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Non-Adjustable Downstream Valve
The snorkel has a automatic closing dry top valve which seals the snorkel off from allowing water to enter the snorkel when duck diving
16mm Single Rubber
DUI uses a proprietary blend in their silicon seals which having been tested by divers has been found to be more durable than other silicone seals on the market
DUI Zip Wrist Seal Care Non-Adjustable Downstream ValveDESCRIPTION The patented DUI Zip Seal system offers the ability to change a neck or wrist seal out in just minutes meaning you never need miss a dive again. Keep a replacement system in your spares kit so that you are your own mobile repairer and can continue to enjoy your days planned dives. DUI wrist zip seals are available in three options consisting of silicon, latex and heavy duty latex. Latex is the most durable zip seal material option being
