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Fluid Handling & HVAC Components for Rail Vehicles

Flexfab is your source for durable, lightweight HVAC components for rail vehicles and components for diesel and electric powered locomotives. We offer a full line of standard and custom flexible hoses, sleeves and bellows. Our assemblies save installation time while reducing weight and component count by integrating a single component solution.

Passenger Rail HVAC

Flexfab offers a full line of standard and custom flexible hoses and sleeves for passenger rail HVAC systems that conform to EN45545, NFPA130, and other international standards.

Light-Weight rigid Ducting that can incorporate thermal and acoustical insulation to operate reliably in a wide range of temperature conditions. They are some of the lightest products in the industry!

Flexible Ducting: Low pressure flexible ducts for positive and negative air pressure that operate in a wide temperature range.

Custom designs: Round to rectangle, we offer tapers in variable dimensions.  Designed and built to your custom requirements.

Hoses: Lightweight, low pressure hoses designed and built to your specifications.

Insulation: Multiple options are available to meet any R-value and thickness requirement.

Tapers and Variable Diameters: Transition between different diameters seamlessly over varied lengths.

Bellows: Ideal for high pressure applications. Offered in bonded, clamped or crimped fittings. Customizable for individual offset and extension requirements.

Silencers/Mufflers: Flexfab can manufacture a custom silencer for your noise reduction needs.

Locomotive Assemblies

Flexfab’s selection of locomotive assemblies include:

  • Charge Air Turbo Ducts
  • Coalescer Hoses
  • Coolant Hoses

Flexfab integrates your flexible, composites, clamps, flanges, pipes, brackets and insulation needs into a single component solution. Flexfab locomotive assemblies have been proven to be highly reliable in the most extreme engine environments.

Charge Air Turbo Assembly: Flexfab’s patented charge air turbo assembly uses large diameter hoses and bellows. This product is ideal for high temperature, high pressure applications.

Turbo Air Elbow: Large diameter turbo air elbow is available with or without V-band hardware intended for use on the cold side of the CAC system.

Charge Air Hose: Large diameter charge air hose for use in high temperature, high pressure applications. Available with or without hardware.

Charge Air Bellows: Large diameter charge air bellows for use in high temperature, high pressure applications.

Coalescer Assemblies: Coalescer assemblies are optimized for crank case ventilation. This product handles heavy oil vapors and hot air with ease.

Coalescer Hose: Coalescer hose has the same functionality and dimensions of the coalescer assemblies.

Locomotive Engine Components

Flexfab offers standard and custom locomotive engine components for handling positive and negative air flow and a wide range of operating temperatures.

EGR Bellows: Flexfab offers large and small diameter bellows or hoses designed to

withstand exhaust gases.

Charge Air: Flexfab has your low and high pressure demands covered with unlimited size and configurations to satisfy custom needs.

Coolant Hose: For use in high temperature and pressure engine environments, without being affected by coolant additives.

Air Inlet Ducts: Wide and flexible, vacuum resistant products available in any length.

Elbows: Standard and custom elbows are available to meet your specific requirements.

Locomotive Sleeves and Connectors

Flexfab’s variety of locomotive sleeves and Connectors offer flexible solutions for extreme environments when dependability and durability are a necessity.

Passenger Rail Traction Motor Ducts

Flexfab’s passenger rail traction motor ducts are capable of withstanding harsh exterior environments on the underside of rolling stock. They are available in custom dimensions and designs for individual offset and extension requirements.

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Flexfab Images

Flexfab HVAC Duct


Flexfab Insulated Duct

Insulated Duct

Flexfab Muffler Silencer

Muffler Silencer

Flexfab Lightweight Flexible Duct-1

Lightweight Flexible Duct

Flexfab Rigid to Flexible

Rigid to Flexible

Flexfab Flexible with Fittings

Flexible with Fittings

Flexfab Flexible Taper

Flexible Taper

Flexfab Flexible Reducer

Flexible Reducer

Flexfab Flexible Drain Hose

Flexible Drain Hose

Flexfab Locomotive Charge Air3

Locomotive Charge Air

Flexfab Locomotive Charge Air2

Locomotive Charge Air

Flexfab Locomotive Charge Air1

Locomotive Charge Air

Flexfab Locomotive Charge Air with Fittings

Locomotive Charge Air with Fittings

Flexfab Coolant Hose with Fittings

Coolant Hose with Fittings

Flexfab Rail Grouping

Hoses and light-weight flexible ducting for Movement of fluids and air


Mufflers/silencers, tapers, variable diameters, Sleeves and elbows for Rail Vehicle HVAC systems

Flexfab Products

Light-weight rigid ducting for Rail Vehicle HVAC systems

Flexfab Documents

Flexfab News

Flexfab Videos

Flexfab Social

Contact Flexfab

Use the form opposite to get in touch with Flexfab directly to discuss any requirements you might have.

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