Forge Single Piston Ram Dump Valve

An Atmospheric Dump or Blow off valve suitable for all turbo cars without an Air Flow Meter. Made from billet alloy and using a single piston this valve will run faultlessly without the need for attention and eliminates the longevity problems associated with the original diaphragm valves Single-Piston/Diaphragm Atmospheric Valves and Valve Fitting Kits “All Forge Motorsport Single-Piston and Diaphragm Atmospheric Valves have been designed and built with the intent of venting 100% of the residual charge air remaining in your forced induction system to the atmosphere at throttle lift.