Fusible Plug – One-Piece Design

We supply high-quality Fusible Plugs for Industrial Boilers , designed to ensure maximum safety and reliable performance. These plugs are manufactured using premium-grade materials and are suitable for all types of steam boilers, including IBR and non-IBR applications. High-Temperature Resistant Alloy Construction Ensures reliable melting at critical temperatures to protect boiler tubes and pressure parts. Accurate Melting Point Provides timely safety response in case of low-water conditions. Durable & Corrosion-Resistant Body Long service life even in continuous steam exposure. Precision Threading Easy installation on boiler shell and fire tube sections. Available in Various Sizes & Types Suitable for vertical and horizontal boilers. All types of solid, oil & gas fired boilers Body Material: Gun Metal / Brass / Bronze Melting Metal: Tin / Lead Alloy as per IBR Standards Type: Standard, IBR Approved, Fire Tube Type, Shell Type Trusted supplier for IBR-approved boiler accessories A Two-Piece Design Fusible Plug is a critical safety device used in steam boilers to prevent accidents caused by overheating of the boiler shell or crown plate due to low water levels. It consists of a gunmetal or brass body with a fusible alloy (generally tin, lead, or bismuth-based) inserted into the core. This alloy is designed to melt at a predetermined temperature (usually between 425°C – 450°C ) when water level falls below the safe limit, thereby allowing steam or water to escape and warning operators of unsafe conditions. The two-piece construction ensures better ease of maintenance and replacement of the fusible metal without changing the complete body. It provides reliable performance, durability, and long service life under continuous boiler operations. Operating Principle: Fusible alloy melts when the boiler crown plate is exposed to direct flame due to insufficient water level. This creates an opening, releasing steam and water into the furnace. Immediate audible and visible warning is given, ensuring boiler shutdown to prevent explosion. Fusible alloy melts when the boiler crown plate is exposed to direct flame due to insufficient water level. This creates an opening, releasing steam and water into the furnace. Immediate audible and visible warning is given, ensuring boiler shutdown to prevent explosion.