What test procedure do other EBME's use for the testing of Entonox demand valves?
We use the BPR medical demand valves and they are described as maintenance free for 5 years at which point they require swapping out due to the hose degrading.
We do however do a basic leak on test them yearly, and then service exchange every 4 years.
I'm curious as to how often people check them and what test specs and tolerances are used.
