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S U D E

Hot Blast Valve

Hot Blast Valve – Series 1920

High-Temperature Isolation and Control Valve for Blast Furnace Systems

The Hot Blast Valve – Series 1920 from SUDE Engineering Private Limited is a precision-engineered industrial valve designed for controlling and isolating hot compressed air in blast furnace systems, withstanding temperatures up to 1300°C. It serves as a critical component linking stoves to blast furnace tuyeres, regulating the alternating flow of hot air during heating and blowing cycles, and ensuring consistent furnace performance.

Engineered to endure extreme thermal stress, cyclic operation, and abrasive conditions, the valve provides reliable, long-term performance in demanding steel plant environments. Its robust construction and precision-engineered sealing surfaces ensure leak-free operation, protecting downstream equipment and enhancing operational efficiency.

The hot blast valve is constructed from high-temperature resistant materials capable of withstanding repeated thermal cycling and mechanical stresses. Its design minimizes wear and tear, reduces maintenance requirements, and delivers consistent performance under harsh industrial conditions. The valve’s reliable isolation capability ensures safe furnace operation and contributes to energy efficiency and process optimization.

Compatible with manual, pneumatic, or electric actuation, the valve integrates seamlessly into automated control systems, providing operators with precise control over the hot air flow and enabling safe, efficient furnace operation. Widely applied in steel plants, ironmaking facilities, and other high-temperature industrial processes, this valve reflects SUDE Engineering Private Limited’s commitment to durable engineering, operational safety, and high-performance industrial solutions.

Technical Specifications

Parameter
Specification
Shapes Available
Circular (typically in line with hot blast mains)
Size Range
DN 400 to DN 2000 or larger
Flow Media
Hot compressed air (800°C to 1300°C)
Blade Type
Rotary disc, butterfly, or double flap type
Sealing Efficiency
Tight shut-off with refractory or air-seal design
Sealing Type
Metal-to-metal, refractory, or seal air system
Temperature Range
Up to 1300°C with refractory lining
Material of Construction
High-temperature alloy steel with internal refractory lining
Pressure Rating
Up to 3 bar or as per process design
Drive Operations
Pneumatic or hydraulic actuator; optional counterweight assist
Testing Standards
Thermal performance, leakage, and operational cycle testing
Design Standards
Custom engineered to blast furnace specifications and process data

Working Principle:

Hot Air Delivery Mode
The valve opens to allow hot compressed air from the stove to flow into the blast furnace tuyere system.
Isolation Mode
During stove switching or reheating, the valve closes to isolate the hot blast line and maintain system pressure integrity.
Sealing System
Refractory or metal sealing surfaces ensure reliable tightness at extreme temperatures.
Operation Control
The valve is operated through pneumatic or hydraulic systems synchronized with the blast furnace control sequence.

Key Features & Advantages

  • Engineered to withstand extreme thermal stress and pressure cycles
  • High durability sealing design – metal or refractory seats for zero soft-seal degradation
  • Optimized actuation for fast, reliable operation in automation sequences
  • Low maintenance design suited for continuous blast furnace duty
  • Custom-built for furnace layout and performance requirements

Why Choose Hot Blast Valve – Series 1920?

  • Proven performance in blast furnace and steel plant applications
  • Designed for long operational life under extreme conditions
  • Backed by Sude Engineering’s metallurgical expertise and field support
  • Precision-built for safety, reliability, and thermal stability

SUDE Hot Blast Valve Advantage:

It delivers proven performance in blast furnace and steel plant applications, designed to withstand extreme conditions with long operational life.
Backed by Sude Engineering’s metallurgical expertise and field support, it is precision-built to ensure safety, reliability, and excellent thermal stability.

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