DEFender™ Insulation Jackets Keep DEF Pumps Running All Winter
​The DEFender™ Diesel Exhaust Fluid Insulator
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Cold weather is a reality for diesel fueling operations across the Midwest and other cold-weather regions. When temperatures drop into the teens and below, DEF systems are at risk of freezing—slowing fueling, increasing service calls, and disrupting daily operations.
DEFender™ insulation jackets install quickly, require no electrical connection, and allow operators to protect DEF equipment without replacing existing infrastructure.
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DEFender™ systems are engineered specifically for DEF equipment, not adapted from generic insulation products. The modular design allows for easy inspection, maintenance and part replacement, with individual components swapped as needed rather than replacing the entire system.
DEFender™ Features
Bartelt Advantages
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Faster lead times and responsive customer service
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Replacement parts available as needed
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Proven industrial fabrication expertise
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Consistent quality across repeat orders
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Engineered for long‑term durability
Bartelt delivers practical advantages that make ordering, installation, and long‑term performance easier to manage.
Fast Fabrication & Delivery to Fueling Stations
Bartelt Insulation controls the process from quote through fabrication and delivery— so DEFender™ systems move fast.
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Application-specific patterning ensures accurate fit
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Documented designs allow for easy reorders and expansion
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Consistent results across single sites or multi-location fueling networks
This speed and repeatability make DEFender™ ideal for fleets, municipalities, and fuel providers operating multiple stations.
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Built for Real-World DEF Pump Applications
Each DEFender™ system is fabricated to order based on the specific equipment and site conditions. Once patterned, they can be quickly reproduced—making DEFender™ a practical long-term solution for operations managing multiple DEF locations.