top of page

Kurimoto Hot Blast Valves 700–1900 mm | Nichiboku Tech 

Welcome to Nichiboku's industrial Blog

Introduction

When it comes to industrial processes involving extreme heat, the integrity and performance of every component are critical. Kurimoto Hot Blast Valves 700–1900 mm are engineered to thrive under such conditions, playing a pivotal role in blast furnace operations and other high-temperature applications. Manufactured by Kurimoto Ltd., a renowned Japanese leader in valve technology, these valves embody the pinnacle of thermal resilience, precision engineering, and operational safety.


Kurimoto hot blast valve on blue background; machinery with pulleys and wheel. Text: HOT BLAST VALVES (700-1900 MM).
Industrial-grade Kurimoto hot blast valve showcasing robust design with water-cooled body and refractory lining, ideal for blast furnace applications.

Built for High-Temperature Reliability:Kurimoto Hot Blast Valves 700–1900 mm

Kurimoto's hot blast valves are meticulously designed to handle continuous exposure to temperatures ranging from 1000 °C to 1400 °C. Their construction features a dual-protection system:

  • Water-Cooled Body and Disc: Integrated water passages actively cool critical components, dissipating intense heat during operation.

  • Internal Refractory Lining: High-alumina refractory materials line the interior, shielding metal structures from direct exposure to hot blast air.

This combination ensures unmatched durability and safety, allowing these valves to operate reliably where standard industrial valves would fail.

Engineering Excellence in Every Detail

Kurimoto's attention to detail extends across every aspect of the valve's design:

  • Sizes from 700 mm to 1900 mm, ideal for large-scale blast furnace and hot stove systems.

  • Pressure Resistance: Capable of withstanding up to 0.5 MPa of hot blast air pressure and 0.55 MPa in the cooling water circuit.

  • Self-Supporting Structure: Designed to endure pressure thrusts without external bracing.

  • Optimized Heat Transfer: Spiral cooling channels in the disc ensure uniform temperature control.

  • Precision Sealing: Stainless alloy hard-faced seating surfaces provide bi-directional leak-tight closure.

Mechanical Performance & Automation Ready

Kurimoto hot blast valves utilize robust mechanical actuation systems:

  • Lever-and-Link Mechanism: Ensures smooth and accurate disc movement.

  • Bronze Bushings with Lubrication Points: Minimizes friction and ensures long service life.

  • Electric Actuator Integration: Heavy-duty motorized units with torque limiters and manual override functions guarantee fail-safe operation.

All actuator and drive components are fully integrated and tested, ensuring dependable field performance under the harshest industrial conditions.

Rigorous Quality Control

Each valve undergoes:

  • Pressure and Operational Cycling Tests

  • Torque and Limit Switch Calibration

  • Cooling Jacket Leak Tests at 1.5x Operating Pressure

These QA steps ensure each product delivers optimal performance from the moment it is installed.

Why Kurimoto Chooses Water-Cooled Design

While some manufacturers explore waterless valve alternatives, Kurimoto continues to invest in the water-cooled, refractory-lined model. Their design innovations overcome traditional drawbacks such as scaling and thermal fatigue through:

  • Precision-Controlled Cooling Water Flow

  • Advanced Alloys and Welding Techniques

  • Internal Coatings for Corrosion and Scale Prevention

This refined approach offers longer operational life and superior heat dissipation.

Backed by Broad R&D Excellence

Kurimoto Ltd. combines over a century of industrial innovation with ongoing advancements in valve technology. With deep expertise in metallurgy, fluid control, and high-performance design, their hot blast valves are built not only for today’s challenges but also for tomorrow’s demands.

Applications Across Heavy Industry

These valves are indispensable in industries including:

  • Iron & Steelmaking: Core component in blast furnace hot blast lines

  • Mining & Smelting: For managing high-temperature process gases

  • Ceramics & Refractory Production: Where durability and heat control are mission-critical

Kurimoto valves enhance safety, reduce downtime, and increase operational reliability across sectors.

Conclusion

Kurimoto Hot Blast Valves 700–1900 mm set the industry benchmark for performance in extreme environments. Their dual-system design, rigorous quality assurance, and integration-ready features make them the trusted choice for engineers and plant operators worldwide.

Nichiboku Ltd – Your Industrial Partner

Delivering tailored Japanese engineering solutions — from precision measurement to high-performance valves — to optimize your operations worldwide.




Comments

bottom of page