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Paul H... I think my latest message to you was private so we may have confused a few list subscribers, but that's easily done anyway :) Briefly, for those who care, my message concerned the apparent lack of availability of a decent 300 bar DIN isolator manifold in the UK, despite the fact that the acknowledged dogs bollocks in the US (Scubapro/Dive Rite/Sea Tec) is actually made on our side of the pond (Switzerland? - thanks to Philip Underhill for that info, I'll be checking tomorrow). I'm not aware of a proper UK source for the OMS (valve threads are the problem here) but if it does use face seals it's crap anyway. The orientation of the DIN valve fittings is at 90 degrees to your normal direction of travel, so they're not subject to the turning effect on impact and also not as exposed as the isolator valve. Remember also that loss of the valve-manifold joint means goodbye to half your remaining gas. A fucked valve-first stage joint means shutting down the reg, but the gas is preserved. This is a vital distinction and the whole point of diving a manifold in the first place, otherwise you may as well have independants and save yourself the expense (your family will need it for the funeral). Independants are wrong, but so is a duff manifold. Discussing degrees of wrong is pointless. Scubapro & Dive Rite don't have the 300 bar; the MDE is a joke, a five (yes five) piece manifold? Please. Apeks is just close, but no cigar. OMS - face seals, no thanks. Somebody tell me those damm yankees don't do it better than us :) See you Paul C (the Brits are coming...well soon anyway...if it's OK with y'all) In your message dated Friday 18, April 1997 you wrote : > Further to Paul Chapmans' earlier message re: manifolds and the limited = > options over here in the UK.> What are the relative merits of the OMS manifold? > It appears to have facing o-rings but the blurb says that they are = > captive like a DIN fitting and therefore a 'superior method in = > preventing O-ring extrusion' > It certainly seems a bit more solid than the Apeks ( even the 300 bar = > version), which has single barrel o-rings and has a lot less joins than = > the MDE. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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