I need to fact check against you guys.
I bought recently (october) new Miflex inflator hoses for my regulators with standard QD coupling.
Changed them, tested them under pressure, took them to a few dives. So far so good.
After some dives i partly disassembled my second stages to clean them more thoroughly and gave them a negative pressure test after reassembly, just to be sure everything sits right.
I realised could draw air through the 2nd stage fairly easy and quite a big amount, even though all connections should be "plugged".
Searching for the leak in the system i found pretty quickly (you may have guessed it by the title) that the schrader-valve on the inflator hose is leaking and the air is coming from the inflator hose through the 1st to the 2nd stage.
As this hose was pretty new i exchanged it at the retailer with a new hose, only to have the same problem with that one, too.
I contacted miflex directly and they answered me in short: This should be expected, the hoses aren't made for negative pressure.
Am i wrong with my opinion that the schrader-valve should fully close on the QD (by spring pressure)?
I bought recently (october) new Miflex inflator hoses for my regulators with standard QD coupling.
Changed them, tested them under pressure, took them to a few dives. So far so good.
After some dives i partly disassembled my second stages to clean them more thoroughly and gave them a negative pressure test after reassembly, just to be sure everything sits right.
I realised could draw air through the 2nd stage fairly easy and quite a big amount, even though all connections should be "plugged".
Searching for the leak in the system i found pretty quickly (you may have guessed it by the title) that the schrader-valve on the inflator hose is leaking and the air is coming from the inflator hose through the 1st to the 2nd stage.
As this hose was pretty new i exchanged it at the retailer with a new hose, only to have the same problem with that one, too.
I contacted miflex directly and they answered me in short: This should be expected, the hoses aren't made for negative pressure.
Am i wrong with my opinion that the schrader-valve should fully close on the QD (by spring pressure)?