This high-performance regulator boasts a balanced first stage coupled with a pneumatically balanced second stage. The smooth, quiet breath is sure to enhance your diving enjoyment. Designed for water temps above 50°F / 10°C. The Comfo-bite™ mouthpiece, with its patented bridge, virtually eliminates jaw-fatigue. Compatible with EAN40 out of the box.

First Stage: The first stage is a balanced diaphragm type that offers consistent performance from start of dive until end of dive, regardless of depth. 1 HP port and 4 MP ports are available.  Available in yoke only.

Second Stage: Pneumatically-balanced second stage results in smooth, easy breathing. The large purge button on the AT20 is easy to operate even with thick gloves. The integrated venturi control provides a performance boost at depth while preventing unwanted freeflow at the surface. An extremely efficient exhaust valve improves the breathing performance of the regulator.  The Comfo-bite™ mouthpiece virtually eliminates jaw-fatigue.  Offers a compact, integrated exhaust tee.

Free Parts for Life Program (Regulator Service Agreement)

The Free Parts for Life Program allows the customer to receive free parts when the regulator is due for overhaul. Free parts consist of the normal replacement items as found in the Regulator 1st & 2nd Stage Service Kits. Labor charges are not covered. Assuming the program guidelines are followed, the Free Parts for Life Program will apply to the life of the regulator and will significantly reduce the cost of ownership. This program is in addition to the standard product warranties outlined in the owner’s manual. The Free Parts for Life Program is a commitment by you (the Regulator owner), your Aqua Lung Dealer and Aqua Lung. To participate, you must be the original owner and have purchased the regulator from an Authorized Aqua Lung or Apeks America Dealer. The regulator must be brought to an Authorized Dealer at least once a year for inspection or overhaul according to the below schedule:

Year #1: Inspection

Year #2: Overhaul

Year #3: Inspection

Year #4: Overhaul

Etc.

To keep the Free Parts for Life Program active, both inspections and overhauls need to be documented in the Annual Service & Inspection Record included in the Owner’s Manual CD or the Record can be found online. If an inspection or overhaul is missed, the regulator no longer qualifies for the Free Parts for Life program. Visit Water World SCUBA, your local Aqua Lung dealer, for more information.