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GENERATION I
1957-1977
The Generation of Illustrious regulators

From 1957 to 1977, the brand produced some of the most iconic "vintage" regulators, including the AQUILON and the SPIRO 8. This period was marked by numerous innovations, such as the plastic piston of the SPIRO 8, the piloted valve of the second stage of the ALIZÉ, and the DIN-convertible yoke of the ALIZÉ and the SPIROLUNG.

However, with the widespread adoption of the direct system, the pressure gauge, and the octopus during the 1970s, these regulators, designed for minimalist scuba equipment, became obsolete.

The era of diving simply with a tank equipped with a reserve tank, a strap, a regulator, a pair of fins, and a mask came to an end in the early 1980s, giving way to modern diving.

AQUAMATIC 
1957-1962
AQUAMATIC

This is the legendary AQUAMATIC. Launched worldwide in May 1957, it wasn't until 1984 that the brand offered a new regulator with a second stage featuring a non-metallic housing.

Its iconic design inspired other manufacturers, such as POSEIDON and OCEANIC.

Today, it's becoming increasingly rare to find in good condition. Time is against it, particularly due to the aging of the rubber. Furthermore, its commercial release was brief: it was discontinued in 1961 in France and in 1960 across the Atlantic.

AQUILON 
1963-1978
AQUILON

The AQUILON is an iconic two-stage regulator from the brand, produced between the 1960s and 1970s. It is the French version of the CALYPSO I, launched in the United States and France in 1962.

This model comes in two generations. The first, manufactured from 1963 to 1971, does not have a high-pressure outlet. It is distinguished by a hose held by stainless steel clamps and, inside the second stage, by a hexagonal lever barrel. Its Venturi system is rudimentary: the nozzle has a partially partitioned hole. An evolution occurred between 1965 and 1970 with the addition of a curved flap on the upper part of this hole (see photos).

The second generation, released in 1972 and produced until 1977, features mechanically crimped hoses and offers the option of a high-pressure outlet. It is available in a 1/600 version or with a male outlet for the British market. Inside, the second-stage barrel adopts a round cross-section (see photos).

In 1977, an extremely rare prototype was created: a version equipped with a ball joint allowing the addition of two MP outlets. This final attempt at adapting it to modern diving, inspired by the "Christmas Tree" concept, marked the final leap of a legendary regulator.

SPIRO 8 
1968-1978
SPIRO 8

The SPIRO 8 is an innovatively designed regulator featuring a plastic piston first stage. Designed to be robust and resistant to icing, its inventor, Raymond Deloire, nicknamed it the 2CV of regulators.

It was initially intended for the growing diving clubs. It was associated with an economical range for young people, called SPIRO J (J for young people).

The first models from 1968 were coated with black Ryslan on the yoke and second-stage housing, applied using an electromagnetic process and then baked. However, this coating did not last, leading LA SPIROTECHNIQUE to chrome-plated the parts after sandblasting, making models with this coating relatively rare today.

Due to its robustness, among other things, this regulator quickly became a favorite with the military, as well as the gendarmerie and fire departments.

It is available in a standard version and a PRO version, the latter featuring a ball joint adding two MP outlets. Like the AQUILON regulator, models prior to 1972 had hoses crimped with stainless steel clamps, and the very first models had a hexagonal-headed yoke screw without a knurled insert. In addition, the SPIRO 8 offered a prototype version, released only in 1977: a redesigned first stage with a wide yoke to fit the new cylinder valves convertible from DIN to yoke. And yes, its major drawback is that the yoke is an integral part of the first-stage body, preventing DIN mounting.

ALIZÉ 
1972-1973

ALIZÉ S

1974-1978
ALIZÉ & ALIZÉ S

The ALIZÉ regulator was launched in 1972 in response to a request from LA SPIROTECHNIQUE's sales department, seeking to compete with PIEL's newly launched MICRONIC M400 miniature regulator.

According to Raymond Deloire, it was imperative to act quickly, which led to an unreliable first version. Despite some subsequent improvements, such as changing the whiskers and adding a grid to the nozzle outlet, the model was replaced by the ALIZÉ S in 1974.

Inspired by the James Bond film, its second stage also enjoyed some success thanks to "Star Wars: The Empire Strikes Back" in 1980. An interesting anecdote is that the regulator was initially supposed to be called SPIRAX, but the name ALIZÉ was ultimately chosen, in reference to AIR LIQUIDE's internal newsletter.

This is the first regulator in the world to use a pilot-operated valve for the second stage and to feature a DIN convertible yoke. The design of the second-stage mechanism is inspired by the technology developed by LA SPIROTECHNIQUE for fighter jet masks.

Unfortunately, this mechanism proved too fragile for use in a marine environment. Known for its fragility and sensitivity to icing, it was abandoned in 1978. Its excessive miniaturization made it impossible to adapt additional low-pressure outlets to accommodate an octopus and a direct system, which contributed to its obsolescence with the arrival of modern diving, effectively rendering it obsolete.

SPIROLUNG
SPIROLUNG
1975-1978

The SPIROLUNG is a regulator designed in line with the ALIZÉ S. It is a hybrid model combining a second stage inspired by the SPIRO 8, equipped with a revised cover, and an enlarged version of the ALIZÉ first stage, integrating the DIN convertible yoke. Like the SPIRO 8, it is available in two versions: a standard version and a PRO version, the latter offering two additional MP outputs.

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