Sat Aug 27, 2011 11:32 am
The difference in pressure between the hole and the diaphragm would cause the demand valve to release air, if the hole was at a higher position underwater. I would recommend that you replace the entire hose set, as this is a life support item. Should You decide to keep the hose in service and repair it, switch hoses so the breathing hose is not one which has a repair.
Not all hoses come from the factory like they should either. I bought a new condition Siebe Gorman Mistral, and found the wall thickness of one of the hoses was very thin indeed. The hoses were clearly original, but faulty. I replaced them with facsimile hoses. Your life and the life of others is far too precious to risk over the cost of a new hose. Just my thoughts, Steve