The DV26 or ‘EVO’ twin piston dump valve is designed for turbocharged cars that have fuel injection with an airflow meter or metering unit. The ingenious second piston allows cars to idle perfectly and for the fuel mixture to be unchanged which resolves all the running problems traditionally associated with diaphragm valves. It has a 25mm push on base and comes supplied as standard with a straight 4mm polymer push on vacuum/boost connection. The DV26 has a 60psi boost capability. Certain applications require a valve with a stronger spring, referred to us a DV26 ‘D’ Type. All Valves are available in 4 finishes:- Highly polished silver, red, blue or black anodised.

Bailey Motorsport manufacture the largest range of dump valve fitting kits in Europe and now have most popular turbo’d vehicles covered. These kits are designed with DIY fitting in mind, come packaged with car specific fitting instructions and all components required to complete installation. If your vehicle was equipped from the factory with a re-circulating valve, these kits will either remove or blank off the O.E. valve so that our valve can function correctly. As most kits contain silicone hose, we offer a choice of blue, red or black hose to co-ordinate with your engine bay and choice of piston dump valve.