Quote: (Originally Posted by
narked at 90)
personaly i would also add a second lock to the button as they some times get depressed when in enclosed cases and in counter lungs, this has been a problem on a number of dolphin convertions
i drilleed mine through the button and p-port case and inserted a pin, that stopped the button being pressed in unless the pin had been removed first.
You make a good point with the lock button (Green sent). We did experiment with a second button, but found it increased the chance of failure. We found the better solution was increasing the O ring pressure. This means that when greased with Crystalube, it comes in an out with about 1kg pull, but does mean you need a lot of pressure to get it out if it becomes dry. The pressure means that if the button is pushed, the connector does not fall out.
There are still improvements we are doing in the hard tooling. In case the weld to the breathing bag fails, we are increasing the skirt to 20mm wide so even when just screwed into a breathing bag, the port cannot be pulled out of the bag. It also reduces the stress a lot on the weld to the bag.
Alex