Quote:
| Originally Posted by nickb OK, if the valve is closed then you'll be relying on the very fine brass thread to hold the slug in place. |
On an Apex we used to rely on fine plastic threads holding them in place....it worked. The spindle is free to move in and out anyway when the valve is shut on most valves. Take a handle off a valve and see for yourself. Every one I have seen except the MDE has some movement.
Quote:
| Originally Posted by nickb If you know this already Neil, why are you asking if it's OK? Frankly I think it's fucking stupid in the extreme coming on here suggesting that something like this is OK, but if you know better, suit yourself. You'll be saving a couple of quid's worth of gas after all  |
I put a spanner on it and it didn't feel right so I came and asked the question - that is how we learn. Now I found out that MDE are not like any other valve I have dismantled, and in 25 years there have been many!
Quote:
| Originally Posted by nickb BTW, why is the manifold isolation valve any different? |
Because that valve is not stopping gas coming out of a cylinder it is stopping gas travelling down a tube from one cylinder to the other. Pressure is on both sides while the cylinders contain gas.
ps. it's not the saving of the gas that is the problem. As I said earlier I will leave it until after the Friday dive. It was just from previous experience a strip and clean of the valve could be done in 10 mins with the gas still in the cylinder. Now it sems MDE valves are different. We live and learn.....some without the swearing
