Dump Valves & Accessories

Dump valves, also known as blow-off valves, are crucial components in motorsport vehicles equipped with turbochargers. These valves release excess pressure from the turbocharger system when the throttle is closed, preventing compressor surge and protecting the turbocharger from damage. When the throttle closes rapidly, the turbocharger continues to produce boost, causing pressure to build up in the intake system. The dump valve quickly vents this excess pressure, typically into the atmosphere, creating a distinctive sound and ensuring smoother operation.

There are two main types of dump valves: atmospheric and recirculating. Atmospheric dump valves release the excess air directly into the atmosphere, producing the characteristic 'whoosh' sound. This type is popular in motorsport applications for its audible feedback and straightforward design. Recirculating dump valves, on the other hand, redirect the excess air back into the intake system before the turbocharger, maintaining a closed-loop system. This method is quieter and can help improve throttle response by keeping the air within the system.

Accessories for dump valves include various springs and diaphragms that allow for fine-tuning the valve's operation to match the specific boost levels and requirements of the engine. High-quality materials, such as billet aluminium and stainless steel, are often used to withstand the high pressures and temperatures encountered in motorsport environments. Additionally, adjustable valves provide the flexibility to alter the release pressure, ensuring optimal performance across different driving conditions. Properly engineered fitting kits ensure secure installation and integration with the existing turbocharger system, maximising the effectiveness and reliability of the dump valve.