High-efficiency equipment and integrated solutions for road-tunnel ventilation schemes (longitudinal, semi-transverse and transverse), engineered to support smoke control strategies, and safe evacuation conditions. Designed for reliable operation in demanding, highly corrosive environments.
Station and tunnel ventilation systems for metro networks, engineered to maintain passenger comfort in normal operation and to support smoke control for safe evacuation in fire scenarios. Designed for integration with wider station and line systems.
High-reliability ventilation solutions engineered for safe and efficient railway tunnel operation, supporting piston-effect management and effective smoke extraction in emergency scenarios.
Complete construction-phase ventilation packages including fans, VSD electrical panels, and ducting, adapted to staged workfaces and changing tunnel geometry.
Ventilation systems for cable and utility tunnels, designed to manage heat loads and temperature rise, maintain stable operating conditions and protect critical infrastructure with reliable, energy-efficient airflow solutions.
Engineering support and ventilation equipment for a wide range of underground assets, including car parks, hydroelectric projects, storage caverns, defense installations, and other specialised underground infrastructure, tailored to constraints and applicable standards.
Tunnel jet fans (KJF series) designed to deliver high thrust efficiency and safe operation in road and rail tunnels. Available in full stainless steel construction (AISI 316L), with stainless steel impellers for highly corrosive environments, and with high-temperature certification according to EN12101-3 up to F400 (400 °C/120 minutes).
Tunnel axial fans (KTF series) for permanent ventilation systems, available in reversible or unidirectional configurations and in horizontal or vertical arrangement, up to 3 m in diameter, designed for installation in ventilation rooms or shafts. Options include anti-stall devices or stall-free design, with high-temperature certification according to EN 12101-3 up to (400 °C/120 minutes).
Axial fans for temporary ventilation (KTF & MXA series) during tunnel construction, supporting a safe working environment via flexible or rigid ducted ventilation systems. Designed for rough handling and practical installation on construction sites, with variable-speed operation available when required.
Heavy-duty dampers for tunnel and metro ventilation applications, designed for fan isolation and airflow control, including square multiblade dampers for axial fans and circular butterfly dampers for jet fans. Manufactured in galvanised mild steel or high-grade stainless steel (AISI 304 or 316) with high-temperature certification and project-specific testing when required.
Bespoke acoustic silencers designed to meet noise requirements in underground infrastructure without compromising performance (airflow and pressure). Available as baffles-type silencers or axial-fan installations, and cylindrical-type silencers for direct fan connection via circular flanges. Acoustic performance is selected against octave-band insertion-loss targets while minimising pressure drop.
Electrical panels for tunnel ventilation systems are available in multiple configurations, including star–delta starters, soft starters, and Variable Speed Drive (VSD) solutions. VSD panels enable precise fan control, optimised starting, improved operational efficiency and advanced control functions. Configurations can be tailored for integration with ventilation equipment and wider tunnel infrastructure control systems.
To ensure regulatory compliance and safety in underground infrastructure, critical ventilation equipment such as fans and dampers should be tested and certified in accredited laboratories according to relevant international standards.
AMCA-certified testing may cover aerodynamic performance of axial fans (AMCA 210), jet fan thrust (AMCA 250), and acoustic performance (AMCA 300). Independent certification verifies declared performance data and provides a transparent basis for comparison with other AMCA-certified products.
Ventilation fans used in underground infrastructure must withstand high temperatures to enable smoke exhaust during fire events. Capability can be demonstrated through testing and certification in accredited laboratories in accordance with EN 12101-3, with certification levels up to F400 (400 °C for 120 minutes).
Email: pankaj@krugerindia.com
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The division builds on decades of fan and ventilation experience within Soler & Palau and Kruger, while concentrating specifically on the requirements of tunnels and underground infrastructure.
Manufacturing and testing facilities, including hubs in Asia, support project delivery, fire testing, AFAT, and quality control across the main product lines used in tunnel ventilation.
The offer is structured around safety, reliability, and long-term operation, with innovations such as stainless-steel impellers, monitoring, and AFAT helping to reduce lifecycle risk.
