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Without burst disks, the tank neck oring becomes the major failure point that might blow if the pressure is too great. Think of burst disks as redundant since the tank orings will probably go before your tank does. An isolator would definitely be ideal. What would you do if your tank neck oring blew? ss ----- Original Message ----- From: <ScottBonis@ao*.co*> To: <techdiver@aquanaut.com> Sent: Saturday, February 19, 2000 8:55 PM Subject: Manifold > Hi guys, > > I'm asking for some information. I received a dual tank manifold that's a little different from any I have previously seen. So before I go ahead and start using it in the caves here in Akumal, I appreciate any experience any of you have had with it or similar products. > > The brand name and "S" symbol are from ScubaPro. Both tank valves and the center connecting piece say they were made in Italy. The valves are of a 200 bar DIN type with the number "232 BAR" cast into their sides. The right hand valve cover is black and the left hand valve cover is light gray. There is no center isolation valve. > > An interesting feature of the valves is that they have no burst disks. The valve castings look as though they were never drilled and threaded for the burst disks. One concern I have is the strength of this portion of the casting since I have never seen this configuration previously. Any comments? > > I believe that one of the (if not "the") major reasons for an isolation valve is the possibility of popping a burst disk, so I now need to evaluate whether to consider the possibilitgy of using the manifold as is without an isolation valve or to add one. I'd really like input on whether the possibility of a catastrophic problem with a tank O-ring, with both of the O-rings on one side of the center connecting tube or with some other unusual manifold problem are likely enough to warrant the addition of an isolation valve with the attendant additional possible failure points. With burst disks in place, the answer for me is clearly yes, but without burst disks I'd like to get some advice from this list. > > In advance, I'd like to thank you for any information and opinions that you would care to send my way. > > Take care and safe diving, Scott > -- > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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