This Dump Valve is a truly remarkable valve that gives a combination of Vent To Atmosphere and re-circulation valve operation all at the same time and has been specifically designed for the many turbo engined applications that operate metered airflow management sysyems.

This means you get all the noise of a Vent To Atmosphere valve whilst retaining the compatibility with the re-circulation requirements of the Engine Management System.

This valve uses a unique piston along with a variable spring preload incorporating a ratchet type top adjuster that will allow for the positive and precise adjustment to match the valve to your engine. This is achieved by using a unique single, conical, progressive rate spring that can allow for the retention of boost pressure over a wide adjustment range. This unique spring design also allows for unrestricted piston travel and flow volume regardless of the amount of pre-load adjustment added to the spring. Other manufacturers valves using cylindrical springs with adjustable pre-load often experience restricted piston travel and a reduction in flow volume.


• Dump Valve Type: Splitter/Dual Port.
• Dump Valve Finish: Annodised Black.
• Inlet Size: 25mm.
• Outlet Size: 25mm.
• Included Options: Either full Vent To Atmosphere or fully re-circulating.