Check the listing for details. Atomic ST1 Swivel Sealed Scuba Diving Regulator. Condition: New. Listed at 1399.95 USD. Atomic ST1 Swivel Sealed Scuba Diving RegulatorSKU: ATMST1SSMfr. Part: 03-0060-6P Item Includes1'st and 2'nd Stage Regulators - Low Pressure Hose and Owner's Manual DescriptionThe Atomic Aquatics ST1 Swivel Sealed Regulator boasts a stainless steel first-stage, offering corrosion resistance similar to titanium but at a lower cost. Environmentally friendly and 100% recyclable, 316-grade stainless steel doesn't need protective plating. With a balanced flow-thru piston design, the Atomic ST1 utilizes Atomic's high-flow stainless steel piston and jet seat system. Its self-lubricating high-pressure piston seal ensures low friction and maintenance. Atomic's valve seats, machined from a strong aerospace-grade material, guarantee reliability and 2 years or 300 dives without service. The ST1's diving performance excels even at low tank pressure and features a freeze-protected, factory-sealed first stage to prevent contamination. Nitrox-ready up to 40% and offering swivel turret LP ports, the first stage has 2 HP and 5 LP ports. The ST1's second stage offers balanced linear flow for effortless breathing at all depths and conditions for scuba diving. Built with a titanium demand valve body, lever, and sealing orifice, it's made to last. The high-quality silicone rubber diaphragm and Atomic's patented seat-saving dynamic orifice extend the life of the second-stage poppet seat. Equipped with Atomic's patented automatic flow control (AFC), the ST1 second stage optimizes breathing resistance at all depths. A soft, over-molded rapid adjustment knob is available for special situations. Atomic's comfort swivel eliminates the "pulling effect" when turning underwater, allowing 30 Degree of rotational movement without kinks. The regulator includes a 3/8" threaded, 32" low-pressure hose and weighs 2.3 lbs. An owner's manual is also provided.FeaturesAtomic ST1 Swivel Sealed Regulator:Nitrox Ready for Mixtures Up to 40% Out-of-the-Box3/8" Threaded 32" (81.3cm) Low Pressure HoseWeight: 2.3 lbs. (1059 g)Owner's ManualFirst-Stage:Solid 316-Grade Stainless SteelNot Harmful to the Environment 100% RecyclableBalanced Flow-Thru Piston DesignAtomics Jet Seat High-Flow PistonExclusive High-Pressure Piston Seal System is Self-LubricatingSelf-Lubricating for Low Friction and Low MaintenanceNo Sharp Edges: Conical Seat and Blunt-End PistonPrecision Machined from an Extremely Strong Aerospace Specification Seat MaterialMost Reliable Seat System in the IndustrySeat System: 2-Years or 300 Dives w/o ServiceFreeze Protected with Factory-Sealed First-StageFreeze Protected: Prevents Contamination, Silt and Sand2 High-Pressure (HP) 7/16" Ports5 Low-Pressure (LP) 3/8" PortsLP Port Swivel Turret for Ease of Hose RoutingSecond-Stage:Balanced Linear Flow DesignPneumatically-Balanced Poppet Second-StageBuilt-to-Last: Titanium Demand Valve Body, Lever and Sealing OrificeHigh Quality Silicone Rubber DiaphragmAtomics Patented Seat Saving Dynamic OrificeSecond-Stage Orifices, Floating Valve DesignAtomics Patented Automatic Flow Control (AFC)Unique Diaphragm Activated Vain Automatically Controls the Flow and Venturi-EffectOptimum Breathing Resistance at all DepthsRapid Adjustment Knob for Rare Special SituationsAtomics Comfort Swivel: 30° Rotational Movement without Binding or KinkingSpecifications1'st Stage TypeBalanced Flow-Through PistonLP PortsFive 3/8" PortsHP PortsTwo 7/16" PortsAdjustable 2'nd StageYes, Flow Control KnobNitrox CompatibleYes, Up to 40%2'nd Stage TypePneumatically-BalancedRegulator MaterialsFirst-Stage: 316-Grade Stainless Steel Second-Stage: Demand Valve Body, Lever & Sealing Orifice TitaniumHose Thread3/8"Hose Length32" (81.3cm)Total Weight2.3 lbs. 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