Hi Couv, Balanced inflator valves like Scubapro and the standard K inflator valve are the best choice. 100 % agree.@emoreira I agree with your post with the exception of the quoted comment above. Yes, a leak can occur if the Schrader valve fails-but only if there is another seal malfunction or if the QD is not connected.
Self inflating of a bladder is caused by a malfunction in the inflator valve. It is worth noting that balanced valves, such as found in the Scubapro and Atomics inflators, are less prone to failure than the common inflator devices.
Inflator valves with a schrader valve inside, like Aqualung, Cressi, Mares and many others have 2 schrader valves in tandem. One in the hose, which is mantainded open while the hose is connected and a second one inside the valve which is actioned by the user to inflate the bladder. If this schrader valve brokes (usualy the small spring breaks owing to poor rinsing) this valve remains open or hardly closed and LP air keeps entering the bladder (self inflating). I mean the air leaks inside the bladder.
Inflator valves based in schrader valves, not only suffer from leaking schrader valves, but also I usually see plastic carriers (where the valve is threaded) broken owing to too much torque to screw in the valve. Again the bladder self inflates.
I hardly see any inflator hose with a broken schrader valve. This valve receives no water and works very litle.