Azimuth AF trimix rebreather

These pages cover the  “Trimix version” of the standard “AZIMUTH Rebreather “.
The Azimuth trimix version is called the “AF” version.
Therebreathersite Azimuth AF 001
Therebreathersite Azimuth AF 002
Therebreathersite Azimuth AF 003
Therebreathersite Azimuth AF 004
Therebreathersite Azimuth AF 005
Therebreathersite Azimuth AF 006
Therebreathersite Azimuth AF 007
Therebreathersite Azimuth AF 008
Therebreathersite Azimuth AF 009
Therebreathersite Azimuth AF 010
Therebreathersite Azimuth AF 011
Therebreathersite Azimuth AF 012
Therebreathersite Azimuth AF 013
Working principle:
Semi-closed cyclical circuit (open in emergency)
Specifications of the gas:
Two different gases (usually NITROX and TRIMIX)
Purifying material:
Sodalyme or other CO2 absorbent
Breathing bag:
2 x 6,2 liters
Canister capacity:
2,35 Kg
Dive time duration:
Depends on gas used
Operating temperature:
-1° +35°
Max depth:
Depends on gas used - technically 120 m.
Maximum buoyancy:
25 kg
Weight read to use:
45 Kg in air, neutral in water

Functionality of the Azimuth:

Azimuth is a semi-closed cyclical circuit breathing apparatus , giving constant and controlled flow.
The gas mixtures follows a single direction circular path utilizing two different separated way of circulation, to and from the breathing bag. Especially, the constant flow of gas mixture coming from the single cylinders,( trough the respective dosing group) goes in to the inhalation breathing bag and reaches the corresponding pressure to the diving depth.

The diver breathes the gas mixture contained in the inhalation breathing bag trough the corrugated hose connected to it, via the mouthpiece assembled on the four-way valve and exhales the gases produced by the breathing process in to the exhalation hose connected to the exhalation breathing bag.
The excess pressure generated by the constant flow is vented from the relief valve connected to the bag itself by means of a short flexible hose.

Gases from the exhalation breathing bag go in to the filter and once purified from the carbon-dioxide, enter into the inhalation breathing bag.

Therebreathersite Azimuth AF 014
Therebreathersite Azimuth AF 015
Therebreathersite Azimuth AF 016
Therebreathersite Azimuth AF 017
Therebreathersite Azimuth AF 018
Therebreathersite Azimuth AF 019

The calibration set for Azimuth e Azimuth AF , optionally supplied, includes all the necessary instruments for a correct pre-diving preparation of the rebreather.

It contains: a flow-meter complete with hoses and fittings, for a correct control of the continuous flow calibration injected in the inhalation breathing bag.

A pressure gauge with a range from 0 to 25 mbar, complete with hoses and fittings, necessary for a correct pressure control of the Azimuth relief valve activation.

A spanner for a correct tightening of the cylinder first stages.

A filter filling set for the soda lime including a plug to avoid that the soda lime could casually go into the chamber directly connected to the inhalation breathing bag and a funnel in order to refill with the right quantity of soda lime.

Therebreathersite Azimuth AF 020

JW

Therebreathersite was founded by Jan Willem Bech in 1999. After a diving career of many years, he decided to start technical diving in 1999. He immediately noticed that at that time there was almost no website that contained the history of closed breathing systems. The start for the website led to a huge collection that offered about 1,300 pages of information until 2019. In 2019, a fresh start was made with the website now freely available online for everyone. Therebreathersite is a source of information for divers, researchers, technicians and students. I hope you enjoy browsing the content!