Rebreather World - View Single Post - Oxygen Cleanliness

Ant Slegg · 29th June 2007, 18:56

Quote: (Originally Posted by teomannaskali)

Howmuch do DIN to DIN hoses cost?
Teoman

A DIN/DIN whip O2 clean is available from AP Valves for not a lot of money *35GBP??) but of course DIN is (currently) a diving fitting. Oxygen kits (used for first aid for DCI for example) have a different fitting that has its origins in the medical use of gases. Two pins have to engage with the cylinder valve. This was intended to stop the patient getting the wrong gas! You therefore have to get the right type of cylinder or valve.

I suppose in the end it depends how much O2 you use and how difficult it is to get. The big problem is that as you decant off the O2 the pressure drops and you can quickly end up with a cylinder with 100bar in that is of no use to you. That's why Haskel pumps were created. These pumps are effectively pressure boosters and allow more gas to be use. See Jetsam Products Page for an example (and an example price!)

29th June 2007, 18:56	#6 (permalink)
Ant Slegg Still Learning.... Current Rebreather/s: Ouroboros Other Rebreather/s: Ouroboros Join Date: Nov 2005 Location: Grevenmacher, Luxembourg Posts: 165	Re: Oxygen Cleanliness - Again Quote: (Originally Posted by teomannaskali) Howmuch do DIN to DIN hoses cost? Teoman A DIN/DIN whip O2 clean is available from AP Valves for not a lot of money *35GBP??) but of course DIN is (currently) a diving fitting. Oxygen kits (used for first aid for DCI for example) have a different fitting that has its origins in the medical use of gases. Two pins have to engage with the cylinder valve. This was intended to stop the patient getting the wrong gas! You therefore have to get the right type of cylinder or valve. I suppose in the end it depends how much O2 you use and how difficult it is to get. The big problem is that as you decant off the O2 the pressure drops and you can quickly end up with a cylinder with 100bar in that is of no use to you. That's why Haskel pumps were created. These pumps are effectively pressure boosters and allow more gas to be use. See Jetsam Products Page for an example (and an example price!) __________________ Ant' S Learning to dive since 1990...
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