Détendeur SÉRIE 20/10

The 20 series regulator is the first of the series generation. There are 2 versions, called 20/10 series and 20/20 series and are only differentiated by the HP air inlet connector on the first floor. The 20/10 uses an 18.5mm diameter seat (French standard) and the 20/20 uses a 17.8mm diameter seat (international standard). This regulator has the serial number 8276.

Détendeur SÉRIE 20/20

Here is the 20/20 with its seat I. The 20 series regulators are of robust construction, they were designed for diving schools. The first stage is piston, the latter is plastic like that of the SPIRO 8. Equipped with an HP output and 3 MP outputs mounted on a turret. The defect of this regulator which will be fatal to it is that the fixed bracket does not allow a DIN mounting. Released in 1978, this regulator was abandoned in 1981 and replaced by the second generation of the 25 series.

Détendeur 20 inject technisub

I present here the Technisub version of the 20 series, called 20 INJECT in Italy. It only exists with seat F with a diameter of 18.5mm.

Détendeur SÉRIE 25/10 première génération

In 1978 the first generation 25/10, 25/20 and 25/30 series was released. The bracket is swivel on this series which allows to mount a DIN version. The first two are in stirrup with the HP seats on the first floor respectively in French and international standards. The 25/30 represents the DIN version.

The first stage is again piston, this time metallic. It is similar in shape to that of the 20 series but without the turret for the MP outputs.

Détendeur SÉRIE 25/20 première génération

In this photo the 25/20 first generation. This very difficult to find piece was exchanged with a French collector who wishes to remain anonymous. I thank him because without his help he would probably still be missing from my collection. It should be understood that this series was sold from 1978 to 1980 and that this model was mainly marketed in England.

Détendeur SÉRIE 25/30 première génération

Here is the first generation 25/30 mounted in DIN. It has an atypical feature at the level of the first stage is that it only allows a single MP connection, it does not even have an HP output to connect a pressure gauge. If someone can explain to me for what purpose this regulator was used it would be with great pleasure!

Détendeur SÉRIE 25/10 seconde génération

In 1981 the second generation 25/10, 25/20 and 25/30 series was released. The first two are in stirrup with the HP seats on the first floor are respectively to French and international standards. The 25/30 represents the DIN version. This new generation is killing two birds with one stone: it redesigns the first stage mastoque of the first generation and also replaces the 20 series.

This 20/10 regulator has the serial number 8069, it probably dates from 1982.

Détendeur SÉRIE 25/20 seconde génération

Here is the 25/20 of the second generation that I managed to find in England. The first stage of this series is still piston, its size has been considerably reduced, but it is still without turret for M P outputs . A very pretty piece really not easy to find!

Détendeur SÉRIE 25/30 seconde génération

The 25/30 second generation with its DIN connector. A very nice new piece. Not easy to find too ... because it comes from the German market.

Détendeur SÉRIE 40/10 première génération.

In 1978 also released the 40/10 and 40/30 series. The first is in stirrup, it is supplied with the HP seat to French standards and the international connection and supplied in the box, so there is no 40/20 !. The 40/30 represents the DIN version.

The first stage is piston but with a compensated mobile nozzle while the second stage is provided with an injector and oversized mustache to provide great breathing and expiratory comfort. it is equipped with an HP output and 3 MP outputs mounted on a turret.

Détendeur SÉRIE 40/10 seconde génération

I present here a 40/10 second generation released in 1981. What changes at the level of the first generation is the internal mechanism of the second stage which has been redesigned and improved.

It is also at the level of the first floor a clip which holds the bronze filter whereas before the bronze was inside the seat.

Détendeur SÉRIE 40/30

The 40/30 regulator is the DIN version of the 40 series. Very difficult to find, it is even the only copy that I have never seen and I went to look for it in the USA ... This is to tell you !

Détendeur 30 inject technisub

I present here the Technisub version of the 40 series, called 30 INJECT in Italy. It only exists with seat F with a diameter of 18.5mm.

Détendeur SÉRIE 50/10 première génération

In 1978 also released the 50/10 and 50/30 series. As the series 40 the first is in stirrup, it is supplied with the HP seat to French standards and the international connection and supplied in the box, so there is no 50/20. The 50/30 represents the DIN version.

The first stage is piston but with a compensated mobile nozzle while the second stage is provided with an injector and oversized mustache to provide great breathing and expiratory comfort. it is equipped with an HP output and 3 MP outputs mounted on a turret. The notable difference of the 50 compared to the 40 is the addition of a sensitivity device on the 2nd floor

Détendeur SÉRIE 50/10 seconde génération

I present here a 50/10 second generation released in 1981. What changes at the level of the first generation is the internal mechanism of the second stage which has been redesigned and improved.

It is also at the level of the first floor a clip which holds the bronze filter whereas before the bronze was inside the seat. This new model comes with its box.

Détendeur SÉRIE 50/30

The 50/30 regulator is the DIN version of the 50 series. Very difficult to find, it is even the only copy that I have never seen and I went to look for it in Alsace with my friend Éric, it is new and come with his box.

Détendeur 40L inject technisub

I present here the Technisub version of the 50 series, called 40L INJECT in Italy. It only exists with seat F with a diameter of 18.5mm.

What revolutionizes this model is its mustaches which are an integral part of a "protective cover" on the second floor.

Détendeur SÉRIE 50/10 troisième génération

To end this long series, here is what is perhaps an attempt on the part of spirotechnology to extend the marketing of the 50 series by releasing this version in 1984. The push button takes up the new logo of the spiro released in honor of the new XL plastic case. It uses the whiskers of the 40L INJECT model from technisub.

It is the only copy I know of and yet it has the serial number 1839.

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