel to the pipeline axis for instant status recognition. Integrated spring preload ensures tight seating when closed.

Streamlined Butterfly Disc: Optimized hydrodynamics reduce flow resistance coefficient to ≤0.3, ensuring maximum fire water/foam delivery without pressure loss.

Locating Plate Reinforcement: Q235A steel locating plate fixes the valve stem position, preventing deflection during operation and enhancing structural stability.

3 Safety-Centric Features

Fire-Resistant Coating: Red epoxy powder coating complies with fire equipment visual standards, enabling quick identification in emergency scenarios.

Anti-Seize Design: Nickel plating and copper sleeves prevent stem jamming from long-term inactivity, critical for fire protection systems requiring instant response.