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We warned you in this post a year ago about miflex hoses. Now DAN (Divers Alert Network) posted a additional issue with these hoses. They allow for polymorphic crystallization corrosion on the inside constricting & potentially blocking the air flow. Cyclical heating & cooling at oil-water interfaces combined with the molecular structure of the internal tube lining promotes crystallization of these materials allowing growth to accumulate over time & that is just what’s happening inside! The external fiber woven sheath acts like a cheese grater. The hose sheath fibers collect sand, soils & vegetation. These hoses fray & the plastic sheath fibers stick out & can stab you! What is wrong with rubber? They are stronger, last longer, flex as much & cost less.
Here is a piece of diving history! We recently serviced this Royal Aqualung DA Aquamaster double hose regulator for David Knight. It now works better than new. Something to consider for photo as the exhaust bubbles are out the back plus the retro cool factor is over the top!
Keep an eye out for the new shop giant inflatable dive cylinder 35′ high & 4′ in diameter! We will have this notable monstrosity staged outside & on the shop in various areas for all to enjoy! 
