The Argo exhaust valve is a high-performance valve suitable for all areas of recreational and technical diving. Like all Si Tech exhaust valves, the Argo is extremely sensitive to pressure changes and provides the diver with excellent buoyancy control. The top cover design makes it ideal for use with heavy work gloves, while still ensuring adequate gas evacuation during ascent.Argo exhaust valve is compatible with the following Si Tech valve port:

• https://ddglobalstore.com/en/prodotto/pu-valve-seat/
• this PU valve port
• internal PU NGR valve port