Argonaut Kraken
 

• "The Argonaut is a completely new double hose regulator which retains an attractive vintage appearance, but incorporates state-of-the-art modern features:
   
• 1st Stage relies upon a balanced diaphragm featuring high flow capability. This engineering feature effectively limits intermediate pressure change; thus guaranteeing effortless, consistent performance with any tank pressure or any dive depth.
   
• 1st and 2nd stages are environmentally isolated to insure absolute reliability in all weather and water conditions.
   
• The regulator contains 3 low pressure ports for optimal hose positioning. This feature allows the diver to use any variety of low pressure accessories. The ports are industry standard 3/8” UNF sized.
   
• 1st stage also contains a high pressure port allowing the diver to use either a stand-alone submersible pressure gauge, or a transmitter unit. The port is again, the current industry standard 7/16” UNF size.
   
• Totally modern 2nd stage design that incorporates features such as: adjustable seat, large ultra flexible silicone diaphragm using a lever geometry designed for optimal mechanical advantage with low friction, and adjustable venturi assistance. The replaceable and adjustable hard seat (volcano orifice) permits ultra-fine tuning.
   
• Internal parts that are chosen for maximum durability and ease of availability. Food grade silicone utilized for items such as hoses, mouthpiece, and low pressure diaphragms for extra-long life and easy maintenance.
   
• 1st and 2nd stages manufactured from attractively triple-plated brass alloys, with lightweight, corrosion proof materials used for the housing.
   
• Main body interfacing surfaces sealed with an O-ring rather than a flat gasket.
   
• Effortless, natural breathing characteristics due to advanced design vacuum assisted venturi action, and a high flow/ ultra-low resistance exhaust system.

In essence, a double hose regulator that displays the classic lines of a vintage model with the performance of a 21stcentury design."

Reference:

1. www.vintagedoublehose.com