TradeAir Pneumatic Undercoating Gun

The TradeAir Pneumatic Undercoating Gun is a semi-industrial grade spray tool designed to deliver consistent, high-coverage results for underbody protection and rustproofing applications. Built for durability and ease of use, this suction-feed gun is ideal for spraying rubberised coatings, bitumen, wax-based sealants, and corrosion inhibitors. With a working pressure of 4 bar (60 PSI) and an average air consumption of 321 litres per minute, it’s well suited for automotive workshops, panel beaters, and DIY users seeking professional-quality finishes. The gun requires a minimum 3HP (2.2kW) air compressor and features a standard 1/4” BSP air inlet for convenient connection. \n \nSemi-industrial design offers durability for frequent workshop use: Constructed with robust internal components and a tough body casing, this undercoating gun is built to withstand the demands of light industrial and extended use. It's ideal for garages and auto body shops that require a reliable, efficient tool for ongoing rustproofing or protective coating tasks. The overall build quality ensures consistent operation even during high-volume projects. \n \nSuction-feed mechanism provides strong material flow for thicker coatings: Designed to work with dense, viscous undercoating materials, the suction-feed system draws the product up efficiently and delivers a smooth, even spray pattern. This makes it ideal for rubber-based or bituminous coatings where a pressure-feed system may struggle. The design also helps reduce clogging and minimises waste. \n \nStandard 1/4” (6.35mm) BSP air inlet ensures compatibility with most setups: The gun features a universally accepted air inlet fitting, allowing seamless connection to a wide range of air hoses and workshop air systems. Whether you're integrating it into an existing setup or using it with a mobile compressor, the 1/4" BSP inlet ensures fast, secure attachment and minimal setup time. \n \nOptimised to operate at 4 bar (60 PSI) for balanced performance: With a working pressure designed to deliver ideal atomisation and flow, the gun performs well under standard workshop conditions. At 4 bar, it provides the right balance of pressure and material control for achieving smooth, even coverage without overspray or uneven build-up, which is essential for protective applications under vehicles or in cavities. \n \nHigh air consumption capacity delivers powerful spray output: Consuming 321 litres per minute (11 CFM), this gun is designed to maintain steady flow and coverage, even with thicker materials. It allows users to coat large areas quickly and efficiently, reducing downtime and ensuring a uniform layer of protection on vehicle undercarriages, wheel arches, or panels. \n \nRequires minimum 3HP (2.2kW) compressor for optimal operation: The air demand of this gun makes it suitable for use with mid- to high-range compressors. A 3HP unit or larger provides the consistent airflow needed for uninterrupted performance, ensuring that the coating material is atomised properly and applied with professional-quality results in every session. \n \nIdeal for automotive undercoating, rust prevention, and body cavity protection: Whether you're restoring a classic car, protecting a 4x4 from salt corrosion, or sealing wheel wells from moisture ingress, this undercoating gun is purpose-built for the job. It can handle a wide range of thick liquids and is suited for both new applications and maintenance coatings. \n \nThe TradeAir Pneumatic Undercoating Gun offers reliability, efficiency, and strong material delivery in one semi-industrial package. Its robust suction-feed design, workshop-ready features, and compatibility with standard compressors make it a go-to solution for automotive rustproofing and surface protection. Whether you're a professional or a serious DIYer, this gun delivers the results you need with every spray.