Tue Nov 06, 2007 1:11 am
Additional Hose Colors:
Prototype Gagnan designed regulators used WWI gas mask hoses, which were canvas coated tan, or so I read. The two Australian made double hose regulators, the 'Juke Box' lung and the Lawson Lung had the same gas mask type hoses as these. I have original photographs of both. The canvas coated hoses also appeared on my Russian rebreathers and some Russian double hose regulators.
Black two piece hoses with chromed mouth pieces appeared on the British Submarine Products Sea Lion and Sea Lion II. The Super Sea Lion, Atlantis and Black Prince used a black rubber mouth piece and black hoses. They contracted for Cavalero in France to, and only the label changed.
Bright green hoses first appeared on the British made Heinke 'horn', the first regulator to circumvent the Cousteau-Gagnan patent by changing the exhaust method. Heinke was the competition for the Siebe Gorman licensed Mistral in the Commonwealth. Both the later Heinke MkIII, MkIV, MkVI or 'Merlin' had seamless black hoses and Siebe Gorman models had seamless black hoses as well. I have seen these and have several, so I know they are correct. Blue two piece hoses appeared on the early Nemrod regulators, but a dark grey and later black were also used. I have a new Nemrod Snark III so that is correct also. I also have a late Dacor in new condition and it has black seamless hoses.
I believe blue one piece hoses first appeared on the rather late model green label US Divers Aqua Lung. I have a new/undived green label regulator with serial number 9599, which makes it an early 1953 model. It has blue hoses. The green label models had a chromed mouth piece when first released, or so I read. It was the first Aqua Lung model to actually be made 100% in the USA and not of Canadian or French imported parts. The hoses have 'Made in USA' on them too.
The blue labeled Aqua Lung followed and it too had the blue one piece hoses. However, my blue label model is a late one and it has black two piece seamed hoses. That may have been the change over point or mine are replaced. The regulator appears 'like new' so they should be original. There is no way to be sure. The two piece had valves and the one piece did not, and that was a safety issue. I would guess that blue one piece was intended for the change over from green label to blue label, as they matched. However, yellow hoses appeared on yellow labeled Mistrals and blue labeled Aqua Masters, so there is no consistancy there.
There appears to be no firm pattern of one model 'only' having one hose type or color. It appears that existing stocks of hoses were used up, with overlaps appearing.
I am afraid that exhausts my knowledge on the matter.