tell me how

[Rev.Dave]

how do you tell if your mag rt is an old rental and will it matter in the long run??

[BeaverEater]

I think retal valves have "rental" engraved in them but i could be wrong. It shouldnt affect the life span of your mag, they are built like tanks.

[mercury]

At the worst you may have to replace some o-rings or maybe the reg seat.

[Chronobreak]

it wont effect the overall valve life=infinity

you may need a parts kit at the max to rebuild the valve

also you should know rental valves WONT take lvlX..not that its a HUGE deal.

i had a field rental mag/valve it was fine and as good as any other mag