Quote:
| Originally Posted by Gareth J Ant
The problem with fitting a non-isolated manifold is that manifolds interface below the cylinder valve - so if you close the cylinder valve the manifold is still accessing gas from that cylinder, even though the cylinder valve is closed.
If the manifold fails, you dump all the gas from both cylinders.
With an isolator you can shut off the damaged manifold from at least one of the cylinders, thus preserving the gas in the other cylinder.
Adding the isolator adds a new failure point on the high pressure side, fitting the manifold reduces the impact of this potential failure.
Isolated manifolds ensure that you can isolate each half of the configuration, worst gas a manifold failure will only dump gas from one of the cylinders not both if a isolator is fitted. In the event of a first stage failure the manifold allows you to access gas from the effected cylinder via the isolator.
Gareth |
Sure I agree with all this - which is why I said that if it is a problem with the manifold then it is a different kettle of fish. However if there is a problem with the reg such as a freeflow then you can just shut the post down and bob's yer uncle - and a reg problem is surely more common that a manifold one.
plus if you have a damged manifold - such as by whacking it against something chances are you damage both side of the manifold and yer isolotor won't help you then.
Cheers, a