Aqualung Helix Pro DIN Regulator

Quick answer: This is a regulator from Aqualung.

Why it's worth a look

A regulator doesn't come in sizes, but comfort still matters. Owning your own means you know its service history, you can fit a mouthpiece that suits your jaw, and you can route the hoses so nothing tugs when you turn your head.

Specs

• Brand: Aqualung
• 1st Stage Type: Over-Balanced Diaphragm
• LP Ports: Four, 3/8"-24 UNF Thread
• HP Ports: Two, 7/16"-20 UNF Thread
• Adjustable 2'nd Stage: Yes, Dive/Pre-Dive Venturi (Free Flow) Switch
• Nitrox Compatible: Yes Up To 40% O2
• 2'nd Stage Type: Pneumatically Balanced Downstream Demand Valve
• Materials: First Stage: Chrome Plated Brass Second Stage: Techno-Polymer, Silicone
• Hose Thread: Delicate Internal Parts Not Exposed to Contaminants: Salt, Sand, Chlorine or Pool Acids Requires Less-Maintenance T-Shape: Less Brass Lighter Weight, More-Compact Four, 3/8" UNF LP Ports Two, 7/16 UNF HP Ports Ports Angled for Optimum Hose Configuration Service Pressure: 300 bars (4350 psi) Second Stage: Pneumatically Balanced Design Delivers Gas at Constant Pressure Easy Work-of-Breathing Breathing Effortless Independent of Depth or Tank Pressure Venturi Switch: Helps Prevent Free-Flow Works at Surface & when Regulator Out-of-Diver's Mouth Easy-to-Grip Venturi Lever Performance Boost at Depth Heat Exchanger (patented): Surrounds Valve Mechanism Dissipates Cold Caused by Gas Expansion Draws-In Warmth of Ambient Water Comfo-Bite Mouthpiece Installed Mouthpiece Reduce Jaw Fatigue Standard w/Bite Wings In-Box Reusable Mouthpiece Clamp

Before you buy

Match DIN or yoke to the tank valves you use most, and confirm a local shop can service it. Have it set up and bench-checked by a qualified technician before your first dive. Read How to Pick Scuba Regulators That Fit Your Diving. More options: Regulators.