Aqua Lung Calypso Regulator - Yoke

The reliable, robust and refreshed Aqua Lung Calypso Regulator is compact, lightweight and perfect for beginner divers and dive centers. The Calypso regulator has been a dependable favorite for decades and has been emulated, but never equaled. Redesigned with a youthful twist, the new Calypso has an attractive new look to go with its always attractive price.

The Calypso is durable and dependable in even the most demanding conditions. It’s easy-to-maintain, lightweight, compact and comfortable design makes it a great fit for beginners and for use in dive centers. Dive centers will appreciate that this new version is compatible with previous versions.

Aqua Lung Calypso Regulator 1st Stage Specs:

1st stage technology Piston, unbalanced
Mechanism In line
Maximum working pressure 232 bar in DIN & yoke version
ACD system Transformation kit available
Number of HP ports 1 (7/16″ UNF)
Number of MP ports 4 (3/8″ UNF)
Medium Pressure 8.8 bar to 10 bar (127 psi to 145 psi)
Flow rate (surface, hose) 1300 l/min (45.9 cubic feet/min) HP = 200 bar (2900 psi)
Body Marine brass, bright chrome plating
Spring Stainless steel
Conical filter Sintered bronze
O-rings EPDM

Aqua Lung Calypso Regulator 2nd Stage Specs

2nd stage Unbalanced
Mechanism Demand valve, downstream poppet
Cracking effort 2.5 to 4 mbar (36 to 58 mpsi)
Venturi adjustment knob Yes
Box bottom, deflector, Venturi vane ABS
Purge cover Polyurethane
Mouthpiece, exhaust valve, diaphragm Silicone
Poppet Polyurethane
Adjustable crown Stainless steel
Overall work of breathing (WOB) scores Avg. 1.0 joules/liter

Aqua Lung Calypso Regulator image


The Aqua Lung Calypso Regulator is compact, easy to pack and easy to store. The high-flow non-balanced flow-by piston technology ensures excellent reliability and high performance. Enjoy more stable medium pressure out thanks to the large diameter piston. Designed with large holes in end caps for easy cleaning and better thermal exchange and improved resistance to freezing. Built with few components for easy maintenance.

The Aqua Lung Calypso Regulator yoke version includes a second filter, which can be change without dismantling and provides increased protection from polluted air. For dive centers, a numbered sticker can be used to identify the regulator, easing the renting and tracking process. Avoid water retention with the open yoke screw. The dust cap adjacent to the body protects the yoke inlet fittings against shocks. Regulator is made from chromed marine grade brass and has four 3/8″ UNF MP and one 7/16″ UNF HP outlets.

The downstream demand valve ABS housing second stage regulator comes with the unique Comfo-Bite mouthpiece, with patented roof of mouth bridge, reduces jaw fatigue. The removable and reusable clip facilitates quick and easy mouthpiece changes.

With few components and easy access to the exhaust valve through a clipped deflector, maintenance for the Aqua Lung Calypso Regulator is easy. The in-line Venturi knob offers effective and progressive adjustments using an ergonomic design for easy manipulation, even with gloves. The polyurethane purge cover offers significant abrasion- and tear-resistance, protects from shocks, allows for easy water purging, and decreases inhalation effort. Side openings prevent free flow when facing into currents or riding a scooter.

Reinforced polycarbonate makes the Aqua Lung Calypso Regulator second stage stronger. The Deflector splits up bubbles to decrease noise and protect the valve from expiration. Regulator comes with an owner’s manual.

Aqua Lung Calypso Regulator Features

  • Reliable, Robust and Refreshed Calypso Regulator
  • Compact, Lightweight and Perfect for Beginner Divers and Dive Centers
  • Dependable Favorite for Decades
  • Owner’s Manual

First Stage:

  • Compact, Easy to Pack and Easy to Store
  • High-Flow Non-Balanced Flow-By Piston Technology
  • Excellent Reliability and High Performance
  • Stable Medium Pressure from Large Diameter Piston
  • Chrome Plated Marine Grade Brass Construction
  • Four, 3/8″ UNF LP Ports
  • One, 7/16 UNF HP Ports
  • Large Holes in End Cap:
    Easy Cleaning
    Better Thermal Exchange
    Improved Resistance to Freezing
  • Built w/Few Components for Easy Maintenance
  • Second Filter Design:
    Change w/o Dismantling
    Provides Increased Protection from Polluted Air
  • Open Yoke Screw: Less Water Retention
  • Dust Cap Adjacent to Body, Protects Yoke Inlet Fittings Against Shocks

Second Stage:

  • Reliable Downstream Demand Valve Mechanism
  • Durable ABS Housing
  • Unique Comfo-Bite Mouthpiece, Reduces Jaw Fatigue
  • Reusable Mouthpiece Clamp
  • In-Line Venturi Knob Offers Effective and Progressive Adjustments
  • Polyurethane Purge Cover:
    Offers Significant Abrasion-and-Tear-Resistance
    Protects Shocks, Allows Easy Water Purging, and Decreases Inhalation Effort
    Side Openings Prevent Free Flow in Currents or Riding Scooter
  • Reinforced Polycarbonate Makes Second Stage Stronger
  • Deflector Splits Up Bubbles, Decrease Noise & Protect Valve from Expiration.

1st Stage Type                    Non-Balanced Flow-By Piston

LP Ports                                Four, 3/8″-24 UNF Thread

HP Ports                               One, 7/16″-20 UNF Thread

Adjustable 2nd Stage       Yes, Venturi

2nd Stage Type                  Downstream Demand Valve

Regulator Materials           First Stage; Chrome Plated Brass, Second Stage; ABS, Polycarbonate, Polyurethane, Silicone

Hose Thread                        3/8″

What’s in the box:

  • 1st and 2nd Stage Regulators
  • LP Hose
  • Owner’s Manual


See Aqua Lung’s Warranty Information here