Source for Breathing hose?

[Simon A]

I'm looking for some rebreather hoses the same ID as the Draeger hoses. Does anyone know of a reasonable supplier in the UK? or am I better off buying Draeger hoses from watersafety.net (2 hoses come to 100 Euro's inc delivery).
Or buy prism hoses (900mm x 36mm ID) fron Steam machines at $42 each.

Cheers
Simon A

[NotDeadYet]

Watersafety's delivery is a pain, 25Euro flat charge to the UK regardless of what it is, if you really plead with them they will send stuff by regular post. But you really have to plead your case.

[iain/hsm]

Originally Posted by Simon A

I'm looking for some rebreather hoses the same ID as the Draeger hoses. Does anyone know of a reasonable supplier in the UK? or am I better off buying Draeger hoses from watersafety.net (2 hoses come to 100 Euro's inc delivery).
Or buy prism hoses (900mm x 36mm ID) fron Steam machines at $42 each.

Cheers
Simon A

Simon. An interesting question that I hope I can help with however please just take this as information and not a blatent plug.
For the couple of hoses you are after, better with your equipment supplier as all rebreather hose with few exceptions are specific to each manufacturer from the point of diameter, length, cuff diam/length and material. Most sports rebreathers use neoprene rubber, moulded from a 2 part tooling with cuff ends, some of which have "location" inserts. As the tooling is "paid for" or part paid for by the diving company you have to go to them, and not the moulder for these products.

As a supplier to the military I am also aware of EPDM material more suited for diving in "oil slicks" and having a tougher hose designed specifically for abrasion, deflection, elongation, as well as for work of breathing, flow etc. But you are faced with a 500 unit minimum order plus the tooling if you want something specific but if you allow your tooling to be made generic, i.e. available to others there is no charge (at least for the tooling) and the batch quantity is reduced to 250.

From an original enquiry we would normally design the tool and provide a single prototype sample tube for your evaluation and testing (at no charge) We would however expect the minimum order of 250 or 500 to be met.

Maybe of future interest are a couple of generic tools already in production for export Navy use that are available. Both are to mil spec, manufactured in EPDM but are for the counterlung attachments only. These are supplied in minimum batches of 10 with batch code, cure date and MITP certification. Priced at a modest £10-00 per hose, with further discount for quantity. Enclosed jpeg of the three main hose types for the UBA. Unfortunatly although the two small counter lung hoses are generic the longer breathing tubes are not, and at £19 each they are subject to a 250 minimum order. I know it just sucks! but as we have mininimum stock of 500 of each of these so you dont go breathless. We can always just do an overnight delivery! Lol

[Simon A]

Iain,
Thaks for the info, I'm building a homebuild so a 250/500 order is a little out of my range, however counterlung hoses are something I require. Do you have any further info on the length and I/D of them available, maybe even a drawing? Also do you have any generic parts to connect them to the lungs (preferably T-pieces, but either works)that are available in similar quantities(10's)?

Regards
Simon A

[awalker]

Hmm

I would also be very interested in hoses for a home build.

I am sure we can get together enough interest for a quatity of ten.

Looks like the mouth piece is a drager type (does that sound right!)

[Duncan Price]

Originally Posted by iain/hsm

Maybe of future interest are a couple of generic tools already in production for export Navy use that are available. Both are to mil spec, manufactured in EPDM but are for the counterlung attachments only. These are supplied in minimum batches of 10 with batch code, cure date and MITP certification. Priced at a modest £10-00 per hose, with further discount for quantity. Enclosed jpeg of the three main hose types for the UBA. Unfortunatly although the two small counter lung hoses are generic the longer breathing tubes are not, and at £19 each they are subject to a 250 minimum order. I know it just sucks! but as we have mininimum stock of 500 of each of these so you dont go breathless. We can always just do an overnight delivery! Lol

Or better still, how about you leave a couple of hoses outside your back door and I nip around to see if they'll fit Draeger parts?

Duncan

[iain/hsm]

Originally Posted by Duncan Price

Or better still, how about you leave a couple of hoses outside your back door and I nip around to see if they'll fit Draeger parts?
Duncan

Tell us when your back in town Duncan (give us chance to hide everything) you keep promising that beer!

[Simon A]

Duncan,
Whilst you're there please can you make a note of the hose lengths as well?
PS, floor pads are on back order (before Christmas), they rang me up and I specified white.
Cheers
Simon

[Duncan Price]

Originally Posted by iain/hsm

Tell us when your back in town Duncan (give us chance to hide everything) you keep promising that beer!

Iain - I'm around all week and available for beer. Off skiing next week - bloody dangerous activity: I've dislocated right shoulder a couple of times on the snow and my GP advised me that should it happen again I ought to have skiing lessons.

[iain/hsm]

Originally Posted by Simon A

Iain,
Thaks for the info, I'm building a homebuild so a 250/500 order is a little out of my range, however counterlung hoses are something I require. Do you have any further info on the length and I/D of them available, maybe even a drawing? Also do you have any generic parts to connect them to the lungs (preferably T-pieces, but either works)that are available in similar quantities(10's)?

Regards
Simon A

Good point I forgot the sizes! However the post was simply for information purposes only I felt that we all kind of need to know what to ask for first, when specifying. On the other hand if you are asking for a specific product part, then I have to say go to the diving supplier, or shop.

Selling OEM parts in the UK for rebreathers is not possible as this conflicts with the CE, EN250 certification of the original product. Further selling a product for diving requires EN14143 approval.
However if say you want just a rubber hose and you have all the specific information about the hose then that's all that is supplied, "a rubber hose".
The trick is to have all the specific technical information first off in order to place an correct technical enquiry.

As "example" In April 2000 we laid down two tools, one used for a mil spec project, the other July 2000 for a commercail project. Both hoses were manufactured in ozone and oxygen resistant EPDM polymer material in two versions. Both 305 mm total length, with a coiled tube of 241 mm, one with a reduced bore cuff end. The main cuff diameter is 1.750 diameter on a cuff length of 1.40 long. The reduced bore option at one end is 1.250 diameter on a 1.250 long cuff length.

For a longer tube specification this tool dates back to the Kraken-C2, and Mark 19 CDBA projects: Hose again manufactured in ozone and oxygen resistant EPDM polymer material. 550 mm total length with a reduced cuff diameter of 31.75 mm internal diameter and a 43.43 mm internal diameter at the mouthpiece end. This is suitable for a finished machined mouthpiece diameter of 44.5 mm OD with a raised cuff end of 47.0 mm. EPDM: coiled tube 480mm. Each coil is 50 mm diameter OD.

For mil spec we normally modify the hose with an extra heavy wall of 0.09 inch 2.286 mm +0.015 -0.000 rather than the more common 0.07 inch 1.78 mm wall thickness. This extra heavy wall will support not only the rig weight but will not crush, scuff or split like the thin scuba rebreather type hoses.

Correctly specify just a hose with no mention of its purpose or intended use with another product and free the supplier of staturory obligations.