This valve offers a combination of blow-off and recirculation valve functions, specifically designed for turbo engine applications operating with metered airflow management systems. It maintains compatibility with the engine management system's recirculation requirements.

Main features:

• Brass piston with new sealing technology.
• Variable spring preload.
• Top ratchet-type adjuster for positive and precise adjustment.
• Unique, conical, progressive spring that maintains boost pressure over a wide adjustment range.
• Unlimited piston travel and flow volume regardless of the amount of preload adjustment.

Valves from other manufacturers use cylindrical springs with adjustable preload, which are usually limited in piston travel and flow volume.